Page 1 Manitowoc Indigo™ Series Air/Water/Remote Condenser Ice Machines Technician’s Handbook This manual is updated as new information and models are released. Visit our website for the latest manual. www.manitowocice.com America’s #1 Selling Ice Machine Part Number STH025 8/12...
Page 3: Safety Notices
Safety Notices As you work on Manitowoc equipment, be sure to pay close attention to the safety notices in this handbook. Disregarding the notices may lead to serious injury and/or damage to the equipment. Throughout this handbook, you will see the following...
Page 4 Procedural Notices As you work on Manitowoc equipment, be sure to read the procedural notices in this handbook. These notices supply helpful information which may assist you as you work. Throughout this handbook, you will see the following types of procedural notices:...
Page 5 ! Caution Proper installation, care and maintenance are essential for maximum performance and trouble- free operation of your Manitowoc equipment. If you encounter problems not covered by this manual, do not proceed, contact Manitowoc Foodservice. We will be happy to provide assistance.
Page 6 Warning Do not use electrical appliances or accessories other than those supplied by Manitowoc for your ice machine model. Warning Two or more people or a lifting device are required to lift this appliance. Warning This equipment contains high voltage electricity and refrigerant charge.
Page 7 Warning Do not operate equipment that has been misused, abused, neglected, damaged, or altered/modified from that of original manufactured specifications. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they...
Page 8 Warning It is the responsibility of the equipment owner to perform a Personal Protective Equipment Hazard Assessment to ensure adequate protection during maintenance procedures. Warning Two or more people are required to move this equipment to prevent tipping.
Page 9 Warning When using electric appliances, basic precautions must always be followed, including the following: a. Read all the instructions before using the appliance. b. To reduce the risk of injury, close supervision is necessary when an appliance is used near children. c.
Page 10 We reserve the right to make product improvements at any time. Specifications and design are subject to change without notice.
Page 11: Table Of Contents
Table of Contents General Information How to Read a Model Number ..17 Head Sections ....17 Ice Cube Sizes .
Page 12 Maintenance Cleaning and Sanitizing ... . . 39 General ......39 Cleaning/Sanitizing Procedure .
Page 13 Password Entry ....72 Clean Minder ....73 IAuCS Runtime .
Page 14 Troubleshooting Safety Limits ..... . 113 Safe Operation Mode ... . . 113 Analyzing Why a Safety Limit Stopped the Ice Machine .
Page 15 Component Check Procedures Electrical Components ....161 Control Board, Display board and Touch Pad ......161 Control Board Relay Test .
Page 16 Charts Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts ..221 I0300 Series ....222 I0320 Series .
Page 17: General Information
General Information How to Read a Model Number HEAD SECTIONS Part Number STH025 8/12...
Page 18: Ice Cube Sizes
7/8" x 7/8" x 7/8" 3/8" x 1-1/8" x 7/8" 2.86 x 2.86 x 2.22 cm 2.22 x 2.22 x2.22 cm 0.95 x 2.86 x 2.22 cm Warning All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) incorporate an ice deflector....
Page 19: Model Numbers
Model Numbers AIR-WATER-REMOTE CONDENSER MODELS Self-Contained Self-Contained Remote Air-Cooled Water-Cooled ID0302A ID0303W ---- IY0304A IY0305W ID0306A ID0306W IY0306A IY0306W ID0322A ID0323W ---- IY0324A IY0325W IR0520A IR0421W ---- ID0522A ID0423W ---- IY0524A IY0425W ID0452A ID0453W ---- IY0455W IY0454A ID0456W ID0456A IY0456W IY0456A IR0500A IR0501W...
Page 20 Self-Contained Self-Contained Remote Air-Cooled Water-Cooled ID1402A ID1403W ID1492N IY1404A IY1405W IY1494N ID1406A ID1406W ID1496N IY1406A IY1406W IY1496N IR1800A IR1801W IR1890N ID1802A ID1803W ID1892N IY1804A IY1805W IY1894N NOTE: Marine and Prison models have a M or P suffix - Example ID0853WM 3 suffix at the end of the model number indicates a 3 phase unit - Example IY1004A3 Part Number STH025 8/12...
Page 21: Ice Machine Warranty Information
If the OWNER WARRANTY REGISTRATION CARD is not returned, Manitowoc will use the born on date recorded in the control board or the date of sale to the Manitowoc Distributor as the first day of warranty coverage for your new ice machine.
Page 22: Commercial Warranty Coverage
COMMERCIAL WARRANTY COVERAGE Manitowoc Ice, (hereinafter referred to as the "COMPANY") warrants for a period of thirty-six months from the installation date (except as limited below) that new ice machines manufactured by the COMPANY shall be free of defects in material or workmanship...
Page 23 COMPANY within five (5) days from the installation date. To obtain warranty service or information regarding your Product, please contact us at: MANITOWOC ICE 2110 So. 26th St. P.O. Box 1720, Manitowoc, WI 54221-1720 Telephone: 920-682-0161 Fax: 920-683-7585 www.manitowocice.com Part Number STH025 8/12...
Page 24: Residential Ice Machine Limited Warranty
Subject to the exclusions and limitations below, Manitowoc Ice (“Manitowoc”) warrants to the original consumer that any new ice machine manufactured by Manitowoc (the “Product”) shall be free of defects in material or workmanship for the warranty period outlined below under normal use and maintenance,...
Page 25 WHAT ARE MANITOWOC ICE’S OBLIGATIONS UNDER THIS LIMITED WARRANTY? If a defect arises and Manitowoc receives a valid warranty claim prior to the expiration of the warranty period, Manitowoc shall, at its option: (1) repair the Product at Manitowoc’s cost, including standard...
Page 26 (5) defects or damage to any Product that has not been installed and/or maintained in accordance with the instruction manual or technical instructions provided by Manitowoc. To the extent that warranty exclusions are not permitted under some state laws, these exclusions may not apply to you.
Page 27 REGISTRATION CARD To secure prompt and continuing warranty service, this warranty registration card must be completed and sent to Manitowoc within thirty (30) days from the sale date. Complete the registration card and send it to Manitowoc. Part Number STH025 8/12...
Page 28 This Page Intentionally Left Blank Part Number STH025 8/12...
Page 29: Installation
Installation Warning PERSONAL INJURY POTENTIAL Remove all ice machine panels before lifting. ! Caution The ice machine head section must be protected if it will be subjected to temperatures below 32°F (0°C). Failure caused by exposure to freezing temperatures is not covered by the warranty. See “Removal from Service/Winterization”...
Page 30: Location Of Ice Machine
Location of Ice Machine The location selected for the ice machine must meet the following criteria. If any of these criteria are not met, select another location. • The location must be free of airborne and other contaminants. • Self contained air and water cooled - The air temperature must be at least 35°F (1.6°C), but must not exceed 110°F (43.4°C).
Page 31: Clearance Requirements
Clearance Requirements AIR, WATER, REMOTE CONDENSER MODELS Self-Contained Self-Contained I0300 Air-Cooled Water-Cooled Top/Sides 16" (40.6 cm) 8" (20.3 cm) Back 5" (12.7 cm) 5" (12.7 cm) I0450 Self-Contained Water-Cooled and I0500 - I0600 Air-Cooled Remote* I0850 - I1000 Top/Sides 8" (20.3 cm) 8"...
Page 32: Ice Machine Heat Of Rejection
Ice Machine Heat of Rejection Heat of Rejection Series Ice Machine Peak Conditioning* I0300 4600 5450 I0320 3800 6000 I0450 5400 6300 I0500 6100 6900 I0520 5300 6100 I0600 9000 13900 I0850 13000 16000 I1000 16250 18600 I1200 20700 24500 I1400 23500 27000...
Page 33: Installation On A Bin
Installation on a Bin An ice deflector is required for all bin installations and is included with all Manitowoc bins. Order the appropriate deflector kit (30” or 48”) for any bin without a deflector.. Warning PERSONAL INJURY POTENTIAL Do not operate any ice machine with the deflector removed.
Page 34: Lineset Applications
! Caution The 60-month compressor warranty (including the 36-month labor replacement warranty) will not apply if the Manitowoc Ice Machine, Condenser or QuietQube® Condensing Unit were not installed according to specifications. This warranty also will not apply if the refrigeration system is modified with a condenser, heat reclaim device, or other parts or assemblies not manufactured by Manitowoc Ice.
Page 35: Remote Condenser
Remote Condenser Remote Single Ice Machine Circuit Line Set* Condenser RT-20-R404A I0590N JC0495 RT-35-R404A RT-50-R404A RT-20-R404A I0690N JC0895 RT-35-R404A I0890N RT-50-R404A RT-20-R404A I1090N JC0995 RT-35-R404A RT-50-R404A RL-20-R404A I1490N JC1395 RL-35-R404A I1890N RL-50-R404A *Line Set Discharge Line Liquid Line 1/2" (1.27 cm) 5/16"...
Page 36: Additional Refrigerant Charge For  51' To 100' Line Sets
Additional Refrigerant Charge For  51’ to 100’ Line Sets Additional Amount of Refrigerant To Be Condenser Machine Added To Nameplate Charge I0590N JC0495 1.5 lbs - 680g I0690N JC0895 1.5 lbs - 680g I0890N JC0895 2 lbs - 907g I1090N JC0995 2 lbs - 907g...
Page 37: Calculating Allowable Lineset Distance
CALCULATING ALLOWABLE LINESET DISTANCE Line Set Length The maximum length is 100' (30.5 m). Line Set Rise/Drop The maximum rise is 35' (10.7 m). The maximum drop is 15' (4.5 m). 35 FT. (10.7 M) MAXIMUM DISTANCE SV1751 35 ft. (10.7 m) Rise: The maximum distance the Condenser or Condensing Unit can be above the ice machine.
Page 38 Calculated Line Set Distance The maximum calculated distance is 150' (45.7 m). Line set rises, drops, horizontal runs (or combinations of these) in excess of the stated maximums will exceed compressor start-up and design limits. This will cause poor oil return to the compressor. Make the following calculations to make sure the line set layout is within specifications.
Page 39: Cleaning And Sanitizing
An extremely dirty ice machine must be taken apart for cleaning and sanitizing. Manitowoc Ice Machine Cleaner and Sanitizer are the only products approved for use in Manitowoc ice machines. Part Number STH025 8/12...
Page 40 (Manitowoc Cleaner part number 94-0546-3 and Manitowoc Sanitizer part number 94-0565-3). It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. Read and understand all labels printed on bottles before use.
Page 41: Cleaning/Sanitizing Procedure
CLEANING/SANITIZING PROCEDURE This procedure must be performed a minimum of once every six months. • The ice machine and bin must be disassembled cleaned and sanitized. • All ice produced during the cleaning and sanitizing procedures must be discarded. • Removes mineral deposits from areas or surfaces that are in direct contact with water.
Page 42: Cleaning / Sanitizing Procedure
(Manitowoc Cleaner part number 94-0546-3 and Manitowoc Sanitizer part number 94-0565-3). It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling. Read and understand all labels printed on bottles before use.
Page 43 Step 1 Open the front door to access the evaporator compartment. Ice must not be on the evaporator during the clean/sanitize cycle. Follow one of the methods below: • Press the power switch at the end of a harvest cycle after ice falls from the evaporator(s). •...
Page 44 Step 4 Wait until the clean cycle is complete (approximately 24 minutes). Then disconnect power to the ice machine (and dispenser when used). Warning Disconnect the electric power to the ice machine at the electric service switch box. Step 5 Remove parts for cleaning. Please refer to the proper parts removal for your ice machine.
Page 45: Sanitizing Procedure
Step 7 Use 1/2 of the cleaner/water mixture to clean all components. The cleaner solution will foam when it contacts lime scale and mineral deposits; once the foaming stops use a soft-bristle nylon brush, sponge or cloth (NOT a wire brush) to carefully clean the parts. Soak parts for 5 minutes (15 - 20 minutes for heavily scaled parts).
Page 46 Step 11 Use 1/2 of the sanitizer/water solution to sanitize all food zone surfaces of the ice machine and bin (or dispenser). Use a spray bottle to liberally apply the solution. When sanitizing, pay particular attention to the following areas: •...
Page 47 Step 15 Wait until the water trough refills and the display indicates add solution (approximately 1 minute). Add the proper amount of Manitowoc Ice Machine Sanitizer to the water trough by pouring between the water curtain and evaporator. Model Amount of Sanitizer...
Page 48: Parts Removal For Cleaning/Sanitizing
PARTS REMOVAL FOR CLEANING/SANITIZING. O f f O n / O f f M o d e A. Remove the water curtain • Gently flex the curtain in the center and remove it from the right side. • Slide the left pin out. B.
Page 49 D. Remove the ice thickness probe • Compress the hinge pin on the top of the ice thickness probe. • Pivot the ice thickness probe to disengage one pin then the other. The ice thickness probe can be cleaned at this point without complete removal. If complete removal is desired, disconnect the ice thickness control wiring from the control board.
Page 50 Ice Thickness Probe & Water Level Probe Clean the probes using the following procedure. 1. Mix a solution of Manitowoc ice machine cleaner and water (2 ounces of cleaner to 16 ounces of water) in a container. 2. Soak probes in container of cleaner/water solution...
Page 51 Water Inlet Valve The water inlet valve normally does not require removal for cleaning. Refer to “Water System Checklist” page 136, if you are troubleshooting water related problems. 1. When the ice machine is off, the water inlet valve must completely stop water flow into the machine. Watch for water flow.
Page 52 Water Dump Valve The water dump valve normally does not require removal for cleaning. To determine if removal is necessary: 1. Locate the water dump valve. 2. Press the power button and stop ice making. 3. While the ice machine is in the freeze mode, check the water trough to determine if the dump valve is leaking.
Page 53 During cleaning, do not stretch or damage the NOTE: spring. 1. Remove the tubing from the dump valve by twisting the clamps off. 2. Remove the valve body, twist off. COIL SPRING PLUNGER NYLON GASKET DIAPHRAM MOUNTING BRACKET VALVE BODY Dump Valve Disassembly Part Number STH025 8/12...
Page 54: Preventative Maintenance Cleaning Procedure
Preventative Maintenance Cleaning Procedure This procedure cleans all components in the water flow path, and is used to clean the ice machine between the bi-yearly cleaning/sanitizing procedure. Ice machine cleaner is used to remove lime scale and mineral deposits. Ice machine sanitizer disinfects and removes algae and slime.
Page 55 3. Press the Clean button. Water will flow through the water dump valve and down the drain. Wait until the water trough refills and the display indicates “Add Chemical” (approximately 1 minute), then add the proper amount of ice machine cleaner. Model Amount of Cleaner I0300/I0320/I0520...
Page 56: Removal From Service/Winterization
Removal from Service/Winterization General Special precautions must be taken if the ice machine is to be removed from service for an extended period of time or exposed to ambient temperatures of 32°F (0°C) or below. ! Caution If water is allowed to remain in the ice machine in freezing temperatures, severe damage to some components could result.
Page 57: Water-Cooled Ice Machines
WATER-COOLED ICE MACHINES 1. Perform steps 1-6 under “Self-Contained Air- Cooled Ice Machines.” 2. Disconnect the incoming water and drain line from the water-cooled condenser. 3. Energize the ice machine in the freeze cycle. The increasing refrigerant pressure will open the water regulating valve.
Page 58 This Page Intentionally Left Blank Part Number STH025 8/12...
Page 59: Operation
Power Button Cleaning Button Manitowoc LCD Display Navigation Arrows Menu Checkmark Button Operation Control Panel Features The control panel offers a series of pressure sensitive buttons and a four-line interactive display panel. BUTTONS Powers the ice machine when in the Power Button: On/Off Mode.
Page 60: Display Panel
Accesses main menu structure. Menu Button: Moves the display from the Home Screen, where ice machine status, alerts and messages are viewed, to the Main Menu, where machine information and its event log can be accessed, machine and Energy Saver settings can be adjusted, and service issues can be addressed.
Page 61: Menu Navigation Overview
Menu Navigation Overview Menu Button ON/OFF Button Cleaning Button Timer Initiated Home Screen When When AuCS Clean Clean Alert Message Function Function Present Present Alerts Messages Main Menu Machine Energy Set-up Defaults Service EXIT Info Saver Password Entry Defaults Return to (Optional) Exit Home Screen...
Page 62: Display Panel Navigation
Display Panel Navigation [ L a n g u a g e > ] ▼ T i m e & D a t e > T i m e C o n f i g > U n i t s >...
Page 63 A cursor (flashing rectangle) is used within Cursor: lines where actual settings can be adjusted. In these screens, use the Up and Down arrows to make changes to the value underlined. Move the cursor from digit to digit using the Right and Left arrows. Use the Checkmark to move the cursor down one line.
Page 64: Alerts And Messages
Alerts and Messages When messages and alerts exist, they will be highlighted and can be selected with the Left arrow. Alerts displayed will have priority over messages. O f f O n / O f f M o d e [ <...
Page 65: Main Menu
Main Menu From the Home screen, press the Menu button to enter the Main menu, where you can choose to see machine information, make setup changes, set the Energy Saver mode, or enter the Service Menu. Machine Info Set-Up Energy Saver Factory Defaults Service Exit...
Page 66: Machine Info Menu
Machine Info Menu From the Main menu, ensure that Machine Info is highlighted and press the Checkmark to view a list including capacity, model number, IMH (Ice Machine Head) serial number, condenser serial number, warranty, installation date, date of manufacture and software version.
Page 67: Set-Up Menu
Set-Up Menu From the Main menu, use the Down arrow to navigate to Set-Up and press the Checkmark. Select and customize machine settings on this menu. Press the Left arrow to return to previous screens. Set-Up Language Time & Date Time Configuration Units Ice Clarity...
Page 68: Language
LANGUAGE 1. From the Set-Up menu, use the Down arrow to highlight Language. 2. Press the Checkmark. You can choose to view the display in a language other than English, by highlighting your choice and pressing the Checkmark. Selecting one language will deselect the others.
Page 69 4. Press the Checkmark. The date will appear on the first line of the display (Mo/Day/Yr) and the time will appear on the second line (24 Hour). The month will have a blinking cursor. 5. Using the Up or Down arrow, adjust the month, if necessary.
Page 70: Time Configuration
TIME CONFIGURATION 1. From the Set-Up menu, use the Down arrow to highlight Time Config. 2. Press the Checkmark. On this screen, you can choose whether the date will be displayed as  Mo/Day/Yr or Day/Mo/Yr by highlighting your choice and pressing the Checkmark. Selecting one will deselect the other.
Page 71: Ice Clarity
ICE CLARITY In areas with poor potable water quality, the ice machine may produce cloudier ice. Setting Ice Clarity to ON will add additional water during the freeze cycle to dilute the water that contains a high content of dissolved solids in the water trough. This feature decreases production and increases water usage.
Page 72: Password Entry
Password Entry A password is not required, although a password can be turned on to prevent unauthorized control setting modification. You can use the Factory Default Password of "1234" or enter a four digit custom pin number of your choosing. To turn on the password feature use the following procedure.
Page 73: Clean Minder
To enter a four digit password of your choosing use the following procedure. 1. Press the Menu button. 2. From the Main menu, use the Down arrow to highlight setup and press the Right arrow. 3. Use the Down arrow to select Edit Password and press the Right arrow.
Page 74: Iaucs Runtime
IAUCS RUNTIME Automatic Cleaning System is an optional accessory and will perform a cleaning cycle at a set time interval. 1. From the Set-Up menu, use the Down arrow to highlight AuCS RunTime. 2. Press the Checkmark. On this screen, you can choose to turn the feature ON or OFF by highlighting your choice and pressing the Checkmark.
Page 75: Water Filter
WATER FILTER The ice machine has a feature that displays a replace water filter reminder at a set time interval. 1. From the Set-Up menu, use the Down arrow to highlight Water Filter. 2. Press the Checkmark. You can record the filter type on this screen by highlighting Filter Type and pressing the Checkmark.
Page 76: Luminice™ Reminder
LUMINICE™ REMINDER The LuminIce™ growth inhibitor recirculates the air in the ice machine foodzone over a UV bulb. This process will inhibit the growth of common micro- organisms on all exposed foodzone surfaces. The Bulb Minder is a feature that displays a reminder to change its bulb every 12 months.
Page 77: Ice Bin Level Sensor
ICE BIN LEVEL SENSOR Ice bin sensor is an optional accessory that allows the ice level in the bin to be set to one of three different levels. The bin level can be set seasonally to match usage, which results in lower energy costs and fresher ice.
Page 78: Energy Saver Menu
Energy Saver Menu From the Main menu, use the Down arrow to navigate to Energy Saver and press the Checkmark. Set up an energy saving ice program, enable the Water Miser and view usage statistics from this menu. Press the Left arrow to return to previous screens.
Page 79: Ice Program
ICE PROGRAM To save energy and water, the ice machine can be programmed to only power up during time periods that the ice will be used or when the bin level is being depleted by heavy use. 1. In the Energy Saver menu, ensure that Ice Program is highlighted.
Page 80: Water Miser
WATER MISER Water Miser is a feature that depending on water quality can reduce water usage by eliminating flush cycles. 1. From the Energy Saver menu, use the Down arrow to highlight Water Miser. 2. Press the Checkmark. On this screen, you can choose to turn the Water Miser ON or OFF by highlighting your choice and pressing the Checkmark.
Page 81: Factory Defaults
FACTORY DEFAULTS The entire setup can be reset to the factory defaults. 1. From the Set-Up menu, use the Down arrow to highlight Fact Deflts. 2. Press the Checkmark two times to reset the ice machine. The display will return to the Set-Up menu.
Page 82: Service Menu
Service Menu From the Main menu, use the Down arrow to navigate to Service and press the Checkmark. This menu is intended for the use of trained service personnel. Below is an overview of the service menu. The following pages list the navigation options available by drilling into the menus with the Right arrow.
Page 83 Part Number STH025 8/12...
Page 84: Data History
DATA HISTORY Press the Checkmark with Data History highlighted to view a list of eight-digit dates (Current, Current + 1 ... Current + 5), along with Lifetime (be sure to use the Down arrow to reveal all the available information). For each of the dates, use the Checkmark to view: •...
Page 85: Real Time Data
REAL TIME DATA Press the Checkmark with Real Time Data highlighted to get readings on Time & Temp, Inputs and Outputs (be sure to use the Down arrow to reveal all the available information). Use the Checkmark to view: Time and Temperature •...
Page 86 Outputs • Status Off/On - Displays stage of cycle • Water Pump Off/On • Hot Gas Valve 1 Off/On • Hot Gas Valve 2 Off/On • Air Pump Off/On • Water Valve Off/On • Dump Valve Off/On • Compressor Control Off/On •...
Page 87: Diagnostics
DIAGNOSTICS Press the Checkmark with Diagnostics highlighted to enter screens where you can run diagnostics on the control board, sensors and switches. Control Board • Self Check • Enable Relays • Exit Temperature Sensors • T1 Thermistor Temperature • T2 Thermistor Temperature •...
Page 88: Manual Harvest
MANUAL HARVEST Press the Checkmark with Manual Harvest highlighted to initiate a manual harvest. Manual Harvest • Harvest Started • Exit REPLACE CONTROL BOARD Press the Checkmark with Replace Control Board highlighted to program the replacement control board. The data can copied from the defective control board (refer to “Exporting Data to a Flash Drive”...
Page 89: Event Log Menu
EVENT LOG MENU From the Service menu, use the Down arrow to navigate to Event Log and press the Checkmark. Ensure View ELog is highlighted and press the Checkmark to see the first event code, when it occurred and how many times. Use the Down arrow to view information on subsequent event codes.
Page 90: Event Log
EVENT LOG Refer to the following table for Event Code descriptions. Code Description Long Freeze Cycle Long Harvest Cycle Input Power Loss High Condenser Temperature High Pressure Control Opened Spare Starving TXV Single Evaporator or Low On Charge TXV Fault Single or Dual Circuit Evaporators Flooding Evaporator Fault Single Evaporator, Single Circuit Flooding Evaporator Fault Dual TXV, Dual Circuit...
Page 91 Event Log Detail Detail Event Log Service Definition E-Log Display Text Error Description Definition Long Freeze Long Freeze 6 consecutive 60 Minute Freeze cycles = shut down and flash the SL#1 light on board Long Harvest 3 consecutive - 3.5 Minute Harvests logs SL#2 in memory, but runs until 500 long harvest cycles occur. Long Harvest When power is interrupted to the ice machine the control board will log the event in the ELOG and Power Supply (Event Log only -...
Page 92 Detail Event Log Service Definition Definition E-Log Display Text Error Description The compressor discharge temperature did not increase by at least 10 F, and the evaporator Refrigeration System (Refrig Refig Fault temperature did not decreased by at least 10 F - Measured from Refrigeration Start up or Prechill Fault) Air &...
Page 93 Detail Event Log Service Definition Definition E-Log Display Text Error Description T1 Fault T1 Sensor Each thermistor reading is monitored continuously using six second average values. During Pre-chill T2 Fault T2 Sensor a thermistor had a six second average thermistor values fall outside of the valid temperature range. T3 Fault T3 Sensor T4 Fault...
Page 94: Usb Flash Drive Specifications And Formatting
USB FLASH DRIVE SPECIFICATIONS AND FORMATTING Updating firmware on Indigo™ model ice machines requires a properly formatted 2 GB or smaller USB flash drive. All USB flash drives must be formatted before use to remove any software programs or files currently on the flash drive.
Page 95 Windows XP Computers: 1. Insert USB flash drive; your computer may indicate: • “Found New Hardware” follow the prompts to install the USB flash drive • USB flash drive may auto launch - Close auto launch window. 2. To access Disk Management: •...
Page 96: Upgrading Firmware With A Flash Drive
UPGRADING FIRMWARE WITH A FLASH DRIVE Important The flash drive must be formatted before using, All files and software on the flash drive are removed during the formatting process. Refer to page 92 USB Flash Drive Specifications and Formatting. 1. Drag and drop the files from website or email onto a flash drive.
Page 97 USB Connector Bin Switches Thermostat Display Light Micro Light Thermistors Clean Light Harvest Light SL-1 Light SL-2 Light Dump Valve Transformer Left Bin Switch Light Right Bin Switch Light Water Level Probe Light Display Ice Thickness Probe Light RS485 RT Harvest Bin LED Compressor Battery...
Page 98: Exporting Data To A Flash Drive
EXPORTING DATA TO A FLASH DRIVE Data can be copied from the control board memory to a flash drive and used to transfer setup and/or cycle data to a replacement control board or to transfer setup information to multiple ice machines. Data may also be requested by service department personnel for analysis or as an aid to troubleshooting.
Page 99 6. Press the Checkmark. USB Stick will appear highlighted. 7. Press the Checkmark again. A submenu with Export ALL and Export Setup appears. 8. Highlight Export ALL or Export Setup, depending on your requirements, and press the Checkmark. A display of instructions will appear. 9.
Page 100: Operational Checks
Operational Checks GENERAL Manitowoc ice machines are factory-operated and adjusted before shipment. Normally, new installations do not require any adjustment. To ensure proper operation, always follow the Operational Checks: • when starting the ice machine for the first time •...
Page 101: Ice Thickness Check
ICE THICKNESS CHECK After a harvest cycle, inspect the ice cubes in the ice storage bin. The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (3 mm). NOTE: Make sure the water curtain or splash shield is in place when performing this check.
Page 102: Sequence Of Operation
Sequence of Operation SELF CONTAINED AIR OR WATER COOLED The power button must be depressed and the NOTE: water curtain/ice dampers must be in place on the evaporator before the ice machine will start. Initial Start-Up or Start-Up After  Automatic Shut-Off 1.
Page 103 Freeze Sequence 3. Prechill The compressor is on for 30 seconds (60 seconds initial cycle) to lower the temperature of the evaporator(s) before the water pump is energized. The water fill valve will energize and remain on until water touches the low and high, water level probes. 4.
Page 104 Harvest Sequence 5. Water Purge The air pump(s) (when used) and the harvest valve(s) open at the beginning of the water purge to divert hot refrigerant gas into the evaporator. The water pump(s) continues to run, and the water dump valve energizes to purge the water in the water trough.
Page 105 Control Board Timers The control board has the following non-adjustable timers: • The ice machine is locked into the freeze cycle for 6 minutes before a harvest cycle can be initiated. This can be overridden by initiating a manual harvest. Refer to “Manual Harvest” on page 88 •...
Page 106: Energized Parts Chart Self Contained Models
ENERGIZED PARTS CHART SELF CONTAINED MODELS Self Contained Air & Water-Cooled Models Ice Making Water Water Length Water Harvest Contactor Condenser Sequence of Inlet Dump Compressor Pump Valve(s) Pump(s)* Coil Fan Motor of Time Valve Valve Operation Start-Up 45 Seconds 1.
Page 107 Self Contained Air & Water-Cooled Models (Continued) Ice Making Water Water Length Water Harvest Contactor Condenser Sequence of Inlet Dump Compressor Pump Valve(s) Pump(s)* Coil Fan Motor of Time Valve Valve Operation Harvest Sequence Factory May Cycle Set at On/Off 45 Seconds 5.
Page 108: Remote Condenser
REMOTE CONDENSER The power button must be depressed and the NOTE: water curtain/ice dampers must be in place on the evaporator before the ice machine will start. Initial Start-Up or Start-Up After Automatic Shut-Off 1. Water Purge Before the compressor starts, the water pump and water dump solenoid are energized for 45 seconds, to completely purge the ice machine of old water.
Page 109 Freeze Sequence 3. Prechill The compressor is on for 30 seconds (60 seconds initial cycle) to lower the temperature of the evaporator(s) before the water pump is energized. The water fill valve will energize and remain on until water touches the low and high water level probes. 4.
Page 110 Harvest Sequence 5. Water Purge The air pump (when used) the harvest valve(s) and harvest pressure regulating valve (HPR) energize to divert hot refrigerant gas to the evaporator. The water pump continues to run, and the water dump valve energizes to purge the water in the water trough. 6.
Page 111: Energized Parts Chart Remote Models
ENERGIZED PARTS CHART REMOTE MODELS Remote Air-Cooled Condenser Models Energized Parts Chart Harvest Ice Making Contactor Valve Water Water Length Water Coil Condenser Sequence of (Right) Inlet Dump Compressor Pump Pumps* Liquid Line Fan Motor of Time (When Valve Valve Operation Solenoid Used)
Page 112 Remote Air-Cooled Condenser Models Energized Parts Chart (Continued) Harvest Ice Making Contactor Valve Water Water Length Water Coil Condenser Sequence of (Right) Inlet Dump Compressor Pump Pumps* Liquid Line Fan Motor of Time (When Valve Valve Operation Solenoid Used) Harvest Sequence Factory Set at 45 Seconds...
Page 113: Troubleshooting
Troubleshooting Safety Limits In addition to standard safety controls, the control board has built in safety limit controls which protect the ice machine from major component failures. Safety limits are stored and indicated by the control board. The number of cycles required to stop the ice machine varies for each safety limit.
Page 114: Analyzing Why A Safety Limit Stopped The Ice Machine
Eliminate all electrical components and external causes first. If it appears that the refrigeration system is causing the problem, use Manitowoc’s Freeze Cycle Refrigeration System Operational Analysis Table, along with detailed charts, checklists, and other references to determine the cause.
Page 115: Safety Limit #1
• Contactor not energizing • Compressor electrically non-operational • Defective fan cycling control • Defective fan motor Miscellaneous • Non-Manitowoc components • Improper refrigerant charge • Defective head pressure control • Defective harvest valve • Defective compressor • TXV starving or flooding (check bulb mounting) •...
Page 116: Safety Limit #2
Electrical System • Ice thickness probe out of adjustment • Bin switch closed/defective • Premature harvest Refrigeration System • Non-Manitowoc components • Improper refrigerant charge • Defective head pressure control valve • Defective harvest valve • TXV flooding (check bulb mounting) •...
Page 117: Troubleshooting By Symptom
Troubleshooting By Symptom The troubleshooting procedures follow flow charts. There are four symptoms, the symptom that you are experiencing will determine which flow chart to use. The flow chart asks yes and no questions to determine the problem. The flow chart will direct you to a procedure to correct the problem.
Page 118: Reset To Factory Defaults
RESET TO FACTORY DEFAULTS Before starting troubleshooting procedures, reset the control board to factory defaults to prevent misdiagnosis. Before resetting to factory defaults do one of the following: A. Copy settings to a usb device and flash settings into the control board when diagnostics are complete.
Page 119: Symptom #1 Ice Machine Will Not Run
SYMPTOM #1 ICE MACHINE WILL NOT RUN START Does the ice machine start Is there an Alert or Refer to Alert/Error Log Is the display interface when the Power button is pushed? Error Logged? energized and functioning? Install Ground Micro light flashing? Are there any lights on or flashing on the Unit has...
Page 120 Line voltage at wires 55 & 56 on 9 pin control board connector? Install the water curtain/damper. Supply power to the ice machine Control board fuse is good? Bin switch light on? All water curtains or (Multi evap all lights on?) dampers in place? Replace fuse &...
Page 121 Is magnet on the Replace the water water curtain/damper curtain/damper. Press power button to start ice making, does safety limit light flash? Refer to bin switch diagnostics. Ice machine starts? Refer to Safety Limit #1 long freeze cycle Which light flashes? Refer to display &...
Page 122: Symptom #2 - Low Production, Long Freeze Cycle
SYMPTOM #2 - LOW PRODUCTION, LONG FREEZE CYCLE Ice Machine has a Long Freeze Cycle.  Ice Formation is Thick  or  Thin on Inlet or Outlet of Evaporator  or  Low Production How to Use the Freeze Cycle Refrigeration System Operational Analysis Table GENERAL These tables must be used with charts, checklists and...
Page 123 PROCEDURE Step 1 Complete the “Operation Analysis” column. Read down the left “Operational Analysis” column. Perform all procedures and check all information listed. Each item in this column has supporting reference material to help analyze each step. While analyzing each item separately, you may find an “external problem”...
Page 124 Before Beginning Service Ice machines may experience operational problems only during certain times of the day or night. A machine may function properly while it is being serviced, but malfunctions later. Information provided by the user can help the technician start in the right direction, and may be a determining factor in the final diagnosis.
Page 125: Symptom #2 - Freeze Cycle Refrigeration System Operational Analysis Tables
SYMPTOM #2 - FREEZE CYCLE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES SINGLE EVAPORATOR, SINGLE EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Air-Temperature Entering Condenser_____________ Ice Production Water Temperature Entering Ice Machine_________ Reference “Ice Production Published 24 hour ice production________________ Check”...
Page 126 SINGLE EVAPORATOR, SINGLE EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Freeze Cycle  If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure problem checklist page 140 to eliminate problems and/or components not listed on this table before proceeding. Discharge Pressure...
Page 127 SINGLE EVAPORATOR, SINGLE EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Wait 5 minutes into the freeze cycle. Compare temperatures of evaporator inlet and evaporator outlet. Inlet and outlet  within 7°F (4°C) Inlet and outlet of each other Inlet T3 __________°...
Page 128 SINGLE EVAPORATOR, SINGLE EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Wait 5 minutes into the The harvest valve inlet is The harvest valve inlet The harvest valve inlet The harvest valve inlet freeze cycle. is Cool enough to hold is Cool enough to hold is Cool enough to hold Compare temperatures of...
Page 129 SINGLE EVAPORATOR, SINGLE EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Final Analysis Enter total number of boxes Low On Charge checked in each column. Harvest Valve -Or- TXV Flooding Compressor Reference “Final Analysis - Self- Leaking TXV Starving contained Air, Water &...
Page 130 SINGLE EVAPORATOR, DUAL EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Air-Temperature Entering Condenser_____________ Ice Production Water Temperature Entering Ice Machine_________ Published 24 hour ice production________________ Calculated (actual) ice production_______________ NOTE: The ice machine is operating properly if the ice fill patterns is normal and ice production is within 10% of charted capacity.
Page 131 SINGLE EVAPORATOR, DUAL EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Freeze Cycle  If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure problem checklist page 140 to eliminate problems and/or components not listed on this table before proceeding. Discharge Pressure...
Page 132 SINGLE EVAPORATOR, DUAL EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis Discharge Line Temperature Record freeze cycle discharge line temperature at Discharge line temp. Discharge line temp. Discharge line temp. Discharge line temp. the end of the freeze cycle 150°F (65°C) 150°F (65°C) less than...
Page 133 Ice Production Check The amount of ice a machine produces directly relates to the operating water and air temperatures. This means a condensing unit with a 70°F (21°C) outdoor ambient temperature and 50°F (10°C) water produces more ice than the same model condensing unit with a 90°F (32°C) outdoor ambient temperature and 70°F (21°C) water.
Page 134 • Another ice machine is required. • More storage capacity is required. • Relocating the existing equipment to lower the load conditions is required. Contact the local Manitowoc Distributor for information on available options and accessories. Part Number STH025 8/12...
Page 135 Installation/Visual Inspection Checklist Inadequate Clearances • Check all clearances on sides, back and top. Reference “Clearance Requirements” on page 31 Ice machine is not level • Level the ice machine Condenser is dirty • Clean the condenser Water filtration is plugged (if used) •...
Page 136 Water System Checklist A water-related problem often causes the same symptoms as a refrigeration system component malfunction. Water system problems must be identified and eliminated prior to replacing refrigeration components. Water area (evaporator) is dirty • Clean as needed Water inlet pressure not between 20 and 80 psig (1-5 Bar, 138-552 kPa).
Page 137 Evaporator ice formation pattern analysis is helpful in ice machine diagnostics. Analyzing the ice formation pattern alone cannot diagnose an ice machine malfunction. However, when this analysis is used along with Manitowoc’s Freeze Cycle Refrigeration System Operational Analysis Tables, it can help diagnose an ice machine malfunction.
Page 138 2. Extremely Thin at Evaporator Outlet There is no ice, or a considerable lack of ice formation, at the outlet of the evaporator. Examples: No ice at all on the outlet half of the evaporator, but ice forms on the inlet half of the evaporator.
Page 139 One Evaporator, Two TXV 30” Models Tubing routing for one evaporator with two TXV’s is different. The evaporator has two inlets and outlets. Fill pattern varies depending on which circuit is affected, Extremely Thin at the Evaporator Outlet will first be visible either 1/4 or 3/4 of the way down the evaporator.
Page 140 One Evaporator, Two TXV 48” Models Tubing routing for one evaporator with two TXV’s is different. The evaporator has two inlets and outlets. Fill pattern varies depending on which circuit is affected, Extremely Thin at the Evaporator Outlet will first be visible 1/3 of the way down the evaporator.
Page 141 Analyzing Discharge Pressure in the Freeze Cycle 1. Determine the ice machine operating conditions: Air temp. entering condenser______ Air temp. around ice machine______ Water temp. entering sump trough______ 2. Refer to Operating Pressure table (starting on page 221) for ice machine being checked. Use the operating conditions determined in step 1 to find the published normal discharge pressures.
Page 142 • Dirty/Defective water regulating valve • Water regulating valve out of adjustment Other • Overcharged • Non-condensable (air) in system • Wrong type of refrigerant • Non-Manitowoc components in system • High side refrigerant lines/component restricted Part Number STH025 8/12...
Page 143 Defective fan cycle control, stuck closed (page 185) Water Cooled Condensers • Water Regulating Valve out of adjustment • Water Regulating Valve Defective Other • Undercharged • Wrong type of refrigerant • Non-Manitowoc components in system • Liquid line/component restricted Part Number STH025 8/12...
Page 144 Analyzing Suction Pressure The suction pressure gradually drops throughout the freeze cycle. The actual suction pressure (and drop rate) changes as the air and water temperature entering the ice machine changes. These variables also determine the freeze cycle times. To analyze and identify the proper suction pressure drop throughout the freeze cycle, compare the published suction pressure to the published freeze cycle time.
Page 145 Pressure High Checklist” page 142) • Wrong type of refrigerant • Non condensable in system Components • Harvest valve leaking • Harvest pressure solenoid valve leaking • TXV flooding • Defective compressor Other • Non-Manitowoc components in system Part Number STH025 8/12...
Page 146 Improper Refrigerant Charge • Undercharged • Wrong type of refrigerant Other • Non-Manitowoc components in system • Improper water supply over evaporator – refer to “Water System Checklist” (page 136) • Restricted/plugged liquid line drier • Restricted/plugged tubing in suction side or liquid line of refrigeration system •...
Page 147 The temperatures of the suction lines entering and leaving the evaporator alone cannot diagnose an ice machine. However, comparing these temperatures during the freeze cycle, along with using Manitowoc’s Freeze Cycle Refrigeration System Operational Analysis Table, can help diagnose an ice machine malfunction.
Page 148 The best way to diagnose a harvest valve is by using Manitowoc’s Ice Machine Freeze Cycle Refrigeration System Operational Analysis Table. Use the following procedures to determine if a harvest valve is remaining partially open during the freeze cycle.
Page 149 Findings Comments The inlet of the harvest Normal Operation valve is cool enough to This is normal as the discharge touch and the line should always be too hot to compressor discharge touch and the harvest valve line is hot. inlet, although too hot to touch during harvest, should be cool enough to touch after 5 minutes...
Page 150 Discharge Line Temperature Analysis GENERAL Knowing if the discharge line temperature is increasing, decreasing or remaining constant can be an important diagnostic tool. Compressor discharge line temperature on a normally operating ice machine steadily increases throughout the freeze cycle. Ambient air temperatures affect the discharge line temperature.
Page 151 Water Regulating Valve Problem (Freeze Cycle) Valve not maintaining discharge pressure. • Valve incorrectly set, dirty or defective. Adjust valve to correct discharge pressure for your model (refer to cycle times/24 hour productions charts), clean or replace valve. Discharge pressure extremely high; Liquid line entering receiver feels hot.
Page 152 Final Analysis - Self-contained Air, Water & Remote Condenser Models The column with the highest number of Checkmarks identifies the refrigeration problem. COLUMN 1 - HARVEST VALVE LEAKING Replace the valve as required. COLUMN 2 - LOW CHARGE/TXV STARVING Normally, a starving expansion valve only affects the freeze cycle pressures, not the harvest cycle pressures.
Page 153 COLUMN 3 - TXV FLOODING OR REFRIGERANT OVERCHARGE A loose or improperly mounted expansion valve bulb causes the expansion valve to flood. Check bulb mounting, insulation, etc., before changing the valve. Verify refrigerant amount is correct by weighing recovered refrigerant before replacing a TXV. COLUMN 4 - COMPRESSOR Replace the compressor.
Page 154: Symptom #3 & #4 Harvest Problems  Self-Contained Air, Water & Remote Con- Denser Models
SYMPTOM #3 & #4 HARVEST PROBLEMS  SELF-CONTAINED AIR, WATER & REMOTE CONDENSER MODELS Melted Out Ice Cube Normal Ice Cube Definition of a harvest problem; At the end of a 3.5 minute harvest cycle the slab of ice is still contacting the evaporator.
Page 155: Symptom #3 Self-Contained Air Or Water-Cooled
SYMPTOM #3 SELF-CONTAINED AIR OR WATER-COOLED Ice Machine Will Not Harvest - Freeze Cycle is Normal and Ice Cubes are Not Melted After Harvest START Refer to Low production, Discharge line temperature is normal Symptom #2 at the end of the freeze cycle? Normal fill pattern, long Freeze Cycle harvest cycle, Possible SL #2,...
Page 156 Fan cycling Fan cycling Self Contained control operates correctly control opens below setpoint Air-cooled Condenser? in freeze cycle? in harvest cycle? Replace Fan Are you sure Discharge line Cycling Control temperature is normal? Repeat this flowchart & verify all data Self Contained Maintains correct Stops water flow 100%...
Page 157: Symptom #3 - Remote Condenser
SYMPTOM #3 - REMOTE CONDENSER Traditional Remote Ice Machine - Long Harvest/Low Production/Intermittent Safety Limit 2 START Normal ice fill, long harvest cycle, Fails at night or in low possible SL #2, back of cubes are ambient - Operates not melted at the end of harvest cycle normally above 70F/21C Liquid Line Wet condenser...
Page 158 Is head pressure high & Is harvest valve energized? suction pressure low in harvest? Replace Harvest Valve Refer to Sequence of Operation & Wiring Diagrams Is head pressure low & suction pressure low in harvest? Refer to Harvest Pressure Regulating Valve Diagnostics Refer to Symptom #4 - Will Not Harvest, Freeze...
Page 159: Symptom #4 Self-Contained Air, Water-Cooled Or Remote
SYMPTOM #4 SELF-CONTAINED AIR, WATER-COOLED OR REMOTE Ice Machine Will Not Harvest - Freeze Cycle is Normal and Ice Cubes are Melted After Harvest START Are back of the cubes Is Ice Level Ice melted at end of Machine level? Machine harvest cycle? Refer to...
Page 160 Is the evaporator dirty? (Dry evaporator first then check) Discharge line temperature is normal at the end of the freeze cycle? Refer to Symptom #2 Refer to Heavily Scaled Refer to Manual Freeze Cycle Operational Cleaning Procedure Cleaning Procedure Analysis Table...
Page 161: Component Check Procedures
Component Check Procedures Electrical Components CONTROL BOARD, DISPLAY BOARD AND TOUCH FUNCTION The control board, display board and touch pad provide user input and control the ice machine sequence of operation. NOTE: Anytime power is supplied to wires #55 & #56 on the control board, the “Display”...
Page 162 Control Board Diagnostics 1. Micro light is not flashing a heartbeat. 2. Disconnect line voltage power supply to the ice machine and wait a minimum of 15 seconds, then reapply power. A. Micro light flashes - continue with step 3. B.
Page 163 Touch Pad Diagnostics Follow the control board diagnostics to “Status Passed”. Perform the following keystrokes on the display. • Display reads Status Passed, press the right arrow • Display reads Pass Yes, press the right arrow • Display reads Key Pad Test, press the right arrow 4.
Page 164: Control Board Relay Test
CONTROL BOARD RELAY TEST The control board can be set to energize all relays for 3.5 minutes. This allows testing to verify control board relays are closed and line voltage is available for ice machine components - Water pump, dump valve, water inlet valve, harvest valve(s), air compressor(s), contactor/compressor/fan motor - The fan cycle control must close to energize the fan motor.
Page 165: Programming A Replacement Control Board
PROGRAMMING A REPLACEMENT CONTROL BOARD Indigo™ replacement control boards require the Model number to be entered to activate the appropriate look up tables for operation and diagnostic. This can be done two different ways, USB Setup or Manual Setup. USB Setup - Applicable when the control board is operational and has a mechanical issue such as a sticking relay.
Page 166 5. Scroll down until brackets are in the space below “Input Model #”. Press the right arrow to activate the blinking cursor, then use the up/down arrows to select the first character in the model number. Use the right arrow to move to the next space. Add characters in this manner until the model number is complete.
Page 167: Main Fuse
MAIN FUSE FUNCTION The control board fuse stops ice machine operation if electrical components fail, causing high amp draw. SPECIFICATIONS The main fuse is 250 Volt, 8 amp. Warning High (line) voltage is applied to the control board (terminals #55 and #56) at all times. Removing the control board fuse or pressing the On/Off button will not remove the power supplied to the control board.
Page 168: Bin Switch
BIN SWITCH FUNCTION Movement of the water curtain/ice dampers control bin switch operation. The bin switch has two main functions: 1. Terminating the Harvest cycle and returning the ice machine to the Freeze cycle. This occurs when the bin switch is opened and closed again within 30 seconds during the Harvest cycle.
Page 169 Diagnostics SYMPTOMS Bin Switch Fails Open G Model control boards or E Model control boards with firmware version Rev.2.047 or higher. • The ice machine will not start an ice making cycle and the display indicates “Full Bin”. • The ice machine displays “Full Bin Remove Ice” in the clean cycle.
Page 170 DIAGNOSTICS 1. Verify bin switch, curtain/damper and curtain/ damper magnet are in place. • Press the Menu button. • Scroll down to Service and press right arrow. • Scroll down to Diagnostics and press right arrow • Scroll down to Inputs and press right arrow to display curtain switch readings (Curt SW1, Curt SW2, etc).
Page 171: Water Level Control Circuitry
WATER LEVEL CONTROL CIRCUITRY FUNCTION The water level probe controls the water level by sensing whether water is or is not contacting the water level probe. The water level probe has three sensing probes. Two probes are equal in length and are used to measures conductivity for diagnostics, ice clarity and water miser options.
Page 172 Prechill & Freeze Cycle Operation The water inlet valve energizes and de-energizes in conjunction with the water level probe located in the water trough. • The water inlet valve is ON when there is no water in contact with the water level probes. •...
Page 173 Diagnostics SYMPTOMS • Water trough overfills • Water trough will not fill WATER TROUGH OVERFILLING DURING THE FREEZE CYCLE Step 1 Press the power button and turn off the ice machine. Step 2 If water continues to flow with the ice machine off, disconnect power.
Page 174 Step 5 Disconnect the water level probe wiring harness from the control board and ohm harness and water level probe. Normal readings will show no resistance. Black White Short Probe Ohm water Level Probe and Wiring Harness Part Number STH025 8/12...
Page 175 Step 6 When all ohm tests are normal, replace the control board. When any measurement fails, disconnect the wiring harness from the water level probe and ohm the water level probe with the wiring harness removed from the circuit. Results will determine whether the wiring harness or probe will need replacement.
Page 176 WATER TROUGH WILL NOT FILL Step 1 Verify water is supplied to the ice machine. Step 2 Scroll to Service/Diagnostics/Inputs and press down arrow until Wtr Low and Wtr High are displayed. A. Yes is displayed - Control board is receiving a sensing water signal.
Page 177: Ice Thickness Probe (Harvest Initiation)
ICE THICKNESS PROBE (HARVEST INITIATION) FUNCTION The ice thickness probe senses ice on the evaporator and signals the control board to start a harvest cycle. SPECIFICATIONS Freeze Time Lock-In Feature The ice machine control system incorporates a 6 minute freeze time lock-in feature. This prevents the ice machine from short cycling in and out of harvest.
Page 178 Ice Thickness Check The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8 in. (32 mm). Make sure the water curtain/splash shields NOTE: are in place when performing this check. It prevents water from splashing out of the water trough. Remove the curtain/splash shield to make an adjustment, then replace immediately after the adjustment is made.
Page 179 Diagnostics ICE MACHINE CYCLES INTO HARVEST BEFORE ICE CONTACTS THE ICE THICKNESS PROBE Premature harvest symptoms • Low ice production • Thin ice in bin • Freeze cycles are faster than published cycle times 1. Turn off power and inspect ice thickness probe for physical damage.
Page 180 5. Ohm Ice Thickness Probe NOTE: Verify meter leads are properly connected to VOM with the red meter lead connected to positive & the black meter lead connected to negative Disconnect Ice Thickness Probe from control • board Connect red meter lead to the red wire and the •...
Page 181 ICE MACHINE DOES NOT CYCLE INTO HARVEST Will not harvest symptoms • Low ice production • Thick ice in bin • Large sheet of ice on evaporator • Harvest cycle doesn’t start • Freeze cycles are longer than published cycle times If ice is on the evaporator initiate a manual harvest cycle by performing the following keystrokes.
Page 182: High Pressure Cutout (Hpco) Control
HIGH PRESSURE CUTOUT (HPCO) CONTROL FUNCTION Stops the ice machine if subjected to excessive high- side pressure. The HPCO control is normally closed, and opens on a rise in discharge pressure. SPECIFICATIONS. Specifications Cut-Out Cut-In 450 psig ±7 300 psig ±10 (3102 kPa ±48 31 bar ±.48) (2068 kPa 20.68 bar) Automatic Reset...
Page 183 CHECK PROCEDURE Symptom #1 Machine is off and the display indicates “Delay xx min, HPCO Active”. 1. Leave all wiring connectors attached and perform testing within the 60 minute time delay period 2. Check for line voltage at P9 connector on control board (Two wire connector adjacent to 9 pin connector).
Page 184 Symptom #2 Machine is running and the display has a flashing alert triangle and indicates “HPC Fault” after the left arrow is pressed 1. Navigate to the event log on the Service menu. Scroll down to HPC Fault EO5. Open the event and view when and how often HPCO Fault has occurred.
Page 185: Fan Cycle Control
FAN CYCLE CONTROL FUNCTION Cycles the fan motor on and off to maintain proper operating discharge pressure. The fan cycle control closes on an increase, and opens on a decrease in discharge pressure. SPECIFICATIONS Specifications Cut-Out Model Cut-In (Close) (Open) I0300 / I0320 I0520 / 250 ±5 200 ±5...
Page 186: Thermistors
THERMISTORS FUNCTION Thermistor resistance values change with temperature. The value supplied to the control board is used to identify temperature at the thermistor location. SPECIFICATIONS Temperature of Thermistor Resistance °C °F K Ohms (x 1000) -30° - -20° -22° - -4° 820.85 - 466.35 -20°...
Page 187 Thermistor Matrix Four thermistors are located on the ice machine. They are labeled T1, T2, T3, T4. Part Number STH025 8/12...
Page 188 SYMPTOM Alert icon on the display is flashing and the alert indicates a T1, T2, T3, or T4 Fault. CHECK PROCEDURE • Press the Menu button. • Scroll down to Service and press right arrow. • Scroll down to Diagnostics and press right arrow •...
Page 189: Harvest Assist Air Pump
HARVEST ASSIST AIR PUMP FUNCTION The air pump helps break the vacuum between the sheet of ice and the evaporator which results in shorter harvest cycles. SPECIFICATIONS 115 Volt or 230 Volt - matches the ice machine voltage. CHECK PROCEDURE 1.
Page 190: Compressor Electrical Diagnostics
COMPRESSOR ELECTRICAL DIAGNOSTICS The compressor does not start or will trip repeatedly on overload. Check Resistance (Ohm) Values Compressor windings can have very low ohm NOTE: values. Use a properly calibrated meter. Perform the resistance test after the compressor cools. The compressor dome should be cool enough to touch (below 120°F/49°C) to assure that the overload is closed and the resistance readings will be accurate.
Page 191 CHECK MOTOR WINDINGS TO GROUND Check continuity between all three terminals and the compressor shell or copper refrigeration line. Scrape metal surface to get good contact. If continuity is present, the compressor windings are grounded and the compressor should be replaced. COMPRESSOR DRAWING LOCKED ROTOR To determine if the compressor is seized, check the amp draw while the compressor is trying to start.
Page 192: Diagnosing Start Components
DIAGNOSING START COMPONENTS If the compressor attempts to start, or hums and trips the overload protector, check the start components before replacing the compressor. Capacitor Visual evidence of capacitor failure can include a bulged terminal end or a ruptured membrane. Do not assume a capacitor is good if no visual evidence is present.
Page 193 PTCR The PTCR allows current to flow through the start winding at compressor startup. Current flow heats the ceramic discs in the PTCR. The electrical resistance increases with temperature and stops all except a trickle of current flow through the start winding. The small flow of current keeps the PTCR hot (260°F/ 127°C) and the start winding out of the circuit.
Page 194 PTCR Operation Check 1. Visually inspect the PTCR. Check for signs of physical damage. The PTCR case temperature may reach NOTE: 210°F (100°C) while the compressor is running. This is normal. Do not change a PTCR just because it is hot. 2.
Page 195: Refrigeration Components
Refrigeration Components HEAD PRESSURE CONTROL VALVE Manitowoc remote systems require head pressure control valves with special settings. Replace defective head pressure control valves only with “original” Manitowoc replacement parts. Refrigerant Charge Verification The correct amount of refrigerant (name plate charge) is required to operate correctly at all ambient conditions.
Page 196 Freeze Cycle Operation All Models The R404A head pressure control valve is non adjustable. At ambient temperatures of approximately 70°F (21°C) or above, refrigerant flows through the valve from the condenser to the receiver inlet. At temperatures below this (or at higher temperatures if it is raining), the head pressure control dome’s nitrogen charge closes the condenser port and opens the bypass port from the compressor discharge line.
Page 197 A head pressure control valve that will not NOTE: bypass, will function properly with condenser air temperatures of approximately 70°F (21°C) or above. When the temperature drops below 70°F (21°C), the head pressure control valve fails to bypass and the ice machine malfunctions.
Page 198 Harvest Cycle REMOTE CONDENSER The head pressure control cycles into full bypass due to the pressure drop when the harvest valve opens. Refrigerant flows from the compressor to the evaporator through the harvest valve and the head pressure valve is out of the circuit. Undercharge Symptoms •...
Page 199: Harvest Pressure Regulating (Hpr) System
HARVEST PRESSURE REGULATING (HPR) SYSTEM REMOTE CONDENSER ONLY GENERAL The harvest pressure regulating (HPR) system includes: • Harvest pressure regulating solenoid valve (HPR solenoid). This is an electrically operated valve which opens when energized, and closes when de-energized. INLET OUTLET FLOW HPR SOLENOID •...
Page 200 FREEZE CYCLE The HPR system is not used during the freeze cycle. The HPR solenoid is closed (de-energized), preventing refrigerant flow into the HPR valve. HARVEST CYCLE During the harvest cycle, the check valve in the discharge line prevents refrigerant in the remote condenser and receiver from back feeding into the evaporator and condensing to liquid.
Page 201 3. Freeze time normal?  (Refer to Cycle Times/Refrigerant Pressures/24 Hour Ice Production Charts page 221) Shorter freeze cycles - Refer to head pressure control valve diagnostics page 195. Longer freeze cycles - Refer to water system checklist page 136, then refer to Refrigeration Diagnostic Procedures.
Page 202: Water Regulating Valve
WATER REGULATING VALVE Water-Cooled Models Only FUNCTION The water regulating valve maintains the freeze cycle discharge pressure. CHECK PROCEDURE 1. Determine if the head pressure is high or low (refer to cycle time/24 hour ice production and operational pressure chart for the model you are servicing).
Page 203: Refrigerant Recovery/Evacuation
Important Replace the liquid line drier after recovering the refrigerant and before evacuating and recharging. Use only a Manitowoc (OEM) liquid line filter-drier to prevent voiding the warranty. Connections Manifold gauge sets must utilize low loss fittings to comply with U.S.
Page 204 Self-Contained Recovery/Evacuation 1. Press the power button and cycle the ice machine off. 2. Install manifold gauges, scale and recovery unit or two-stage vacuum pump and open high and low side on manifold gauges. MANIFOLD SET OPEN OPEN LOW SIDE HIGH SIDE ACCESS ACCESS...
Page 205 Self-Contained Charging Procedures Important The charge is critical on all Manitowoc ice machines. Use a scale to ensure the proper charge is installed. 1. Be sure the ice machine is off. MANIFOLD SET CLOSED OPEN LOW SIDE HIGH SIDE ACCESS...
Page 206 2. Close the vacuum pump valve, the low side service valve, and the low side manifold gauge valve. 3. Open the high side manifold gauge valve. 4. Open the charging cylinder and add the proper refrigerant charge (shown on nameplate) through the discharge service valve.
Page 207: Remote Condenser Model Procedure
Important Replace the liquid line drier after recovering the refrigerant and before evacuating and recharging. Use only a Manitowoc (O.E.M.) liquid line filter drier to prevent voiding the warranty. Part Number STH025 8/12...
Page 208 Without it, the magnetic check valves would close when the pressure drops during evacuation, preventing complete evacuation of the condenser. Manitowoc recommends using an access NOTE: valve core removal and installation tool on the discharge line quick-connect fitting. This permits access valve core removal.
Page 209 REMOTE CONDENSER RECOVERY/EVACUATION 1. Press the power button to stop the ice machine. 2. Install manifold gauges, scale and recovery unit or two-stage vacuum pump. 3. Open high and low side on the manifold gauge set. 4. Perform recovery or evacuation: A.
Page 210 ACCESS REMOTE RECOVERY/EVACUATION CONNECTIONS Part Number STH025 8/12...
Page 211 Remote Charging Procedures 1. Close the vacuum pump valve and the low side manifold gauge valve. 2. Open the refrigerant cylinder and add the proper refrigerant charge (shown on nameplate) into the system high side (receiver outlet valve and discharge lines quick-connect fitting). 3.
Page 212 EVAPORATOR HEAT EXCHANGER EXPANSION VALVE SOLENOID VALVE LOW SIDE ACCESS VALVE STRAINER COMPRESSOR HARVEST PRESSURE HARVEST CHECK SOLENOID PRESSURE VALVE VALVE REGULATING VALVE HIGH SIDE LIQUID ACCESS VALVE LINE SOLENOID DISCHARGE LINE DRIER QUICK CONNECT SCHRAEDER FITTING REMOTE CONDENSER RECEIVER ACCESS VALVE CHECK VALVE HEAD PRESSURE...
Page 213: System Contamination Clean-Up
This section describes the basic requirements for restoring contaminated systems to reliable service. Important Manitowoc Ice assumes no responsibility for the use of contaminated refrigerant. Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company.
Page 214 Contamination Cleanup Chart Required Cleanup Symptoms/Findings Procedure No symptoms or suspicion of Normal contamination evacuation/recharging procedure Moisture/Air Contamination symptoms Refrigeration system open to atmosphere for longer than Mild contamination 15 minutes cleanup procedure Refrigeration test kit and/or acid oil test shows contamination Leak in water cooled condenser...
Page 215: Cleanup Procedure
CLEANUP PROCEDURE Mild System Contamination 1. Replace any failed components. 2. If the compressor is good, change the oil. 3. Replace the liquid line drier. If the contamination is from moisture, use NOTE: heat lamps during evacuation. Position them at the compressor, condenser and evaporator prior to evacuation.
Page 216 Severe System Contamination 1. Remove the refrigerant charge. 2. Remove the compressor and inspect the refrigeration lines. If burnout deposits are found, install a new harvest valve, replace the manifold strainer, TXV and harvest pressure regulating valve. 3. Wipe away any burnout deposits from suction and discharge lines at compressor.
Page 217 Important Dry nitrogen is recommended for this procedure. This will prevent CFC release. 9. Follow the normal evacuation procedure, except replace the evacuation step with the following: A. Pull vacuum to 1000 microns. Break the vacuum with dry nitrogen and sweep the system.
Page 218: Replacing Pressure Controls Without Removing Refrigerant Charge
REPLACING PRESSURE CONTROLS WITHOUT REMOVING REFRIGERANT CHARGE This procedure reduces repair time and cost. Use it when any of the following components require replacement, and the refrigeration system is operational and leak-free. • Fan cycle control (air cooled only) • Water regulating valve (water cooled only) •...
Page 219: Liquid Line Filter-Driers
LIQUID LINE FILTER-DRIERS The filter-driers used on Manitowoc ice machines are manufactured to Manitowoc specifications. The difference between a Manitowoc drier and an off- the-shelf drier is in filtration. A Manitowoc drier has dirt-retaining filtration, with fiberglass filters on both the inlet and outlet ends.
Page 220: Total System Refrigerant Charge
TOTAL SYSTEM REFRIGERANT CHARGE NOTE: All machines listed use R-404A refrigerant - This information is for reference only. Refer to the ice machine serial number tag to verify the system charge. Serial plate information overrides information listed on these pages. Additional Maximum Model...
Page 221: Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts
Charts Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts These charts are used as guidelines to verify correct ice machine operation. Accurate collection of data is essential to obtain the correct diagnosis. • Production and cycle times are for dice cube - Half dice cube cycle times can be 2 - 3 minutes faster, depending on model and ambient temperature.
Page 222: I0300 Series
I0300 SERIES I0300A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 9.6-11.5 10.8-12.9 12.3-14.6 70/21 10.6-12.6...
Page 223: Operating Pressures
I0300W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 10.0-11.9 11.1-13.2 12.3-14.6 70/21 10.2-12.2 11.3-13.4 12.3-14.6...
Page 224: I0320 Series
I0320 SERIES I0320A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 70/21 13.1-15.2 15.7-18.2 16.6-19.3 80/27...
Page 225 I0320W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Around Ice Harvest Water Temperature °F/°C Machine Time 50/10 70/21 90/32 °F/°C 13.3-15.5 15.4-17.9 16.6-19.3 70/21 13.8-16.1 16.0-18.6...
Page 226: I0450 Series
I0450 SERIES I0450A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 10.2-11.9 11.1-12.9 12.1-14.1 70/21 11.4-13.3...
Page 227 I0450W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 9.9-11.6 11.1-12.9 12.1-14.1 70/21 10.2-11.9 11.6-13.5 12.5-14.5...
Page 228: I0500 Series
I0500 SERIES I0500A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 11.0-12.6 12.9-14.8 14.3-16.3 70/21 12.4-14.3...
Page 229 I0500W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 10.5-12.1 13.2-15.1 15.3-17.5 70/21 11.9-13.6 13.7-15.7 15.5-17.7...
Page 230 I0500N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 -20/-29 to 12.3-14.1 12.7-14.7 13.7-15.8 70/21...
Page 231: I0520 Series
I0520 SERIES I0520A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 8.8-10.3 10.2-11.9 11.7-13.7 70/21 9.9-11.6...
Page 232 I0520W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 9.1-10.7 10.9-12.7 11.7-13.7 70/21 9.4-11.0 11.2-13.1 12.1-14.1...
Page 233: I0600 Series
I0600 SERIES I0600A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Harvest Entering Time Water Temperature °F/°C Condenser °F/°C 50/10.0 70/21.1 90/32.2 7.6-9.0 9.5-11.2 10.2-12.0 70/21 8.8-10.4...
Page 234 I0600W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Around Ice Harvest Water Temperature °F/°C Machine °F/°C Time 50/10 70/21 90/32 7.6-9.0 9.0-10.6 9.7-11.4 70/21 8.8-10.4 9.1-10.7...
Page 235 I0600N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 7.9-9.4 9.9-11.7 10.5-12.3 -20/-29 to 70/21 9.0-10.6 9.9-11.7...
Page 236: I0850 Series
I0850 SERIES I0850A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 9.0-10.4 9.8-11.2 10.5-12.1 70/21 10.1-11.6...
Page 237 I0850W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Around Ice Harvest Water Temperature °F/°C Machine °F/°C Time 50/10 70/21 90/32 8.4-9.7 9.5-10.9 10.7-12.3 70/21 8.7-10.1 9.7-11.1...
Page 238 I0850N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 -20/-29 to 9.5-11.0 11.0-12.6 12.0-13.7 70/21...
Page 239: I1000 Series
I1000 SERIES I1000A Self-Contained Air-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 7.5-9.0 8.2-9.8 8.8-10.4 70/21 8.4-10.0...
Page 240 I1000W Self-Contained Water-Cooled Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Harvest Around Ice Water Temperature °F/°C Time Machine °F/°C 50/10 70/21 90/32 7.4-8.9 8.5-10.1 9.4-11.1 70/21 7.8-9.3 8.9-10.6...
Page 241 I1000N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 7.7-9.2 8.6-10.3 9.5-11.3 70/21 8.5-10.1 9.5-11.3...
Page 242: I1200 Series
I1200 SERIES I1200A Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 8.3-9.3 8.9-10.0 9.7-10.8 70/21 9.2-10.3 9.9-11.0 10.6-11.8 80/27...
Page 243 I1200W Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Harvest Around Ice Water Temperature °F/°C Time Machine °F/°C 50/10 70/21 90/32 7.5-8.7 8.4-9.8 9.7-11.2 70/21 8.5-9.9 9.7-11.2 11.1-12.8 80/27 8.6-10.0...
Page 244: I1400 Series
I1400 SERIES I1400A Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 8.3-9.5 9.1-10.4 10.2-11.6 70/21 9.1-10.4 9.9-11.3 11.2-12.8 80/27...
Page 245 I1400W Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Harvest Around Ice Water Temperature °F/°C Time Machine °F/°C 50/10 70/21 90/32 8.2-9.4 9.9-11.3 10.5-12.0 70/21 8.3-9.5 10.0-11.4 10.6-12.1 80/27 8.4-9.6...
Page 246 I1400N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 8.8-10.1 9.9-11.3 10.9-12.3 70/21 9.0-10.2 10.1-11.5...
Page 247: I1800 Series
I1800 SERIES I1800A Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 8.8-10.1 9.6-11.0 10.5-11.9 70/21 9.6-11.0 10.7-12.2 11.5-13.1 80/27...
Page 248 I1800W Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time Air Temp. Harvest Around Ice Water Temperature °F/°C Time Machine °F/°C 50/10 70/21 90/32 8.8-10.0 9.8-11.2 11.0-12.5 70/21 8.9-10.2 10.0-11.3 11.1-12.6 80/27 9.0-10.3...
Page 249 I1800N Remote Air-Cooled Condenser Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 9.2-10.5 10.1-11.5 10.0-12.4 70/21 9.6-11.0 10.6-12.1...
Page 250 This Page Intentionally Left Blank Part Number STH025 8/12...
Page 251: Wiring Diagrams
Diagrams Wiring Diagrams The following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice machine you are servicing. Warning Always disconnect power before working on electrical circuitry. Some components are wired differently on energy efficient machines.
Page 252: I0300/I0450/I0500/I0520
I0300/I0450/I0500/I0520 Self Contained Air & Water-cooled - 1 Ph Part Number STH025 8/12...
Page 253: I0320
I0320 Self Contained Air & Water-cooled - 1 Ph Part Number STH025 8/12...
Page 254: I0500
I0500 Remote Air-cooled - 1Ph Part Number STH025 8/12...
Page 255: I0600/I0850/I1000/I1200
I0600/I0850/I1000/I1200 Self Contained Air & Water-cooled - 1 & 3 Ph Part Number STH025 8/12...
Page 256: I0600/I0850/I1000
I0600/I0850/I1000 Remote Condenser Air-cooled - 1 & 3 Ph Part Number STH025 8/12...
Page 257: I1400/I1800
I1400/I1800 Self Contained Air & Water-cooled - 1 & 3 Ph Part Number STH025 8/12...
Page 258: I1400/I1800
I1400/I1800 Remote Air-cooled - 1 & 3 Ph Part Number STH025 8/12...
Page 259: Electronic Control Board
Electronic Control Board Bin Switches Thermostat Display Light Micro Light Thermistors Clean Light Harvest Light SL-1 Light SL-2 Light Dump Valve Left Bin Switch Light Transformer Right Bin Switch Light Water Level Probe Light Display Ice Thickness Probe Light RS485 RT Harvest Bin LED Compressor...
Page 260: Refrigeration Tubing Schematics
Refrigeration Tubing Schematics SELF-CONTAINED AIR OR WATER -COOLED I0300/I0320/I0520/I0450/I0500/I0600/I0850/I1000 T 4 T h e r m i s t o r E VA P O R ATO R H E AT E X C H A N G E R EXPANSION VALVE T 3 T h e r m i s t o r...
Page 261: Remote Condenser Models
REMOTE CONDENSER MODELS I0500/I0600/I0850/I1000 T4 Thermistor EVAPORATOR HEAT EXCHANGER EXPANSION VALVE T3 Thermistor STRAINER COMPRESSOR HOT GAS SOLENOID VALVE CHECK VALVE REMOTE CONDENSER LIQUID LINE SOLENOID VALVE HARVEST PRESSURE HEAD REGULATING VALVE PRESSURE CONTROL DRIER VALVE T1 Thermistor H.P.R. SOLENOID VALVE CHECK VALVE T2 Thermistor...
Page 262 This Page Intentionally Left Blank Part Number STH025 8/12...
Page 264 Manitowoc Ice 2110 South 26th Street, P.O. Box 1720 Manitowoc, WI 54221-1720, USA Ph: 920-682-0161 Fax: 920-683-7589 Visit us online at: www.manitowocice.com © 2012 Manitowoc Part Number STH025 8/12...

This manual is also suitable for:

B970 series

Manitowoc Indigo Series Technician's Handbook

General Information

How to Read a Model Number

Ice Cube Sizes

Model/Serial Number Location

Model Numbers

Ice Machine Warranty Information

Ice Machine Heat of Rejection

Installation

Lineset Applications

Ice Machine on a Dispenser Installation 33

Cleaning and Sanitizing

Cleaning / Sanitizing Procedure

Preventative Maintenance Cleaning Procedure

Removal from Service/Winterization

Password Entry

Energy Saver Menu

Service Menu

Troubleshooting

Safety Limits

Troubleshooting by Symptom

Component Check Procedures

Electrical Components

Diagnosing Start Components

Refrigerant Recovery/Evacuation

Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts

Wiring Diagrams

Quick Links

Troubleshooting

Related Manuals for Manitowoc Indigo Series

Summary of Contents for Manitowoc Indigo Series