Manitowoc Ice S1800 service manual Checklist, Problem Possible Cause To Correct

Page 37

Section 5

Before Calling For Service

 

 

Section 5

Before Calling For Service

Checklist

If a problem arises during operation of your ice machine, follow the checklist below before calling service. Routine adjustments and maintenance procedures are not covered by the warranty.

Problem

Possible Cause

To Correct

Ice machine does not operate.

No electrical power to the ice machine

Replace the fuse/reset the breaker/turn

 

and/or condensing unit.

on the main switch.

 

High pressure cutout tripping.

Clean condenser coil. (See Section 4)

 

ICE/OFF/CLEAN toggle switch set

Move the toggle switch to the ICE

 

improperly.

position.

 

Water curtain stuck open.

Water curtain must be installed and

 

 

swinging freely. (See Section 4)

Ice machine stops, and can be restarted

Safety limit feature stopping the ice

Refer to “Safety Limit Feature” on the

by moving the toggle switch to OFF and

machine.

next page.

back to ICE.

 

 

Ice machine does not release ice or is

Ice machine is dirty.

Clean and sanitize the ice machine.

slow to harvest.

 

(See Section 4)

 

Ice machine is not level.

Level the ice machine. (See Section 2)

 

Low air temperature around ice machine

Air temperature must be at least 35°F

 

head section.

(1.6°C).

Ice machine does not cycle into harvest

The six-minute freeze time lock-in has

Wait for the freeze lock-in to expire.

mode.

not expired yet.

 

 

Ice thickness probe is dirty.

Clean and sanitize the ice machine.

 

 

(See Section 4)

 

Ice thickness probe is disconnected.

Connect the wire.

 

Ice thickness probe is out of adjustment.

Adjust the ice thickness probe.

 

 

(See Section 3)

 

Uneven ice fill (thin at the top of

Verify sufficient water level in sump

 

evaporator).

trough. Contact a qualified service

 

 

company to check refrigeration system.

Ice quality is poor (soft or not clear).

Poor incoming water quality.

Contact a qualified service company to

 

 

test the quality of the incoming water and

 

 

make appropriate filter

 

 

recommendations.

 

Water filtration is poor.

Replace the filter.

 

Ice machine is dirty.

Clean and sanitize the ice machine.

 

 

(See Section 4)

 

Water dump valve is not working.

Disassemble and clean the water dump

 

 

valve. (See Section 4)

 

Water softener is working improperly (if

Repair the water softener.

 

applicable).

 

Part Number 80-1634-3

5-1

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Contents Service Manual Personal Injury Potential Read These Before ProceedingTable of Contents Section Maintenance Table of Contents Section Ice Machine OperationSection Before Calling For Service Section Refrigeration System Table of Contents Section Electrical SystemTable of Contents Model Numbers How to Read a Model NumberIce Cube Sizes Self-Contained Water-CooledGeneral Information Section Accessories Model/Serial Number Location Section General Information Model/Serial Number LocationWarranty Coverage Width, Depth, and Height Dimensions Ice Machine DimensionsElectrical and AuCS Dimensions GeneralIce Machine Heat of Rejection Installation Instructions Section Location of Ice MachineS1800M Water-Cooled Series Heat of Rejection Ice Machine Air ConditioningVoltage Section Installation Instructions Electrical ServiceMinimum Circuit Ampacity Electrical RequirementsSelf Contained ICE Machine 115/1/60 or 208-230/1/60 For United Kingdom OnlySelf Contained ICE Machine 208-230/3/60 Self Contained ICE Machine 230/1/50Water Supply Cooling Tower ApplicationsWater Inlet Lines Drain ConnectionsTypical Water Supply Drain Installation Installation Instructions SectionWater Supply and Drain Line SIZING/CONNECTIONS CondenserSection Installation Instructions Installation Check List Potential Personal Injury Situation AuCS Automatic Cleaning SystemComponent Identification Section Ice Machine OperationInitial START-UP or START-UP After Automatic SHUT-OFF Ice Machine Operation Section Sequence Of OperationHarvest Sequence 5. Water Purge Safety TimersHarvest Automatic SHUT-OFF 7. Automatic Shut-OffWater Level Ice Machine Operation Section Operational ChecksICE Thickness Check Ice Thickness CheckHarvest Sequence Water Purge Water Purge AdjustmentThis page Intentionally Left Blank Ice Machine Operation SectionIce Machine Inspection Exterior CleaningWater-Cooled Condenser Water Regulating Valve AlphaSan→Installation Maintenance Section GuardianSachet Replacement Frequency Sachet Replacement ProcedureCleaning Procedure Section Maintenance Interior Cleaning and SanitizingModel Amount of Cleaner StepSanitizing Procedure Maintenance SectionSolution Type Water Mixed With Sanitizer Solution Type Water Mixed With Removal of Parts for CLEANING/SANITIZINGWater Curtain Removal Ice Thickness Probe Water CurtainIce Thickness Probe Removal Water Trough Water Distribution TubeWater Distribution Tube Removal Water Pump Water Level ProbeWater Pump Removal Water Dump Valve Dump Valve Disassembly Drain Line Check Valve Evaporator Tray RemovalWater Inlet Valve Pry Open the Water Regulating Valve AUCS→ Accessory Maintenance Section Removal from Service/WinterizationSELF-CONTAINED WATER-COOLED ICE Machines Problem Possible Cause To Correct ChecklistSafety Limit Feature Before Calling For Service SectionSection Electrical System Energized Parts ChartsSELF-CONTAINED WATER-COOLED Models Initial Start-Up or Start-Up After Automatic Shut-Off SELF-CONTAINED ModelsWater Purge Self-Contained Water PurgeRefrigeration System START-UP Refrigeration System Start Up 5 Seconds Toggle SwitchSelf-Contained Refrigeration System Start-Up Freeze Sequence Electrical System SectionPRE-CHILL Self-Contained Pre-Chill Self-Contained ModelsFreeze Toggle Switch Bin Switch Control Board RelaysSelf-Contained Freeze Self-Contained Models Harvest Sequence Harvest Automatic SHUT-OFF Automatic Shut-OffSelf-Contained Automatic Shut-Off Wiring Diagram Legend Section Electrical System Wiring DiagramsControl Board S1800 SELF-CONTAINED 1 PhaseS1800 SELF-CONTAINED 3 Phase Check Procedure SpecificationsBIN Switch Main FuseDiagnostic Aids SymptomsContinuity Test Water Curtain Removal NotesCheck Resistance Ohm Values Compressor Electrical DiagnosticsCheck Motor Windings to Ground Determine if the Compressor is SeizedWhat is a PTCR? Ptcr DiagnosticsCompressor Start Sequence WHY a Good Ptcr MAY Fail To Start the Compressor Troubleshooting PTCR’sModel Automatic Shut-Off and Restart During Start-Up First .25 1.0 SecondsManitowoc Ptcr Checking the PtcrModel Manitowoc Cera-Mite Room Part NumberCapacitor Diagnosing Start ComponentsRelay Relay Operation CheckSwitch Setting Terminals Ohm Reading ICE/OFF/CLEAN Toggle SwitchControl Board Electronic Control BoardInputs Safety LimitsIce Thickness Probe Cleaning Freeze Time LOCK-IN FeatureHOW the Probe Works Harvest LightMonitoring of Harvest Light Correction Diagnosing ICE Thickness Control CircuitryElectrical System Section Water Level Control Circuitry Water Inlet Valve Safety SHUT-OFFWater Level Probe Light Freeze Cycle CircuitryDiagnosing Water Level Control Circuitry Problem Water Trough Overfilling During Freeze CycleWait until the freeze cycle starts On or OFF Step Check Self Contained 1 Phase with Terminal Board Freeze Cycle Refrigeration Sequence SELF-CONTAINED Water -COOLED ModelsRefrigeration System Section S1800 SELF-CONTAINED Tubing Schematic General Weights are in pounds Before Beginning ServiceICE Production Check Times are in minutesWater System Checklist INSTALLATION/VISUAL Inspection ChecklistPossible Problem Corrective Action Extremely Thin at Evaporator Outlet ICE Formation PatternNormal Ice Formation No Ice Formation Extremely Thin at Evaporator InletSafety Limit Indication Safety LimitsAnalyzing Why Safety Limits May Stop the Ice Machine Possible Cause Check/Correct Safety Limit NotesSection Refrigeration System Freeze Cycle Discharge Pressure High Checklist ProcedureFreeze Cycle Discharge Pressure Low Checklist Analyzing Discharge Pressure During Freeze or Harvest CycleAnalyzing Suction Pressure During Freeze Cycle Step Example Using SY1004A Model Ice MachineFreeze Cycle Suction Pressure Low Checklist Freeze Cycle Suction Pressure High ChecklistHarvest Valve Analysis Harvest Valve Temperature Check GeneralFindings Comments Discharge Line Temperature Analysis General Column 1 Harvest Valve Leaking Final AnalysisColumn 2 LOW CHARGE/TXV Starving Column 3 TXV FloodingModels Dual Expansion Valve Ice Machine Model Number Refrigeration System Operational Analysis TablesHigh Pressure CUT-OUT Hpco Control Self-Contained Water-Cooled Cycle Times S1800 SeriesHour Ice Production Operating PressuresConnections SELF-CONTAINED RECOVERY/EVACUATIONCharging Connections Self-Contained Charging ProceduresDetermining Severity Of Contamination System Contamination CLEAN-UPSevere System Contamination Cleanup Procedure Mild System Contamination Cleanup ProcedureSection Refrigeration System 10. Using Pinch-Off Tool Drier End Part Model Connection Size Number FILTER-DRIERSSeries Version Charge S1800M Total System Refrigerant Charges48 oz New Product Specifications RecoverRefrigerant Definitions RecycleRefrigerant RE-USE Policy Recovered or Recycled RefrigerantNew Refrigerant Reclaimed RefrigerantHFC Refrigerant Questions and Answers This page Intentionally Left Blank Page Attend a Manitowoc Factory Service School
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