Manitowoc Ice QF2200 Troubleshooting, Section, Safeguard Feature, Reset Procedure, SafeGuards

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Troubleshooting	Section 5

Safeguard Feature

In addition to standard safety controls, your Manitowoc ice machine features built-in SafeGuards. The ice machine will stop when conditions arise that would cause major component failure.

RESET PROCEDURE

SAFEGUARD INDICATOR LIGHTS

1.Move the ICE/OFF/CLEAN toggle switch to OFF and then back to ICE.

A.If a safeguard feature has stopped the ice machine, it will restart after a short delay. Proceed to step 2.

B.If the ice machine does not restart, see “Ice Machine Does Not Operate” on previous page.

2.Allow the ice machine to run to determine if the condition is reoccurring.

A.If the ice machine continues to run, the condition has corrected itself. Allow the ice machine to continue running.

B.If the ice machine stops again, the condition has reoccurred.

SafeGuards

•No Water

•Gear Motor Speed is Incorrect

•QF400/QC700/QF800 Only - Discharge line temperature is too high or low during the freeze cycle.

•QF2200 Only - Liquid line temperature is too high or low during the freeze cycle.

STANDBY MODE

The first time a failure occurs, the ice machine de- energizes and initiates a Standby Mode. The ice machine will remain off for 60 minutes, then automatically restart to see if the problem reoccurs. During the Standby Mode the corresponding light flashes continuously (disch temp, water level or speed). If the same failure keeps occurring, the ice machine will initiate a SafeGuard Mode and remain off until manually restarted.

During a SafeGuard Mode the corresponding light (disch temp, water level or speed) will flash continuously.

The SafeGuard will remain in memory for 48 hours of ice making time. After 48 hours of ice making time the SafeGuard will automatically be erased. If power is interrupted during the 48 hours, the timing will resume when power is applied to the ice machine.

Placing the toggle switch in the OFF position:

The corresponding light will flash continuously.

Placing the toggle switch in the ICE position:

The light will de-energize and a start-up sequence will initiate.

The corresponding light will flash anytime the toggle switch is placed in the OFF position provided

48 hours of ice making time has not been exceeded.

5-2	Revised 8/2003	Part No. 80-1214-3
	Revised 8/2003

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Contents Service Manual Flake Models QF0400/QF0800 QF2200/QF2300Chiplet Models QC0700 Flake / Chiplet Model Ice MachinesRead These Before Proceeding Safety NoticesProcedural Notices PERSONAL INJURY POTENTIALAccessories Table of ContentsSection Installation Instructions Manitowoc Cleaner and SanitizerExterior Cleaning Table of Contents continuedSection Maintenance Preventative Maintenance Cleaning ProcedureReset Procedure Table of Contents continued SectionSection Troubleshooting SafeGuard Indicator LightsSection Refrigeration System ICE/OFF/CLEAN Toggle SwitchCompressor Electrical Diagnostics 6-46Table of Contents continued Table of Contents continued Accessories Section General InformationHow to Read a Model Number MANITOWOC CLEANER AND SANITIZERModel/Serial Number Location General InformationSection Model/Serial Number LocationGENERAL Owner Warranty Registration CardWarranty Coverage PARTSTHIS PAGE INTENTIONALLY LEFT BLANK QF400 AIR COOLED ICE MACHINE Section Installation InstructionsIce Machine Dimensions QC700/QF800 AIR COOLED ICE MACHINEInstallation Instructions Ice Machine Heat of Rejection Location of Ice MachineIce Machine Head Section Clearance Requirements Location of Remote Condensing UnitQC700/QF800 Air-CooledIce Machines Only Leveling the Ice Storage BinCondenser Air Baffle Air BaffleFUSE/CIRCUIT BREAKER Electrical ServiceVOLTAGE MINIMUM CIRCUIT AMPACITYIce Machine Head Section Electrical RequirementsFor United Kingdom Only Remote Condensing Unit115/60/1 QF2200 ICE MACHINE HEAD SECTION 115/60/1QF2300 ICE MACHINE HEAD SECTION 230/1/50Remote Electrical Wiring Connections RFC2385 REMOTE CONDENSING UNIT 208-230/1/60RFC2085 REMOTE CONDENSING UNIT 208-230/1/60 POTABLE WATER SUPPLY Ice Machine Head Section Water Supply and DrainsCooling Tower Applications Water-CooledModels POTABLE WATER INLET LINESTypical Water Supply Drain Installation 2-10WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS QF2200/RFC2085 AND QF2300/RFC2385 ONLY Refrigeration System Installation2-11 USAGE WITH NON-MANITOWOC CONDENSING UNITSStep 1 Verify Ice Machine and Remote Condensing Refrigeration Line Set Installation2-12 Unit Locations Are Within GuidelinesC. SUCTION LINE OIL TRAPS Service Loop2-13 Manitowoc S-TrapKitStep 4 Connecting the line set 2-142-15 Torque Value’s Open Receiver Service Valve2-16 Step 7 Leak Check The Refrigeration System2-17 Suction Shut Off Valve Insulation2-18 ICE MACHINE HEAD SECTION QC700/QF800 Section Ice Machine OperationComponent Identification QF400QF2300 Ice Machine OperationSection RFC2385 Remote Condensing UnitOperational Checks GENERALWATER LEVEL CHECK Heavily Scaled Cleaning Procedure Interior Cleaning and SanitizingCleaning/Sanitizing Procedure EXTERIOR CLEANINGSelf-Contained Air-CooledFilter CLEANING THE CONDENSERAir-CooledCondenser Straighten Bent Condenser FinsMANITOWOC’S CLEANING TECHNOLOGY PREVENTATIVE MAINTENANCE CLEANING PROCEDURE QF400 CLEANING/SANITIZING PROCEDURE QC700/QF800/QF2300 CLEANING/SANITIZING PROCEDURE QF400 3-10 part numberonly REMOVAL OF PARTS FOR CLEANING/SANITIZING 3-11QC700/QF800 3-12Water Level Probe Removal Water Reservoir Cover Removal3-13 QF2300 ShownFloat Valve Removal 3-14 Water Reservoir RemovalIce Diverter Removal 3-15 Ice Chute Removal3-16 Bin Door RemovalCabinet Removal Dump Valve Disassembly 3-17Water Dump Valve WATER COOLED CONDENSING UNIT Removal from Service/Winterization3-18 Pry Open the Water Regulating ValvePRIOR TO START-UP Section Ice Machine Sequence of OperationQF400/QC700/QF800 INITIAL START-UP1A. FlushRemote Condensing Unit 2. Freeze Ice Machine Sequence of OperationQF2200 Remote Condensing Unit 3. Automatic Shut-OffQF2300 THIS PAGE INTENTIONALLY LEFT BLANK Section Troubleshooting ChecklistRESET PROCEDURE TroubleshootingSafeguard Feature SAFEGUARD INDICATOR LIGHTSSAFEGUARD MODES No Water TroubleshootingAnalyzing Why SafeGuards May Stop the Ice Machine No Water ChecklistGear Motor Speed Checklist Gear Motor SpeedTemperature Sensor Checklist QF400/QC700/QF800 Temperature is Too High or Low QF400/QC700/QF800Temperature Sensor Checklist QF2200 Temperature is Too High or Low QF2200 OnlyGear Box Removal QF2200/QF2300 Evaporator Removal 5-10 Section Electrical System Energized Parts ChartsElectrical System Electrical System Wiring Diagram Sequence of OperationL1 1B. WATER FILL Freeze Cycle Automatic Shut-Off 3B. DRAIN EVAPORATOR Section Wiring Diagram Sequence of L1 Operation 6-106-11 6-12 6-13 6-14 6-15 6-16 6-17 RFC2085 Initial Start-Up Remote Condensing Unit6-18 Initial Start-Up6-19 RFC2085 Initial Start-Up6-20 6-21 RFC2085 Freeze Cycle6-22 QF2200 Automatic Shut-Off6-23 RFC2085 Automatic Shut-Off6-24 6-25 8 Minute LockoutWiring Diagram Sequence of Operation 6-266-27 RFC23856-28 6-29 6-30 6-31 6-32 6-33 6-34 QF2300 Automatic Shut-Off6-35 Wiring Diagrams WIRING DIAGRAM LEGEND6-36 6-37 ICE MACHINE HEAD SECTION QF400115V/60Hz/1Ph - 230V/50Hz/1Ph 6-38 QC700/QF800 115V/60Hz/1Ph - 230V/50Hz/1Ph6-39 COMPRESSOR SECTION QC700/QF800115/60/1 - 230/50/1 6-40 ICE MACHINE HEAD SECTION QF22006-41 RFC2085 230V/60HZ/1PH - 230/50/16-42 RFC2085 208-230V/60HZ/3PHDiagram Shown During Freeze Cycle 6-43ICE MACHINE HEAD SECTION 6-44 RFC2385 230V/60HZ/1PH - 230/50/16-45 RFC2385 208-230V/60HZ/3PHControl Board 6-46Specifications Component Specifications and DiagnosticsICE/OFF/CLEAN TOGGLE SWITCH Function Check Procedure6-48 6-49 MOTOR SPEED SENSOR FunctionFailure Modes 6-50 WATER LEVEL PROBES Function6-51 6-52 TEMPERATURE SENSOR FunctionTEMPERATURE/RESISTANCE CHART 6-53 CONTROL BOARD RELAYS FunctionMAIN FUSE Function 6-54 WATER FLOAT VALVE FunctionWATER LEVEL CHECK 6-55 HIGH PRESSURE CONTROL HPCO FunctionFunction 6-56 FAN CYCLE CONTROL FunctionCheck Resistance Ohm Values COMPRESSOR ELECTRICAL DIAGNOSTICS6-57 Check Motor Windings to Ground6-58 Diagnosing Start ComponentsRelay Operation Check 6-59 Diagnosing An Ice Machine That Will Not RunDiagnosing A Condensing Unit That Will Not Run QF400/QC700/QF800/QF2200/QF23006-60 Section Refrigeration System Tubing SchematicSV3082 Refrigeration System QF2200/RFC2085Condensing Unit QF2300/RFC2385 Refrigeration System Diagnostics BEFORE BEGINNING SERVICE ICE PRODUCTION/QUALITY CHECK Quality CheckIce Production Check INSTALLATION/VISUAL INSPECTION CHECKLIST WATER SYSTEM CHECKLISTSAFEGUARDS Procedure Discharge Pressure High ChecklistDischarge Pressure Low Checklist Suction Pressure High Checklist Suction Pressure Low ChecklistANALYZING SUCTION PRESSURE Analysis EQUALIZATION VALVE QF2300 GeneralNormal Operation WATER REGULATING VALVE WATER-COOLEDMODELS ONLYFREEZE CYCLE OPERATION Air-CooledIce Machines 7-10HEADMASTER CONTROL VALVE Function Air-CooledCondensing Units24 Hour Ice Production 7-11QF400 SELF-CONTAINEDAIR COOLED Operating Pressures7-12 QC700 SELF-CONTAINEDAIR COOLEDQC700 SELF-CONTAINEDWATER COOLED 7-13 QF800 SELF-CONTAINEDAIR COOLEDQF800 SELF-CONTAINEDWATER COOLED 7-14 QF2200/RFC2085 REMOTE AIR COOLEDQF2300/RFC2385 REMOTE AIR COOLED Normal Self-ContainedModel Procedures Refrigerant Recovery/Evacuation and RechargingREFRIGERANT RECOVERY/EVACUATION Recovery/Evacuation ConnectionsRecovery/Evacuation QF2200/QF2300 7-16Connections Self-ContainedModel Charging Procedures 7-17Charging Connections Remote Charging Procedures QF2200/QF2300 7-18SYSTEM CONTAMINATION CLEAN-UP General 7-19Determining Severity Of Contamination Mild System Contamination Cleanup Procedure Severe System Contamination Cleanup Procedure7-20 7-21 Using Pinch-OffTool 7-22SV1406 FILTER-DRIERS Liquid Line Filter Drier SUCTION CLEAN-UPFILTER/DRIER QF400/QC700/QF8007-23 Remote Models7-24 REFRIGERANT DEFINITIONS RecoverNew Product Specifications RecycleRevised 8/2003 Attend A Manitowoc Factory Service School REFRIGERANT RE-USEPOLICY 3.Recovered or Recycled Refrigerant7-25 1.New Refrigerant7-26

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