CAUTION

Use a cylinder designed for

use with R410A respectively.

 

Charging additional refrigerant

Charging additional refrigerant (calculated from the liquid tube length as shown in Section 1-7 “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.

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

 

Manifold valve

Pressure

Lo

Hi

gauge

Valve

Liquid

R410A

Close

Gas 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).

Open

Liquid tube

Close

(3)

Loosen the charge hose connected to the gas

 

tube service port (for ø5/16" tube) slightly to

 

release the pressure, then remove the hose.

(4)

Replace the service port cap on the gas tube

 

service port and fasten the cap securely with an

 

monkey spanner or box wrench. This process is

 

very important to prevent gas from leaking from

 

the system.

Fig. 7-5

(5) Replace the valve caps at both gas tube and liquid

tube service valves and fasten them securely.

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

Open

Gas tube

Open

Close

Liquid tube

Open

Fig. 7-6

Outdoor unit

67

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Image 67
Sanyo 85464359981002 Use a cylinder designed for, Charging additional refrigerant, Finishing the job

85464359981002 specifications

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