Manitowoc Ice S1000M manual Sequence Of Operation, Refrigeration System Start-Up, Freeze, Section

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Sequence Of Operation

Ice Machine Operation

Section 3

 

 

Sequence Of Operation

NOTE: The toggle switch must be in the ice position and the water curtain must be in place on the evaporator before the ice machine will start.

INITIAL START-UP OR START-UP AFTER AUTOMATIC SHUT-OFF

1. Water Purge

Before the compressor starts, the water pump and water dump solenoid are energized for 45 seconds, to completely purge the ice machine of old water. This feature ensures that the ice making cycle starts with fresh water.

The harvest valve(s) is also energized during water purge, although it stays on for an additional 5 seconds (50 seconds total on time) during the initial refrigeration system start-up.

The air compressor energizes for the last 10 seconds of the cycle.

2. Refrigeration System Start-Up

The compressor starts after the 45 second water purge, and it remains on throughout the entire Freeze and Harvest Sequences. The water fill valve is energized at the same time as the compressor. The harvest valve(s) remains on for 5 seconds during initial compressor start- up and then shuts off.

At the same time the compressor starts, the condenser fan motor (air-cooled models) is supplied with power throughout the entire Freeze and Harvest Sequences. The fan motor is wired through a fan cycle pressure control, therefore it may cycle on and off. (The compressor and condenser fan motor are wired through the contactor. As a result, anytime the contactor coil is energized, the compressor and fan motor are supplied with power.)

FREEZE SEQUENCE 3. Prechill

The compressor is on for 30 seconds (60 seconds initial cycle) prior to water flow, to prechill the evaporator. The water fill valve remains on until the water level probe is satisfied.

4. Freeze

The water pump restarts after the prechill. An even flow of water is directed across the evaporator and into each cube cell, where it freezes. The water fill valve will cycle on and then off one more time to refill the water trough.

When sufficient ice has formed, the water flow (not the ice) contacts the ice thickness probe. After approximately 10 seconds of continual water contact, the harvest sequence is initiated. The ice machine cannot initiate a harvest sequence until a 6 minute freeze lock has been surpassed.

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Part Number 80-1561-3

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Contents Installation Use and Care Manual S1000M Model Ice MachinesSafety Notices Read These Before ProceedingPERSONAL INJURY POTENTIAL Procedural NoticesManitowoc Cleaner and Sanitizer Table of Contents continued Section General InformationSection Installation Instructions AuCS Automatic Cleaning SystemSection Before Calling For Service Table of Contents continued Section Ice Machine OperationSection Maintenance Guardian Sachet Replacement FrequencySection How to Read a Model NumberSection General Information General InformationAUCS AUTOMATIC CLEANING SYSTEM AccessoriesMANITOWOC CLEANER AND SANITIZER BIN CASTERModel/Serial Number Location Model/Serial Number LocationMODEL/SERIAL PLATE LOCATION AUTHORIZED WARRANTY SERVICE Owner Warranty Registration CardWarranty Coverage Service CallsIce Machine Dimensions Section Installation InstructionsInstallation Instructions Width, Depth, and Height DimensionsLocation of Ice Machine Ice Machine Heat of RejectionThe location must be free of airborne and other contaminants FUSE/CIRCUIT BREAKER Electrical ServiceVOLTAGE MINIMUM CIRCUIT AMPACITYSELF CONTAINED ICE MACHINE 115/1/60 OR 208-230/1/60 Self-Contained Electrical Wiring ConnectionsFor United Kingdom Only SELF CONTAINED ICE MACHINE 208-230/3/60WATER SUPPLY Water Supply and Drain RequirementsCooling Tower Applications Water-Cooled Models AIR GAPTypical Water Supply Drain Installation WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONSPlumbing must conform to state and local codes Installation Check List Is the Ice Machine level?Before Starting the Ice Machine Potential Personal Injury SituationComponent Identification Section Ice Machine OperationIce Machine Operation sv31492. Refrigeration System Start-Up Sequence Of OperationINITIAL START-UP OR START-UP AFTER AUTOMATIC SHUT-OFF 1. Water Purge FREEZE SEQUENCE 3. Prechill6. Harvest SAFETY TIMERSHARVEST SEQUENCE 5. Water Purge AUTOMATIC SHUT-OFF 7. Automatic Shut-OffICE THICKNESS CHECK Operational ChecksWATER LEVEL Ice Thickness CheckWater Purge Adjustment HARVEST SEQUENCE WATER PURGE45 second setting 0 second setting THIS PAGE INTENTIONALLY LEFT BLANK Exterior Cleaning Section MaintenanceMaintenance Ice Machine InspectionCLEAN UP PROCEDURE FOR DAMAGED SACHET PACKET SACHET INSTALLATION/REPLACEMENT PROCEDUREGuardian Location GUARDIAN SACHET REPLACEMENT FREQUENCY GuardianInterior Cleaning and Sanitizing CLEANING PROCEDUREStep SANITIZING PROCEDURE Refer to Removal of Parts For CleaningRemove all ice from the bin 16 oz 500 ml cleaner REMOVAL OF PARTS FOR CLEANING/SANITIZINGCleaner 1 gal. 4 l2. Ice Thickness Probe 1. Water CurtainWater Curtain Removal Ice Thickness Probe Removal3. Water Distribution Tube 4. Water TroughWater Distribution Tube Removal Water Level Probe Water PumpWater Pump Removal PLUNGER SPRING STOP Dump Valve DisassemblyWater Dump Valve COIL SPRING4-10 Evaporator Tray RemovalDrain Line Check Valve Water Inlet Valve Removing the Front Panel4-11 Panel Removal4-12 Removal from Service/WinterizationPry Open the Water Regulating Valve AUCS→ Accessory SELF-CONTAINED WATER-COOLED ICE MACHINESChecklist Section Before Calling For ServiceBefore Calling For Service ProblemSafety Limit Feature Call for servicePage MANITOWOC ICE, INC 2004 Manitowoc Ice, Inc. Litho in U.S.A