Manuals / Manitowoc Ice / Kitchen Appliance / Ice Maker

Manitowoc Ice S1800 service manual Step Check

Models: S1800

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Section 6	Electrical System

Diagnosing An Ice Machine That Will Not Run

!Warning

High (line) voltage is applied to the control board (terminals #55 and #56) at all times. Removing control board fuse or moving the toggle switch to OFF will not remove the power supplied to the control board.

Step	Check	Notes
1	Verify primary voltage supply to ice	Verify that the fuse or circuit breaker is closed.
	machine.
2	Verify the high-pressure cutout is closed.	The H.P.C.O. is closed if primary power voltage is present at terminals
		#55 and #56 on the control board.
3	Verify control board fuse is OK.	If the bin switch light functions, the fuse is OK.
4	Verify the bin switch functions properly.	A defective bin switch can falsely indicate a full bin of ice.
5	Verify ICE/OFF/CLEAN toggle switch	A defective toggle switch may keep the ice machine in the OFF mode.
	functions properly.
6	Verify low DC voltage is properly	Loose DC wire connections may intermittently stop the ice machine.
	grounded.
7	Replace the control board.	Be sure Steps 1-6 were followed thoroughly. Intermittent problems are
		not usually related to the control board.

Part Number 80-1634-3

6-27

Image 65

Manitowoc Ice S1800 service manual Step Check

Contents

Service Manual Personal Injury Potential Read These Before Proceeding Table of Contents Section Before Calling For Service Table of Contents Section Ice Machine OperationSection Maintenance Section Refrigeration System Table of Contents Section Electrical System Table of Contents Model Numbers How to Read a Model NumberIce Cube Sizes Self-Contained Water-Cooled General Information Section Accessories Model/Serial Number Location Section General Information Model/Serial Number Location Warranty Coverage Width, Depth, and Height Dimensions Ice Machine DimensionsElectrical and AuCS Dimensions General Ice Machine Heat of Rejection Installation Instructions Section Location of Ice MachineS1800M Water-Cooled Series Heat of Rejection Ice Machine Air Conditioning Voltage Section Installation Instructions Electrical ServiceMinimum Circuit Ampacity Electrical Requirements Self 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 230/1/50 Water Supply Cooling Tower ApplicationsWater Inlet Lines Drain Connections Typical Water Supply Drain Installation Installation Instructions SectionWater Supply and Drain Line SIZING/CONNECTIONS Condenser Section Installation Instructions Installation Check List Potential Personal Injury Situation AuCS Automatic Cleaning System Component Identification Section Ice Machine Operation Initial START-UP or START-UP After Automatic SHUT-OFF Ice Machine Operation Section Sequence Of Operation Harvest Sequence 5. Water Purge Safety TimersHarvest Automatic SHUT-OFF 7. Automatic Shut-Off Water Level Ice Machine Operation Section Operational ChecksICE Thickness Check Ice Thickness Check Harvest Sequence Water Purge Water Purge Adjustment This page Intentionally Left Blank Ice Machine Operation Section Ice Machine Inspection Exterior CleaningWater-Cooled Condenser Water Regulating Valve AlphaSan→ Installation Maintenance Section GuardianSachet Replacement Frequency Sachet Replacement Procedure Cleaning Procedure Section Maintenance Interior Cleaning and SanitizingModel Amount of Cleaner Step Solution Type Water Mixed With Sanitizer Maintenance SectionSanitizing Procedure Solution Type Water Mixed With Removal of Parts for CLEANING/SANITIZING Ice Thickness Probe Removal Water CurtainWater Curtain Removal Ice Thickness Probe Water Distribution Tube Removal Water Distribution TubeWater Trough Water Pump Removal Water Level ProbeWater Pump Water Dump Valve Dump Valve Disassembly Drain Line Check Valve Evaporator Tray Removal Water Inlet Valve SELF-CONTAINED WATER-COOLED ICE Machines Maintenance Section Removal from Service/WinterizationPry Open the Water Regulating Valve AUCS→ Accessory Problem Possible Cause To Correct Checklist Safety Limit Feature Before Calling For Service Section SELF-CONTAINED WATER-COOLED Models Energized Parts ChartsSection Electrical System Initial Start-Up or Start-Up After Automatic Shut-Off SELF-CONTAINED ModelsWater Purge Self-Contained Water Purge Self-Contained Refrigeration System Start-Up Refrigeration System Start Up 5 Seconds Toggle SwitchRefrigeration System START-UP Freeze Sequence Electrical System SectionPRE-CHILL Self-Contained Pre-Chill Self-Contained Models Self-Contained Freeze Self-Contained Models Toggle Switch Bin Switch Control Board RelaysFreeze Harvest Sequence Harvest Self-Contained Automatic Shut-Off Automatic Shut-OffAutomatic SHUT-OFF Wiring Diagram Legend Section Electrical System Wiring Diagrams Control Board S1800 SELF-CONTAINED 1 Phase S1800 SELF-CONTAINED 3 Phase Check Procedure SpecificationsBIN Switch Main Fuse Diagnostic Aids SymptomsContinuity Test Water Curtain Removal Notes Check Resistance Ohm Values Compressor Electrical DiagnosticsCheck Motor Windings to Ground Determine if the Compressor is Seized Compressor Start Sequence Ptcr DiagnosticsWhat is a PTCR? 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 Seconds Manitowoc Ptcr Checking the PtcrModel Manitowoc Cera-Mite Room Part Number Capacitor Diagnosing Start ComponentsRelay Relay Operation Check Switch Setting Terminals Ohm Reading ICE/OFF/CLEAN Toggle Switch Control Board Electronic Control Board Inputs Safety Limits Ice Thickness Probe Cleaning Freeze Time LOCK-IN FeatureHOW the Probe Works Harvest Light Monitoring of Harvest Light Correction Diagnosing ICE Thickness Control Circuitry Electrical System Section Water Level Control Circuitry Water Inlet Valve Safety SHUT-OFFWater Level Probe Light Freeze Cycle Circuitry Wait until the freeze cycle starts Problem Water Trough Overfilling During Freeze CycleDiagnosing Water Level Control Circuitry On or OFF Step Check Self Contained 1 Phase with Terminal Board Freeze Cycle Refrigeration Sequence SELF-CONTAINED Water -COOLED Models Refrigeration System Section S1800 SELF-CONTAINED Tubing Schematic General Weights are in pounds Before Beginning ServiceICE Production Check Times are in minutes Possible Problem Corrective Action INSTALLATION/VISUAL Inspection ChecklistWater System Checklist Normal Ice Formation ICE Formation PatternExtremely Thin at Evaporator Outlet No Ice Formation Extremely Thin at Evaporator Inlet Analyzing Why Safety Limits May Stop the Ice Machine Safety LimitsSafety Limit Indication Possible Cause Check/Correct Safety Limit Notes Section Refrigeration System Freeze Cycle Discharge Pressure High Checklist ProcedureFreeze Cycle Discharge Pressure Low Checklist Analyzing Discharge Pressure During Freeze or Harvest Cycle Analyzing Suction Pressure During Freeze Cycle Step Example Using SY1004A Model Ice Machine Freeze Cycle Suction Pressure Low Checklist Freeze Cycle Suction Pressure High Checklist Findings Comments Harvest Valve Temperature Check GeneralHarvest Valve Analysis Discharge Line Temperature Analysis General Column 1 Harvest Valve Leaking Final AnalysisColumn 2 LOW CHARGE/TXV Starving Column 3 TXV Flooding Models Dual Expansion Valve Ice Machine Model Number Refrigeration System Operational Analysis Tables High Pressure CUT-OUT Hpco Control Self-Contained Water-Cooled Cycle Times S1800 SeriesHour Ice Production Operating Pressures Connections SELF-CONTAINED RECOVERY/EVACUATION Charging Connections Self-Contained Charging Procedures Determining Severity Of Contamination System Contamination CLEAN-UP Severe System Contamination Cleanup Procedure Mild System Contamination Cleanup Procedure Section Refrigeration System 10. Using Pinch-Off Tool Drier End Part Model Connection Size Number FILTER-DRIERS 48 oz Total System Refrigerant ChargesSeries Version Charge S1800M New Product Specifications RecoverRefrigerant Definitions Recycle Refrigerant RE-USE Policy Recovered or Recycled RefrigerantNew Refrigerant Reclaimed Refrigerant HFC Refrigerant Questions and Answers This page Intentionally Left Blank Page Attend a Manitowoc Factory Service School