Hose/Line HVAC: Service and Repair
REFRIGERANT LINES REPLACEMENT1. DISCHARGE REFRIGERANT IN REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.
3. TORQUE CONNECTIONS TO SPECIFIED TORQUE
NOTE: Connections should not be torqued tighter than the specified torque.
Compressor x Discharge hose
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
Compressor x Suction hose
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
Condenser x Discharge tube
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
Condenser x Liquid tube
Torque: 14 N.m (140 kgf.cm, 10 ft.lbf)
Receiver x Liquid tube
Torque: 5.4 N.m (55 kgf.cm. 48 in.lbf)
A/C unit x Liquid tube
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
A/C unit x Suction tube
Torque: 10 N.m (100 kgf.cm. 7 ft.lbf)
Pressure regulator valve x Suction tube
Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf)
Expansion valve x tubes
Torque:
19 mm nut: 14 N.m (140 kgf.cm. 10 ft.lbf)
24 mm nut: 32 N.m (330 kgf.cm, 24 ft.lbf)
EPR x Suction tube
Torque: 32 N.m (330 kgf.cm, 24 ft.lbf)
EPR x Equalizer tube
Torque: 10 N.m (100 kgf.cm, 7 ft.lbf)
4. EVACUATE AIR IN REFRIGERATION SYSTEM AND CHARGE WITH REFRIGERANT
Specified amount:
700 g ± 50 g (29.69 ± 1.76 oz.)
5. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detector. check for leakage of refrigerant.
6. INSPECT AIR CONDITIONING OPERATION