Movincool Classic Plus 14 Service Manual
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Movincool Classic Plus 14 Service Manual

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M A N U A L
S E R V I C E
CLA SSIC P LU S 1 4

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Summary of Contents for Movincool Classic Plus 14

  • Page 1 M A N U A L S E R V I C E CLA SSIC P LU S 1 4...

  • Page 2: Foreword

    FOREWORD This manual has been published to service the MovinCool Classic Plus 14. Please use this service manual only when servicing the Classic Plus 14. DEFINITION OF TERMS WARNING: Describes precautions that should be observed in order to prevent injury to the user during installation or unit operation.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS FOREWORD ....................i DEFINITION OF TERMS ................i GENERAL PRECAUTIONS ................ i TABLE OF CONTENTS ................iii GENERAL DESCRIPTION ................. 1 CONSTRUCTION, SPECIFICATIONS, & DATA ........3 REFRIGERANT SYSTEM ................9 ELECTRICAL SYSTEM................13 TROUBLESHOOTING & REPAIR ............19...

  • Page 6: General Description

    (condenser) to exhaust exchanged heat to the out- doors. Unlike conventional air conditioners, the MovinCool Spot Cooling System is a spot cooler which directs cool air to particular areas or objects. MovinCool Spot Cooling Systems have the following...
  • Page 7 GENERAL DESCRIPTION...

  • Page 8: Construction, Specifications & Data

    CONSTRUCTION, SPECIFICATIONS & DATA Cool Air Duct Exhaust Air Duct Centrifugal Fan Capillary Tube Housing for Condenser Fan Condenser Caster with Brake Compressor Drain Switch Control Box Caster Construction of Classic Plus 14...
  • Page 9 CONSTRUCTION, SPECIFICATIONS & DATA Evaporator Fan Control Box Control Panel Cool Air Ducts Upper Panel Fan Motor Side Panel Front Panel Condenser Fan Air Filter(condenser) Air Filter Evaporator Capillary Tube (evaporator) Accumulator Compressor Air Filter (condenser) Drain Tank Condenser Power Cord Casters Base Panel Construction Diagram...
  • Page 10 CONSTRUCTION, SPECIFICATIONS & DATA Basic Construction The MovinCool Spot Cooling System is compact in construction because the con- denser and the evaporator are enclosed in one unit. The interior is divided into three sections. The upper front face is equipped with the evaporator, while the lower front face contains the drain tank.
  • Page 11 CONSTRUCTION, SPECIFICATIONS & DATA Rating Conditions dry bulb ....................95 F (35 wet bulb ....................83 F (28.3 humidity ....................(60%) Specifications power frequency ..................60Hz line voltage ..................... single phase 115 V power consumption ................1.41 Kw current consumption ................12.3 Amps power factor ....................95% starting current ..................
  • Page 12 CONSTRUCTION, SPECIFICATIONS & DATA 26.5 21.1 16.6 20.6 12.5 25.6 19.4 Exterior Dimensions...

  • Page 13: Wet Bulb

    CONSTRUCTION, SPECIFICATIONS & DATA @ 115V @ 115V 4.0 (15.9) 14 (25.2) 3.6 (14.3) 12 (21.6) 10 (18.0) 3.2 (12.7) 8 (14.4) 2.8 (11.1) 6 (10.8) 2.4 (9.5) Relative Humidity of Inlet Air (%) 45 (113) Cool Air Temperature Difference Curve 40 (104) 35 (95) @ 115V...

  • Page 14: Refrigerant System

    REFRIGERANT SYSTEM 1. The component parts of the refrigerant system include the following: • Accumulator • Capillary tube • Compressor • Evaporator • Condenser These parts are all connected by copper tubing. All the connections have been brazed. Condenser Evaporator Capillary Tube Compressor Accumulator...

  • Page 15: Condenser (Hi Speed)

    REFRIGERANT SYSTEM Compressor The compressor used for the unit is hermeti- cally sealed. The compressor and the com- pressor motor are in one casing. A. Compressor Construction The construction of a rotary type com- pressor is divided into two mechanisms - the drive mechanism (compressor motor) and the compression mechanism (com- pressor).
  • Page 16 REFRIGERANT SYSTEM Capillary Tube The capillary tube is a long thin tube utilizing High Temp. / High Press. line flow resistance to serve as an expansion Liquid Refrigerant valve. The length and the inner diameter of the capillary tube are determined by to the capacity of refrigeration system, operating conditions, and the amount of refrigerant.
  • Page 17 REFRIGERANT SYSTEM Condenser Inlet Pipe Evaporator Inlet Pipe Compressor Capillary Tube Discharge Pipe Evaporator Outlet Pipe Condenser Outlet Pipe Connecting Pipe (evaporator to compressor) Connecting Compressor Tube (condenser Suction Pipe to capillary tube) (insulated) Refrigerant System Piping...

  • Page 18: Electrical System

    Ground Capacitor for Fan J8 (AUX1) Auxiliary Connector (CPK3) Capacitor for Compressor AUX2 Auxiliary Connector (Not Used) Relay Board Relay Board Fuse DIP Switch Terminal Block Compressor Capacitor Fan Motor Capacitor Electrical System and Control Box for Classic Plus 14...
  • Page 19 ELECTRICAL SYSTEM Basic Operation of Classic Plus 14 Electrical Circuit There are two basic components used to control the operation of the Classic Plus 14 Electrical System: • Control Panel Assembly • Control Box The Control Panel Assembly contains the Control Panel, Control Board (with inputs for the freeze and room temperature thermistors), drain switch, and a microprocessor.
  • Page 20 ELECTRICAL SYSTEM Control Box A. Capacitors The capacitors are used to temporarily Relay Board boost the power output available to the Relay Board Fuse DIP Switch fan motor and the compressor at start-up. The specifications of each capacitor are Terminal Block listed below: CAPACITOR VOLTAGE...

  • Page 21: Compressor Overload Relay

    ELECTRICAL SYSTEM Fan Motor The fan motor is a single phase, induction type two-speed motor. The motor rotates fans on the evaporator side and the con- denser side at the same time. Specifications: Rated Voltage: 115 volts 60 Hz Rated Output – High – 243 watts Low –...
  • Page 22 Temperature Set Point. Condensate Pump Kit (optional) The Classic Plus 14 model comes standard with a drain tank, which collects the water that forms on the evaporator during normal cooling operation. If the unit is required to operate continuously without periodic emptying of this tank, a condensate pump may be needed.

  • Page 23: Temperature Control

    Automatic Restart After Power Interruption The program within the microprocessor of the Classic Plus 14 contains a feature that will automatically restart the unit after power is lost and then regained. The unit also has memory in order to return itself back to the operating mode (including temperature set point) it was in prior to the loss of power.

  • Page 24: Troubleshooting & Repair

    TROUBLESHOOTING AND REPAIR Before troubleshooting the system, the following inspection should be performed. 1. Inspection of Power Source Voltage Check the voltage of the power source. Single phase 115 volts (60Hz) Check the operation and condition of the fuse or circuit breaker in the power source. 2.
  • Page 25 TROUBLESHOOTING AND REPAIR In case of trouble, perform the following inspection before disassembly. 5. Inspection of Spine Fins To inspect the spine fins of either the evaporator or condenser you must remove the air filters. After removal of the air filters, inspect the spine fins for any dirt, dust, lint, or debris that may have caused poor cooling performance of the unit.
  • Page 26 TROUBLESHOOTING AND REPAIR 8. Disassembly 1. Control panel 10. Front panel 2. Upper panel 11. Blower housing (evaporator) 3. Right side panel 12. Drain pan 4. Air filter 13. Left side panel 5. Blower housing (condenser) 14. Drain tank 6. Condenser fan 15.
  • Page 27 TROUBLESHOOTING AND REPAIR A. Remove Drain Tank. Removal of Drain Tank B. Remove (8) screws from the ducts, then remove the 2-ducts. Removal of Duct Screws and Ducts C. Remove (4) screws from the Service Panel. Removal of Service Panel Screws D.
  • Page 28 TROUBLESHOOTING AND REPAIR E. Remove remaining (13) screws and the back panel. Removal of Back Panel Screws Remove (14) screws from the Top Panel. 4 (backside) Removal of Top Panel Screws G. Top Panel (4). Removal of Top Panel...

  • Page 29: Relay Board

    TROUBLESHOOTING AND REPAIR 9. Removal of Electrical Parts J8 (AUX1) AUX2 IOLF Attachment Plug OLC Overload Relay of Compressor Terminal Block Full Drain Warning Switch Control Board THS Freeze Protection Thermistor Relay Board RTH Room Thermistor Fan Motor SCP Short Circuit Plate Compressor Motor Ground Capacitor for Fan...
  • Page 30 TROUBLESHOOTING AND REPAIR To Terminal Block Pin #2 Compressor To Fan Motor (R-Terminal) Overload Relay (High Speed) To Fan Motor Relay Board Ground To Terminal Block (Low Speed) (not used) (T-Terminal) DIP Switch Temperature Scale Display Switch ˚C ˚F Relay Board Fuse Fan Mode Control Switch STOP OPERATE...
  • Page 31 TROUBLESHOOTING AND REPAIR 10. Removal of Blower Assembly ➇ ➀ ➂ ➄ ➆ ➁ ➃ ➅ 1. Condenser fan 5. Partition plate 2. Blower housing (condenser) 6. Evaporator fan 3. Fan motor 7. Blower housing (evaporator) 4. Motor bracket 8. Air flow guide Disassembly of Blower...
  • Page 32 TROUBLESHOOTING AND REPAIR A. Loosen the set screw using an allen wrench and then remove the centrifugal fan. Removal of Centrifugal Fan B. Remove the two (2) nuts on the inside of the housing in the locations shown. A - NUT Removal of Blower Housing C.
  • Page 33 TROUBLESHOOTING AND REPAIR D. Remove the centrifugal fan by loosening the set screw on the shaft. Remove the fan motor, by loosening “A” nuts. Removal of Fan Motor E. Remove (7) screws from Left Side Panel. Removal of Left Side Panel Screws Remove (7) screws from Right Side Panel.
  • Page 34 TROUBLESHOOTING AND REPAIR G. Remove (2) screws from Control Panel Assembly Right Stay. Removal of Right Stay Screws H. Remove (2) screws from Control Panel Assembly Left Stay. Removal of Left Stay Screws Disconnect the following connectors from the control board: Wire Harness, Relay Board to Control Board J201 (10-pin) Drain Tank Switch J103 (2-pin)
  • Page 35 TROUBLESHOOTING AND REPAIR J. Remove the five (5) screws from the control board on the control panel assembly. Remove the control board. Removal of Control Board 11. Inspection of Capacitor (Fan Motor and Compressor) Ohmeter Method – Set the ohmeter to the 100K Ω...
  • Page 36 TROUBLESHOOTING AND REPAIR 13. Inspection of Drain Switch Check for continuity between terminals 1 and 2. TOP OF Continuity should exist. With switch depressed, BASE continuity should not exist between terminals 1 PLATE and 2. If continuity is not as specified above, replace the switch.
  • Page 37 TROUBLESHOOTING AND REPAIR 18. Inspection In most cases, the probable cause for insufficient cooling is a clogged system, leakage or an incorrect amount of refrigerant. In such cases, inspect the system according to the following procedure. A. Inspection of Clogged System Check the component parts of the refrigerant system, including piping, that could be clogged with refrigerant.
  • Page 38 TROUBLESHOOTING AND REPAIR metal using sand paper and by cleaning thoroughly with a solvent such as Trichlene. • USE OF DRY NITROGEN GAS During brazing, the inside of the pipe under- goes an oxidative reaction due to the brazing flame. Introduce dry nitrogen gas (1 liters/ min.;...
  • Page 39 TROUBLESHOOTING AND REPAIR B. Removal of Refrigeration Cycle Components CAUTION: Before any refrigeration cycle component can be replaced, it is necessary to recover the refriger- ant using standard recovery procedures and equipment. To prevent oxidation, dry nitrogen should be conducted (flow rate 1 liters/min) through the pinch- off tube during any brazing operation.
  • Page 40 TROUBLESHOOTING AND REPAIR 20. Charging the System with R-22 Refrigerant Always ensure that the refrigerant system has been properly evacuated before charging with the specified amount of R-22. WARNING: When handling refrigerant (R-22), the following precautions should always be observed: •...
  • Page 41 TROUBLESHOOTING AND REPAIR (3) Connect the charging hoses (red - high pressure side, blue - low pressure side) of the gauge manifold to the process tube fittings. NOTE: Connect the hoses using care not to mistake the high pressure side for the low pressure side and vice versa.
  • Page 42 TROUBLESHOOTING AND REPAIR D. Checking Gas Leak (1) Remove the charging hose (green) from the vacuum pump, and connect the hose to the refrigerant cylinder (R22). (2) Loosen the nut on the gauge manifold side of the charging hose (green). Evacuating Air Inside Charging Hose (3) Open the high pressure valve of the gauge manifold.
  • Page 43 TROUBLESHOOTING AND REPAIR 21. Refrigerant Charging Work A. Refrigerant Charging (1) Remove the charging hose (green) from the vacuum pump, and connect it to the refrigerant cylinder (R-22). (2) Loosen the nut on the gauge manifold side of the charging hose (green). Open the valve of the charging hose (green).
  • Page 44 TROUBLESHOOTING AND REPAIR B. Removal of Gauge Manifold (1) Crimp the pinch-off tube with a pinch-off tool. (2) Remove the gauge manifold and the process tube fitting. Crush the end of the pinch-off tube. (3) Braze the end of the pinch-off tube. (4) Ensure that a gas leak is not present at the pinched off portion and the brazed end.
  • Page 45 TROUBLESHOOTING AND REPAIR 26. Schematic...
  • Page 46 DSCA P/N: LA990009-0379...

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