Water Inlet Valve | Manitowoc Ice S1800 manual

Section 4	Maintenance

Water Inlet Valve

The water inlet valve normally does not require removal for cleaning. Refer to Section 5 for a list of causes for “No Water Entering Water Trough” or “Water Overflows Water Trough.

1.When the ice machine is off, the water inlet valve must completely stop water flow into the machine.

2.When the ice machine is on, the water inlet valve must allow the proper water flow through it. Set the toggle switch to ON. Watch for water flow into the ice machine. If the water flow is slow or only trickles into the ice machine, refer to Section 5.

Follow the procedure below to remove the water inlet valve.

!Warning

Disconnect the electric power to the ice machine and dispenser at the electric service switch box and turn off the water supply before proceeding.

1.Remove the 1/4” hex head screws.

2.Remove, clean, and install the filter screen.

FILTER

ACCESS

SCREWS

WATER

INLET

VALVE

SV1622

Part Number 80-1634-3

4-11

Image 35

Manitowoc Ice S1800 service manual Water Inlet Valve

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 Self-Contained Water-Cooled How to Read a Model NumberModel Numbers Ice Cube Sizes General Information Section Accessories Model/Serial Number Location Section General Information Model/Serial Number Location Warranty Coverage General Ice Machine DimensionsWidth, Depth, and Height Dimensions Electrical and AuCS Dimensions Series Heat of Rejection Ice Machine Air Conditioning Installation Instructions Section Location of Ice MachineIce Machine Heat of Rejection S1800M Water-Cooled Electrical Requirements Section Installation Instructions Electrical ServiceVoltage Minimum Circuit Ampacity Self Contained ICE Machine 230/1/50 For United Kingdom OnlySelf Contained ICE Machine 115/1/60 or 208-230/1/60 Self Contained ICE Machine 208-230/3/60 Drain Connections Cooling Tower ApplicationsWater Supply Water Inlet Lines Condenser Installation Instructions SectionTypical Water Supply Drain Installation Water Supply and Drain Line SIZING/CONNECTIONS 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 Automatic SHUT-OFF 7. Automatic Shut-Off Safety TimersHarvest Sequence 5. Water Purge Harvest Ice Thickness Check Ice Machine Operation Section Operational ChecksWater Level ICE Thickness Check Harvest Sequence Water Purge Water Purge Adjustment This page Intentionally Left Blank Ice Machine Operation Section AlphaSan→ Exterior CleaningIce Machine Inspection Water-Cooled Condenser Water Regulating Valve Sachet Replacement Procedure Maintenance Section GuardianInstallation Sachet Replacement Frequency Step Section Maintenance Interior Cleaning and SanitizingCleaning Procedure Model Amount of Cleaner 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 Self-Contained Water Purge SELF-CONTAINED ModelsInitial Start-Up or Start-Up After Automatic Shut-Off Water Purge Self-Contained Refrigeration System Start-Up Refrigeration System Start Up 5 Seconds Toggle SwitchRefrigeration System START-UP Self-Contained Pre-Chill Self-Contained Models Electrical System SectionFreeze Sequence PRE-CHILL 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 Main Fuse SpecificationsCheck Procedure BIN Switch Water Curtain Removal Notes SymptomsDiagnostic Aids Continuity Test Determine if the Compressor is Seized Compressor Electrical DiagnosticsCheck Resistance Ohm Values Check Motor Windings to Ground Compressor Start Sequence Ptcr DiagnosticsWhat is a PTCR? During Start-Up First .25 1.0 Seconds Troubleshooting PTCR’sWHY a Good Ptcr MAY Fail To Start the Compressor Model Automatic Shut-Off and Restart Part Number Checking the PtcrManitowoc Ptcr Model Manitowoc Cera-Mite Room Relay Operation Check Diagnosing Start ComponentsCapacitor Relay Switch Setting Terminals Ohm Reading ICE/OFF/CLEAN Toggle Switch Control Board Electronic Control Board Inputs Safety Limits Harvest Light Freeze Time LOCK-IN FeatureIce Thickness Probe Cleaning HOW the Probe Works Monitoring of Harvest Light Correction Diagnosing ICE Thickness Control Circuitry Freeze Cycle Circuitry Water Inlet Valve Safety SHUT-OFFElectrical System Section Water Level Control Circuitry Water Level Probe Light 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 Times are in minutes Before Beginning ServiceWeights are in pounds ICE Production Check 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 Analyzing Discharge Pressure During Freeze or Harvest Cycle ProcedureFreeze Cycle Discharge Pressure High Checklist Freeze Cycle Discharge Pressure Low Checklist 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 3 TXV Flooding Final AnalysisColumn 1 Harvest Valve Leaking Column 2 LOW CHARGE/TXV Starving Models Dual Expansion Valve Ice Machine Model Number Refrigeration System Operational Analysis Tables High Pressure CUT-OUT Hpco Control Operating Pressures S1800 SeriesSelf-Contained Water-Cooled Cycle Times Hour Ice Production 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 Recycle RecoverNew Product Specifications Refrigerant Definitions Reclaimed Refrigerant Recovered or Recycled RefrigerantRefrigerant RE-USE Policy New Refrigerant HFC Refrigerant Questions and Answers This page Intentionally Left Blank Page Attend a Manitowoc Factory Service School