Hose/Line HVAC: Service and Repair
REFRIGERANT LINES REPLACEMENT1. Recover refrigerant from 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 torque tighter than the specified torque.
Compressor x Suction tube
Torque: 10 Nm (7 ft lb)
Compressor x Discharge tube
Torque: 10 Nm (7 ft lb)
Condenser x Discharge tube
Torque: 10 Nm (7 ft lb)
Compressor x Liquid tube
Torque: 10 Nm (7 ft lb)
Receiver x Liquid tube
Torque: 5.4 Nm (48 in lb)
A/C unit x Liquid tube
Torque: 10 Nm (7 ft lb)
A/C unit x Suction tube
Torque: 10 Nm (7 ft lb)
Liquid lines
Torque: 10 Nm (7 ft lb)
Suction
Torque: 10 Nm (7 ft lb)
4. Evacuate air in refrigeration system and charge with refrigerant.
Specified amount: 850 +/- 50 g (29.98 +/- 1.76 oz)
5. Using a gas leak tester, check for leakage of refrigerant.
6. Inspect air conditioning operation.