Manitowoc Indigo Series Technician's Handbook
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Manitowoc Indigo Series Technician's Handbook

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See also: Technician's Handbook , Installation, Use & Care Manual
Indigo™ Series
QuietQube Ice Machine
Technician's Handbook
Part Number STH026 6/15

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Summary of Contents for Manitowoc Indigo Series

  • Page 1 Indigo™ Series QuietQube Ice Machine Technician’s Handbook Part Number STH026 6/15...

  • 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 types of safety notices: ...
  • 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, or visit our website www.manitowocfsg.com for manual updates, translations and contact information for service agents in your area.
  • 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 have been given supervision concerning use of the appliance by a person responsible for their safety.
  • 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: Read all the instructions before using the appliance. To reduce the risk of injury, close supervision is necessary when an appliance is used near children. Do not contact moving parts.

  • 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 .
  • Page 10 Maintenance Cleaning and Sanitizing ..... . 39 General ........39 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 ......213 I0680C/ICVD0695 ......214 IB0690C/ICVD0695 .

  • Page 15: General Information

    General Information How to Read a Model Number HEAD SECTIONS Part Number STH026 6/15...

  • 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 x 2.22 cm 0.95 x 2.86 x 2.22 cm ...

  • Page 17: Model/Serial Number Location

     Warning All Manitowoc ice machines require the ice storage system (bin, dispenser, etc.) to 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 Section ICVD® Condensing Unit ID0682C - IY0684C ICVD0695 IB0694YC ID0686C - IY0686C ICVD0696 IB0696YC ID0872C - IY0874C ICVD0895 IB0894YC ID0876C - IY0876C ICVD0896 IB0896YC ID0976C - IY0976C ICVD0996 IB1094YC ID1072C - IY1074C ICVD1095 ID1076C - IY1076C ICVD1096 IB1096YC...

  • 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 under...
  • Page 21 The foregoing warranty shall not apply to (1) any part or assembly that has been altered, modified, or changed; (2) any part or assembly that has been subjected to misuse, abuse, neglect, or accidents; (3) any ice machine that has been installed and/or maintained inconsistent with the technical instructions provided by the COMPANY;...

  • Page 22: Residential Ice Machine Warranty

    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 warranty period outlined below under normal use and maintenance, and upon proper installation and start-up in accordance with the instruction manual supplied with the Product.
  • 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 straight time labor...
  • Page 24 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 6/15...
  • Page 26 THIS PAGE INTENTIONALLY LEFT BLANK Part Number STH026 6/15...

  • Page 27: Installation

    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/ICVD0996/ICVD1095/ICVD1096/ICVD1495/ • ICVD1496/ICVD1895/ICVD1896/ICVD2195/ICVD2096 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 I0680C - I0686C I0870C - I0876C ICVD I1070C - I1076C Ice Machine Condensing I1470C - I1476C Head Section Unit I1870C - I1876C I2170C - I2176C 5" (12.7 cm) *0" (0 cm) Sides 5" (12.7 cm) *0" (0 cm) Back 5"...

  • 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. The stock bin deflector must be removed and replaced with the correct deflector to prevent injury.

  • 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 QuietQube® Ice Remote Single Line Set* Machine Circuit Condenser I0670C - I0680C ICVD0695 IB0670C - IB0690C I0870C - I0890C ICVD0895 RC-26 IB0870C - IB0890C RC-36 I0970C ICVD0996 RC-56 I1070C ICVD1095 IB1090C ICVD1195 I1470C ICVD1495 RC-25 I1870C ICVD1895 RC-35 RC-55...

  • 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

    Additional Refrigerant Charge For 51' to 100' Line Sets Additional Amount of Refrigerant To Be Condenser Machine Added To Nameplate Charge I0680C ICVD0695 IB0690C 1.5 lbs I0686C 680 g ICVD0696 IB0696C 4 lbs I0870C ICVD0895 1814 g 2 lbs IB890C ICVD0895 907 g 4 lbs I0976C ICVD0996...

  • Page 39: Cleaning And Sanitizing

    An extremely dirty ice machine must be taken apart for cleaning and sanitizing. Manitowoc Ice Machine Cleaner and Sanitizer are the only products approved for use in Manitowoc ice machines. Part Number STH026 6/15...
  • Page 40  Caution Use only Manitowoc approved Ice Machine Cleaner and Sanitizer for this application (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.

  • Page 41: Cleaning/Sanitizing Procedure

    CLEANING/SANITIZING PROCEDURE This procedure must be performed a minimum of once every six months. • The ice machine and bin must be disassembled cleaned and sanitized. • All ice produced during the cleaning and sanitizing procedures must be discarded. • Removes mineral deposits from areas or surfaces that are in direct contact with water.

  • Page 42: Cleaning / Sanitizing Procedure

    Cleaning / Sanitizing Procedure  Caution Use only Manitowoc approved Ice Machine Cleaner and Sanitizer for this application (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.
  • Page 43 Step 1 Open the front door to access the evaporator compartment. Ice must not be on the evaporator during the clean/sanitize cycle. Follow one of the methods below: • Press the power switch at the end of a harvest cycle after ice falls from the evaporator(s).
  • Page 44 Step 4 Wait until the clean cycle is complete (approximately 24 minutes). Then disconnect power to the ice machine (and dispenser when used).  Warning Disconnect the electric power to the ice machine at the electric service switch box. Step 5 Remove parts for cleaning.

  • Page 45: Sanitizing Procedure

    Step 7 Use 1/2 of the cleaner/water mixture to clean all components. The cleaner solution will foam when it contacts lime scale and mineral deposits; once the foaming stops use a soft-bristle nylon brush, sponge or cloth (NOT a wire brush) to carefully clean the parts. Soak parts for 5 minutes (15 - 20 minutes for heavily scaled parts).
  • Page 46 Step 11 Use 1/2 of the sanitizer/water solution to sanitize all food zone surfaces of the ice machine and bin (or dispenser). Use a spray bottle to liberally apply the solution. When sanitizing, pay particular attention to the following areas: •...
  • Page 47 Step 15 Wait until the water trough refills and the display indicates add solution (approximately 1 minute). Add the proper amount of Manitowoc Ice Machine Sanitizer to the water trough by pouring between the water curtain and evaporator. Model Amount of Sanitizer...

  • Page 48: Parts Removal For Cleaning/Sanitizing

    PARTS REMOVAL FOR CLEANING/SANITIZING 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 49 D. Remove the ice thickness probe • Compress the hinge pin on the top of the ice thickness probe. • Pivot the ice thickness probe to disengage one pin then the other. The ice thickness probe can be cleaned at this point without complete removal. If complete removal is desired, disconnect the ice thickness control wiring from the control board.
  • Page 50 Ice 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 51 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 52 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 53 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 54 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 while disassembling and cleaning water circuit components (soak probes for 10 minutes or longer).
  • Page 55 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 56 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 57 NOTE: During cleaning, do not stretch or damage the spring. 8. Remove the tubing from the dump valve by twisting the clamps off. 9. Remove the valve body, twist off. COIL SPRING PLUNGER NYLON GASKET DIAPHRAM MOUNTING BRACKET VALVE BODY Dump Valve Disassembly Part Number STH026 6/15...
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  • Page 59: Operation

    Operation Power Button Cleaning Button Manitowoc LCD Display Navigation Arrows Menu Checkmark Button Control Panel Features The control panel offers a series of pressure sensitive buttons and a four-line interactive display panel. BUTTONS Power Button: Powers the ice machine when in the On/Off Mode.

  • Page 60: Display Panel

    Menu Button: Accesses main menu structure. Moves the display from the Home Screen, where ice machine status, alerts and messages are viewed, to the Main Menu, where machine information and its event log can be accessed, machine and Energy Saver settings can be adjusted, and service issues can be addressed.

  • Page 61: Menu Navigation Overview

    Menu Navigation Overview Menu Button ON/OFF Button Cleaning Button Timer Initiated Home Screen When When AuCS Clean Clean Alert Message Function Function Present Present Alerts Messages Main Menu Machine Energy Defaults Service Set-up EXIT Info Saver Password Entry Defaults Return to (Optional) Home Screen Exit...

  • Page 62: Display Panel Navigation

    Display Panel Navigation [ L a n g u a g e > ] ▼ T i m e & D a t e > T i m e C o n f i g > U n i t s >...
  • Page 63 Cursor: A cursor (flashing rectangle) is used within lines where actual settings can be adjusted. In these screens, use the Up and Down arrows to make changes to the value underlined. Move the cursor from digit to digit using the Right and Left arrows. Use the Checkmark to move the cursor down one line.

  • Page 64: Alerts And Messages

    Alerts and Messages When messages and alerts exist, they will be highlighted and can be selected with the Left arrow. Alerts displayed will have priority over messages. O f f O n / O f f M o d e For example, if alerts are appearing in the fourth line of the display: 1.

  • Page 65: Main Menu

    Main Menu From the Home screen, press the Menu button to enter the Main menu, where you can choose to see machine information, make setup changes, set the Energy Saver mode, or enter the Service Menu. Machine Info Set-Up Energy Saver Factory Defaults Service Exit...

  • Page 66: Machine Info Menu

    Machine Info Menu From the Main menu, ensure that Machine Info is highlighted and press the Checkmark to view a list including capacity, model number, IMH (Ice Machine Head) serial number, condenser serial number, warranty, installation date, date of manufacture and software version.

  • Page 67: 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 68 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 69: 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. The entire setup can be reset to the factory defaults. 1. From the Set-Up menu, use the Down arrow to highlight Fact Deflts.

  • Page 70: 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 71: 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 72 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 73: 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.

  • Page 74: 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.

  • Page 75: 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 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. 1.

  • 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: 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 84 Part Number STH026 6/15...

  • Page 85: 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 86: 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 87 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 88: 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 89: 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 90: 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.

  • Page 91: 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 92 Part Number STH026 6/15...
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  • Page 95: 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 96 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 97: Upgrading Firmware With A Flash Drive

    UPGRADING FIRMWARE WITH A FLASH DRIVE Important The flash drive must be formatted before using, All files and software on the flash drive are removed during the formatting process. Refer to page 95 USB Flash Drive Specifications and Formatting. 1. Drag and drop the files from website or email onto a flash drive.
  • Page 98 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 99: 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 100 6. Press the Checkmark. USB Stick will appear highlighted.Press the Checkmark again. A submenu with Export ALL and Export Setup appears. NOTE: There are four files stored in ice machine memory: • Asset Data - ASDATAoo.CSV • Operating Data - OPDATAoo.CSV •...

  • Page 101: 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 102: 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 103: Sequence Of Operation

    Sequence of Operation QUIETQUBE® MODELS NOTE: The power button must be depressed and the 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 to purge the ice machine of old water.

  • Page 104: Freeze Sequence

    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 105: Harvest Sequence

    HARVEST SEQUENCE 5. 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 motor...

  • Page 106: Automatic Shut-Off

    AUTOMATIC SHUT-OFF 7. 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 107 Part Number STH026 6/15...
  • Page 108 Part Number STH026 6/15...

  • Page 109: 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”...
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  • 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

    Refrigeration and electrical component failures will cause a safety limit trip. 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: Copy settings to a usb device and flash settings into the control board when diagnostics are complete.
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  • Page 121: Diagnosing A Condensing Unit

    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 228 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

    SYMPTOM #2 LOW PRODUCTION, LONG FREEZE CYCLE Ice Machine has a Long Freeze Cycle. Ice Formation is Thick Thin ice fill at Inlet or Outlet 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 other references to eliminate refrigeration components...
  • 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”...
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  • Page 130: Analysis Tables

    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 6/15...
  • 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 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. Any number of problems can cause improper ice formation.
  • 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 6/15...
  • 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 6/15...
  • 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 6/15...
  • 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 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. The actual temperature of the suction line varies by model, and will change throughout the freeze cycle.
  • 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 Normal Ice Cube Melted Out 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.
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  • Page 155: Component Check Procedures

    Component Check Procedures Electrical Components CONTROL BOARD, DISPLAY BOARD AND TOUCH PAD 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. Micro light flashes - continue with step 3. Micro light is off - Replace control board. 3.
  • 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. White Black Short Probe Ohm water Level Probe and Wiring Harness Part Number STH026 6/15...
  • 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. 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. (3 mm). NOTE: Make sure the water curtain/splash shields 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 black meter lead to the black wire - Normal readings = 1.4 to 2.5 KΩ’s.
  • 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 Model Cut-In (Close) Cut-Out (Open) ICVD0695 250 ±5 200 ±5...

  • 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 6/15...
  • 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 NOTE: Compressor windings can have very low ohm 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. NOTE: The PTCR case temperature may reach 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. 4.

  • 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 Routine adjustments and maintenance procedures 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 Symptoms/Findings Required Cleanup Procedure No symptoms or suspicion of Normal evacuation/ contamination recharging procedure Moisture/Air Contamination Mild contamination symptoms cleanup procedure Refrigeration system open to atmosphere for longer than 15 minutes Refrigeration test kit and/or acid oil test shows contamination Leak in water cooled condenser No burnout deposits in open compressor lines...

  • 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. NOTE: If the contamination is from moisture, use 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: Pull vacuum to 1000 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psig (35 kPa, .35 bar).

  • 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 Model Condensing Refrigerant Line Set Unit Charge Length 12 lbs. 0-50 ft. 5.4 kg 0-15 m IB1090C ICVD1195 14 lbs 51-100 ft. 6.4 kg 15-30 m 12.75 lbs. 0-50 ft. 5.8 kg 0-15 m I1470C ICVD1495 14.75 lbs 51-100 ft. 6.7 kg 15-30 m 12.75 lbs.

  • Page 211: Cycle Times/24-Hour Ice Production/Refrigerant

    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 Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 8.7-10.0 10.8-12.4 12.3-14.1...

  • Page 213: Ib0690C/Icvd0695

    IB0690C/ICVD0695 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 9.4-10.8 10.1-11.6 11.0-12.6...

  • Page 214: I0686C/Icvd0696

    I0686C/ICVD0696 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 9.4-10.9 10.2-11.8 11.1-12.8...

  • Page 215: Ibo696C/Icvd0696

    IBO696C/ICVD0696 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 8.9-10.2 9.5-11.0 10.3-11.9...

  • Page 216: I0870C/Icvd0895

    I0870C/ICVD0895 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 11.0-12.6 12.1-13.8 13.4-15.4...

  • Page 217: Ib0890C/Icvd0895

    IB0890C/ICVD0895 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 8.5-9.8 9.3-10.7 10.0-11.5...

  • Page 218: I0976C/Icvd0996

    I0976C/ICVD0996 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 8.9-10.3 9.4-14.4 10.1-11.6...

  • Page 219: 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 Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 7.9-9.4 9.7-11.5 11.1-13.1...

  • Page 220: I1070C/Icvd1196

    I1070C/ICVD1196 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 8.7-10.3 9.3-11.1 10.4-12.3...

  • Page 221: Ib1090C/Icvd1196

    IB1090C/ICVD1196 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 9.3-10.7 10.1-11.7 11.1-12.7...

  • Page 222: 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 Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 11.5-13.7 12.5-14.8 14.5-17.2...

  • Page 223: I1470C/Icvd1496

    I1470C/ICVD1496 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 11.3-13.4 12.3-14.6 14.2-16.8...

  • Page 224: 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 Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 11.5-12.6 15.5-14.4 14.3-15.6...

  • Page 225: I2170C/Icvd2095

    I2170C/ICVD2095 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ 10.7-11.6 11.7-12.8 12.5-13.7...

  • Page 226: I2176C/Icvd2096

    I2176C/ICVD2096 Remote Air-Cooled Condensing Unit Model Characteristics vary depending on operating conditions. CYCLE TIMES Freeze Time + Harvest Time = Total Cycle Time Air Temp. Freeze Time Entering Water Temperature °F/°C Harvest Condenser Time 50/10 70/21 90/32 °F/°C -20 to 70/ THIS PAGE INTENTIONALLY LEFT BLANK 10.4-11.4 11.4-12.4...

  • Page 227: 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 228: All Icvd Models Interconnecting Wiring

    ALL ICVD MODELS INTERCONNECTING WIRING Part Number STH026 6/15...

  • Page 229: I0670C/I0686C/I0870C/I0976C/I1070C/I1270C

    I0670C/I0686C/I0870C/I0976C/I1070C/I1270C QuietQube® Remote Air-cooled - 1 & 3 Ph Part Number STH026 6/15...

  • Page 230: Ib0690C/Ib0890C/Ib1090C

    IB0690C/IB0890C/IB1090C QuietQube® Remote Air-cooled - 1 & 3 Ph Part Number STH026 6/15...

  • Page 231: I1470C/I1476C/I1870C/I1876C/I2170

    I1470C/I1476C/I1870C/I1876C/I2170 QuietQube® Remote Air-cooled 1 & 3 Ph Part Number STH026 6/15...

  • Page 232: Icvd2095/Icvd2096

    ICVD2095/ICVD2096 QuietQube® Remote Air-cooled 3 Ph Part Number STH026 6/15...

  • Page 233: 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 234: Refrigeration Tubing Schematics

    Refrigeration Tubing Schematics REMOTE CONDENSING UNIT MODELS I0670C/I0686C/I0870C/I0976C/I1070C/I1270C Condensing Unit COMPRESSOR SUCTION ACCESS VALVE LINE FILTER CHECK VALVE CONDENSER ACCUMULATOR S TRAP HEAD PRESSURE REQUIRED CONTROL VALVE 21' OR GREATER RISE SUCTION LIQUID LINE SHUT-OFF SHUT-OFF VALVE VALVE Ice Machine Head Section EVAPORATOR HEAT EXCHANGER T4 Thermistor...

  • Page 235: Ib Models

    IB MODELS IB0690C/IB0696C/IB0890C Condensing Unit COMPRESSOR SUCTION ACCESS VALVE LINE FILTER CHECK VALVE CONDENSER ACCUMULATOR S TRAP HEAD PRESSURE REQUIRED CONTROL VALVE 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 236 IB1090C/IB1096C COMPRESSOR SUCTION ACCESS VALVE LINE FILTER CHECK VALVE CONDENSER ACCUMULATOR S TRAP HEAD PRESSURE REQUIRED CONTROL VALVE 21' OR GREATER RISE Ice Machine Head Section LIQUID LINE SHUT-OFF VALVE EVAPORATOR HARVEST VALVE SUCTION SHUT-OFF VALVE HEAT EXCHANGER LLSV HARVEST VALVE DRIER CHECK VALVE RECEIVER...

  • Page 237: Dual Evaporator Models

    DUAL EVAPORATOR MODELS I1470C/I1476C/I1870C/I1876C/I1876C ACCESS VALVE CHECK VALVE SUCTION LINE 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...
  • Page 238 I2170C/I2176C 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 VALVE Thermistor RECEIVER...
  • Page 240 ©2014 Manitowoc Foodservice except where explicitly stated otherwise. All rights reserved. Continuing product improvement may necessitate change of specifi cations without notice. Part Number STH026 6/15...

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