Manitowoc Ice QF2300, QF0800, QC0700 Section, Electrical System, 6-23, RFC2085 Automatic Shut-Off

Page 85
RFC2085

Section 6

Electrical System

 

 

RFC2085

Automatic Shut-Off

When the refrigerant pressure is low enough to open the low-pressure switch, the contactor coil is de- energized and the compressor and condenser fan motor stop.

L1

 

 

GROUND

COMPRESSOR

L2

 

 

CRANKCASE

 

(94)

HEATER

(95)

(96)

 

(74)

 

 

 

LOW PRESSURE

CONTACTOR

HIGH PRESSURE

COIL

CUT-OUT

CUT-OUT

 

CONTACTOR

FAN MOTOR

CONTACTOR

CONTACTS

CONTACTS

 

RUN

 

 

CAPACITOR

 

 

 

 

(49)

 

(50)

 

 

 

 

 

 

COMPRESSOR

 

 

RUN

 

 

 

CAPACITOR

 

C

S

(47)

 

 

 

 

 

 

(46)

 

R

 

 

 

(45)

OVERLOAD

 

 

 

 

(48)

 

 

 

(44)

 

 

 

 

 

 

 

5

2

1

 

(43)

 

RELAY

START

 

 

CAPACITOR

SV3040

3. Automatic Shut-Off (45 Seconds)

High Pressure Control

Low Pressure Control

Contactor Coil

Compressor

Condenser Fan Motor

CLOSED

OPEN

OPEN / OFF

OFF

OFF

Part No. 80-1214-3

Revised 8/2003

6-23

 

 

Page 84 Page 86
Image 85
Page 84 Page 86
Contents Chiplet Models QC0700 Flake Models QF0400/QF0800 QF2200/QF2300Service Manual Flake / Chiplet Model Ice MachinesProcedural Notices Safety NoticesRead These Before Proceeding PERSONAL INJURY POTENTIALSection Installation Instructions Table of ContentsAccessories Manitowoc Cleaner and SanitizerSection Maintenance Table of Contents continuedExterior Cleaning Preventative Maintenance Cleaning ProcedureSection Troubleshooting Table of Contents continued SectionReset Procedure SafeGuard Indicator LightsCompressor Electrical Diagnostics ICE/OFF/CLEAN Toggle SwitchSection Refrigeration System 6-46Table of Contents continued Revised 8/2003 How to Read a Model Number Section General InformationAccessories MANITOWOC CLEANER AND SANITIZERSection General InformationModel/Serial Number Location Model/Serial Number LocationWarranty Coverage Owner Warranty Registration CardGENERAL PARTSTHIS PAGE INTENTIONALLY LEFT BLANK Ice Machine Dimensions Section Installation InstructionsQF400 AIR COOLED ICE MACHINE QC700/QF800 AIR COOLED ICE MACHINEInstallation Instructions Ice Machine Head Section Clearance Requirements Location of Ice MachineIce Machine Heat of Rejection Location of Remote Condensing UnitCondenser Air Baffle Leveling the Ice Storage BinQC700/QF800 Air-CooledIce Machines Only Air BaffleVOLTAGE Electrical ServiceFUSE/CIRCUIT BREAKER MINIMUM CIRCUIT AMPACITYFor United Kingdom Only Electrical RequirementsIce Machine Head Section Remote Condensing UnitQF2300 ICE MACHINE HEAD SECTION QF2200 ICE MACHINE HEAD SECTION 115/60/1115/60/1 230/1/50RFC2385 REMOTE CONDENSING UNIT 208-230/1/60 Remote Electrical Wiring ConnectionsRFC2085 REMOTE CONDENSING UNIT 208-230/1/60 Cooling Tower Applications Water-CooledModels Ice Machine Head Section Water Supply and DrainsPOTABLE WATER SUPPLY POTABLE WATER INLET LINES2-10 Typical Water Supply Drain InstallationWATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS 2-11 Refrigeration System InstallationQF2200/RFC2085 AND QF2300/RFC2385 ONLY USAGE WITH NON-MANITOWOC CONDENSING UNITS2-12 Refrigeration Line Set InstallationStep 1 Verify Ice Machine and Remote Condensing Unit Locations Are Within Guidelines2-13 Service LoopC. SUCTION LINE OIL TRAPS Manitowoc S-TrapKit2-14 Step 4 Connecting the line set2-15 2-16 Open Receiver Service ValveTorque Value’s Step 7 Leak Check The Refrigeration SystemSuction Shut Off Valve Insulation 2-172-18 Component Identification Section Ice Machine OperationICE MACHINE HEAD SECTION QC700/QF800 QF400Section Ice Machine OperationQF2300 RFC2385 Remote Condensing UnitGENERAL Operational ChecksWATER LEVEL CHECK Cleaning/Sanitizing Procedure Interior Cleaning and SanitizingHeavily Scaled Cleaning Procedure EXTERIOR CLEANINGAir-CooledCondenser CLEANING THE CONDENSERSelf-Contained Air-CooledFilter Straighten Bent Condenser FinsMANITOWOC’S CLEANING TECHNOLOGY PREVENTATIVE MAINTENANCE CLEANING PROCEDURE QF400 CLEANING/SANITIZING PROCEDURE QC700/QF800/QF2300 CLEANING/SANITIZING PROCEDURE QF400 part number 3-10only 3-11 REMOVAL OF PARTS FOR CLEANING/SANITIZINGWater Level Probe Removal 3-12QC700/QF800 Water Reservoir Cover RemovalQF2300 Shown 3-13Float Valve Removal Water Reservoir Removal 3-14Ice Diverter Removal Ice Chute Removal 3-15Bin Door Removal 3-16Cabinet Removal 3-17 Dump Valve DisassemblyWater Dump Valve 3-18 Removal from Service/WinterizationWATER COOLED CONDENSING UNIT Pry Open the Water Regulating ValveQF400/QC700/QF800 Section Ice Machine Sequence of OperationPRIOR TO START-UP INITIAL START-UP1A. FlushQF2200 Ice Machine Sequence of OperationRemote Condensing Unit 2. Freeze Remote Condensing Unit 3. Automatic Shut-OffQF2300 THIS PAGE INTENTIONALLY LEFT BLANK Checklist Section TroubleshootingSafeguard Feature TroubleshootingRESET PROCEDURE SAFEGUARD INDICATOR LIGHTSAnalyzing Why SafeGuards May Stop the Ice Machine TroubleshootingSAFEGUARD MODES No Water No Water ChecklistGear Motor Speed Gear Motor Speed ChecklistTemperature is Too High or Low QF400/QC700/QF800 Temperature Sensor Checklist QF400/QC700/QF800Temperature is Too High or Low QF2200 Only Temperature Sensor Checklist QF2200Gear Box Removal QF2200/QF2300 Evaporator Removal 5-10 Energized Parts Charts Section Electrical SystemElectrical System Section Wiring Diagram Sequence of OperationL1 1B. WATER FILL Freeze Cycle Automatic Shut-Off 3B. DRAIN EVAPORATOR Electrical System 6-10 Wiring Diagram Sequence of L1 Operation6-11 6-12 6-13 6-14 6-15 6-16 RFC2085 Initial Start-Up Remote Condensing Unit 6-17Initial Start-Up 6-18RFC2085 Initial Start-Up 6-196-20 RFC2085 Freeze Cycle 6-21QF2200 Automatic Shut-Off 6-22RFC2085 Automatic Shut-Off 6-236-24 8 Minute Lockout 6-256-26 Wiring Diagram Sequence of OperationRFC2385 6-276-28 6-29 6-30 6-31 6-32 6-33 QF2300 Automatic Shut-Off 6-346-35 WIRING DIAGRAM LEGEND Wiring Diagrams6-36 ICE MACHINE HEAD SECTION QF400 6-37115V/60Hz/1Ph - 230V/50Hz/1Ph QC700/QF800 115V/60Hz/1Ph - 230V/50Hz/1Ph 6-38COMPRESSOR SECTION QC700/QF800 6-39115/60/1 - 230/50/1 ICE MACHINE HEAD SECTION QF2200 6-40RFC2085 230V/60HZ/1PH - 230/50/1 6-41RFC2085 208-230V/60HZ/3PH 6-426-43 Diagram Shown During Freeze CycleICE MACHINE HEAD SECTION RFC2385 230V/60HZ/1PH - 230/50/1 6-44RFC2385 208-230V/60HZ/3PH 6-456-46 Control BoardICE/OFF/CLEAN TOGGLE SWITCH Function Component Specifications and DiagnosticsSpecifications Check Procedure6-48 MOTOR SPEED SENSOR Function 6-49Failure Modes WATER LEVEL PROBES Function 6-506-51 TEMPERATURE SENSOR Function 6-52TEMPERATURE/RESISTANCE CHART CONTROL BOARD RELAYS Function 6-53MAIN FUSE Function WATER FLOAT VALVE Function 6-54WATER LEVEL CHECK HIGH PRESSURE CONTROL HPCO Function 6-55Function FAN CYCLE CONTROL Function 6-566-57 COMPRESSOR ELECTRICAL DIAGNOSTICSCheck Resistance Ohm Values Check Motor Windings to GroundDiagnosing Start Components 6-58Relay Operation Check Diagnosing A Condensing Unit That Will Not Run Diagnosing An Ice Machine That Will Not Run6-59 QF400/QC700/QF800/QF2200/QF23006-60 Tubing Schematic Section Refrigeration SystemSV3082 QF2200/RFC2085 Refrigeration SystemCondensing Unit QF2300/RFC2385 Refrigeration System Diagnostics ICE PRODUCTION/QUALITY CHECK Quality Check BEFORE BEGINNING SERVICEIce Production Check WATER SYSTEM CHECKLIST INSTALLATION/VISUAL INSPECTION CHECKLISTSAFEGUARDS Discharge Pressure High Checklist ProcedureDischarge Pressure Low Checklist Suction Pressure Low Checklist Suction Pressure High ChecklistANALYZING SUCTION PRESSURE Normal Operation EQUALIZATION VALVE QF2300 GeneralAnalysis WATER REGULATING VALVE WATER-COOLEDMODELS ONLYHEADMASTER CONTROL VALVE Function 7-10FREEZE CYCLE OPERATION Air-CooledIce Machines Air-CooledCondensing UnitsQF400 SELF-CONTAINEDAIR COOLED 7-1124 Hour Ice Production Operating PressuresQC700 SELF-CONTAINEDAIR COOLED 7-12QC700 SELF-CONTAINEDWATER COOLED QF800 SELF-CONTAINEDAIR COOLED 7-13QF800 SELF-CONTAINEDWATER COOLED QF2200/RFC2085 REMOTE AIR COOLED 7-14QF2300/RFC2385 REMOTE AIR COOLED REFRIGERANT RECOVERY/EVACUATION Refrigerant Recovery/Evacuation and RechargingNormal Self-ContainedModel Procedures Recovery/Evacuation Connections7-16 Recovery/Evacuation QF2200/QF2300Connections 7-17 Self-ContainedModel Charging ProceduresCharging Connections 7-18 Remote Charging Procedures QF2200/QF23007-19 SYSTEM CONTAMINATION CLEAN-UP GeneralDetermining Severity Of Contamination Severe System Contamination Cleanup Procedure Mild System Contamination Cleanup Procedure7-20 7-21 7-22 Using Pinch-OffToolSV1406 7-23 SUCTION CLEAN-UPFILTER/DRIER QF400/QC700/QF800FILTER-DRIERS Liquid Line Filter Drier Remote ModelsNew Product Specifications REFRIGERANT DEFINITIONS Recover7-24 RecycleRevised 8/2003 Attend A Manitowoc Factory Service School 7-25 3.Recovered or Recycled RefrigerantREFRIGERANT RE-USEPOLICY 1.New Refrigerant7-26
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