Sanyo 85464359982001 Use a cylinder designed for use With R410A respectively, Finishing the job

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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 mmHg, 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 mmHg, 5 Torr) after 4 to 5 minutes of vacuum pump operation.

	Manifold valve
Pressure	Lo	Hi
gauge

Valve

Liquid

CAUTION

Use a cylinder designed for use

with R410A respectively.

R410A

Charging additional refrigerant

●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 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 gas tube service valve with the system in cooling operation mode at the time of test run. (Fig. 7-6)

Finishing the job

(1)With a hex wrench, turn the liquid tube service valve stem counter-clockwise to fully open the valve.

Close

Gas tube

Close

Open

Liquid tube

Close

Close

Balance tube

Close

Outdoor unit

CAUTION

To avoid gas from leaking when

removing the charge hose, make sure the stem of the gas tube is turned all the way out (“BACK SEAT” position).

Fig. 7-5

(2)Turn the gas tube service valve stem counter-clockwise to fully open the valve.

(3)Loosen the charge hose connected to the gas tube service port (5/16") slightly to release the pressure, then remove the hose.

(4)Replace the 1/4 in. flare nut and its bonnet on the gas tube service port and fasten the flare nut securely with an adjustable wrench or box wrench. This process is very important to prevent gas from leaking from the system.

(5)Replace the valve caps at both gas and liquid service valves and fasten them securely.

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

Open

Gas tube

Open

Close

Liquid tube

Open

Close

Balance tube

Open

Fig. 7-6

Outdoor unit

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