Manitowoc QF0400 Service Manual
  1. Manuals
  2. Brands
  3. Manitowoc Manuals
  4. Ice Maker
  5. QF0400
  6. Service manual

Manitowoc QF0400 Service Manual

Flake / chiplet model ice machines
Hide thumbs Also See for QF0400:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Technician's Handbook, Installation, Use & Care Manual
Flake / Chiplet Model
Ice Machines
Flake Models QF0400/QF0800/
QF2200/QF2300
Chiplet Models QC0700
Service
Manual
Part Number 80-1214-3
Revised 8/2003
07/03
Downloaded from
www.Manualslib.com
manuals search engine

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the QF0400 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Manitowoc QF0400

Summary of Contents for Manitowoc QF0400

  • Page 1 Flake / Chiplet Model Ice Machines Flake Models QF0400/QF0800/ QF2200/QF2300 Chiplet Models QC0700 Service Manual Part Number 80-1214-3 Revised 8/2003 07/03 Downloaded from www.Manualslib.com manuals search engine...
  • Page 2 Caution statement before proceeding, valuable care and maintenance information. If you and work carefully. encounter problems not covered by this manual, do not proceed, contact Manitowoc Ice, Inc. We will be happy to provide assistance. Important Routine adjustments and maintenance procedures outlined in this manual are not covered by the warranty.

  • Page 3: Table Of Contents

    Arctic Pure Water Filter System ........Manitowoc Cleaner and Sanitizer ....... . .
  • Page 4 Air-Cooled Condenser ......... Manitowoc’s Cleaning Technology ........
  • Page 5 Table of Contents (continued) Section 4 Ice Machine Sequence of Operation QF400/QC700/QF800 ..........Prior to Start-Up .
  • Page 6 Table of Contents (continued) Control Board ........... 6-46 Component Specifications and Diagnostics .
  • Page 7 Table of Contents (continued) Refrigerant Recovery/Evacuation and Recharging ..... . 7-15 Refrigerant Recovery/Evacuation ....... . . 7-15 System Contamination Clean-Up .
  • Page 8 Table of Contents (continued) Revised 8/2003 Part No. 80-1214-3 Downloaded from www.Manualslib.com manuals search engine...

  • Page 9: General Information

    QF2396N RFC2385 sediment, and removing chlorine taste and odor. MANITOWOC CLEANER AND SANITIZER Manitowoc Ice Machine Cleaner and Sanitizer are Warning available in convenient 16 oz. (473 ml) and 1 gal (3.78 l) PERSONAL INJURY POTENTIAL bottles. These are the only cleaner and sanitizer Do not operate equipment that has been misused, approved for use with Manitowoc products.

  • Page 10: Model/Serial Number Location

    Model/Serial Number Location These numbers are required when requesting The model and serial number are listed on the OWNER information from your local Manitowoc distributor, WARRANTY REGISTRATION CARD. They are also service representative, or Manitowoc Ice, Inc. listed on the MODEL/SERIAL NUMBER DECAL affixed to the ice machine head section and condensing unit.

  • Page 11: Owner Warranty Registration Card

    If the OWNER WARRANTY REGISTRATION CARD is or damage caused by floods, storms, or other acts of not returned, Manitowoc will use the date of sale to the God. Manitowoc Distributor as the first day of warranty 4.

  • Page 12: General Information Section

    General Information Section 1 THIS PAGE INTENTIONALLY LEFT BLANK Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

  • Page 13: Installation Instructions

    Section 2 Installation Instructions Ice Machine Dimensions QF400 AIR COOLED ICE MACHINE QC700/QF800 AIR COOLED ICE MACHINE 19” 22” 26” 24.5” (55.88 CM) (48.2 CM) (66 CM) (62.23 CM) 32.5” (82.55 CM) 26.5” 7.2” (67.3 CM) (18.2 CM) 3.03” 3.04” (7.7 CM) (7.72 CM) 1.36”...

  • Page 14: Ice Machine Head Section And Remote Condensing Unit Dimensions

    Installation Instructions Section 2 Ice Machine Head Section and Remote Condensing Unit Dimensions QF2200/QF2300 AND RFC2085/RFC2385 REMOTE CONDENSING UNIT 24.13” 24.5” (53.7 CM) 34” 30” (62.23 CM) (86.4 CM) (76.2 CM) 2.25” (5.72 CM) 4.5” (11.43 CM) 25.75” 23.5” (67.3 CM) 14.5”...

  • Page 15: Location Of Ice Machine

    Section 2 Installation Instructions Location of Ice Machine Ice Machine Heat of Rejection The location selected for the ice machine must meet the Series following criteria. If any of these criteria are not met, Heat of Rejection* Condensing Unit select another location. QF400 4000 •...

  • Page 16: Leveling The Ice Storage Bin

    Installation Instructions Section 2 Leveling the Ice Storage Bin Condenser Air Baffle 1. Screw the leveling legs onto the bottom of the bin. (QC700/QF800 Air-Cooled Ice Machines Only) 2. Screw the foot of each leg in as far as possible. The air-cooled baffle prevents condenser air from recirculating.

  • Page 17: Electrical Service

    Section 2 Installation Instructions Electrical Service FUSE/CIRCUIT BREAKER A separate fuse/circuit breaker must be provided for GENERAL each ice machine. Circuit breakers must be H.A.C.R. rated (does not apply in Canada). Warning QF400 115/60/1 ice machines are factory pre-wired All wiring must conform to local, state and national with a power cord and 5-15P plug confirmation.

  • Page 18: Electrical Requirements

    Installation Instructions Section 2 Electrical Requirements Ice Machine Head Section Remote Air-Cooled Water Cooled Air-Cooled Voltage Maximum Phase Maximum Minimum Total Minimum Maximum Minimum Machine Fuse/ Cycle Fuse/Circuit Circuit Circuit Circuit Fuse/Circuit Circuit Circuit Breaker Amps Amps Amps Breaker Amps Breaker 115/1/60 QF400...

  • Page 19: Ice Machine Head Section Electrical Wiring Connections

    Section 2 Installation Instructions Ice Machine Head Section Electrical Wiring Connections QF2200 ICE MACHINE HEAD SECTION Warning 115/60/1 These diagrams are not intended to show proper ICE MACHINE wire routing, wire sizing, disconnects, etc., only the CONNECTIONS correct wire connections. All electrical work, including wire routing and grounding, must conform to local, state and national electrical codes.

  • Page 20: Remote Electrical Wiring Connections

    Installation Instructions Section 2 Remote Electrical Wiring Connections RFC2385 REMOTE CONDENSING UNIT 208-230/1/60 Warning These diagrams are not intended to show proper ICE MACHINE CONDENSING UNIT CONNECTIONS CONNECTIONS wire routing, wire sizing, disconnects, etc., only the correct wire connections. All electrical work, including wire routing and grounding, must conform to local, state and national electrical codes.

  • Page 21: Ice Machine Head Section Water Supply And Drains

    • The floor drain must be large enough to Important accommodate drainage from all drains. If you are installing a Manitowoc water filter system, • Run separate bin and water-cooled condenser drain refer to the Installation Instructions supplied with the lines.

  • Page 22: Water Supply And Drain Line Sizing/Connections

    Installation Instructions Section 2 WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS ! Caution Plumbing must conform to state and local codes. Tubing Size Up to Ice Location Water Temperature Water Pressure Ice Machine Fitting Machine Fitting 45°F (6°C) Min. 20 psi (137.9 kPA) Min. 3/8"...

  • Page 23: Refrigeration System Installation

    EPA certified Manitowoc Condensing Units are specifically designed refrigeration technician aware of the dangers of dealing for usage with a Manitowoc Flake/Chiplet Ice Machine with refrigerant charged equipment. Head Sections. Manitowoc Flake/Chiplet Ice Machines will not operate with non-Manitowoc condensing units.

  • Page 24: Refrigeration Line Set Installation

    Installation Instructions Section 2 Refrigeration Line Set Installation GENERAL A. LINE SET LENGTH Refrigeration line set installations consist of vertical and 100 feet (30.5 m) Length: The maximum measured horizontal line set distances between the ice machine length the line set can be. and the condensing unit.

  • Page 25: Suction Line Oil Traps

    If a line set has a rise followed by a drop, another rise the ice machine head section and remote condensing cannot be made. Likewise, if a line set has a drop unit. S-Trap Kits are available from Manitowoc (refer to followed by a rise, another drop cannot be made. chart).
  • Page 26 Installation Instructions Section 2 Step 4 Connecting the line set. Connect The Line Set To The Remote Condensing Unit To prevent oxidation of the copper, purge line set and The compressor oil rapidly absorbs moisture. Be condensing unit with dry nitrogen while brazing. prepared to complete line set installation and start your Connect The Line Set To The Ice Machine Head evacuation process in order to minimize the time the...
  • Page 27 Section 2 Installation Instructions Step 6 Open The Valves Prior To Starting The Ice Step 5 Pressure Test and Evacuate The Line Set and Remote Condensing Unit Machine. Schrader valve core removal tools that allow for removal A. Slowly backseat (open-turn counterclockwise) and installation of the valve cores without removing the suction line shut off valve.
  • Page 28 Installation Instructions Section 2 Step 7 Leak Check The Refrigeration System Verify O-ring in schrader valve caps are intact and reinstall on shut off valves to prevent refrigerant leakage. Leak check the new line set connections at the ice Replace shut off valve access caps and torque to the machine head section, condensing unit and S trap as following specifications.
  • Page 29 Section 2 Installation Instructions Suction Shut Off Valve Insulation The pre-formed suction shut-off valve insulation is located in the plastic bag taped to the water curtain. A. Verify valve and schrader caps are tightened to specifications (see Step 6). PRE-FORMED INSULATION TIGHTEN VALVE CAPS TO SV3084...
  • Page 30 Installation Instructions Section 2 THIS PAGE INTENTIONALLY LEFT BLANK 2-18 Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

  • Page 31: Component Identification

    Section 3 Ice Machine Operation Component Identification ICE MACHINE HEAD SECTION QC700/QF800 QUARTER TURN WATER LEVEL THUMBSCREWS PROBE CLEANING SOLUTION FILL HOLE CONDENSER AIR FILTER DUMP VALVE WATER FLOAT VALVE COIL CONDENSER FAN MOTOR POTABLE ICE CHUTE WATER INLET ICE/OFF/CLEAN TOGGLE SWITCH WATER INLET QUICK POTABLE WATER...

  • Page 32: Remote Condensing Units

    Ice Machine Operation Section 3 QF2300 CLEANING SOLUTION FILL ICE CHUTE HOLE CONDENSER RETAINING FAN MOTOR CLAMP CONDENSER ELECTRICAL EVAPORATOR COMPARTMENT ICE/OFF/ CLEAN TOGGLE SWITCH ICE CHUTE GEAT MOTOR/ GEAR BOX ASSEMBLY SUCTION FILTER HEAD WATER LEVEL FLOAT VALVE PRESSURE PROBES COMPRESSOR CONTROL...

  • Page 33: Operational Checks

    Ice Machine Operation Operational Checks GENERAL WATER LEVEL CHECK Manitowoc ice machines are factory-operated and The float valve maintains the correct water level. The adjusted before shipment. Normally, a newly installed ice water level must allow the water level probes to maintain machine does not require any adjustment.

  • Page 34: Interior Cleaning And Sanitizing

    Removes mineral deposits from areas or surfaces sanitizing. that are in direct contact with water during the freeze cycle (reservoir, evaporator, auger, drain lines). Manitowoc Ice Machine Cleaner and Sanitizer are the only products approved for use in Manitowoc ice Cleaning/Sanitizing Procedure machines.

  • Page 35: Cleaning The Condenser

    Section 3 Ice Machine Operation 3. Shine a flashlight through the condenser to check CLEANING THE CONDENSER for dirt between the fins. If dirt remains: Warning A. Blow compressed air through the condenser fins from the inside. Be careful not to bend the fan Disconnect electric power to the ice machine and blades.

  • Page 36: Manitowoc's Cleaning Technology

    MANITOWOC’S CLEANING TECHNOLOGY Manitowoc Flake/Chiplet Ice Machines include technology that allows the initiation and completion of a cleaning or sanitizing cycle at the flip of a switch. This cycle will permit cleaning of all surfaces that come in contact with the water distribution system.

  • Page 37: Preventative Maintenance Cleaning Procedure

    When the cleaning cycle is complete, the flush light will light de-energizes. Lift the front cover on the water de-energize and ice making will start automatically reservoir and add the proper amount of Manitowoc Ice Machine Cleaner. Amount of Cleaner...
  • Page 38 Ice Machine Operation Section 3 CLEANING/SANITIZING PROCEDURE QC700/QF800/QF2300 Use Ice machine cleaner part number 000000084. Step 17 Remove the water level probes from the top cover and with the wires attached, place the water level Use Ice machine sanitizer part number 94-0565-3. probes (stand upright) inside the water reservoir.

  • Page 39: Sanitizing Procedure

    Section 3 Ice Machine Operation CLEANING/SANITIZING PROCEDURE QF400 Use Ice machine cleaner part number 000000084. Step 17 Remove the water level probes from the top cover and with the wires attached, place the water level Use Ice machine sanitizer part number 94-0565-3. probes (stand upright) inside the water reservoir.

  • Page 40: Procedure To Clean Heavily Scaled Flake/Chiplet Ice Machines

    Ice Machine Operation Section 3 PROCEDURE TO CLEAN HEAVILY SCALED FLAKE/CHIPLET ICE MACHINES QF400/QC700/QF800/QF2300 Step 1 Remove front and top covers, set the toggle Step 5 Remove all water from the evaporator and water switch to the OFF position.Remove all ice from the bin. reservoir.

  • Page 41: Removal Of Parts For Cleaning/Sanitizing

    Section 3 Ice Machine Operation REMOVAL OF PARTS FOR CLEANING/SANITIZING 3. Soak the removed part(s) in a properly mixed Warning solution of cleaner and water. Disconnect electric power to the ice machine at the Solution Type Water Mixed With electric switch box before proceeding. Cleaner 1 gal.

  • Page 42: Ice Machine Operation

    Ice Machine Operation Section 3 Water Level Probe Removal Water Reservoir Cover Removal QF400/QC700/QF800/QF2300 1. Place the toggle switch in the OFF position, turn off the water supply and disconnect electrical power to Water Level Probe Removal the ice machine. 1.
  • Page 43 Section 3 Ice Machine Operation Float Valve Removal Water Reservoir Cover Removal QF2300 1. Place the toggle switch in the OFF position, turn off the water supply and disconnect electrical power to 1. Place the toggle switch in the OFF position, turn off the ice machine.
  • Page 44 Ice Diverter Removal Water Reservoir Removal 1. Place the toggle switch in the OFF position and turn QF0400 off the water supply to the ice machine at the water 1. Place the toggle switch in the OFF position, turn off the service valve.
  • Page 45 Section 3 Ice Machine Operation Ice Chute Removal QC700/QF800 QF2300 1. Follow steps to remove float reservoir. 1. Place the toggle switch in the OFF position, turn off the water supply and disconnect electrical power to 2. The ice chute and ice chute grommet will be the ice machine.
  • Page 46 Ice Machine Operation Section 3 Cabinet Removal Bin Door Removal QF0400 QF0400 Door removal allows easier access for cleaning and 1. Remove all ice from bin and disconnect power. sanitizing. 2. Remove thumbscrews and evaporator panel. 1. Disconnect the electrical power to the ice machine 3.
  • Page 47 Section 3 Ice Machine Operation Water Dump Valve Important The water dump valve normally does not require The plunger and the inside of the enclosing tube removal for cleaning. To determine if removal is must be completely dry before assembly. necessary: 1.

  • Page 48: Removal From Service/Winterization

    Ice Machine Operation Section 3 Removal from Service/Winterization WATER COOLED CONDENSING UNIT 1. Perform steps 1-6 in previous column. GENERAL 2. Disconnect the incoming water and drain lines from Special precautions must be taken if the ice machine the water-cooled condenser. head section is to be removed from service for an extended period of time or exposed to ambient 3.

  • Page 49: Qf400/Qc700/Qf800

    Section 4 Ice Machine Sequence of Operation QF400/QC700/QF800 PRIOR TO START-UP AUTOMATIC SHUT-OFF When the toggle switch is placed in the “ice” position the 3A. Ice Run Out following must occur prior to starting an ice making Ice will build up in the bin until it contacts the bin level cycle.

  • Page 50: Qf2200

    Ice Machine Sequence of Operation Section 4 QF2200 PRIOR TO START-UP AUTOMATIC SHUT-OFF When the toggle switch is placed in the “ice” position the 3A. Ice Run Out following must occur prior to starting an ice making Ice will build up in the bin until it contacts the bin level cycle.

  • Page 51: Qf2300

    Section 4 Ice Machine Sequence of Operation QF2300 PRIOR TO START-UP AUTOMATIC SHUT-OFF When the toggle switch is placed in the “ice” position the 3A. Ice Run Out following must occur prior to starting an ice making Ice will build up in the bin until it contacts the bin level cycle.
  • Page 52 Ice Machine Sequence of Operation Section 4 THIS PAGE INTENTIONALLY LEFT BLANK Part No. 80-1214-3 Downloaded from www.Manualslib.com manuals search engine...

  • Page 53: Checklist

    Section 5 Troubleshooting Checklist Problem Possible Cause To Correct Ice machine does not operate. No electrical power to the ice machine. Replace the fuse/reset the breaker/turn on main power switch/plug cord into receptacle. Control Board fuse open ICE/OFF/CLEAN toggle switch set improperly. Move toggle switch to the ICE position.

  • Page 54: Safeguard Feature

    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 During a SafeGuard Mode the corresponding light (disch then back to ICE.

  • Page 55: Safeguard Modes

    Section 5 Troubleshooting SAFEGUARD MODES Analyzing Why SafeGuards May Stop the Ice Machine No Water According to the refrigeration industry, a high During the Freeze cycle if the water level probe opens or percentage of compressor failure are the result of remains open for more than 90 continuous seconds, the external causes.

  • Page 56: Motor Speed Sensor

    Troubleshooting Section 5 Gear Motor Speed Anytime the motor speed sensor detects the motor During the SafeGuard Mode the Motor Speed Sensor speed (rpm) is below the minimum range for light will continually flash to indicate a SafeGuard Mode. 3 continuous seconds, the ice machine will: The ice machine remains off until: 1.
  • Page 57 Section 5 Troubleshooting Temperature is Too High or Low QF400/QC700/QF800 The temperature sensor (thermistor) is mounted on the 4. After 30 minutes of compressor run time, the ice compressor discharge line. The temperature sensor machine will check the discharge line temperature. provides input to the control board.
  • Page 58 Troubleshooting Section 5 Temperature is Too High or Low QF2200 Only The temperature sensor (thermistor) is mounted on the 4. After 30 minutes of compressor run time, the ice liquid line. The temperature sensor provides input to the machine will check the liquid line temperature. control board.

  • Page 59: Gear Box Removal

    Section 5 Troubleshooting Gear Box Removal QF400 QC700/QF800 The evaporator and motor / gearbox are separate The evaporator and motor / gearbox are separate assemblies. Warranty procedures require replacement assemblies. Warranty procedures require replacement of the entire evaporator or motor /gearbox assembly. of the entire evaporator or motor /gearbox assembly.
  • Page 60 Troubleshooting Section 5 QF2200/QF2300 The evaporator and motor / gearbox are separate assemblies. Warranty procedures require replacement of the entire evaporator or motor /gearbox assembly. Separate components are not available, and field rebuilding during the warranty period is not allowed. 1.

  • Page 61: Evaporator Removal

    Section 5 Troubleshooting Evaporator Removal QF400 QC700/QF800 The evaporator and motor / gearbox are separate The evaporator and motor / gearbox are separate assemblies. Warranty procedures require replacement assemblies. Warranty procedures require replacement of the entire evaporator or motor /gearbox assembly. of the entire evaporator or motor /gearbox assembly.
  • Page 62 Troubleshooting Section 5 QF2200/QF2300 The evaporator and motor / gearbox are separate assemblies. Warranty procedures require replacement of the entire evaporator or motor /gearbox assembly. Separate components are not available, and field rebuilding during the warranty period is not allowed. 1.

  • Page 63: Energized Parts Charts

    Section 6 Electrical System Energized Parts Charts QF400/QC700/QF800 Control Relays Sensors Ice Making Length Water Gear Sequence Of Bin Level Temperature Float Of Time Level Motor Contactor Dump Gear Operation Probe Sensor Valve Probe Speed Coil Valve Motor Coil Sensing START-UP Not Sensing Sensing No...

  • Page 64: Qf2200

    Electrical System Section 6 Energized Parts Charts QF2200 Control Relays Sensors Ice Making Sequence Length Water Gear Bin Level Temperature Liquid Line Float Of Time Level Motor Dump Gear Probe Sensor Solenoid Valve Operation Probe Speed Valve Motor Valve Coil Sensing START-UP Not Sensing...

  • Page 65: Water Level Probes

    Section 6 Electrical System Energized Parts Charts QF2300 Control Relays Sensors Ice Making Liquid Line Length Water Sequence Of Bin Level Gear Motor Solenoid/ Float Of Time Level Gear Operation Probe Speed Equalization Dump Valve Valve Probe Motor Valve/ Coil Compressor START-UP Sensing for...

  • Page 66: Wiring Diagram Sequence Of Operation

    Electrical System Section 6 Wiring Diagram Sequence of L2 (N) Operation GROUND (21) QF400 RELAY Initial Start-Up or Start-Up After Automatic Shut-Off HIGH CONTACTOR RELAY PRESSURE COIL 1A. WATER FLUSH CUT-OUT (90) (95) (65) Immediately after placing the toggle 10 AMP GEARMOTOR FUSE (25)

  • Page 67: Electrical System

    Section 6 Electrical System Initial Start-Up or Start-Up After L2 (N) Automatic Shut-Off (cont.) GROUND 1B. WATER FILL (21) RELAY After 45 seconds the float valve solenoid is energized. HIGH CONTACTOR RELAY PRESSURE COIL CUT-OUT (90) (95) (65) 10 AMP GEARMOTOR FUSE (25)
  • Page 68 Electrical System Section 6 Freeze Cycle L2 (N) GROUND 2. FREEZE (21) The gear motor, compressor, RELAY condenser fan motor and water float valve solenoid remain energized as HIGH CONTACTOR RELAY PRESSURE the ice machine makes ice. The COIL CUT-OUT (90) (95) (65)
  • Page 69 Section 6 Electrical System Automatic Shut-Off L2 (N) GROUND 3A. ICE RUN OUT (21) Ice will build up in the bin until it RELAY contacts the bin level probe. After ice HIGH contacts the bin level probe for 30 CONTACTOR RELAY PRESSURE COIL...
  • Page 70 Electrical System Section 6 Automatic Shut-Off L2 (N) 3B. DRAIN EVAPORATOR GROUND (21) To allow water to drain from the RELAY evaporator, the dump valve energizes for 45 seconds, then de-energizes. HIGH CONTACTOR RELAY PRESSURE COIL CUT-OUT (90) (95) (65) 10 AMP GEARMOTOR FUSE...
  • Page 71 Section 6 Electrical System Automatic Shut-Off L2 (N) GROUND An 8 minute lockout starts when the (21) compressor de-energizes. When the RELAY ice drops away from the bin level probe the ice machine will begin an HIGH CONTACTOR RELAY PRESSURE initial start-up cycle, provided the “8 COIL CUT-OUT...

  • Page 72: Qc700/Qf800

    Electrical System Section 6 Wiring Diagram Sequence of L2 (N) GROUND Operation (21) QC700/QF800 RELAY Initial Start-Up or Start-Up After HIGH Automatic Shut-Off CONTACTOR RELAY PRESSURE COIL CUT-OUT (90) (95) (65) 1A. WATER FLUSH POTENTIAL RELAY 10 AMP Immediately after placing the toggle GEARMOTOR FUSE (25)
  • Page 73 Section 6 Electrical System Initial Start-Up or Start-Up After L2 (N) Automatic Shut-Off (cont.) GROUND 1B. WATER FILL (21) RELAY After 45 seconds the float valve solenoid is energized. HIGH CONTACTOR RELAY PRESSURE COIL CUT-OUT (90) (95) (65) POTENTIAL RELAY 10 AMP GEARMOTOR (25)
  • Page 74 Electrical System Section 6 Freeze Cycle L2 (N) GROUND 2. FREEZE (21) The gear motor, compressor, RELAY condenser fan motor and water float HIGH valve solenoid remain energized as CONTACTOR RELAY PRESSURE COIL the ice machine makes ice. The CUT-OUT (90) (95) (65)
  • Page 75 Section 6 Electrical System Automatic Shut-Off L2 (N) GROUND 3A. ICE RUN OUT (21) Ice will build up in the bin until it RELAY contacts the bin level probe. After ice contacts the bin level probe for 30 HIGH CONTACTOR RELAY PRESSURE continuous seconds the compressor...
  • Page 76 Electrical System Section 6 Automatic Shut-Off L2 (N) GROUND 3B. DRAIN EVAPORATOR (21) To allow water to drain from the RELAY evaporator, the dump valve energizes for 45 seconds, then de-energizes. HIGH CONTACTOR RELAY PRESSURE COIL CUT-OUT (90) (95) (65) POTENTIAL RELAY 10 AMP...
  • Page 77 Section 6 Electrical System Automatic Shut-Off L2 (N) GROUND An 8 minute lockout starts when the (21) compressor de-energizes. When the RELAY ice drops away from the bin level probe the ice machine will begin an HIGH initial start-up cycle, provided the “8 CONTACTOR RELAY PRESSURE...

  • Page 78: Qf2200

    Electrical System Section 6 Wiring Diagram Sequence of Operation GROUND QF2200 LIQUID LINE RELAY Initial Start-Up or Start-Up After SOLENOID (54) (53) Automatic Shut-Off RELAY CENTRIFUGAL 1A. WATER FLUSH SWITCH (25) Immediately after placing the toggle 7 AMP switch in “ICE”, the dump valve FUSE INTERNAL OVERLOAD...
  • Page 79 Section 6 Electrical System RFC2085 Initial Start-Up GROUND COMPRESSOR Remote Condensing Unit CRANKCASE HEATER (94) (95) 1A. WATER FLUSH The condensing unit is off. (96) (74) CONTACTOR HIGH PRESSURE COIL LOW PRESSURE CUT-OUT CUT-OUT CONTACTOR CONTACTOR CONTACTS CONTACTS FAN MOTOR CAPACITOR (50) (49)
  • Page 80 Electrical System Section 6 QF2200 Initial Start-Up GROUND 1B. WATER FILL LIQUID LINE After 45 seconds the water float valve SOLENOID RELAY (54) (53) solenoid is energized. When water contacts the water level probe the RELAY CENTRIFUGAL SWITCH liquid line solenoid valve energizes (25) and remains on throughout the 7 AMP...
  • Page 81 Section 6 Electrical System RFC2085 Initial Start-Up COMPRESSOR GROUND CRANKCASE 1B. WATER FILL HEATER (94) (95) The condensing unit is off. (96) (74) CONTACTOR LOW PRESSURE HIGH PRESSURE COIL CUT-OUT CUT-OUT CONTACTOR CONTACTOR FAN MOTOR CONTACTS CONTACTS CAPACITOR (50) (49) COMPRESSOR CAPACITOR (47)
  • Page 82 Electrical System Section 6 QF2200 GROUND Freeze Cycle 2. FREEZE LIQUID LINE SOLENOID RELAY The gear motor, liquid line solenoid (54) (53) valve and water float valve solenoid RELAY CENTRIFUGAL remain energized as the ice machine SWITCH (25) makes ice. The water float valve will 7 AMP open and close automatically to INTERNAL...
  • Page 83 Section 6 Electrical System RFC2085 Freeze Cycle COMPRESSOR GROUND CRANKCASE 2. FREEZE HEATER (94) (95) Refrigerant pressure exceeds the low pressure control setpoint. The (96) (74) contactor coil energizes and the CONTACTOR LOW PRESSURE HIGH PRESSURE COIL contacts close. The compressor and CUT-OUT CUT-OUT condenser fan motor energize and...
  • Page 84 Electrical System Section 6 QF2200 Automatic Shut-Off GROUND 3A. ICE RUN OUT LIQUID LINE Ice will build up in the bin until it RELAY SOLENOID (54) (53) contacts the bin level probe. After ice RELAY contacts the bin level probe for 30 CENTRIFUGAL SWITCH continuous seconds the liquid line...
  • Page 85 Section 6 Electrical System RFC2085 Automatic Shut-Off GROUND COMPRESSOR CRANKCASE When the refrigerant pressure is low HEATER (95) (94) enough to open the low-pressure switch, the contactor coil is de- (96) (74) energized and the compressor and CONTACTOR LOW PRESSURE condenser fan motor stop.
  • Page 86 Electrical System Section 6 QF2200 Automatic Shut-Off GROUND 3B. WATER DRAIN LIQUID LINE To allow water to drain from the RELAY SOLENOID (54) (53) evaporator, the dump valve energizes RELAY for 90 seconds, then de-energizes. CENTRIFUGAL SWITCH (25) An 8 minute lockout starts when the 7 AMP compressor de-energizes.
  • Page 87 Section 6 Electrical System QF2200 Automatic Shut-Off GROUND An 8 minute lockout starts when the LIQUID LINE compressor de-energizes. When the RELAY SOLENOID ice drops away from the bin level (54) (53) probe the ice machine will begin an RELAY CENTRIFUGAL initial start-up cycle, provided the “8 SWITCH...

  • Page 88: Qf2300

    Electrical System Section 6 Wiring Diagram Sequence of GROUND Operation LIQUID LINE QF2300 SOLENOID (54) (53) RELAY Initial Start-Up or Start-Up After (91) EQUALIZATION Automatic Shut-Off SOLENOID (57) (58) RELAY 1A. WATER FLUSH (25) Immediately after placing the toggle CENTRIFUGAL 7 AMP (22) SWITCH...
  • Page 89 Section 6 Electrical System RFC2385 Initial Start-Up GROUND COMPRESSOR Remote Condensing Unit CRANKCASE HEATER (94) (95) 1A. WATER FLUSH Immediately after placing the toggle (85) (96) (74) switch in “ICE”, the dump valve CONTACTOR solenoid, and gearbox are energized. HIGH PRESSURE COIL LOW PRESSURE CUT-OUT...
  • Page 90 Electrical System Section 6 QF2300 GROUND Initial Start-Up 1B. WATER FILL LIQUID LINE SOLENOID (54) (53) After 45 seconds the water float valve RELAY solenoid is energized. (91) EQUALIZATION SOLENOID (57) (58) RELAY (25) CENTRIFUGAL 7 AMP (22) SWITCH FUSE INTERNAL OVERLOAD START...
  • Page 91 Section 6 Electrical System RFC2385 GROUND COMPRESSOR Initial Start-Up CRANKCASE HEATER 1B. WATER FILL (94) (95) After 45 seconds the water float valve (85) (96) (74) solenoid is energized. CONTACTOR HIGH PRESSURE COIL LOW PRESSURE CUT-OUT CUT-OUT CONTACTOR CONTACTOR CONTACTS CONTACTS FAN MOTOR CAPACITOR...
  • Page 92 Electrical System Section 6 QF2300 Ice Machine Head Section Freeze Cycle GROUND 2. FREEZE LIQUID LINE SOLENOID When water contacts the water level (54) (53) probe the liquid line solenoid valve, RELAY (91) EQUALIZATION equalization valve, compressor and SOLENOID (57) (58) condenser fan motor energize.
  • Page 93 Section 6 Electrical System RFC2385 Freeze Cycle COMPRESSOR GROUND CRANKCASE 2. FREEZE HEATER (94) (95) The compressor and condenser fan (85) motor remain energized during the (96) (74) entire Freeze Cycle. CONTACTOR LOW PRESSURE HIGH PRESSURE COIL CUT-OUT CUT-OUT CONTACTOR CONTACTOR FAN MOTOR CONTACTS...
  • Page 94 Electrical System Section 6 QF2300 GROUND Automatic Shut-Off 3A. ICE RUN OUT LIQUID LINE SOLENOID (54) (53) Ice will build up in the bin until it RELAY contacts the bin level probe. After ice (91) EQUALIZATION SOLENOID contacts the bin level probe for 30 (57) (58) RELAY...
  • Page 95 Section 6 Electrical System RFC2385 Automatic Shut-Off COMPRESSOR GROUND CRANKCASE HEATER When the refrigerant pressure is low (95) (94) enough to open the low-pressure switch, the contactor coil is de- (85) (96) (74) energized and the compressor and CONTACTOR HIGH PRESSURE COIL condenser fan motor stop.
  • Page 96 Electrical System Section 6 QF2300 Automatic Shut-Off GROUND 3B. WATER DRAIN LIQUID LINE SOLENOID To allow water to drain from the (54) (53) evaporator, the dump valve energizes RELAY (91) EQUALIZATION for 90 seconds, then de-energizes. SOLENOID (57) (58) RELAY An 8 minute lockout starts when the (25) compressor de-energizes.
  • Page 97 Section 6 Electrical System QF2300 GROUND Automatic Shut-Off An 8 minute lockout starts when the LIQUID LINE SOLENOID compressor de-energizes. When the (54) (53) ice drops away from the bin level RELAY (91) EQUALIZATION probe the ice machine will begin an SOLENOID (57) (58)

  • Page 98: Wiring Diagrams

    Electrical System Section 6 Wiring Diagrams The following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice machine which you are servicing. Warning Always disconnect power before working on electrical circuitry. WIRING DIAGRAM LEGEND The following symbols are used on all of the wiring diagrams: Internal Compressor Overload (Some models have external compressor overloads)

  • Page 99: Qf400

    Section 6 Electrical System ICE MACHINE HEAD SECTION QF400 115V/60Hz/1Ph - 230V/50Hz/1Ph (Diagram Shown During Freeze Cycle) SEE SERIAL PLATE FOR VOLTAGE L2 (N) GROUND (21) RELAY HIGH RELAY CONTACTOR PRESSURE COIL CUTOUT (65) (90) (95) 10 AMP (25) FUSE GEARMOTOR RELAY RELAY...

  • Page 100: Qc700/Qf800

    Electrical System Section 6 QC700/QF800 115V/60Hz/1Ph - 230V/50Hz/1Ph (Diagram Shown During Freeze Cycle) SEE SERIAL PLATE FOR VOLTAGE L2 (N) GROUND (21) RELAY HIGH RELAY PRESSURE CONTACTOR CUTOUT COIL (90) (95) (65) POTENTIAL RELAY 10 AMP (25) FUSE RELAY RELAY (46) (21) (43)
  • Page 101 Section 6 Electrical System COMPRESSOR SECTION QC700/QF800 115/60/1 - 230/50/1 (Diagram Shown During Freeze Cycle) FAN MOTOR (AIR-COOLED ONLY) (42) COMPRESSOR “START” COMPRESSOR POTENTIAL RELAY (C5) (C2) (43) GEARMOTOR COMPRESSOR (45) “RUN” FAN MOTOR (C4) (AIR-COOLED ONLY) (61) (C1) (62) (56) (22) (44)

  • Page 102: Qf2200

    Electrical System Section 6 ICE MACHINE HEAD SECTION QF2200 115/60/1 - 230/50/1 (Diagram Shown During Freeze Cycle) SEE SERIAL PLATE FOR VOLTAGE L2 (N) (L1) GROUND (21) LIQUID LINE SOLENOID RELAY (54) (53) RELAY 10 AMP CENTRIFICAL FUSE SWITCH RELAY START RELAY (65)

  • Page 103: Rfc2085 (230V/60Hz/1Ph - 230/50/1)

    Section 6 Electrical System RFC2085 230V/60HZ/1PH - 230/50/1 (Diagram Shown During Freeze Cycle) COMPRESSOR CRANKCASE HEATER (94) (95) CONTACTOR (96) (74) COIL HIGH PRESSURE LOW PRESSURE CUTOUT CUTOUT FAN MOTOR CONTACTOR CONTACTOR CONTACTS CONTACTS RUN CAPACITOR (50) (49) COMPRESSOR RUN CAPACITOR (47) (46) (45)
  • Page 104 Electrical System Section 6 RFC2085 208-230V/60HZ/3PH (Diagram Shown During Freeze Cycle) COMPRESSOR CRANKCASE (95) HEATER (94) (96) (74) CONTACTOR HIGH PRESSURE LOW PRESSURE COIL CUTOUT CUTOUT CONTACTOR CONTACTS COMPRESSOR FAN MOTOR RUN CAPACITOR SV3013 6-42 Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

  • Page 105: Qf2300

    Section 6 Electrical System ICE MACHINE HEAD SECTION QF2300 115/60/1 - 230/50/1 (Diagram Shown During Freeze Cycle) SEE SERIAL PLATE FOR VOLTAGE (L1) GROUND LIQUID LINE SOLENOID (91) (54) (53) RELAY EQUALIZATION (51) SOLENOID (58) (57) RELAY (22) CENTRIFICAL SWITCH 7 AMP FUSE (22)
  • Page 106 Electrical System Section 6 RFC2385 230V/60HZ/1PH - 230/50/1 (Diagram Shown During Freeze Cycle) COMPRESSOR CRANKCASE HEATER (94) (95) CONTACTOR HIGH PRESSURE CUTOUT COIL (85) (96) (74) FAN MOTOR CONTACTOR CONTACTOR CONTACTS CONTACTS RUN CAPACITOR (50) (49) COMPRESSOR RUN CAPACITOR (47) (46) (45) OVERLOAD...

  • Page 107: Rfc2385 (208-230V/60Hz/3Ph)

    Section 6 Electrical System RFC2385 208-230V/60HZ/3PH (Diagram Shown During Freeze Cycle) COMPRESSOR CRANKCASE (95) HEATER (94) CONTACTOR HIGH PRESSURE COIL CUTOUT (85) (74) (96) L2 L3 CONTACTOR CONTACTS COMPRESSOR FAN MOTOR RUN CAPACITOR SV2108a 6-45 Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

  • Page 108: Control Board

    Electrical System Section 6 Control Board MAIN FUSE AC LINE VOLTAGE ELECTRICAL PLUG WATER LEVEL SENSOR YELLOW CLEAN LIGHT FULL BIN LIGHT GREEN GREEN DISCHARGE TEMP LIGHT COMPRESSOR LIGHT BIN LEVEL WATER SOLENOID LIGHT SENSOR GREEN WATER LEVEL LIGHT DUMP VALVE LIGHT SPEED LIGHT GREEN GEARMOTOR LIGHT...

  • Page 109: Component Specifications And Diagnostics

    Section 6 Electrical System Component Specifications and Diagnostics ICE/OFF/CLEAN TOGGLE SWITCH BIN LEVEL PROBE Function Function The switch is used to place the ice machine in ICE, OFF The bin level probe shuts off the ice machine after the or CLEAN mode of operation. bin fills with ice.
  • Page 110 Cause Replace bin level probe. Go to step 3. 3. Remove bin level probe from ice chute and clean with Manitowoc Ice Machine Cleaner and Sanitizer. Rinse well with fresh water, reinstall and monitor the Bin light. Control Board Cause...
  • Page 111 Section 6 Electrical System To verify coupling/auger RPM (revolutions per minute): MOTOR SPEED SENSOR Function 1. Verify line voltage is within 10% of ice machine nameplate rating when low RPM is suspected. The motor speed sensor verifies that the gearbox motor is rotating at the correct speed.
  • Page 112 Electrical System Section 6 WATER LEVEL PROBES Function The water level probe protects the compressor if water is not detected. Water contacting the probes will complete the circuit and energize the Water Level Probe light. There are two water level probes; one probe is connected to the circuit board and one probe is connected to the ice machine ground.
  • Page 113 Section 6 Electrical System 4. Disconnect water level probe from control board. Install jumper from control board “water level” terminal to ground. 5. Move the toggle switch from ICE to OFF to ICE position. Wait 45 seconds, then monitor the Water Level Probe light.

  • Page 114: Temperature Sensor

    4.44° – 10.0° 40° – 50° 26.10 – 19.90 ! Caution 10.0° – 15.55° 50° – 60° 19.90 – 15.31 Use only Manitowoc thermistors. 15.6° – 21.1° 60° – 70° 15.31 – 11.88 21.1° – 26.7° 70° – 80° 11.88 – 9.29 Check Procedure 26.7°...

  • Page 115: Control Board Relays

    Section 6 Electrical System MAIN FUSE CONTROL BOARD RELAYS Function Function The control board relays energize and de-energize The control board fuse stops ice machine operation if system components. electrical components fail, causing high amp draw. Specifications Specifications Relays are not field replaceable. There are four relays on The main fuse is 250 Volt, 10 amp.

  • Page 116: Water Float Valve

    Electrical System Section 6 WATER LEVEL CHECK WATER FLOAT VALVE Function The float valve maintains the correct water level. The water level must allow the water level probes to maintain The float valve maintains correct water level during the water contact throughout the Freeze cycle. The water Freeze cycle.

  • Page 117: High Pressure Control

    Section 6 Electrical System LOW PRESSURE CUT-OUT CONTROL (LPCO) HIGH PRESSURE CONTROL (HPCO) RFC2085/RFC2385 (QF2200/QF2300) ONLY Function Function The high pressure control stops the ice machine if Energizes and de-energizes the contactor coil when suction subjected to excessive high-side pressure. pressure rises above or falls below setpoint.

  • Page 118: Fan Cycle Control

    Electrical System Section 6 FAN CYCLE CONTROL Function Cycles the condenser fan motor on and off to maintain proper operating discharge pressure. The fan cycling control closes on an increase in discharge pressure and opens on a decrease in discharge pressure. Model Cut-In (Close) Cut-Out (Open)

  • Page 119: Compressor Electrical Diagnostics

    Section 6 Electrical System COMPRESSOR ELECTRICAL DIAGNOSTICS The compressor will not start or will trip repeatedly on overload. Check Resistance (Ohm) Values Determine if the Compressor is Seized NOTE: Compressor windings can have very low ohm Check the amp draw while the compressor is trying to values.
  • Page 120 Electrical System Section 6 Diagnosing Start Components If the compressor attempts to start, or hums and trips the 3. Check the relay coil. Measure the resistance overload protector, check the start components before between terminals: replacing the compressor. RFC2085/ CAPACITOR RFC2385 QF400 QC700/QF800...

  • Page 121: Diagnosing An Ice Machine That Will Not Run

    Section 6 Electrical System Diagnosing An Ice Machine That Will Not Diagnosing A Condensing Unit That Will Not Run QF400/QC700/QF800/QF2200/QF2300 RFC2085/RFC2385 If the ice machine water pump is not energized refer to Warning “Ice Machine Head Section Will Not Run”. High (line) voltage is applied to the control board 1.
  • Page 122 Electrical System Section 6 THIS PAGE INTENTIONALLY LEFT BLANK 6-60 Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

  • Page 123: Refrigeration System

    Section 7 Refrigeration System Tubing Schematic QF400/QC700/QF800 DRIER EXPANSION VALVE EVAPORATOR RECEIVER (QF400) CONDENSER (AIR OR WATER) COMPRESSOR SV3082 Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

  • Page 124: Qf2200/Rfc2085

    Refrigeration System Section 7 QF2200/RFC2085 Condensing Unit SUCTION LINE COMPRESSOR FILTER CONDENSER HEAD PRESSURE CONTROL VALVE S TRAP REQUIRED 21’ OR GREATER RISE Ice Machine Head Section SUCTION LIQUID LINE SHUT-OFF SHUT-OFF VALVE VALVE LLSV HEAT EXCHANGER EVAPORATOR DRIER CHECK VALVE RECEIVER SERVICE VALVE...

  • Page 125: Qf2300/Rfc2385

    Section 7 Refrigeration System QF2300/RFC2385 Condensing Unit SUCTION LINE COMPRESSOR FILTER CONDENSER HEAD PRESSURE SUCTION CONTROL ACCUMULATOR VALVE S TRAP REQUIRED 21’ OR GREATER RISE Ice Machine Head Section LIQUID LINE SUCTION SHUT-OFF SHUT-OFF VALVE VALVE LLSV EVAPORATOR DRIER EQUALIZATION VALVE CHECK VALVE RECEIVER...

  • Page 126: Refrigeration System Diagnostics

    Refrigeration System Section 7 Refrigeration System Diagnostics General When analyzing the refrigeration system, it is important to 2. An ice machine that is low on refrigerant may cause understand that different refrigeration component a good expansion valve to starve. If a service malfunctions may cause very similar symptoms.

  • Page 127: Before Beginning Service

    Section 7 Refrigeration System ICE PRODUCTION/QUALITY CHECK BEFORE BEGINNING SERVICE Ice machines may experience operational problems only Quality Check during certain times of the day or night. A machine may Ice quality will vary with ambient and water function properly while it is being serviced, but temperatures, and is measured by the amount of excess malfunctions later.

  • Page 128: Installation/Visual Inspection Checklist

    Adjust float valve outlet (see “Water Level Check”). SAFEGUARDS 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. Refer to Section 5 to determine if a SafeGuard has stopped the ice machine.

  • Page 129: Analyzing Discharge Pressure During Freeze Or Harvest Cycle

    Defective fan cycle control (QC700/QF800 only) Improper refrigerant charge Overcharged Non-condensables in system Wrong type of refrigerant Other Non-Manitowoc components in system High side refrigerant lines/component restricted (before mid-condenser) Defective head pressure control valve (RFC2085/RFC2385 only) Discharge Pressure Low Checklist Possible Cause Check/Correct Improper installation See “Installation/Visual Inspection Checklist”...

  • Page 130: Analyzing Suction Pressure

    (See “Freeze Cycle Discharge Pressure High Checklist” Improper refrigerant charge Overcharged Wrong type of refrigerant Non condensables in system Other Non-Manitowoc components in system TXV flooding (check bulb mounting) Defective compressor Suction Pressure Low Checklist Possible Cause Check/Correct Improper installation See “Installation/Visual Inspection Checklist”...

  • Page 131: Equalization Valve

    As the size of the leak increases the audible indication becomes more apparent. Refer to the Parts Manual for proper valve application. When replacement is necessary, use only “original” Manitowoc replacement parts. Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com...

  • Page 132: Headmaster Control Valve

    2. Determine if the head pressure is high or low in control valves with special settings. Replace defective relationship to the outside temperature. (Refer to the headmaster control valves only with “original” Manitowoc proper “Operational Pressure Chart”) If the air replacement parts.

  • Page 133: Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts

    Section 7 Refrigeration System Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts These charts are used as guidelines to verify correct ice QF400 SELF-CONTAINED AIR COOLED machine operation. Accurate collection of data is NOTE: These characteristics may vary depending on essential to obtain the correct diagnosis. operating conditions.

  • Page 134: Qc700 Self-Contained Air Cooled

    Refrigeration System Section 7 QC700 SELF-CONTAINED AIR COOLED QC700 SELF-CONTAINED WATER COOLED NOTE: These characteristics may vary depending on NOTE: These characteristics may vary depending on operating conditions. operating conditions. 24 Hour Ice Production 24 Hour Ice Production Air Temp. Water Temperature °F/°C Air Temp.

  • Page 135: Qf800 Self-Contained Air Cooled

    Section 7 Refrigeration System QF800 SELF-CONTAINED AIR COOLED QF800 SELF-CONTAINED WATER COOLED NOTE: These characteristics may vary depending on NOTE: These characteristics may vary depending on operating conditions. operating conditions. 24 Hour Ice Production 24 Hour Ice Production Air Temp. Water Temperature °F/°C Air Temp.

  • Page 136: Qf2200/Rfc2085 Remote Air Cooled

    Refrigeration System Section 7 QF2200/RFC2085 REMOTE AIR COOLED QF2300/RFC2385 REMOTE AIR COOLED NOTE: These characteristics may vary depending on 24 NOTE: These characteristics may vary depending on 24 Hour Ice Production Hour Ice Production 24 Hour Ice Production 24 Hour Ice Production Air Temp.

  • Page 137: Refrigerant Recovery/Evacuation And Recharging

    Do not purge refrigerant to the atmosphere. Capture manufacturer’s recommendations. refrigerant using recovery equipment. Follow the Important Manitowoc Ice Inc. assumes no responsibility for the use of contaminated refrigerant. Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company.
  • Page 138 1. Place the toggle switch in the OFF position and Replace the liquid line drier before evacuating and disconnect all power to the ice machine and recharging. Use only a Manitowoc (OEM) liquid line condensing unit. filter drier to prevent voiding the warranty.
  • Page 139 3. Open the high side manifold gauge valve, and backseat the high side access valve. The charge is critical on all Manitowoc ice machines. Use a scale or a charging cylinder to 4. Open the charging cylinder and add the proper ensure the proper charge is installed.
  • Page 140 Refrigeration System Section 7 Remote Charging Procedures (QF2200/QF2300) 1. Be sure the toggle switch is in the OFF position. 2. Close the vacuum pump valve and the low side manifold gauge valve. 3. Open the refrigerant cylinder and add the proper refrigerant charge (shown on nameplate) into the system high side (receiver service valve and discharge line quick-connect fitting).

  • Page 141: System Contamination Clean-Up

    If a refrigerant test kit indicates harmful levels of Important contamination, or if a test kit is not available, inspect the Manitowoc Ice, Inc. assumes no responsibility for compressor oil. the use of contaminated refrigerant. Damage 1. Remove the refrigerant charge from the ice resulting from the use of contaminated refrigerant is machine.
  • Page 142 Refrigeration System Section 7 Severe System Contamination Cleanup Procedure Mild System Contamination Cleanup Procedure 1. Replace any failed components. 1. Remove the refrigerant charge. 2. If the compressor is good, change the oil. 2. Remove the compressor. 3. Replace the liquid line drier. 3.

  • Page 143: Replacing Pressure Controls Without Removing Refrigerant Charge

    Section 7 Refrigeration System REPLACING PRESSURE CONTROLS WITHOUT 9. Follow the normal evacuation procedure, except REMOVING REFRIGERANT CHARGE replace the evacuation step with the following: This procedure reduces repair time and cost. Use it Important when any of the following components require replacement, and the refrigeration system is operational Dry nitrogen is recommended for this procedure.
  • Page 144 Refrigeration System Section 7 SV1406 Using Pinch-Off Tool 7-22 Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

  • Page 145: Filter-Driers

    The difference between Manitowoc driers and off-the- must be installed on the inlet side of the suction filter to shelf driers is in filtration. Manitowoc driers have dirt- allow pressure drop readings to be obtained. retaining filtration, with fiberglass filters on both the inlet and outlet ends.

  • Page 146: Refrigerant Definitions

    Refrigeration System Section 7 Reclaim REFRIGERANT DEFINITIONS Recover To reprocess refrigerant to new product specifications (see below) by means which may include distillation. A To remove refrigerant, in any condition, from a system chemical analysis of the refrigerant is required after and store it in an external container, without necessarily processing to be sure that product specifications are testing or processing it in any way.
  • Page 147 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...
  • Page 148 • Improve Your Service Techniques • Network with Your Peers • 4 1/2 Days of Intensive Training on Manitowoc Ice Machines • Extensive “Hands On” Training on a Variety of Equipment • Breakfast, Lunch and Hotel Room Included with Tuition •...
  • Page 149 Section 7 Refrigeration System 3. Recovered or Recycled Refrigerant REFRIGERANT RE-USE POLICY Manitowoc recognizes and supports the need for proper • Must be recovered or recycled in accordance handling, re-use, and disposal of, CFC and HCFC with current local, state and federal laws.
  • Page 150 Refrigeration System Section 7 THIS PAGE INTENTIONALLY LEFT BLANK 7-26 Part No. 80-1214-3 Revised 8/2003 Downloaded from www.Manualslib.com manuals search engine...

This manual is also suitable for:

Qf2200Qc0700Qf0800Qf2300

Table of Contents