Sanyo CHDZR09053 Charging additional refrigerant, Use a cylinder designed for use with R410A

NOTE

The required time in the above table is calculated based on the assumption that the ideal (or target) vacuum condition is less than –14.7 psig (–755 mm Hg, 5 Torr).

(2)When the desired vacuum is reached, close the “Lo” knob of the manifold valve and turn off the vacuum pump. Please confirm that the gauge pressure is under –14.7 psig (–755 mm Hg, 5 Torr) after 4 to 5 minutes of vacuum pump operation.

Charging additional refrigerant

	Manifold valve
Pressure	Lo	Hi
gauge

Valve

Liquid

R410A

CAUTION

Use a cylinder designed for use with R410A.

Close

●Charging additional refrigerant (calculated from the liquid tube length as shown in Section 1-8 “Additional Refrigerant Charge”) using the liquid tube service valve. (Fig. 7-5)

●Use a balance or scale to measure the refrigerant accurately.

●If the additional refrigerant charge amount cannot be charged at once, charge the remaining refrigerant in liquid form by using the suction tube service valve with the system in Cooling mode at the time of test run. (Fig. 7-6)

●Close the valve on the cylinder containing R410A.

Finishing the job

(1)With a flathead screwdriver, turn the liquid tube ser- vice valve counter-clockwise to fully open the valve.

(2)Turn the all service valve counter-clockwise to fully open the valve.

(3)Close all stop valves and loosen the “LO” knob of the manifold valve.

(4)Loosen the charge hose connected to all service port, then remove the hose.

(5)Replace all valve caps at all service ports and fasten them securely.

This completes air purging with a vacuum pump. The air conditioner is now ready for a test run.

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Suction tube

Close

Close

Outdoor unit

Discharge tube

Close

Open

Liquid tube

Close

Close

Balance tube

Close

Fig. 7-5

Open

Suction tube

Open

Close

Outdoor unit

Discharge tube

Open

Close

Liquid tube

Open

Close

Balance tube

Open

Fig. 7-6

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