Movincool Office Pro 18 Service Manual
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Movincool Office Pro 18 Service Manual

Movincool Office Pro 18 Service Manual

Portable cooling
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M A N U A L
S E R V I C E
OFFICE PRO 18

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Summary of Contents for Movincool Office Pro 18

  • Page 1 M A N U A L S E R V I C E OFFICE PRO 18...
  • Page 2 All rights reserved. This book may not be reproduced or copied, in whole or in part, without the written permission of the publisher. DENSO SALES CALIFORNIA, INC. reserves the right to make changes without prior notice. MovinCool is a registerd trademark of DENSO Corporation.

  • Page 3: Foreword

    FOREWORD This manual has been published to service the MovinCool Office Pro 18. Please use this service manual only when servicing the Office Pro 18. DEFINITION OF TERMS WARNING: Describes precautions that should be observed in order to prevent injury to the user during installation or unit operation.

  • Page 5: 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 7: General Description

    (condenser) to exhaust exchanged heat to the out- doors. Unlike conventional air conditioners, the MovinCool Spot Cooling System is a spot cooler EVAPORATOR which directs cool air to particular areas or objects.
  • Page 8 GENERAL DESCRIPTION...

  • Page 9: Construction, Specifications, & Data

    CONSTRUCTION AND SPECIFICATIONS EVAPORATOR CONDENSER CAPILLARY TUBE ACCUMULATOR COMPRESSOR Construction of Office Pro 18...
  • Page 10 CONSTRUCTION AND SPECIFICATIONS EVAPORATOR FAN TOP PANEL CONTROL PANEL EXHAUST AIR VENT RIGHT HANDLE COOL AIR VENT SIDE PANEL FRONT PANEL FAN MOTOR CAPILLARY TUBE EVAPORATOR COMPRESSOR ACCUMULATOR DRAIN TANK CONDENSER CASTER POWER CORD Construction Diagram...
  • Page 11 CONSTRUCTION AND SPECIFICATIONS 1. Basic Construction The MovinCool Spot Cooling System is compact in construction because the condenser 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 12 CONSTRUCTION AND SPECIFICATIONS Rating Conditions dry bulb ..............95 F (35 wet bulb ..............83 F (28.2 humidity ..............(60%) Specifications power frequency ........... 60Hz line voltage ............single phase 115 V power consumption ..........1.7 Kw current consumption ..........15.6 Amps power factor ............
  • Page 13 CONSTRUCTION AND SPECIFICATIONS ø11.575 4.60 2.20 12.40 20.67 16.50 27.40 19.30 Exterior Dimensions (units: inches)

  • Page 14: Wet Bulb

    DATA @ 115V @ 115V 1 4 (2 5 .2 ) 4.3 (17) 1 3 (2 3 .4 ) 4.0 (16) 1 2 (2 1 .6 ) 1 1 (1 9 .8 ) 3.78 (15) 1 0 (1 8 .0 ) 3.5 (14) 9(1 6.2) 8(1 4.4)

  • Page 15: Refrigerant System

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

  • Page 16: Compressor

    REFRIGERANT SYSTEM 2. Compressor The compressor used for the unit is hermetically sealed. The compressor and the compressor motor are in one casing. A. Compressor Construction The construction of a rotary type compressor is divided into two mechanisms. The drive mechanism (compressor motor) and the compression mechanism (compressor).
  • Page 17 REFRIGERANT SYSTEM 4. Capillary Tube The capillary tube is a long thin tube utilizing line HIGH TEMP. / HIGH PRESSURE flow resistance to serve as an expansion valve. LIQUID REFRIGERANT The length and the inner diameter of the capillary tube are determined by the capacity of the refrigeration system, specified operating condi- tions, and the amount of refrigerant.
  • Page 18 REFRIGERANT SYSTEM EVAPORATOR CONDENSER CAPILLARY TUBE ACCUMULATOR COMPRESSOR Refrigerant System Piping...

  • Page 19: Electrical System

    Capacitor for Compressor AUX1 Auxiliary Connector IOLF Internal Overload Relay of Fan Motor AUX2 Auxillary Connector / Jumper RELAY BOARD RELAY BOARD FUSE DIP SWITCH TERMINAL BLOCK COMPRESSOR CAPACITOR FAN CAPACITOR Electrical System and Control Box for Office Pro 18...
  • Page 20 ELECTRICAL SYSTEM 1. Basic Operation Of The Office Pro 18 Electrical Circuit There are two basic components used to control the operation of the Office Pro 18 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 21 ELECTRICAL SYSTEM 2. Control Box A. Capacitors The capacitors are used to temporarily boost the power output available to the fan motor and the compressor at start-up. RELAY BOARD The specifications of each capacitor are RELAY BOARD FUSE DIP SWITCH listed below: CAPACITOR VOLTAGE...

  • Page 22: Output

    ELECTRICAL SYSTEM 3. Fan Motor The fan motor is a single phase, induction type two-speed motor. The motor rotates fans on the evaporator side and the condenser side at the same time. Specifications: Rated Voltage: 115 volts 60 Hz Rated Output: High –...
  • Page 23 Off” button. The unit will return to the previous Temperature Set Point. 8. Condensate Pump Kit (optional) The Office Pro 18 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 24: Temperature Control

    ELECTRICAL SYSTEM 10. Compressor Protection There is a Time Delay program within the microprocessor. This prevents a heavy load from being applied on the Compressor Motor when restarting the unit (Cool Mode) after a very short period of time. This “delay”...

  • Page 25: Troubleshooting & Repair

    SET TEMP CLOCK/TIMER When unit disengages the compressor while the condensate pump is discharg- ing water. FAN ON/OFF Lowest temperature set point START TIME END TIME Highest temperature set point SET CLOCK COOL ON/OFF PROGRAM Office Pro 18 OP18 Control Panel...
  • Page 26 TROUBLESHOOTING AND REPAIR 5. Troubleshooting Chart Trouble Probable Cause Trouble Probable Cause Unit does not operate at all • Check for Power at Insufficient Cooling (cont’d) • Clogged plate fins Receptacle • Set point temperature exceeds • Check for Power at Terminal room temperature Board •...
  • Page 27 TROUBLESHOOTING AND REPAIR In case of trouble, perform the following inspection before disassembly. 6. Inspection of Plate Fins To inspect the plate fins of either the evaporator or condenser you must remove the air filters. After removal of the air filters, inspect the plate fins for any dirt, dust, lint, or debris that may have caused poor cooling performance of the unit.
  • Page 28 TROUBLESHOOTING AND REPAIR 8. Inspection of Cooling Capacity Measure the difference in temperature between the inlet of the evaporator and the cool air vent. If the difference is out of the range given in the graphs on THERMOMETER page 8, proceed with the remedy suggested in the troubleshooting chart on page 19.
  • Page 29 TROUBLESHOOTING AND REPAIR 9. Disassembly Control Panel Top Front Panel Right Handle Upper Rear Panel Right Panel Air Outlet Grille Left Handle Filter Element Front Panel Filter Assy Side Panel Filter Assy Filter Element Room Thermistor Left Panel Blower Housing (evap.) Blower Housing Drain Pan Assy Condenser Fan...
  • Page 30 TROUBLESHOOTING AND REPAIR A. Remove drain tank. Removal of Drain Tank B. Remove six (6) screws from upper front panel. Removal of Upper Front Panel Screws C. Slide upper front panel forward and remove. Removal of Upper Front Panel...
  • Page 31 TROUBLESHOOTING AND REPAIR D. Louver can be removed from upper front panel by unsnapping it rearward. Removal of Air Outlet Louver E. Remove four (4) screws from service panel. Removal of Service panel Disconnect the three (3) lead wires of the power cord.

  • Page 32: Removal Of Electrical Parts

    TROUBLESHOOTING AND REPAIR G. Remove thirteen (13) screws from rear panel. H. Remove ten (10) screws (eight shown) from upper rear panel and two (2) screws on top. Removal of Back and Upper Rear panel Screws 10. Removal of Electrical Parts AC115V 60Hz IOLC...
  • Page 33 TROUBLESHOOTING AND REPAIR TO FAN MOTOR TO TERMINAL BLOCK (LOW SPEED) (T-TERMINAL) TO FAN MOTOR TO COMPRESSOR (HIGH SPEED) TO TERMINAL BLOCK (R-TERMINAL) RELAY BOARD GROUND (NOT USED) DIP SWITCH RELAY BOARD FUSE TEMPERATURE SCALE DISPLAY SWITCH ˚C - ˚F FAN MODE CONTROL SWITCH STOPS OPERATE...
  • Page 34 TROUBLESHOOTING AND REPAIR 11. Removal of Blower Assembly Control Panel Right Stay Control Panel Left Stay Air Diverter Evaporator Fan Casing Evaporator Fan Motor Stay Middle Frame Sub-Assy Fan Motor Condenser Fan Casing Assy Condenser Fan Ring Sub-Assy Disassembly of Blower...
  • Page 35 TROUBLESHOOTING AND REPAIR A. Loosen the set screw using an allen wrench and then remove the centifugal fan. Removal of Centrifugal Fan B. Remove the two (2) nuts “A” on the inside of the housing in the locations shown. Then remove the blower housing (condenser).
  • Page 36 TROUBLESHOOTING AND REPAIR E. Remove seven (7) screws from left side panel. Removal of Screws for Left Side Panel Remove nine (9) screws from right side panel. Removal of Screws for Right Side Panel G. Remove two (2) screws from the control panel stay.
  • Page 37 TROUBLESHOOTING AND REPAIR Disconnect the following connectors from the control board: (1) Wire Harness, Relay Board to Control Board J201 (10-pin) (2) Room Temperature Thermistor J101 (2-pin) (3) Freeze Thermistor J102 (2-pin with black tape) (4) Drain Tank Switch J103 (2-pin) (5) Auxillary 2 / J104 - Jumper NOTE: Mark each of the 2-pin connectors with a Removal of Connectors from Control Panel...
  • Page 38 TROUBLESHOOTING AND REPAIR 14. Inspection of Drain Switch Check for continuity between terminals 1 and 2. TOP OF Continuity should exist. With switch depressed, BASE no continuity should exist between terminals 1 PLATE and 2. If continuity is not as specified above, replace the switch.
  • Page 39 TROUBLESHOOTING AND REPAIR 17. Inspection of Wiring Connection Refer to the Wiring Diagrams on page 39 and check for connection of each wire. 18. Inspection of Thermistor Using an Ohmeter, check the resistance value across the 2-pin connector. At normal temperature (77˚F (25˚C)) either thermistor (room or freeze) should measure approximately 10,000 or 10K ohms.
  • Page 40 TROUBLESHOOTING AND REPAIR 20. Repair of Refrigerant System In case there is a leak, obstruction, or trouble in the refrigerant system of the Spot Cooling System, replace or repair the part in question. After replacing any component all connections must be brazed. A.
  • Page 41 TROUBLESHOOTING AND REPAIR Removal of Refrigeration Cycle Components CAUTION 1. Before any refrigeration cycle component can be replaced, it is necessary to recover the refrigerant using standard recovery procedures and equipment. 2. To prevent oxidation, dry nitrogen should be conducted (flow rate 1l/min) through the pinch-off tube during any brazing operation.
  • Page 42 TROUBLESHOOTING AND REPAIR 21. 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 43 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 44 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). (3) Open the high pressure valve of the gauge manifold.
  • Page 45 TROUBLESHOOTING AND REPAIR 22. 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 46 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 47 TROUBLESHOOTING AND REPAIR 27. Schematic...
  • Page 48 TROUBLESHOOTING AND REPAIR...
  • Page 49 DENSO SALES CALIFORNIA, INC. TECHNICAL SERVICE DEPARTMENT First Issue: July 2003 DSCA P/N: LA990009-1200 Printed in U.S.A.
  • Page 50 (800) 264-9573 www.movincool.com DSCA P/N: LA990009-1200...

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