Sanyo CHDXR07263, CHDXR09663, CHDX09663, CHDX07263 service manual Dpr

8. Charging Compressor Oil

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

(2)Charging compressor oil into oil-charging tank

Connect a piece of pipe to the lower valve and then insert the other end deeply into the bottom of the oil con- tainer. Make sure you avoid letting any air be sucked into the tube. Next, run the vacuum pump and open the manifold gauge valves, then open the upper and lower valves to begin charging oil into the charging tank.

	Manifold	Upper valve	Close		Open
	gauge
			Close		Open
		Lower valve		2
Vacuum pump
						Oil

Fig. 16

When the predetermined amount of oil has been charged into the oil-charging tank, immediately close the lower valve. Next, run the vacuum pump until the system pressure reaches lower than -14.7 psig (5 Torr).

Close the upper valve and then, stop the vacuum pump.

CAUTION

Do this operation quickly because compressor oil easily absorbs moisture from the air.

(3)Charging compressor oil into outdoor unit

Connect the lower valve to the low-pressure outlet (with Schrader-type push-to-release valve) in the outdoor unit to be oil-charged, and then connect the high-pressure outlet (with push-to-release valve) to the upper valve via the manifold gauge valves (at Hi-pressure gauge side). In addition, connect the gas tube service port (with push-to-release valve) to the DPR (Discharge Pressure Regulator). Carry out the connection work quickly to avoid letting air enter.

•The hoses may be subject to internal pressure from the refrigerant inside the out

CAUTION door unit. A Schrader-type push-to-release valve is provided at each connection

port.

•Since the DPR valve opens at pressures of 362.6 psi and above, be sure to con- nect the DPR to the gas tube service port (low-pressure side).

High-pressure outlet port (For 5/16" (7.94mm)- dia. connector)

Low-pressure outlet port (For 5/16" (7.94mm)- dia. connector)

Gas tube service port (For 5/16" (7.94mm)- dia. connector)

Manifold

gauge

LoHi

DPR

Upper valve

Close

Lower valve

Close

Fig. 17

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