Page 1 Manitowoc Indigo™ Series QuietQube 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 STH026 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 ! 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 5 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 6 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 7 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 8 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 9: Table Of Contents
Ice Machine Heat of Rejection ..32 I1470C/I1870C/I2170C  Installation on a Manitowoc Bin ..33 Ice Machine on a Dispenser Installation 34 Lineset Applications ....35 QuietQube®...
Page 10 Maintenance Cleaning and Sanitizing ... . . 41 General ......41 Cleaning/Sanitizing Procedure .
Page 11 Energy Saver Menu ....80 Ice Program ..... 81 Water Miser .
Page 12 Troubleshooting Safety Limits ..... . 111 Safe Operation Mode ... . . 112 Analyzing Why a Safety Limit Stopped the Ice Machine .
Page 13 Component Check Procedures Electrical Components ....155 Control Board, Display board and Touch Pad ......155 Control Board Relay Test .
Page 14 Charts Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts ..211 I0680C/ICVD0695 ....212 IB0690C/ICVD695 ....213 I0870C/ICVD895 .
Page 15: General Information
General Information How to Read a Model Number HEAD SECTIONS Part Number STH026 8/12...
Page 16: Icvd Condensing Units
ICVD CONDENSING UNITS AIR-COOLED ICVD 1495 3 CONDENSING CONDENSING UNIT MODEL UNIT SERIES 3 PHASE Ice Cube Sizes Regular Dice Half Dice 1-1/8" x 1-1/8" x 7/8" 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...
Page 17: Model/Serial Number Location
Warning All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) incorporate an ice deflector. Prior to using a non-Manitowoc ice storage system with other Manitowoc ice machines, contact the manufacturer to assure their ice deflector is compatible with Manitowoc ice machines.
Page 18: Model Numbers
Model Numbers QUIETQUBE® MODELS ® Ice Machine Head ICVD Condensing Section Unit ID0682C IY0684C ICVD0695 IB0694YC ID0872C IY0874C ICVD0895 IB0894YC ID1072C ICVD1095 IY1074C IB1094YC ICVD1195 ID1472C ICVD1495 IY1474C ID1872C ICVD1895 IY1874C ID2172C ICVD2095 IY2174C Part Number STH026 8/12...
Page 19: 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 20: 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 21 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 STH026 8/12...
Page 22: Residential Ice Machine Warranty
RESIDENTIAL ICE MACHINE WARRANTY WHAT DOES THIS LIMITED WARRANTY COVER? Subject to the exclusions and limitations below, Manitowoc Ice, Inc. (“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...
Page 23 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 24 (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 25 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 STH026 8/12...
Page 26 This Page Intentionally Left Blank Part Number STH026 8/12...
Page 27: Installation
PERSONAL INJURY POTENTIAL Remove all ice machine panels before lifting. Warning I1470C/I1870C/I2170C ice machines are not approved for use on Manitowoc B570 bins. ! Caution The ice machine head section must be protected if it will be subjected to temperatures below 32°F (0°C).
Page 28: Location Of Ice Machine
Location of Ice Machine HEAD SECTION The location selected for the ice machine head section 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.
Page 29: Ice Beverage Models
ICE BEVERAGE MODELS • Ice/Beverage Ice Machines require that a proper ice level be maintained when installed on a dispenser. Ice Beverage machines ship with a ice level management sensor pre installed. • The ice machine head is installed with the electrical inlet, water supply inlet, refrigeration tubing and water drain entering from the back of the ice machine.
Page 30: Location Of Icvd Condensing Units
LOCATION OF ICVD CONDENSING UNITS The location selected for the ICVD Condensing Unit must meet the following criteria. If any of these criteria are not met, select another location. • ICVD0895/ICVD1095/ICVD1495/ICVD1895/ ICVD2195 Only - The air temperature must be at least -20°F (-28.9°C) but must not exceed 130°F (54.4°C).
Page 31: Clearance Requirements
Clearance Requirements ICVD I0680C - I0870C Ice Machine Condensing I1070C - I2170C Head Section Unit 5" (12.7 cm) *0” (0 cm) Sides 5" (12.7 cm) *0” (0 cm) Back 5" (12.7 cm) 48” (122 cm) Standard Connections Back 3” (7.6 cm) Connections Out Top Front 48”...
Page 32: Ice Machine Heat Of Rejection
Ice Machine Heat of Rejection Heat of Rejection Series Ice Machine Peak Conditioning* I0600 9000 13900 I0850 13000 16000 I1000 16250 18600 I1200 20700 24500 I1400 23500 27000 I1800 30000 35000 I2100 30500 35500 *BTU/Hour Because the heat of rejection varies during the ice making cycle, the figure shown is an average.
Page 33: I1470C/I1870C/I2170C  Installation On A Manitowoc Bin
I1470C/I1870C/I2170C  Installation on a Manitowoc Bin Dual evaporator models will not function correctly with the stock bin deflector. An ice deflector kit is required for installation and is ordered separate. Order appropriate kit (30” or 48”) for your bin.
Page 34: Ice Machine On A Dispenser Installation
Adapters are not included with the ice machine, dispenser or bin and must be ordered separately. When a non- Manitowoc adapter is used, verify the adapter is compatible with Manitowoc Ice/Beverage Ice Machines prior to installation.
Page 35: 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 36: Quietqube® Remote Condensing Unit
QuietQube® Remote Condensing Unit Remote Single QuietQube® Circuit Line Set* Ice Machine Condenser I0670C ICVD0695 IB0670C RC-26 I0870C ICVD0895 RC-36 IB0870C RC-56 I1070C ICVD1095 IB1090C ICVD1195 I1470C ICVD1495 RC-25 RC-35 I1870C ICVD1895 RC-55 I2170C ICVD2095 RC-28 RC-38 RC-58 Minimum Suction Liquid *Line Set Insulation...
Page 37: Icvd Transformer Wiring
(included with Manitowoc line sets) to energize the contactor coil and verify the LPCO & HPCO are closed. This circuit also initiates a time delay whenever the LPCO or HPCO open. Failure to properly wire the iCVD condensing unit or ice machine head section will result in a non-operational machine.
Page 38: 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 I0680C 1.5 lbs I0680C ICVD0695 680 g IB0690C 4 lbs I0870C ICVD0895 1814 g 2 lbs IB890C ICVD0895 907 g 2 lbs I1070C...
Page 39: 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). S trap required at midpoint when Rise 35 FT. (10.7 M) is 21’...
Page 40 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 41: 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 STH026 8/12...
Page 42 (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: 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 44: 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 45 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 46 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 47: 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 48 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 49 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 50: Parts Removal For Cleaning/Sanitizing
PARTS REMOVAL FOR CLEANING/SANITIZING Single Evaporator Ice Machines. 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. •...
Page 51 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 52 Ice Beverage Ice Machines A. Remove splash shield • Grasp the top center of splash shields. • Lift up and then out. B. Remove ice thickness probe • Compress the hinge pin on the top of the ice thickness probe. •...
Page 53 C. Remove the water trough • Depress tabs on right and left side of the water trough. • Allow front of water trough to drop as you pull forward to disengage the rear pins. D. Remove the water level probe •...
Page 54 Dual Evaporator Ice Machines A.Remove front splash shield • Grasp the top of the splash shield. • Lift up and then out. B. Remove evaporator splash shields • Grasp the top center of splash shields. • Lift up and then out. C.
Page 55 D. Remove 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 56 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 57 Water Inlet Valve The water inlet valve normally does not require removal for cleaning. Refer to “Water System Checklist” page 134, 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 58 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 59 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 STH026 8/12...
Page 60 This Page Intentionally Left Blank Part Number STH026 8/12...
Page 61: 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 62: 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 63: 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 Defaults Service Set-up EXIT Info Saver Password Entry Defaults Return to (Optional) Home Screen Exit...
Page 64: 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 65 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 66: 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 67: 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 68: 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 69: 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 70: 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 71 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 72: 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 73: 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 74: 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 75: 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 76: 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 77: 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 78: 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 79: 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 80: 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 81: 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 82: 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 83: 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 84: 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 85 Part Number STH026 8/12...
Page 86: 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 87: 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 88 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 89: 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 90: 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 91: 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 92: 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 93 Event Log Detail Detail Event Log Service Definition E-Log Display Text Error Description Definition Long Freeze 6 consecutive 60 Minute Freeze cycles = shut down and flash the SL#1 light on board Long Freeze 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 94 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 95 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 96: 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 97 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 98: 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 94 USB Flash Drive Specifications and Formatting.
Page 99: 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 100: 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 101 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 102: 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 103: 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 104: Sequence Of Operation
Sequence of Operation QUIETQUBE® 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 Water Purge Before the compressor starts, the water pump and water dump solenoid are energized to purge the ice machine of old water.
Page 105: Freeze Sequence
FREEZE SEQUENCE 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. Freeze The water pump(s) energizes and water flows over the evaporator.
Page 106: Harvest Sequence
HARVEST SEQUENCE Water Purge The air pump(s) and the harvest valve(s) open at the beginning of the water purge to divert refrigerant gas into the evaporator. The water pump continues to run, and the water dump valve energizes to purge the water in the water trough. ICVD Condensing Unit: When the refrigerant pressure is low enough to open the fan cycling pressure control the condenser fan...
Page 107: Automatic Shut-Off
AUTOMATIC SHUT-OFF Automatic Shut-Off Ice Machine Section: Shuts off when: • The storage bin is full at the end of a harvest sequence. • The sheet of cubes fails to clear the water curtain and holds it open. • Ice damper is held down. •...
Page 108 Single & Twin Evaporator QuietQube® Models Energized Parts Chart Contactor Ice Making Refrigeration Length of Water Liquid Line Water Harvest Water Inlet Sequence of Compressor & Air Pumps Dump Solenoid Pump Valve (s) Valve Time Condenser Fan Valve Valve Operation Motor* Start-Up - Initial or After Auto Shut Off...
Page 109 Single & Twin Evaporator QuietQube® Models Energized Parts Chart (Continued) Contactor Ice Making Refrigeration Length of Water Liquid Line Water Harvest Water Inlet Sequence of Compressor & Air Pumps Dump Solenoid Pump Valve (s) Valve Time Condenser Fan Valve Valve Operation Motor* Harvest Sequence...
Page 110: Safety Timers
SAFETY TIMERS The control board has the following non-adjustable safety 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 90 •...
Page 111: 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 112: 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 113: 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 114: 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 115: 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 116: 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 117: 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 118: 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 119 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 120 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 121: Diagnosing A Condensing Unit  That Will Not Run
DIAGNOSING A CONDENSING UNIT  THAT WILL NOT RUN If the ice machine water pump is not energized, refer to “Diagnosing an Ice Machine that Will Not Run. Also see “All ICVD Models Interconnecting wiring” on page 222 1. Verify primary voltage is supplied to ice machine condensing unit and the fuse/circuit breaker is closed.
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 ice fill at 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: Freeze Cycle Refrigeration System Operational Analysis Tables
Freeze Cycle Refrigeration System Operational Analysis Tables I Model QuietQube® Single Expansion Valve Operational Analysis 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 Ice Production production is within 10% of charted capacity.
Page 125 I Model QuietQube® Single Expansion Valve Operational Analysis Safety Limits Refer to “Analyzing Safety Stops on safety limit: Stops on safety limit: Stops on safety limit: Stops on safety limit: Limits” page 113 to eliminate 1 or 2 1 or 2 1 or 2 all non-refrigeration problems.
Page 126 I Model QuietQube® Single Expansion Valve Operational Analysis Suction line temp. at Suction line temp. at Suction line temp. at Suction line temp. at Suction Line Temperature the suction shut-off the suction shut-off the suction shut-off the suction shut-off Attach a temperature probe valve is greater than valve is greater than valve is less than...
Page 127 Freeze Cycle Refrigeration System Operational Analysis Tables Twin Expansion Valve – I1470C/I1870C/I2170C Models Operational Analysis Published 24-hour ice production __________ Calculated (actual) 24-hour ice production __________ NOTE: The ice machine is operating properly if the ice fill pattern is normal Ice Production and ice production is within 10% of charted capacity.
Page 128 Twin Expansion Valve – I1470C/I1870C/I2170C Models Operational Analysis Safety Limits Refer to “Analyzing  Stops on Stops on Stops on Stops on Safety Limits” page 113 to safety limit: safety limit: safety limit: safety limit: 1 or 2 1 or 2 1 or 2 eliminate all non-refrigeration problems.
Page 129 Twin Expansion Valve – I1470C/I1870C/I2170C Models Operational Analysis No audible No audible No audible Audible refrigerant flow refrigerant flow through refrigerant flow through refrigerant flow through through left or right Harvest Valve left or right valve in left or right valve in left or right valve in valve in Freeze cycle Freeze cycle...
Page 130: Quietqube® Models - Freeze Cycle Refrigeration System Operational Analysis Table Procedures
QUIETQUBE® MODELS - FREEZE CYCLE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLE PROCEDURES The following is the procedures for completing each step of the Freeze Cycle Refrigeration System Operational Analysis Tables. Each procedure must be performed exactly for the table to work correctly. Before Beginning Service Ice machines may experience operational problems only during certain times of the day or night.
Page 131 QuietQube® Models - 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 132 • 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 STH026 8/12...
Page 133 QuietQube® Models - Installation/Visual Inspection Checklist Inadequate Clearances • Check all clearances on sides, back and top. See “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 134 QuietQube® Models - 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 135 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 136 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 137 One Evaporator, Two TXV 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 138 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 211) for ice machine being checked. Use the operating conditions determined in step 1 to find the published normal discharge pressures.
Page 139 Defective fan cycling control (page 180) • Defective fan motor • Defective head pressure control valve {Remote} Other • Overcharged • Non-condensable (air) in system • Wrong type of refrigerant • Non-Manitowoc components in system • High side refrigerant lines/component restricted Part Number STH026 8/12...
Page 140 • Defective head pressure control valve, won’t bypass (page 190) • Defective fan cycle control, stuck closed (page 180) Other • Undercharged • Wrong type of refrigerant • Non-Manitowoc components in system • Liquid line/component restricted Part Number STH026 8/12...
Page 141 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 142 Overcharged (also see “Freeze Cycle Discharge Pressure High Checklist” page 139) • Wrong type of refrigerant • Non condensable in system Components • Harvest valve leaking • TXV flooding • Defective compressor Other • Non-Manitowoc components in system Part Number STH026 8/12...
Page 143 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 134) • Restricted/plugged liquid line drier • Restricted/plugged tubing in suction side of refrigeration system •...
Page 144 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 145 QuietQube® Models - Analyzing Freeze Cycle Suction Line Temperature Suction line temperature alone cannot diagnose an ice machine. However, comparing this temperature during the freeze cycle, along with using Manitowoc’s Symptom #2 - Refrigeration System Operational Analysis Table, can help diagnose an ice machine malfunction.
Page 146 QuietQube® Model Final Analysis 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
SYMPTOM #3 HARVEST PROBLEMS Melted Out Ice Cube Normal Ice Cube Definition of a harvest problem; At the end of a 3.5 minute harvest cycle (7 minutes dual evaporators) the slab(s) of ice is still contacting the evaporator. The slab of ice may or may not be removable by hand.
Page 149: Symptom #3 Quietqube® Models With Icvd Condensing Units
SYMPTOM #3 QUIETQUBE® MODELS WITH ICVD CONDENSING UNITS ICE MACHINE WILL NOT HARVEST - FREEZE CYCLE NORMAL, CUBES ARE NOT MELTED Ice Machine Will Not Harvest - Freeze Cycle Is Normal and Ice Cubes Are Not Melted Afte Ice Machine Will Not Harvest - Freeze Cycle Is Normal and Ice Cubes Are Not Melted After Harvest START Refer to Sequence of Operation Is the Harvest Valve(s)
Page 150 Replace Is Head Pressure high & Harvest Suction Pressure low Valve in harvest? Is Head Pressure low & Not a refrigeration problem, No; Harvest PSI Normal Suction Pressure low in harvest? Clean & Inspect Evaporator Feel temperature of Receiver after 30 seconds Feels Warm to Hot into harvest cycle Cold...
Page 151 Cold Feel temperature of Liquid Line Backseat Liquid Line Shut Feels Hot at rear of Head Section Off Valve or Replace Cold Look for Restriction, Feel temperature of Liquid Line Feels Hot Correct Line Set Size, at Condensing Unit & Proper Insulation Cold Does the Condenser Fan Motor Refer to Fan Cycling...
Page 152 IMPORTANT Feel temperature of Discharge Line Headmaster is not Weigh charge as you are recovering, after 30 seconds into Harvest Cycle in 100% Bypass if incorrect evacuate & recharge, (refer to Harvest Headmaster Diagnostics) if correct then proceed Refrigerant Charge Refrigerant Charge is Correct is Incorrect...
Page 153: Symptom #4 Quietqube® Models With Icvd Condensing Units
SYMPTOM #4 QUIETQUBE® MODELS WITH ICVD CONDENSING UNITS Ice Machine Will Not Harvest - Freeze Cycle Is Normal and Ice Cubes Are Melted After Harvest START Level Ice Back of cubes are melted Is Ice Machine level? at end of harvest cycle? Machine Refer to Is water flow over the evaporator...
Page 154 Is the evaporator dirty or damaged? (Dry evaporator first then check) Refer to Symptom #2 Refer to Cleaning Freeze Cycle Operational Procedures Analysis Table...
Page 155: 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 156 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 157 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 158: 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 159: Programming A Replacement Board
PROGRAMMING A REPLACEMENT 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 160 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 161: 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 162: 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 163 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 164 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 165: 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 166 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 167 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 168 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 STH026 8/12...
Page 169 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 170 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 171: Ice Thickness Probe
ICE THICKNESS PROBE 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 172 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 173 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 174 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 175 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 176: 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 177 CHECK PROCEDURE Symptom #1 Machine is off and the display indicates “Delay xx min, HPCO Active”. 1. Cycle ice machine with the on/off button.The ice machine will go to an initial start sequence if the HPCO is closed. If the HPCO is open, another 60 minute delay period starts.
Page 178 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 179: Low Pressure Cutout (Lpco) Control
LOW PRESSURE CUTOUT (LPCO) CONTROL FUNCTION Signals the control board to energize and de-energize the contactor when suction pressure rises above or falls below setpoint. The LPCO control is closed at pressures above setpoint and opens at pressures below setpoint. Specifications Cut-Out Cut-In...
Page 180: 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) ICVD0695 ICVD0895 ICVD1095...
Page 181: 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 182 Thermistor Matrix Part Number STH026 8/12...
Page 183 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 184: 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 185: 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 186 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 187: 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 188 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 189 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 190: 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 191 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 192 Diagnostics FREEZE CYCLE - QUIETQUBE® REMOTE CONDENSING UNIT 1. Determine if the coil is clean. 2. Determine the air temperature entering the condenser. 3. Determine if the head pressure is high or low in relationship to the outside temperature. (Refer to the proper “Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts”...
Page 193 Harvest Cycle QUIETQUBE ® REMOTE CONDENSING UNIT QuietQube® ice machines may fail in the harvest cycle when the refrigerant charge and ambient temperature create a marginal undercharge of refrigerant. The ice machine may be able to make a full sheet of ice, but fails in the harvest cycle when the receiver runs out of liquid refrigerant.
Page 194 HARVEST CYCLE DIAGNOSTICS QUIETQUBE ® REMOTE CONDENSING UNIT The headmaster control valve diverts the compressor discharge gas to the ice machine receiver in the harvest cycle. All refrigerant flow through the condenser in the harvest cycle stops. Symptoms of a headmaster valve that will not seat 100% closed (completely bypass the condenser) in the harvest cycle are:...
Page 195 Step 3 Details Grasp Here with Hands to Compare Temperatures LIQUID LINE FROM CONDENSER HARVEST CYCLE HEADMASTER CONTROL VALVE FAILURE LIST Temperature of the compressor discharge line and liquid line to the ice machine receiver feel the same 30 seconds into the harvest cycle. •...
Page 196: Suction Accumulator Operation
SUCTION ACCUMULATOR OPERATION Liquid refrigerant collects in the suction accumulator during the harvest cycle and is removed during the freeze cycle. The liquid refrigerant is returned to the compressor through a screen and orifice in the suction accumulator J tube. Passing the liquid through the orifice causes a pressure drop;...
Page 197: Recovery/Evacuation/Charging Procedures Quietqube® Models
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. Warning Recovery/evacuation of a QuietQube remote ®...
Page 198: Connections
CONNECTIONS Manifold gauge sets must utilize low loss fittings to comply with U.S. Government rules and regulations. Make these connections: Ice Machine Head Section - All Models 1. Suction side of the compressor through the suction shut-off valve or suction access valve. 2.
Page 199: Recovery/Evacuation Procedures
RECOVERY/EVACUATION PROCEDURES 1. Press the power button to stop the ice machine. and disconnect all power to the ice machine and condensing unit. 2. Install manifold gauges, charging scale, and recovery unit or two-stage vacuum pump. 3. Open high and low side on the manifold gauge set.
Page 200: Charging Procedures
CHARGING PROCEDURES 1. The ice machine must be off. 2. Close the vacuum pump valve and the low side manifold gauge valve. 3. Open the refrigerant cylinder and add the proper refrigerant charge (shown on nameplate) into the system high side (receiver service valve and discharge line shut-off valve).
Page 201: 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 202 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 203: 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 204 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 205 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 206: 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 207 USING PINCH-OFF TOOL 3. Cut the tubing of the defective component with a small tubing cutter. 4. Solder the replacement component in place. Allow the solder joint to cool. 5. Remove the pinch-off tool. 6. Re-round the tubing. Position the flattened tubing in the proper hole in the pinch-off tool.
Page 208: Liquid Line Filter-Driers
LIQUID LINE FILTER-DRIERS The filter-driers used on Manitowoc ice machines are manufactured to Manitowoc specifications. A Manitowoc drier has dirt-retaining filtration, with fiberglass filters on both the inlet and outlet ends. This is very important because ice machines have a back- flushing action that takes place during every Harvest cycle.
Page 209: 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. QuietQube®...
Page 210 This Page Intentionally Left Blank Part Number STH026 8/12...
Page 211: 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 212: I0680C/Icvd0695
I0680C/ICVD0695 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C...
Page 213: Ib0690C/Icvd695
IB0690C/ICVD695 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C...
Page 214: I0870C/Icvd895
I0870C/ICVD895 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 -20 to 70/ 11.0-12.6 12.1-13.8 13.4-15.4...
Page 215: Ib0890C/Icvd895
IB0890C/ICVD895 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C 50/10 70/21 90/32 -20 to 70/ 8.5-9.8 9.3-10.7 10.0-11.5...
Page 216: I1070C/Icvd1095
I1070C/ICVD1095 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C...
Page 217: Ib1090C/Icvd1195
IB1090C/ICVD1195 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C...
Page 218: I1470C/Icvd1495
I1470C/ICVD1495 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C...
Page 219: I1870C/Icvd1895
I1870C/ICVD1895 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C...
Page 220: I2170C/Icvd2195
I2170C/ICVD2195 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Freeze Time + Harvest Time = Cycle Time Air Temp. Freeze Time Entering Harvest Water Temperature °F/°C Condenser Time °F/°C...
Page 221: 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 222: All Icvd Models Interconnecting Wiring
ALL ICVD MODELS INTERCONNECTING WIRING Part Number STH026 8/12...
Page 223: I0670C/I0870C/I1070C/I1270C
I0670C/I0870C/I1070C/I1270C QuietQube® Remote Air-cooled - 1 & 3 Ph Part Number STH026 8/12...
Page 224: Ib0690C/Ib0890C/Ib1090C
IB0690C/IB0890C/IB1090C QuietQube® Remote Air-cooled - 1 & 3 Ph Part Number STH026 8/12...
Page 225: Ii1400/I1800/I2170
II1400/I1800/I2170 QuietQube® Remote Air-cooled 1 & 3 Ph Part Number STH026 8/12...
Page 226: Icvd2095
ICVD2095 QuietQube® Remote Air-cooled 3 Ph Part Number STH026 8/12...
Page 227: 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 228: Refrigeration Tubing Schematics
Refrigeration Tubing Schematics REMOTE CONDENSING UNIT MODELS I0670C/I0870C/I1070C/I1270C Condensing Unit COMPRESSOR SUCTION ACCESS VALVE LINE FILTER CHECK VALVE CONDENSER ACCUMULATOR HEAD PRESSURE CONTROL VALVE S TRAP REQUIRED 21’ OR GREATER RISE LIQUID LINE SUCTION SHUT-OFF SHUT-OFF VALVE VALVE Ice Machine Head Section EVAPORATOR HEAT EXCHANGER T4 Thermistor...
Page 229: Ib Models
IB MODELS IB0690C/IB0890C Condensing Unit COMPRESSOR SUCTION ACCESS VALVE LINE FILTER CHECK VALVE CONDENSER ACCUMULATOR HEAD PRESSURE CONTROL VALVE S TRAP REQUIRED 21’ OR GREATER RISE LIQUID LINE SUCTION SHUT-OFF SHUT-OFF VALVE VALVE Ice Machine Head Section EVAPORATOR HEAT EXCHANGER T4 Thermistor Thermistor LLSV...
Page 230 IB1090C SUCTION COMPRESSOR ACCESS VALVE LINE FILTER CHECK VALVE CONDENSER ACCUMULATOR HEAD PRESSURE CONTROL VALVE S TRAP REQUIRED 21’ OR GREATER RISE Ice Machine Head Section LIQUID LINE SHUT-OFF VALVE EVAPORATOR HARVEST VALVE SUCTION SHUT-OFF VALVE HEAT EXCHANGER LLSV DRIER HARVEST VALVE CHECK VALVE RECEIVER...
Page 231: Dual Evaporator Models
DUAL EVAPORATOR MODELS I1470C/I1870C ACCESS VALVE CHECK VALVE SUCTION FILTER CONDENSER ACCUMULATOR COMPRESSOR HEAD PRESSURE CONTROL VALVE S Trap Required 21’ or Greater Rise SUCTION LIQUID LINE SHUT-OFF SHUT-OFF VALVE VALVE T4 Thermistor Thermistor HEAT EXCHANGER EVAPORATOR EVAPORATOR LLSV HARVEST HARVEST VALVE VALVE...
Page 232: I2170C
I2170C SUCTION COMPRESSOR FILTER CONDENSER ACCUMULATOR HEAD PRESSURE CONTROL VALVE S Trap Required 21’ or Greater Rise SUCTION LIQUID LINE SHUT-OFF SHUT-OFF VALVE VALVE T4 Thermistor Thermistor HEAT EXCHANGER EVAPORATOR EVAPORATOR LLSV HARVEST HARVEST VALVE VALVE DRIER CHECK VALVE RECEIVER ACCESS Thermistor VALVE RECEIVER...
Page 233 This Page Intentionally Left Blank Part Number STH026 8/12...
Page 234 Part Number STH026 8/12...
Page 236 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 STH026 8/12...

Manitowoc QuietQube Indigo Series Technician's Handbook

General Information

How to Read a Model Number

ICVD Condensing Units

Ice Cube Sizes

Model/Serial Number Location

Model Numbers

Ice Machine Warranty Information

Ice Machine on a Dispenser Installation 34

Installation on a Manitowoc bin

Stacking Two Ice Machines on a  Single Storage bin

Installation

Maintenance

Cleaning and Sanitizing

Cleaning / Sanitizing Procedure

Operation

Control Panel Features

Menu Navigation Overview

Machine Info Menu

Main Menu

Energy Saver Menu

Service Menu

Troubleshooting

Safety Limits

Troubleshooting by Symptom

Component Check Procedures

Electrical Components

Diagnosing Start Components

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

Wiring Diagrams

Quick Links

Troubleshooting

Need help?

Questions and answers

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Summary of Contents for Manitowoc QuietQube Indigo Series