Service manual

7-1
7. APPENDIX
7.1 Standard tightening torques for bolts
Bolt size Main part
Tightening torque
N  m kgf  cm lbf  ft
M4 Small parts 1.6 16 1.2
M5 Solenoid valve 3.0 31 2.2
M6 Access panel 5.2 53 3.8
Evaporator fan motor
M8 Condenser fan motor 12.3 125 9.1
Control box
Service door
Evaporator fan motor mounting base
M10 Compressor suction flange 25.2 257 18.6
Compressor discharge flange
M12 Compressor 42.7 435 31.5
Note: Tolerance of tightening torque is within ±10%.
Note: Tolerance of tightening torque is within ± 10%.
※The values of resistance are at room temperature excluding those of compressor.
Stainless steel
7.2 Standard tightening torque for flare nut
Pipe size
Main part
Tighten torque
mm in.
N  m kgf  cm Ibf  ft
φ6.4
2/8 Compressor pressure port 15.7 160 11.3
φ9.5
3/8 – 36.3 370 26.8
φ12.7
4/8 Dryer 54.9 500 40.5
7.3 Resistance of motor coil and solenoid valve coil
Symbol Parts name Value of resistance Ω
CM 1.780Ω(@75˚C)
Hot gas solenoid valve coil
Injection solenoid valve coil
Electronic expansion valve coil
Compressor motor coil
CFM Condenser fan motor coil 57.2Ω
EFM Evaporator fan motor coil 19.4Ω
LSV Liquid solenoid valve coil
15.2±1.1Ω (common)
HSV
ISV
EV
White - Red : 150Ω
Orange - Red : 150Ω
Yellow - Brown : 150Ω
Blue - Brown : 150Ω
SMV
Suction modulation valve coil Blue - Yellow : 113Ω
Black - White : 113Ω
DSV
Defrosting solenoid valve coil
ESV Economizer solenoid valve coil
BSV Hot gas by-pass solenoid valve coil
Remarks
Yellow Brown Blue
White
Red
Orange
(COM)
(COM)
Black
Blue
Yellow
White