Self-Contained Charging Procedures | Manitowoc Ice S1800 specs

Refrigeration System	Section 7

Self-Contained Charging Procedures

Important

The charge is critical on all Manitowoc ice machines. Use a scale or a charging cylinder to ensure the proper charge is installed.

1. Be sure the toggle switch is in the OFF position.

MANIFOLD SET

CLOSEDOPEN

LOW SIDE	FRONTSEATED	BACKSEATED	HIGH SIDE
LOW SIDE			HIGH SIDE
SERVICE			SERVICE
VALVE			VALVE

CHARGING

CYLINDERVACUUM PUMP/

RECOVERY UNIT

CLOSED

OPEN

SV1404B

Figure 7-9. Charging Connections

2.Close the vacuum pump valve, the low side service valve, and the low side manifold gauge valve.

3.Open the high side manifold gauge valve, and backseat the high side service valve.

4.Open the charging cylinder and add the proper refrigerant charge (shown on nameplate) through the discharge service valve.

5.Let the system “settle” for 2 to 3 minutes.

6.Place the toggle switch in the ICE position.

7.Close the high side on the manifold gauge set. Add any remaining vapor charge through the suction service valve (if necessary).

NOTE: Manifold gauges must be removed properly to ensure that no refrigerant contamination or loss occurs.

8.Make sure that all of the vapor in the charging hoses is drawn into the ice machine before disconnecting the charging hoses.

A.Run the ice machine in freeze cycle.

B.Close the high side service valve at the ice machine.

C.Open the low side service valve at the ice machine.

D.Open the high and low side valves on the manifold gauge set. Any refrigerant in the lines will be pulled into the low side of the system.

E.Allow the pressures to equalize while the ice machine is in the freeze cycle.

F.Close the low side service valve at the ice machine.

G.Remove the hoses from the ice machine and install the caps.

7-22	Part Number 80-1634-3

Image 88

Manitowoc Ice S1800 service manual Self-Contained Charging Procedures, Charging Connections

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