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 02/12...
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 ! 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 handbook, do not proceed, contact Manitowoc Foodservice. We will be happy to provide assistance.
Page 5: Table Of Contents
Table of Contents General Information How to Read a Model Number ..11 Head Sections ....11 Ice Cube Sizes .
Page 6 Maintenance Cleaning and Sanitizing ... . . 37 General ......37 Cleaning/Sanitizing Procedure .
Page 7 Set-Up Menu ..... . . 68 Language ..... . 68 Time &...
Page 8 Operational Checks ....97 General ......97 Ice Thickness Check .
Page 9 Component Check Procedures Electrical Components ....157 Control Board, Display board and Touch Pad ......157 Control Board Relay Test .
Page 10 System Contamination Clean-Up ..216 Determining Severity Of Contamination 216 Cleanup Procedure ....218 Replacing Pressure Controls Without Re- moving Refrigerant Charge ..221 Liquid Line Filter-Driers .
Page 11: General Information
General Information How to Read a Model Number HEAD SECTIONS Part Number STH025 02/12...
Page 12: Ice Cube Sizes
Warning All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.)
Page 13: Model/Serial Number Location
Model/Serial Number Location These numbers are required when requesting information from your local Manitowoc Distributor, service representative, or Manitowoc Ice. The model and serial number are listed on the OWNER WARRANTY REGISTRATION CARD. They are also listed on the MODEL/SERIAL NUMBER DECAL affixed to the front and rear of the ice machine.
Page 14: Model Numbers
Model Numbers AIR-WATER-REMOTE CONDENSER MODELS Self-Contained Self-Contained Remote Air-Cooled Water-Cooled ID0302A ID0303W ---- IY0304A IY0305W ID0322A ID0323W ---- IY0324A IY0325W IR0520A IR0421W ---- ID0522A ID0423W ---- IY0524A IY0425W ID0452A ID0453W ---- IY0455W IY0454A IR0500A IR0501W IR0590N ID0502A ID0503W ID0592N IY0504A IY0505W IY0594N ID0602A...
Page 15: 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 16: 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 17 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 02/12...
Page 18: 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 19 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 20 (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 21 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 02/12...
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Page 23: 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 24: 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 25: 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 26: 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 27: 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 28: 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 29: 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 30: 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 I1490N...
Page 31: 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 32 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.
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Page 35: Component Identification
Component Identification I Model Single Evaporator Models Part Number STH025 02/12...
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Page 37: 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 02/12...
Page 38 (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 39: 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 40: 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 41 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 42 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 43: 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 44 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 45 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 46: 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 47 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 48 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 49 Water Inlet Valve The water inlet valve normally does not require removal for cleaning. Refer to “Water System Checklist” page 132, 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 50 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 51 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 02/12...
Page 52: 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 53: 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.
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Page 57: 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 58: Display Panel
Moves the display from the Home Menu Button: 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. The Left arrow moves the Left and Right Arrows: display to the previous screen, allowing the user to...
Page 59: Menu Navigation Overview
Menu Navigation Overview Menu Navigation Overview AuCS On/Off Clean Timer Button Button Initiated Press Left Arrow From Main Menu Home Screen AuCS Clean Clean Function Function When When Alert Message Present Present Menu Alerts Messages Button Menu Menu Main Menu Function (Optional) Password Entry Energy...
Page 60: 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 61 A cursor (underline) is used within lines Cursor: 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 62: 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 For example, if alerts are appearing in the fourth line of the display: 1.
Page 63: Main Menu
Machine Info Set-Up Energy Saver Factory Defaults Service Exit 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. Part Number STH025 02/12...
Page 64: 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 65: 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 66 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 67: Reset Password To Factory Defaults
RESET PASSWORD TO FACTORY DEFAULTS The password can be reset to the factory defaults when required. The default factory password is 1234. To reset the ice machine to factory defaults use the following procedure. 1. Press the Menu button. 2. From the Main menu, use the Down arrow to highlight Defaults 3.
Page 68: 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. LANGUAGE 1. From the Set-Up menu, use the Down arrow to highlight Language.
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 makes cloudy 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 On
PASSWORD ON A password can be added to prevent unauthorized changes to ice machine settings. 1. From the Set-Up menu, use the Down arrow to highlight Password On. 2. Enter the password and press the Checkmark. 3. Press the Left arrow to return to previous screens and to the Set-Up menu.
Page 73: 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 74: 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 75: Usb Setup
USB SETUP Refer to “Upgrading Firmware with a Flash Drive” and “Exporting Data to a Flash Drive” for more information on this setting. Flash drives must be correctly sized and formatted - 2 gigabytes or smaller, Fat 32 file system, 512 allocation units - Refer to page 89 for full specification and formatting details.
Page 76: 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 77: 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. Important Setting an ice program will take the ice machine out of the On/Off Mode and the Power button will be disabled.
Page 78: Water Miser
WATER MISER Water Miser is a feature that reduces water usage by eliminating flush cycles. Enabling this feature is only recommended for systems with de-ionized or reverse osmosis filtering. 1. From the Energy Saver menu, use the Down arrow to highlight Water Miser. 2.
Page 79: 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 down arrow.
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Page 81: 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 82: 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 83 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 84: 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 85: 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 xx), or entered manually through the Indigo interface.
Page 86: 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 87: 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 or Low On Charge TXV Fault #1 Evaporator Flooding #2 Evaporator Flooding Refrigeration Fault Curtain Switch Fault - Open more than 12 hours...
Page 88 Event Log Detail Detail Event Log Service Definition Definition E-Log Display Text Error Description 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 89 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 to Two Minutes Fault) into the Freeze cycle.
Page 90 Detail Event Log Service Definition E-Log Display Text Error Description Definition 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 91: 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 92 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 93: Upgrading Firmware With A Flash Drive Or Transferring Setup Data To Multiple Machines
UPGRADING FIRMWARE WITH A FLASH DRIVE OR TRANSFERRING SETUP DATA TO MULTIPLE MACHINES 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 89 USB Flash Drive Specifications and Formatting.
Page 94: Control Board
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 95: 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 96: Safe Operation Mode
SAFE OPERATION MODE Allows the ice machine to operate up to 72 hours if the ice thickness probe (E19 fault) and/or water level probe sensors fail (E20 fault). • When the control board starts the safe mode an alert is flashed on the LCD display to notify the end-user they have a production problem.
Page 97: 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 98: 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 is in place when performing this check.
Page 99: 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 100 Freeze Sequence 3. Prechill The compressor lowers the temperature of the evaporator(s) before the water pump is energized. The water fill valve will energize and remain on until water completes the water level probe circuit. 4. Freeze The water pump(s) energizes and water flows over the evaporator.
Page 101 Automatic Shut-Off 7. Automatic Shut-Off When the storage bin is full at the end of a harvest sequence, the sheet of cubes fails to clear the water curtain/ice damper and will hold it open. After the water curtain/ice damper is held open for 30 seconds, the ice machine shuts off.
Page 102: Energized Parts Chart
Single Evaporator Self Contained Air & Water-Cooled Models Energized Parts Chart 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. Water Purge 2.
Page 103 Single Evaporator Self Contained Air & Water-Cooled Models Energized Parts Chart (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...
Page 104: Remote Condenser
REMOTE CONDENSER Single Evaporator Models 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 105 Harvest Sequence 5. Water Purge The air pump (when used) the harvest valve(s) and harvest pressure regulating valve (HPR) open at the beginning of the water purge 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.
Page 106 Single Evaporator Remote Air-Cooled Condenser Models Energized Parts Chart Harvest Harvest Ice Making Contactor Valve Valve Water Water Length Water Pump Coil Condenser Sequence of (Left) (Right) Inlet Dump Compressor Pump (When Liquid Line Fan Motor of Time (When Valve Valve Used) Solenoid...
Page 107 Single Evaporator Remote Air-Cooled Condenser Models Energized Parts Chart (Continued) Harvest Harvest Ice Making Contactor Valve Valve Water Water Length Water Pump Coil Condenser Sequence of (Left) (Right) Inlet Dump Compressor Pump (When Liquid Line Fan Motor of Time (When Valve Valve Operation...
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Page 109: 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 after three cycles. The number of cycles required to stop the ice machine varies for each safety limit.
Page 110: 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 111: 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 112: Safety Limit #2
Ice thickness probe out of adjustment • Ice thickness probe dirty • 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) •...
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Page 115: 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 116 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 117: Symptom #1 Ice Machine Will Not Run
SYMPTOM #1 ICE MACHINE WILL NOT RUN Start Line voltage at wires Supply power to the 55 & 56 on 9 pin control board Are there any lights on or ice machine connector? flashing on the control board? Replace fuse & determine Control board which component caused fuse is good?
Page 118 Display light Refer to display & control flashing board diagnostics heartbeat? All water curtains or Install the water dampers in place? curtain/damper. Bin switch light on? (Multi evap all lights on?) Replace the water Magnet is on the curtain/damper. water curtain? Refer to display &...
Page 119 Press power button to Refer to display & control start ice making, does safety Ice machine starts? board diagnostics limit light flash? Test run ice machine Refer to Safety Limit #1 Which light flashes? long freeze cycle Refer to Safety Limit #2 long harvest cycle...
Page 120 Diagnosing an Ice Machine That Will Not Run Warning High (line) voltage is applied to the control board (terminals #55 and #56) at all times. Removing control board fuse or pressing the power button will not remove the power supplied to the control board. 1.
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Page 123: Symptom #2 - Self-Contained Air, Water & Remote Condenser Models
SYMPTOM #2 - SELF-CONTAINED AIR, WATER & REMOTE CONDENSER MODELS Symptom #2 Low Production, Long Freeze Ice Machine has a Long Freeze Cycle. Ice Formation is Thick Thin on Top or Bottom of Evaporator Low Production How to Use the Freeze Cycle Refrigeration System Operational Analysis Table GENERAL These tables must be used with charts, checklists and...
Page 124 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 125: Symptom #2 - Freeze Cycle Refrigeration System Operational Analysis Tables
SYMPTOM #2 - FREEZE CYCLE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES SINGLE 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 126 SINGLE EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER Operational Analysis If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem checklist Freeze Cycle page 138 to eliminate problems and/or components not listed on this table before proceeding. Suction Pressure Suction pressure is Suction pressure is...
Page 127 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 is Cool enough to hold freeze cycle. is Cool enough to hold is Cool enough to hold -and-...
Page 128 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 129 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 130 • 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 02/12...
Page 131 Installation/Visual Inspection Checklist Inadequate Clearances • Check all clearances on sides, back and top. Ice machine is not level • Level the ice machine Condenser is dirty • Clean the condenser Water filtration is plugged (if used) • Install a new water filter Water drains are not run separately and/or are not vented •...
Page 132 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 133 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 134 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 135 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 225) for ice machine being checked. Use the operating conditions determined in step 1 to find the published normal discharge pressures.
Page 136 • 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 02/12...
Page 137 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 02/12...
Page 138 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 139 Harvest valve leaking - continue the table • Harvest pressure solenoid valve leaking - continue the table • TXV flooding - continue the table • Defective compressor - continue the table Other • Non-Manitowoc components in system Part Number STH025 02/12...
Page 140 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 132) • Restricted/plugged liquid line drier • Restricted/plugged tubing in suction side of refrigeration system •...
Page 141 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 142 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 143 Findings Comments The inlet of the harvest This is normal as the discharge valve is cool enough to line should always be too hot to touch and the touch and the harvest valve compressor discharge inlet, although too hot to touch line is hot.
Page 144 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 145 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 146 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 147 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 148: Symptom #3 Harvest Problems Self-Contained Air, Water & Remote Con- Denser Models
SYMPTOM #3 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. The slab of ice may or may not be removable by hand.
Page 149: 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 Discharge line temperature is normal Low production, Symptom #2 at the end of the freeze cycle? Normal fill pattern, long Freeze Cycle harvest cycle, Possible SL #2,...
Page 150 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 151: 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 152 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 153: 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 154 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...
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Page 156 This Page Intentionally Left Blank Part Number STH025 02/12...
Page 157: 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 158 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 159 Touch Pad Diagnostics Follow the control board diagnostics to the Status Passed display. 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 160: 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, contactor/compressor/fan motor - The fan cycle control must close to energize the fan motor.
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Page 162: 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 163 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 164: Upgrading Firmware With A Flash Drive Or Transferring Setup Data To Multiple Machines
UPGRADING FIRMWARE WITH A FLASH DRIVE OR TRANSFERRING SETUP DATA TO MULTIPLE MACHINES Important Do not use a flash drive with a built-in software program, such as Sandisk brand. 1. Refer to USB Flashdrive Specifications and Formatting page 161 and prepare the flash drive. 2.
Page 165 11. Follow these on-screen instructions to: A. Insert Drive (Insert the flash drive into the USB port on the ice machine’s control board.) B. Press Check (Press the Checkmark.) C. Wait For Comp (Wait approximately 5 to 10 minutes for the Firmware upgrade to complete.
Page 166: 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 167 8. Highlight Export ALL or Export Setup, depending on your requirements, and press the Checkmark. A display of instructions will appear. 9. Follow these on-screen instructions to: A. Insert Drive (Insert the flash drive into the USB port on the ice machine’s control board.) B.
Page 168: Programming A Replacement Control Board
PROGRAMMING A REPLACEMENT CONTROL BOARD Indigo™ replacement control boards require the Model and Serial 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 169 Manual Setup - Applicable when the control board is non-operational or data from the faulty board is suspect. Install replacement control board and reapply power. Dependant on firmware version the screen will either display “Manual Setup” directly or you will need to navigate to the screen.
Page 170: 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 171: 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 172 Diagnostics SYMPTOMS Bin Switch Fails Open • The ice machine will not start an ice making cycle and the display indicates “Curtain Open”. • The ice machine will run in the clean cycle. Bin Switch Fails Closed • When running a “Long Harvest” alert is displayed and safety limit 2 indicated.
Page 173 3. Disconnect bin switch wire from control board. 4. Jumper control board bin switch wire to ground, press the power button and observe the display and control board lights. A. Curtain switch closes, control board light energizes and ice machine starts - Replace bin switch B.
Page 174: 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 175 Freeze Cycle Operation During the Freeze cycle, the water inlet valve energizes and de-energizes in conjunction with the water level probe located in the water trough. During the first 45 seconds of the Freeze cycle: • The water inlet valve is ON when there is no water in contact with the water level probes.
Page 176 • No is displayed - Control board is not receiving a sensing water signal. Continue with step 5. • Yes is displayed - Control board is receiving a sensing water signal. Clean the water level probe and test run. Step 5 Start a new freeze cycle by pressing the power button.
Page 177 WATER WILL NOT RUN INTO THE SUMP TROUGH DURING THE FREEZE CYCLE 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 178: 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. After ice forms on the evaporator, the ice will contact the ice thickness probe and a harvest cycle is initiated. SPECIFICATIONS Freeze Time Lock-In Feature The ice machine control system incorporates a freeze...
Page 179 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. 1.
Page 180 Diagnostics SYMPTOMS Premature harvest • Display indicates ITP Failure • Low ice production • Thin ice in bin • Freeze cycles are faster than published cycle times Will not harvest • Display indicates ITP Failure • Low ice production • Thick ice in bin •...
Page 181 ICE MACHINE DOES NOT CYCLE INTO HARVEST If ice is on the evaporator initiate a manual harvest cycle by performing the following keystrokes. • Press Menu • Scroll down to Service and press right arrow • Scroll down to Manual Harvest and press right arrow - A new freeze cycle will start after the manual harvest cycle is complete.
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 440 psig ±10 Automatic Reset (3103 kPa ±69 31 bar ±.69) (Must be below 300 psig (2068 kPa 20.68 bar) to reset.) SYMPTOM...
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 indicates “HPC Fault” and an alert triangle 1. Navigate to the event log on the Service menu. Scroll down to HPC Fault #5. 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 Four thermistors are located on the ice machine. They are labeled T1, T2, T3, T4 T1 - Air or Water cooled Models • Liquid line temperature sensor located at the outlet of the condenser. T1 - Remote Condenser or Remote Condensing Unit Models •...
Page 188 Thermistor Matrix Part Number STH025 02/12...
Page 189 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 190: Harvest Assist Air Pump
HARVEST ASSIST AIR PUMP FUNCTION The air pump breaks 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. The air pump is wired in parallel with the harvest valve - Verify the ice machine is in the harvest cycle and the harvest valve is energized.
Page 191: 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 192 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 193: 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 194 Relay The relay has a set of contacts that connect and disconnect the start capacitor from the compressor start winding. The contacts on the relay are normally closed (start capacitor in series with the start winding). The relay senses the voltage generated by the start winding and opens the contacts as the compressor motor starts.
Page 195 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 196 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.
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Page 198: 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 199 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 200 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 201 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 202: 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 203 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 204 3. Freeze time normal? (Refer to Cycle Times/Refrigerant Pressures/24 Hour Ice Production Charts page 225) Shorter freeze cycles - Refer to head pressure control valve diagnostics page 198. Longer freeze cycles - Refer to water system checklist page 132, then refer to Refrigeration Diagnostic Procedures.
Page 205: 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 206: 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 207 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 208 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 209 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 210: 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 02/12...
Page 211 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 212 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 213 ACCESS REMOTE RECOVERY/EVACUATION CONNECTIONS Part Number STH025 02/12...
Page 214 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 215 HEAT EXCHANGER EVAPORATOR 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 216: 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 217 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 218: 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 219 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 220 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 221: 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 222 USING PINCH-OFF TOOL...
Page 223: 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 224: 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 225: 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 226: 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 227 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 228: 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 229 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 230: 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 231 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 232: 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 233 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 234 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 235: 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 236 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 237: 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 238 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 239 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 240: 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 241 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 242 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 243: 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 244 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 245 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 246: 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 247 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 248: 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 249 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 250 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 251: 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 252 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 253 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...
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Page 255: 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 256: I0300/I0450/I0500/I0520
I0300/I0450/I0500/I0520 Self Contained Air & Water-cooled - 1 Ph Part Number STH025 02/12...
Page 257: I0320
I0320 Self Contained Air & Water-cooled - 1 Ph Part Number STH025 02/12...
Page 258: I0500
I0500 Remote Air-cooled - 1Ph Part Number STH025 02/12...
Page 259: I0600/I0850/I1000/I1200
I0600/I0850/I1000/I1200 Self Contained Air & Water-cooled - 1 & 3 Ph Part Number STH025 02/12...
Page 260: I0600/I0850/I1000
I0600/I0850/I1000 Remote Condenser Air-cooled - 1 & 3 Ph Part Number STH025 02/12...
Page 261: I1400/I1800
I1400/I1800 Self Contained Air & Water-cooled - 1 & 3 Ph Part Number STH025 02/12...
Page 262: I1400/I1800
I1400/I1800 Remote Air-cooled - 1 & 3 Ph Part Number STH025 02/12...
Page 263: 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 Transformer Left Bin Switch Light Right Bin Switch Light Water Level Probe Light Display Ice Thickness Probe Light RS485 RT Harvest Bin LED Compressor...
Page 264: 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 265: 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...
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Page 267 This Page Intentionally Left Blank Part Number STH025 02/12...
Page 268 This Page Intentionally Left Blank Part Number STH025 02/12...
Page 270 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 © 2011 Manitowoc Part Number STH025 02/12...

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 27

Maintenance

Cleaning and Sanitizing

Cleaning / Sanitizing Procedure

Removal from Service/Winterization

Operation

Control Panel Features

Menu Navigation Overview

Display Panel

Set-Up Menu

Energy Saver Menu

Service Menu

Operational Checks

Sequence of Operation

Troubleshooting

Safety Limits

Troubleshooting by Symptom

Component Check Procedures

Electrical Components

Refrigeration Components

System Contamination Clean-Up

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

Quick Links

Troubleshooting

Need help?

Questions and answers

Related Manuals for Manitowoc Indigo Series

Summary of Contents for Manitowoc Indigo Series