Sanyo CHDXR07263*, CHDXR09663, CHDX09663, CHDX07263 service manual Charging Compressor Oil

8. Charging Compressor Oil

W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures

8-1. If Refrigerant Has Already Been Charged to Outdoor Unit

Be sure to use an exclusive oil-charging tank for charging compressor oil. Prior to charging, carry out vacuum drying inside the tank and take care that no air (in the form of bubbles) is permitted to enter the tank.

The oil charging procedures are given below.

* The receiver tank used for maintenance may be used as an exclusive oil-charging tank.

2

When installing the oil-charging tank to the refrigerant system to serve as a safety bypass circuit for refrigerant, connect it to the gas tube service port carefully to avoid releasing refrigerant into the atmosphere.

Perform oil charging CAUTION work carefully so that no

liquid refrigerant enters the charging tank.

(DPR : 623-081-7937)

Nipple

Packless valve

(Receiver-tank: 638-015-2988)

Fig. 14

(1)Evacuation drying in oil-charging tank

With the lower side valve fully closed, open the upper side valve and connect it to the vacuum pump via the manifold gauge valves as shown below. Run the vacuum pump and evacuate the tank until the pressure falls to below –14.7 psig (5 Torr) for the evacuation drying. After the evacuation drying is finished, fully close the upper valve. Next, fully close the manifold gauge valves and stop the vacuum pump.

CAUTION

To ensure proper evacuation, refer to the operating instructions that came with the vacuum pump.

Open Close

Manifold
	gauge		Upper side
Lo		Hi	valve

Close

Lower side valve

Vacuum pump

Fig. 15

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