Manitowoc CVD1375 Specifications

Technician’s HandbookManitowoc This manual is updated as new information and models are released. Visit our website for the latest manual. www.manitow

Cycle Times/24-Hour Ice Production/Refrigerant Pressure ChartsQ0600C/CVD675 Series Remote Air Cooled... 177Q0800C/CVD875 Series Remote Air Cooled...

–96–BIN SWITCHFunctionMovement of the water curtain controls bin switch operation. The bin switch has two main functions:1. Terminating the Harvest cy

–97–Check Procedure1. Set the toggle switch to OFF.2. Watch the bin switch light on the control board.3. Move the water curtain toward the evaporator.

–98–Water Curtain Removal NotesThe water curtain must be on (bin switch closed) to start ice making. While a Freeze cycle is in progress, the water cu

–99–ICE/OFF/CLEAN TOGGLE SWITCHFunctionThe switch is used to place the ice machine in ICE, OFF or CLEAN mode of operation.SpecificationsDouble-pole, d

–100–ICE THICKNESS PROBE (HARVEST INITIATION)How the Probe WorksManitowoc’s electronic sensing circuit does not rely on refrigerant pressure, evaporat

–101–Ice Thickness Probe DiagnosticsBefore diagnosing ice thickness control circuitry clean the ice thickness probe using the following procedure.1. M

–102–Diagnosing Ice Thickness Control CircuitryICE MACHINE DOES NOT CYCLE INTO HARVEST WHEN WATER CONTACTS THE ICE THICKNESS CONTROL PROBEStep 1. Bypa

–103–Step 3. Disconnect the ice thickness probe from the control board at terminal 1C. Clip the jumper wire leads to terminal 1C on the control board

–104–ICE MACHINE CYCLES INTO HARVEST BEFORE WATER CONTACT WITH THE ICE THICKNESS PROBEStep 1. Disconnect the ice thickness probe from the control boar

–105–WATER LEVEL CONTROL CIRCUITRYQ0600C/Q0800C/Q1000C/QDUAL OnlyThe water level probe circuit can be monitored by watching the water level light. The

–1–Model NumbersThis manual covers the following models:Ice Machine HeadSectionCVD® Condensing Unit*QR0670CQD0672CQY0674CCVD0675QR0870CQD0872CQY0874CC

–106–FREEZE CYCLE CIRCUITRYManitowoc’s electronic sensing circuit does not rely on float switches or timers to maintain consistent water level control

–107–DIAGNOSING WATER LEVEL CONTROL CIRCUITRYQ0600C/Q0800C/Q1000C/QDUAL OnlyProblem: Water Trough Overfilling During the Freeze CycleStep 1. Start a n

–108–Step 2. Jumper Wire Connected from Probe to GroundIs WaterFlowinginto theWaterTrough?TheWaterLevelLight Is:The WaterInlet ValveSolenoidCoil Is:Ca

–109–Step 3. Allow ice machine to run. Disconnect the water level probe from control board terminal 1F, and connect a jumper wire from terminal 1F to

–110–Problem: Water Will Not Run into the Sump Trough During the Freeze CycleQ0600C/Q0800C/Q1000C/QDUAL OnlyStep 1. Verify water is supplied to the ic

–111–Step 3. Leave the ice machine run, and then disconnect the water level probe from control board terminal 1F.ImportantFor the test to work properl

–112–DIAGNOSING AN ICE MACHINE HEAD SECTION THAT WILL NOT RUNIf the water pump is energized but no ice is produced, refer to “Diagnosing a Condensing

–113–DIAGNOSING A CONDENSING UNIT THAT WILL NOT RUNIf the ice machine water pump is not energized, refer to “Diagnosing an Ice Machine Head Section t

–114–COMPRESSOR ELECTRICAL DIAGNOSTICSThe compressor does not start or will trip repeatedly on overload.Check Resistance (Ohm) ValuesNOTE: Compressor

–115–CHECK MOTOR WINDINGS TO GROUNDCheck continuity between all three terminals and the compressor shell or copper refrigeration line. Scrape metal su

–2–MODEL/SERIAL NUMBER LOCATIONThese numbers are required when requesting information from your local Manitowoc Distributor, service representative, o

–116–DIAGNOSING START COMPONENTSIf the compressor attempts to start, or hums and trips the overload protector, check the start components before repla

–117–ELECTRICAL DIAGRAMSIce Machine Head Section Q0600C/Q0800C/Q1000C115V/60Hz/1Ph or 230V/50Hz/1Ph(Diagram Shown in Freeze Cycle)SEE SERIAL PLATE FOR

–118–SU1000C115V/60Hz/1Ph or 230V/50Hz/1Ph (Diagram Shown in Freeze Cycle)SEE SERIAL PLATE FOR VOLTAGEL1GROUNDICE THICKNESS P

–119–Q1400C115V/60Hz/1Ph or 230V/50Hz/1Ph(Diagram Shown in Freeze Cycle)GROUNDL1L2 (N)ICE THICKNESS PROBERESISTORBIN SWITCH (LEFT)BIN SWITCH(RIGHT)1C1

–120–QDUALC115V/60Hz/1Ph or 230V/50Hz/1Ph(Diagram Shown in Freeze Cycle)L1ICE THICKNESS PROBEWATER LEVEL PROBE21345(19)N(75)(20)(24)(22)(97)ICE(55)(23

–121–Condensing UnitCVD0675/CVD0875/CVD1075/CVD1475/CVD1476/CVD1875/CVD2075208-230V/60Hz/1Ph or 230V/50Hz/1Ph(Diagram Shown in Freeze Cycle)GROUNDL1(9

–122–CVD0675/CVD0875/CVD1075/CVD1475/CVD1476/CVD1875/CVD2075208-230V/60Hz/3Ph(Diagram Shown in Freeze Cycle)GROUNDCOMPRESSORCRANKCASEHEATERFAN MOTORCO

–123–Refrigeration SystemREFRIGERATION SYSTEM DIAGNOSTICSGeneral Verify the water and electrical systems are functioning properly before diagnosing th

–124–vapor refrigerant leaves the evaporator and passes through the heat exchanger absorbing additional heat from the liquid line. The suction vapor r

–125–SUCTION ACCUMULATOR OPERATIONLiquid refrigerant collects in the suction accumulator during the harvest cycle and is removed during the freeze cyc

–3–Ice Machine Warranty InformationOWNER WARRANTY REGISTRATION CARDWarranty coverage begins the day the ice machine is installed.If the OWNER WARRANTY

–126–REFRIGERANT CHARGERefrigerant charge on QuietQube ice machines is very important. Overcharged or undercharged machines will normally fail in the

–127–ICE MACHINE WILL NOT HARVEST DIAGNOSTICSIce relaease issues fall into two main categories mechanical or refrigeration. The first step in solving

–128–ICE PRODUCTION CHECKThe amount of ice a machine produces directly relates to the operating water and air temperatures. This means a condensing un

–129–1. Compare the results of step 3 with step 2. Ice production is normal when these numbers match closely. If they match closely, determine if: An

–130–Water System ChecklistA water-related problem often causes the same symptoms as a refrigeration system component malfunction.Example: A water dum

–131–Ice Formation PatternEvaporator ice formation pattern analysis is helpful in ice machine diagnostics.Analyzing the ice formation pattern alone ca

–132–Ice Formation Patterns1. Normal Ice FormationIce forms across the entire evaporator surface.At the beginning of the Freeze cycle, it may appear t

–133–4. Spotty Ice FormationThere are small sections on the evaporator where there is no ice formation. This could be a single corner or a single spot

–134–Safety LimitsGENERALIn addition to standard safety controls, such as the high-pressure cutout, the control board has two built-in safety limit co

–135–Safety Limit #2: If the harvest time reaches 3.5 minutes, the control board automatically returns the ice machine to the Freeze cycle. Control bo

–4–WARRANTY COVERAGEGeneralThe following Warranty outline is provided for your convenience. For a detailed explanation, read the warranty bond shipped

–136–SAFETY LIMIT INDICATIONControl Board with Black MicroprocessorWhen a safety limit condition causes the ice machine to stop, the harvest light on

–137–When a safety limit condition is exceeded (6 consecutive cycles for safety limit #1 or 500 cycles for safety limit #2) the ice machine stops, and

–138–Safety Limit #1Refer to page 134 for description.Possible Cause Checklist Improper Installation Refer to “Installation/Visual Inspection Checkli

–139–Safety Limit #2Refer to page 134 for description.Possible Cause ChecklistImproper Installation Refer to “Installation/Visual Inspection Checklis

–140–ANALYZING DISCHARGE PRESSURE 1. Determine the ice machine operating conditions:Air temp. entering condenser ______Air temp. around ice machine __

–141–Discharge Pressure High ChecklistProblem CauseImproper Installation Refer to “Installation/Visual Inspection Checklist” Condenser Restriction

–142–Freeze Cycle Discharge Pressure Low ChecklistProblem CauseImproper Installation Refer to “Installation/Visual Inspection Checklist” Improper Re

–143–ProcedureStepExample Using Q1000C Model Ice Machine1. Determine the ice machine operating conditions.Air temp. entering condenser:90°F/32.2°CAir

–144–Suction Pressure High ChecklistProblem CauseImproper Installation Refer to “Installation/Visual Inspection Checklist” Discharge Pressure Disch

–145–Suction Pressure Low ChecklistProblem CauseImproper Installation Refer to “Installation/Visual Inspection Checklist” Discharge Pressure Discha

–5–3. Damage caused by improper installation of the ice machine, electrical supply, water supply or drainage, or damage caused by floods, storms, or o

–146–COOL VAPOR VALVEThe cool vapor valve is an electrically operated valve that opens when energized, and closes when de-energized. Normal OperationT

–147–Cool Vapor Valve AnalysisThe valve can fail in two positions: Valve will not open in the Harvest cycle. Valve remains open during the Freeze cy

–148–Freeze Cycle Suction Line Temperature AnalysisSuction line temperature alone cannot diagnose an ice machine. However, comparing this temperature

–149–THIS PAGE INTENTIONALLY LEFT BLANK

–150–REFRIGERATION COMPONENT DIAGNOSTIC CHARTSGeneralAll electrical and water-related problems must be corrected before these charts will work proper

–151–Column 1 – Cool Vapor Valve LeakingA leaking cool vapor valve must be replaced.Column 2 – Low Charge/TXV StarvingNormally, a starving expansion

–152–REFRIGERATION COMPONENT DIAGNOSTIC CHARTSSingle Expansion Valve – Q0600C/0800C/Q1000C/SU1000C Operational Analysis 1 2 3 4Ice Production Publishe

–153–Safety LimitsRefer to “Analyzing Safety Limits” to eliminate all non-refrigeration problems.Stops on safety limit:1 or 2Stops on safety limit:1 o

–154–Cool Vapor ValveAudible refrigerant flow through valve in Freeze cycleNo audible refrigerant flow through valve in Freeze cycleNo audible refrige

–157–Dual Expansion Valve – Q1400C/QDUAL Operational Analysis 1 2 3 4Ice ProductionPublished 24-hour ice production __________Calculated (actual) 24-h

–6–InstallationLOCATION OF ICE MACHINEThe location selected for the ice machine head section must meet the following criteria. If any of these criteri

–158–Safety LimitsRefer to “Analyzing Safety Limits” to eliminate all non-refrigeration problems.Stops on safety limit:1 or 2Stops on safety limit:1 o

–159–Cool Vapor ValveAudible refrigerant flow through left or right valve in Freeze cycleNo audible refrigerant flow through left or right valve in Fr

–160–PRESSURE CONTROL SPECIFICATIONS AND DIAGNOSTICSHeadmaster Control ValveFUNCTIONThe headmaster control valve maintains the correct discharge pres

–161–HARVEST CYCLE OPERATIONDuring the Harvest cycle, the cool vapor valve opens and allows refrigerant from the top of the receiver tank to enter the

–162–DIAGNOSING AIR-COOLED CONDENSING UNITSFreeze Cycle1. Determine the air temperature entering the remote condenser.2. Determine if the head pressur

–163–FREEZE CYCLE HEADMASTER CONTROL VALVE FAILURE LISTCVD0875/CVD1075/CVD1475/CVD1875/CVD2075Valve not maintaining pressures Non-approved valve. Ins

–164–DIAGNOSING AIR-COOLED CONDENSING UNITSHarvest CycleThe headmaster control valve diverts the compressor discharge gas to the ice machine receiver

–165–HARVEST CYCLE HEADMASTER CONTROL VALVE FAILURE LISTCVD675/CVD0875/CVD1075/CVD1475/CVD1476/CVD1875/CVD2075Temperature of the compressor discharge

–166–DIAGNOSING WATER-COOLED CONDENSING UNIT HEADMASTER VALVEFreeze CycleThe water regulating valve maintains the freeze cycle discharge pressure. Ref

–167–HEADMASTER CONTROL VALVE FAILURE LISTCVD1476Freeze CycleValve not maintaining discharge pressure. The water regulating valve maintains the free

–7–STACKING TWO ICE MACHINES ON A SINGLE STORAGE BINQ0600C/Q0800C/Q1000C Ice Machines:A stacking kit is required for stacking two ice machines. Inst

–168–REFRIGERANT CHARGE VERIFICATIONQuietQube remote ice machines require the correct amount of refrigerant (name plate charge) to operate correctly a

–169–Overcharge Symptoms Safety limit #2 in control board memory. Harvest cycle suction pressure is low. Harvest cycle discharge pressure is normal

–170–Water Regulating ValveFunctionThe water regulating valve maintains the freeze cycle discharge pressure. The valve setting for the CVD1476 conden

–171–Fan Cycle ControlCVD0875/CVD1075/CVD1475/CVD1875/CVD2075FUNCTIONEnergizes and de-energizes the condenser fan motor. The condenser fan motor typic

–172–High Pressure Cutout (HPCO) ControlFUNCTIONStops the ice machine if subjected to excessive high-side pressure.The HPCO control is normally closed

–173–Low Pressure Cutout (LPCO) ControlFUNCTIONEnergizes and de-energizes the contactor coil when suction pressure rises above or falls below setpoint

–174–QUIETQUBE® TUBING SCHEMATICS Q0600C/Q0800C/Q1000CRECEIVERRECEIVERSERVICEVALVELLSVSUCTIONSHUT-OFFVALVEHEAT EXCHANGERCHECK VALVEHEAD PRESSURECONTRO

–175–Q1400C/QDUALCCOMPRESSORLIQUID LINESHUT-OFFVALVECVD1476 ONLYWaterRegulatingValveLLSVEVAPORATORHEAT EXCHANGERCONDENSERSUCTIONFILTERCHECK VALVERECEI

–176–Cycle Times/24-Hour Ice Production/Refrigerant Pressure ChartsThese charts are used as guidelines to verify correct ice machine operation. Accura

–177–Q0600C/CVD675 SERIES REMOTE AIR COOLEDNOTE: These characteristics may vary depending on operating conditions.CYCLE TIMES24-HOUR ICE PRODUCTIONOPE

–8–LOCATION OF CVD® CONDENSING UNITThe location selected for the CVD® Condensing Unit must meet the following criteria. If any of these criteria are n

–178–Q0800C/CVD875 SERIES REMOTE AIR COOLEDNOTE: These characteristics may vary depending on operating conditions.CYCLE TIMES24-HOUR ICE PRODUCTIONOPE

–179–Q1000C/CVD1075 SERIES REMOTE AIR COOLEDNOTE: These characteristics may vary depending on operating conditions.CYCLE TIMES24-HOUR ICE PRODUCTIONOP

–180–SU1000C/SERVEND UC-300 DISPENSER/CVD1075 REMOTE AIR COOLEDNOTE: These characteristics may vary depending on operating conditions.CYCLE TIMES24-HO

–181–Q1400C/CVD1475 SERIES REMOTE AIR COOLEDNOTE: These characteristics may vary depending on operating conditions.CYCLE TIMES24-HOUR ICE PRODUCTIONOP

–182–Q1400C/CVD1476 REMOTE WATER COOLEDNOTE: These characteristics may vary depending on operating conditions.CYCLE TIMES24-HOUR ICE PRODUCTIONOPERATI

–183–QDUAL/CVD1875 REMOTE AIR COOLEDNOTE: These characteristics may vary depending on operating conditions.CYCLE TIMES24-HOUR ICE PRODUCTIONOPERATING

–184–QDUAL/CVD2075 REMOTE AIR COOLEDNOTE: A Scroll compressor must be operated for a minimum break-in period of 72 hours before full ice production wi

–185–Refrigerant Recovery/EvacuationDo not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manufacturer’

–186–RECOVERY/EVACUATION PROCEDURES1. Place the ICE/OFF/CLEAN toggle switch in the OFF position and disconnect all power to the ice machine and conden

–187–CHARGING PROCEDURES1. Verify the ICE/OFF/CLEAN toggle switch is in the OFF position.2. Close the vacuum pump valve and the low side manifold gaug

–9–ICE MACHINE HEAD SECTION WATER SUPPLY AND DRAINS Potable Water SupplyLocal water conditions may require treatment of the water to inhibit scale fo

–188–SYSTEM CONTAMINATION CLEANUPGeneralThis section describes the basic requirements for restoring contaminated systems to reliable service.Determini

–189–Contamination Cleanup ChartSymptoms/FindingsRequired Cleanup ProcedureNo symptoms or suspicion of contaminationNormal evacuation/recharging proc

–190–Cleanup ProcedureMILD SYSTEM CONTAMINATION1. Replace any failed components.2. If the compressor is good, change the oil.3. Replace the liquid lin

–191–SEVERE SYSTEM CONTAMINATION1. Remove the refrigerant charge.2. Remove the compressor.3. Cut copper tubing at the outlet of the cool vapor valve.

–192–9. Follow the normal evacuation procedure, except replace the evacuation step with the following:A. Pull vacuum to 1000 microns. Break the vacuum

–193–REPLACING PRESSURE CONTROLS WITHOUT REMOVING REFRIGERANT CHARGEThis procedure reduces repair time and cost. Use it when any of the following comp

–194–NOTE: The pressure controls will operate normally once the tubing is re-rounded. Tubing may not re-round 100%.SV1406FIG. A - “PINCHING OFF” TUBIN

–195–FILTER-DRIERSLiquid Line Filter-DrierThe filter-driers used on Manitowoc ice machines are manufactured to Manitowoc specifications.The difference

–196–Suction Line FilterThe suction filter traps particulate only and does not contain a desiccant. The filter needs replacement when:1. The pressure

–197–TOTAL SYSTEM REFRIGERANT CHARGENOTE: All ice machines on this list are charged using R-404A refrigerant.Total charge listed is for line set lengt

–10–Drain ConnectionsFollow these guidelines when installing drain lines to prevent drain water from flowing back into the ice machine and storage bin

–198–REFRIGERANT OILManitowoc QuietQube ice machines use POE oil.The recommended lubricant is Mobil EAL22A. Refrigeration systems exposed to atmospher

–199–REFRIGERANT DEFINITIONSRECOVERTo remove refrigerant, in any condition, from a system and store it in an external container, without necessarily t

–200–REFRIGERANT REUSE POLICYManitowoc recognizes and supports the need for proper handling, reuse, and disposal of CFC and HCFC refrigerants. Manitow

MANITOWOC ICE2110 South 26th Street P.O. Box 1720Manitowoc, WI 54221-1720 USAPhone: 920-682-0161 Fax: 920-683-7585Website – www.manitowocice.com©2003

–11–WATER COOLED CONDENSER WATER SUPPLY AND DRAINSCondenser Water SupplyLocal water conditions may require treatment of the water to inhibit scale fo

–12–Condensing Unit Drain ConnectionsThe condensing unit drain is provided to remove any condensate produced by the suction accumulator. Condensate am

–13–ELECTRICAL REQUIREMENTSQuietQube® Ice Machines and CVD® Condensing Units3 Phase Scroll Compressor RotationCVD2075 3 PHASE ONLYA trained and quali

–14–CVD® Condensing UnitVoltagePhaseCycleMax. Fuse/CircuitBreakerMin.CircuitAmpsCVD0675208-230/1/60208-230/3/60230/1/5015 amp15 amp15 amp 9.6 7.3 9.0C

–15–REFRIGERATION SYSTEM INSTALLATIONUsage With Non-Manitowoc Condensing UnitsManitowoc CVD® Condensing Units are specifically designed for usage with

–16–Factory Equipment Refrigerant AmountsICE MACHINE HEAD SECTIONQ0600C/Q0800C/Q1000C/SU1000C/Q1400CEach ice machine head section ships from the fact

–17–Refrigeration Line Set InstallationRefrigeration line set installation consists of vertical and horizontal line set distances between the ice mach

–18–B. LINE SET RISE OR DROP35 ft. (10.7 m) Rise: The maximum distance the CVD® Condensing Unit can be above the ice machine.15 ft. (4.5 m) Drop: The

–19–C. SUCTION LINE OIL TRAPS0 to 20 ft. (0 to 6.1 m) Rise: The ice machine head section has one oil trap built in which allows for a maximum condens

Safety NoticesAs you work on Manitowoc equipment, be sure to pay close attention to the safety notices in this handbook. Disregarding the notices may

–20–SERVICE LOOPA service loop in the line set permits easy access to the ice machine for cleaning and service. The supplied service loop is an insta

–21–Step 3. When the line set requires shortening or lengthening, do so before connecting the line set to the ice machine head section or the CVD® Con

–22–CONNECT THE LINE SET TO THE CVD® CONDENSING UNITThe compressor oil rapidly absorbs moisture. Be prepared to complete line set installation and sta

–23–Step 5. Schrader valve core removal tools that allow for removal and installation of the valve cores without removing manifold gauge set hoses are

–24–If required, the line set and condensing unit can be evacuated from the schrader valves located in the CVD® Condensing Unit. Schrader valve core r

–25–Step 6. The suction line, liquid line and receiver service valves are closed during shipment and installation.Open the valves prior to starting th

–26–Verify O-rings in schrader valve caps are intact and reinstall on shut-off valves to prevent refrigerant leakage. Replace shut-off valve access ca

–27–pressures to equalize. Place the ICE/OFF/CLEAN toggle switch in the OFF position. Connect power to the CVD® Condensing Unit and allow system to pu

–28–SUCTION SHUT-OFF VALVE INSULATIONThe preformed suction shut-off valve insulation is located in the plastic bag taped to the water curtain.A. Verif

–29–3 PHASE SCROLL COMPRESSOR ROTATION CVD2075 ONLYA trained and qualified technician must verify compressor rotation at equipment startup or compress

NOTE: Text set off as a Note provides you with simple, but useful, extra information about the procedure you are performing.Read These Before Proceedi

–30–Operational Checks GENERALYour Manitowoc ice machine was factory-operated and adjusted before shipment. Normally, a newly installed ice machine do

–31– Q1400C/SU1000C1. Check the water level while the ice machine is in the Clean mode and the water pump is running. The correct water level above th

–32–ICE THICKNESS CHECKAfter a Harvest cycle, inspect the ice cubes in the ice storage bin. The ice thickness probe is set to maintain an ice bridge o

–33–HARVEST SEQUENCE WATER PURGEQ0600C/Q0800C/Q1000C/SU1000C/QDUALThe Harvest sequence water purge adjustment may only be used when the ice machine is

–34–Interior Cleaning and SanitizingNOTE: Clean and sanitize the ice machine every six months for efficient operation. If the ice machine requires mor

–35–Manitowoc’s Patented Cleaning or Sanitizing TechnologyManitowoc ice machines include technology that allows the initiation and completion of a cle

–36–ALPHASAN The goal of AlphaSan is to keep the plastic surfaces of an ice machine cleaner, by reducing or delaying the formation of biofilm. The

–37–CLEANING PROCEDUREIce machine cleaner is used to remove lime scale or other mineral deposits. It is not used to remove algae or slime. Refer to “S

–38–Step 5. The ice machine will automatically time out a ten-minute cleaning cycle, followed by six Rinse cycles, and then stop. The Clean light* wil

–39–SANITIZING PROCEDUREUse sanitizer to remove algae or slime. Do not use it to remove lime scale or other mineral deposits. To initiate a sanitizing

Table of ContentsModel NumbersModel/Serial Number Location... 2Ice Machine Warranty InformationOwner Warranty Registration

–40–Step 5. The ice machine will automatically time out a ten-minute sanitizing cycle, followed by six Rinse cycles, and then stop. The Clean light* w

–41–Automatic Cleaning System (AuCS®) AccessoryThis accessory monitors ice-making cycles and initiates cleaning (or sanitizing) procedures automatical

–42–MANUAL START OPERATIONStep 1. Set the toggle switch to the OFF position after ice falls from the evaporator at the end of a Harvest cycle. Or, set

–43–Removal of Parts for Cleaning or Sanitizing1. Turn off the water supply to the ice machine at the water service valve.2. Remove the water curtain

–44–5. Use the solution and a brush to clean the top, sides, and bottom evaporator extrusions; the inside of the ice machine panels; and the entire in

–45–WATER DUMP VALVEThe water dump valve normally does not require removal for cleaning. To determine if removal is necessary:1. Locate the water dump

–46–NOTE: During cleaning, do not stretch, damage or remove the spring from the plunger. If it is removed, slide the spring’s flared end into the plun

–47–WATER PUMP1. Disconnect the water pump power cord.2. Disconnect the hose from the pump outlet.3. Loosen the screws securing the pump, mounting bra

–48–ICE THICKNESS PROBE1. Compress the side of the ice thickness probe near the top hinge pin and remove it from the bracket.NOTE: At this point, the

–49–WATER LEVEL PROBEQ0600C/Q0800C/Q1000C/QDUAL 1. Loosen the screw that holds the water level probe in place. The probe can easily be cleaned at this

Electrical Requirements... 13QuietQube® Ice Machines and CVD® Condensing Units... 13

–50–SPLASH SHIELDQ1400C/QDUAL1. Pull forward on left and right Nylatch connectors until disengaged from ice machine (connectors remain attached to spl

–51–WATER CURTAIN1. Gently flex the curtain in the center and remove it from the right side.2. Slide the left pin out.SV1213WATER CURTAIN REMOVAL

–52–FLOAT VALVESU1000C/Q1400C 1. Turn off the water supply to the ice machine at the water service valve.2. Turn the splash shield counterclockwise on

–53–WATER INLET VALVEQ0600C/Q0800C/Q1000C/QDUALThe water inlet valve normally does not require removal for cleaning. Follow the instructions below to

–54–Follow the procedure below to remove the water inlet valve.1. Remove the valve shield if necessary.2. Remove the filter access screws that hold th

–55–WATER DISTRIBUTION TUBE1. Disconnect the water hose from the distribution tube.2. Loosen the thumbscrews, which secure the distribution tube.3. Li

–56–4. Disassemble for cleaning. A. Twist both of the inner tube ends until the tabs line up with the keyways.B. Pull the inner tube ends outward.SV12

–57–WATER TROUGH REMOVALQ1400C/QDUAL1. Remove the front splash shield, water pump and float valve from the ice machine.2. Remove the quarter turn fast

–58–WATER TROUGH REMOVALSU1000C (SerVend UC-300 Dispenser)1. Remove the quarter turn fasteners (turn counterclockwise) securing the trough in place.2.

–63–Removal from Service/WinterizationGENERALSpecial precautions must be taken if the ice machine is to be removed from service for an extended period

Component IdentificationIce Machine Head Section ... 65Q0600C/Q0800C/Q1000C ... 65SU1000C/Ser

–64–CVD1476 WATER COOLED CONDENSING UNITPlace the ice machine toggle switch into the OFF position.1. "Front seat" (shut off) the receiver se

–65–Component IdentificationICE MACHINE HEAD SECTIONQ0600C/Q0800C/Q1000CSV1754WATER INLET VALVELIQUID LINESOLENOID VALVEWATER DUMP VALVEDRAIN HOSELIQU

–66–Q0600C/Q0800C/Q1000CSV1605AFLOW CLAMP USED ON REGULAR SIZE CUBE ONLYDISTRIBUTION TUBEICE THICKNESS PROBEEVAPORATORWATER CURTAINWATER TROUGHWATER P

–67–SU1000C/SerVend UC-300 DispenserIce Thickness ProbeElectrical Compartment & Toggle SwitchDump ValveWater TroughWater CurtainWater Pump/Float V

–68–Q1400C ICE/OFF/CLEAN SWITCHSV1770LHICE THICKNESS PROBECOOL VAPOR VALVEFLOAT VALVE WATER INLET SUCTION LINE SHUT-OFF VALVESV1770RHLIQUID LINE SHUT-

–69–QDUALDISTRIBUTION TUBESV1780EVAPORATOR WATER PUMPWATER CURTAINWATER TROUGH

–70–CVD® CONDENSING UNITCVD0675/CVD0875/CVD1075/CVD1475ACCESS VALVECONDENSER FAN MOTORHEAD PRESSURECONTROL VALVE AIR CONDENSER COMPRESSORSUCTIONACCUMU

–71–CVD1476LIQUID LINE ANDSUCTION LINECONNECTION POINTSSUCTIONACCUMULATORCOMPRESSORWATER COOLED CONDENSER HEAD PRESSURECONTROL VALVE ELECTRICAL COMPAR

–72–CVD1875/CVD2075ACCESS VALVESCVD1875 SHOWNCONDENSER FAN MOTORAIR CONDENSER HEAD PRESSURE CONTROL VALVE COMPRESSORSUCTIONACCUMULATORLIQUID LINE ANDS

–73–Ice Making Sequence of Operation Q0600C/Q0800C/Q1000C/SU1000CInitial Start-Up or Start-Up After Automatic Shut-Off1. Water PurgeBefore the compre

Electrical SystemComponent Specifications and Diagnostics Control Board... 91Harvest/S

–74–Freeze Sequence3. PrechillThe compressor is on for 30 seconds prior to water flow to prechill the evaporator. The water fill valve remains on unti

–75–Harvest Sequence5. Water PurgeThe water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the sump tr

–76–Automatic Shut-Off7. Automatic Shut-OffIce Machine Section: When the storage bin is full at the end of a Harvest sequence, the sheet of ice cubes

–77–Q600C/Q800C/Q1000C/SU1000C Energized Parts ChartIce MakingSequence ofOperationControl Board Relays Condensing UnitLengthof Time1WaterPump2WaterFil

–78–Harvest Sequence5. Water PurgeOn30 Sec.Off,15 Sec.OnOn On OnClosedOnCVD675OnAll others May CycleOn/OffFactorySet at 45 Seconds6. Harvest Off Off O

–79–Q1400CInitial Start-Up or Start-Up After Automatic Shut-Off1. Water PurgeBefore the refrigeration system starts, the water pump and water dump sol

–80–Harvest Sequence4. Water PurgeThe water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the sump tr

–81–Energized Parts Chart – Model Q1400C Ice MakingSequence ofOperationControl Board Relays Condensing UnitLengthof Time1WaterPump2CoolVapor ValveRigh

–82–3. Freeze On Off Off Off On Closed **OnUnit 7 Sec.Water Contactw/Ice ThicknessProbeHarvest Sequence4. Water PurgeOn On On On On Closed **OnFactory

–83–*Low Pressure Control (close on pressure increase).**CVD1375/CVD1475 ONLY - The fan motor is wired through a fan cycle pressure control, therefore

Refrigeration SystemRefrigeration System Diagnostics ... 123General... 123Refr

–84–QDUALInitial Start-Up or Start-Up After Automatic Shut-Off1. Water PurgeBefore the refrigeration system starts, the water pump and water dump sole

–85–Freeze Sequence3. PrechillThe liquid line solenoid is energized for 30 seconds prior to water flow. This allows the refrigeration system to start

–86–Harvest Sequence5. Water PurgeThe water pump continues to run, and the water dump valve energizes for 45 seconds to purge the water in the sump tr

6A. Water Assist Harvest FeatureTypical duration of a Harvest sequence is less than 2.5 minutes. When the Harvest sequence time reaches 4 minutes, the

–88–Energized Parts Chart – Model QDUAL Ice MakingSequence ofOperationControl Board Relays Condensing UnitLengthof Time1WaterPump2WaterFillSolenoid3Du

–89–Freeze Sequence3. PrechillOffOn Until Wateris SensedOff On Off Off Closed **On30 Seconds4. Freeze OnCyclesOffThen On 1 MoreTimeOff On Off Off Clo

–90–*Low pressure Control (close on pressure increase).**The fan motor is wired through a fan cycle pressure control, therefore, it may cycle on and o

–91–Electrical SystemCOMPONENT SPECIFICATIONS AND DIAGNOSTICS CONTROL BOARDAll QuietQube® control boards incorporate the following features. Refer to

–92–Three-Minute DelayThe three-minute delay is initiated whenever the ice machine cycles off (automatic shut-off) on a full bin.The delay period star

–95–MAIN FUSEFunctionThe control board fuse stops ice machine operation if electrical components fail, causing high amp draw.SpecificationsThe main fu