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Operation Section

6.3 Control Box

(1) Capacitors

• The capacitors are used to temporarily boost the power output available to the fan motor and

the compressor at start-up.

• The specifications of each capacitor are listed below:

Capacitor Application Voltage Rating Capacitance

Evaporator Fan Motor 440 VAC 15 µF

Condenser Fan Motor 370 VAC 25 µF

Compressor 370 VAC 80 µF

I001916

TB2

TB1

Terminal Block

(Signal Connection)

Relay Board Fuse

Relay Board

Relay

Terminal Block

Dip Switch

Fan Capacitor

(Condenser)

Fan Capacitor

(Evaporator)

Compressor

Capacitor

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 68 69

SERVICE MANUAL 1
Table of Contents 3
1. PRECAUTIONS FOR SAFETY 6
2. GENERAL DESCRIPTION 7
3. CONSTRUCTION 8
3.2 Exterior Components 9
3.3 Internal Structure 10
3.4 Basic Construction 10
3.5 Air Flow 11
3.6 Compressor and Fans 11
3.7 Condensate Pump 11
3.8 Drain Tanks (optional) 11
4. SPECIFICATIONS 12
< NOTE > 13
Operation Section 14
5. REFRIGERANT SYSTEM 16
5.2 Compressor 17
High Temp./High Pressure 18
Liquid Refrigerant 18
Low Temp./Low Pressure 18
Gas and Liquid Mixture 18
6. ELECTRICAL SYSTEM 19
(1) Fan mode 20
(2) Cool mode 21
6.3 Control Box 22
(2) Relay board 23
(3) Relay board fuse 23
6.4 Fan Motor 24
6.5 Compressor Motor 24
6.6 Condensate Pump 25
6.7 Drain Switch 27
6.9 Compressor Protection 28
6.10 Temperature Control 28
6.11 Fan Mode Control Switch 29
7. TROUBLESHOOTING 31
7.2 Self-Diagnostic Codes 32
7.3 Troubleshooting Chart 34
(3) Overflow of drain water 38
7.4 Basic Inspection 39
Thermometer 40
Cool Air Out 40
Evaporator Air In 40
8. DISASSEMBLY 41
8.2 Disassembly 42
Repair Section 43
Screws (9) 44
Screws (12) 44
(1) Control box 45
(3) Control board 46
Set Screw 50
Nuts (6) 50
Ties (3) 50
(1) Ohmmeter method 53
(2) Capacitance tester method 53
8.8 Inspection of Fan Motor 54
8.11 Inspection of Thermistor 55
8.12 Inspection 55
9. REFRIGERANT SYSTEM REPAIR 56
(4) Use of dry nitrogen gas 57
(5) Vertical Joint 57
(2) Evacuation 60
(3) Checking vacuum 61
(4) Checking gas leak 62
(5) Evacuation (repeat) 63
9.4 Refrigerant Charging Work 64
(2) Removal of gauge manifold 65
10. REASSEMBLY 66
10.4 Wiring Notice 67
10.5 Perform the Inspection 67
10.6 Caster Maintenance 67
10.7 Schematic 68
DENSO SALES CALIFORNIA, INC 69
Long Beach, CA 90810 69

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Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Manuale di Servizio Pagina 22

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