Service manual
18
7.9
Gas charging
Procedure:
1. Connect the charge hose to the charging cylinder.
Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of
the cylinder.
2. Purge the air from the charge hose.
Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air
(be careful of the liquid refrigerant).
3. Open the valves (Low side) on the charge set and charge the system with liquid refrigerant.
If the system cannot be charge with the specified amount of refrigerant, if can be charged with a little at a
time (approximately 150g each time0 while operating the air conditioner in the cooling cycle; however, one time
is not sufficient, wait approximately 1 minute and then repeat the procedure.(pumping down-pin).
4. Immediately disconnect the charge hose from the 3-way valve
’s service port.
Stopping partway will allow the refrigerant to be discharged.
If the system has been charged with liquid refrigerant while operating the air conditioner, turn off the air
conditioner before disconnecting the hose.
5. Mounted the valve stem caps and the service port
Use torque wrench to tighten the service port cap to a torque of 18N.m.
Be sure to check for gas leakage.
Summary of Contents for 38KCR009713
Page 9: ...Service manual 6 Refrigerant cycle diagram Cooling only Heat pump mode...
Page 11: ...Service manual 8 5 Wiring diagram Indoor 42KCR009713 42KCR012713 42KCR018713...
Page 12: ...Service manual 9 42QCR009713 42QCR012713 42QCR018713...
Page 13: ...Service manual 10 Outdoor 38KCR009713 38KCR012713 38KCR018713...
Page 14: ...Service manual 11 38QCR009713 38QCR012713 38QCR018713...