On or OFF | Manitowoc Ice S1800 guide

Electrical System	Section 6

Problem: Water Will Not Run Into The Sump Trough During The Freeze Cycle

Step 1 Verify water is supplied to the ice machine, and then start a new freeze sequence by moving the ICE/ OFF/CLEAN toggle switch to OFF then back to ICE.

Step 2 Wait until the freeze cycle starts (approximately 45 seconds, the freeze cycle starts when the compressor energizes).

Step 3 Disconnect the water level probe from the water level probe terminal on the control board.

Important

This restart must be done prior to performing diagnostic procedures. This assures the ice machine is not in a freeze cycle water inlet valve safety shut- off mode. You must complete the entire diagnostic procedure within 6 minutes of starting.

Important

For the test to work properly you must wait until the freeze cycle starts, prior to disconnecting the water level probe. If you restart the test you must reconnect the water level probe, restart the ice machine, (step 1) and then disconnect the water level probe after the compressor starts.

GREEN WATER LEVEL LIGHT

DISCONNECT WATER

LEVEL PROBE FROM

CONTROL BOARD

TERMINAL

SV3135

Step 3

Step 3 Disconnect water level probe from control board terminal

	Is water flowing into	The Water Level	The Water Inlet Valve	Cause
	the water trough?	Light is:	Solenoid Coil is:	Cause
	the water trough?	Light is:	Solenoid Coil is:
	YES	OFF	Energized	The water level probe is causing the problem.
	YES	OFF	Energized	Clean or replace the water level probe.
				Clean or replace the water level probe.
	NO	OFF	Energized	The water inlet valve is causing the problem.
	NO	ON OR OFF	De-Energized	The control board is causing the problem.

6-26	Part Number 80-1634-3

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Manitowoc Ice S1800 service manual On or OFF

Contents

Service Manual Read These Before Proceeding Personal Injury Potential Table of Contents Section Maintenance Table of Contents Section Ice Machine OperationSection Before Calling For Service Table of Contents Section Electrical System Section Refrigeration System Table of Contents How to Read a Model Number Model NumbersIce Cube Sizes Self-Contained Water-Cooled General Information Section Accessories Section General Information Model/Serial Number Location Model/Serial Number Location Warranty Coverage Ice Machine Dimensions Width, Depth, and Height DimensionsElectrical and AuCS Dimensions General Installation Instructions Section Location of Ice Machine Ice Machine Heat of RejectionS1800M Water-Cooled Series Heat of Rejection Ice Machine Air Conditioning Section Installation Instructions Electrical Service VoltageMinimum Circuit Ampacity Electrical Requirements For United Kingdom Only Self Contained ICE Machine 115/1/60 or 208-230/1/60Self Contained ICE Machine 208-230/3/60 Self Contained ICE Machine 230/1/50 Cooling Tower Applications Water SupplyWater Inlet Lines Drain Connections Installation Instructions Section Typical Water Supply Drain InstallationWater Supply and Drain Line SIZING/CONNECTIONS Condenser Section Installation Instructions Installation Check List AuCS Automatic Cleaning System Potential Personal Injury Situation Section Ice Machine Operation Component Identification Ice Machine Operation Section Sequence Of Operation Initial START-UP or START-UP After Automatic SHUT-OFF Safety Timers Harvest Sequence 5. Water PurgeHarvest Automatic SHUT-OFF 7. Automatic Shut-Off Ice Machine Operation Section Operational Checks Water LevelICE Thickness Check Ice Thickness Check Water Purge Adjustment Harvest Sequence Water Purge Ice Machine Operation Section This page Intentionally Left Blank Exterior Cleaning Ice Machine InspectionWater-Cooled Condenser Water Regulating Valve AlphaSan→ Maintenance Section Guardian InstallationSachet Replacement Frequency Sachet Replacement Procedure Section Maintenance Interior Cleaning and Sanitizing Cleaning ProcedureModel Amount of Cleaner Step Sanitizing Procedure Maintenance SectionSolution Type Water Mixed With Sanitizer Removal of Parts for CLEANING/SANITIZING Solution Type Water Mixed With Water 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 Dump Valve Disassembly Water Dump Valve Evaporator Tray Removal Drain Line Check Valve Water Inlet Valve Pry Open the Water Regulating Valve AUCS→ Accessory Maintenance Section Removal from Service/WinterizationSELF-CONTAINED WATER-COOLED ICE Machines Checklist Problem Possible Cause To Correct Before Calling For Service Section Safety Limit Feature Section Electrical System Energized Parts ChartsSELF-CONTAINED WATER-COOLED Models SELF-CONTAINED Models Initial Start-Up or Start-Up After Automatic Shut-OffWater Purge Self-Contained Water Purge Refrigeration System START-UP Refrigeration System Start Up 5 Seconds Toggle SwitchSelf-Contained Refrigeration System Start-Up Electrical System Section Freeze SequencePRE-CHILL Self-Contained Pre-Chill Self-Contained Models Freeze 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 Section Electrical System Wiring Diagrams Wiring Diagram Legend S1800 SELF-CONTAINED 1 Phase Control Board S1800 SELF-CONTAINED 3 Phase Specifications Check ProcedureBIN Switch Main Fuse Symptoms Diagnostic AidsContinuity Test Water Curtain Removal Notes Compressor Electrical Diagnostics Check Resistance Ohm ValuesCheck Motor Windings to Ground Determine if the Compressor is Seized What is a PTCR? Ptcr DiagnosticsCompressor Start Sequence Troubleshooting PTCR’s WHY a Good Ptcr MAY Fail To Start the CompressorModel Automatic Shut-Off and Restart During Start-Up First .25 1.0 Seconds Checking the Ptcr Manitowoc PtcrModel Manitowoc Cera-Mite Room Part Number Diagnosing Start Components CapacitorRelay Relay Operation Check ICE/OFF/CLEAN Toggle Switch Switch Setting Terminals Ohm Reading Electronic Control Board Control Board Safety Limits Inputs Freeze Time LOCK-IN Feature Ice Thickness Probe CleaningHOW the Probe Works Harvest Light Diagnosing ICE Thickness Control Circuitry Monitoring of Harvest Light Correction Water Inlet Valve Safety SHUT-OFF Electrical System Section Water Level Control CircuitryWater Level Probe Light Freeze Cycle Circuitry Diagnosing 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 SELF-CONTAINED Water -COOLED Models Freeze Cycle Refrigeration Sequence Refrigeration System Section S1800 SELF-CONTAINED Tubing Schematic General Before Beginning Service Weights are in poundsICE Production Check Times are in minutes Water System Checklist INSTALLATION/VISUAL Inspection ChecklistPossible Problem Corrective Action Extremely Thin at Evaporator Outlet ICE Formation PatternNormal Ice Formation Extremely Thin at Evaporator Inlet No Ice Formation Safety Limit Indication Safety LimitsAnalyzing Why Safety Limits May Stop the Ice Machine Safety Limit Notes Possible Cause Check/Correct Section Refrigeration System Procedure Freeze Cycle Discharge Pressure High ChecklistFreeze Cycle Discharge Pressure Low Checklist Analyzing Discharge Pressure During Freeze or Harvest Cycle Step Example Using SY1004A Model Ice Machine Analyzing Suction Pressure During Freeze Cycle Freeze Cycle Suction Pressure High Checklist Freeze Cycle Suction Pressure Low Checklist Harvest Valve Analysis Harvest Valve Temperature Check GeneralFindings Comments Discharge Line Temperature Analysis General Final Analysis Column 1 Harvest Valve LeakingColumn 2 LOW CHARGE/TXV Starving Column 3 TXV Flooding Refrigeration System Operational Analysis Tables Models Dual Expansion Valve Ice Machine Model Number High Pressure CUT-OUT Hpco Control S1800 Series Self-Contained Water-Cooled Cycle TimesHour Ice Production Operating Pressures SELF-CONTAINED RECOVERY/EVACUATION Connections Self-Contained Charging Procedures Charging Connections System Contamination CLEAN-UP Determining Severity Of Contamination Mild System Contamination Cleanup Procedure Severe System Contamination Cleanup Procedure Section Refrigeration System 10. Using Pinch-Off Tool FILTER-DRIERS Drier End Part Model Connection Size Number Series Version Charge S1800M Total System Refrigerant Charges48 oz Recover New Product SpecificationsRefrigerant Definitions Recycle Recovered or Recycled Refrigerant Refrigerant RE-USE PolicyNew Refrigerant Reclaimed Refrigerant HFC Refrigerant Questions and Answers This page Intentionally Left Blank Page Attend a Manitowoc Factory Service School