Installation manual

7. FOR MOVEMENT AND MAINTENANCE

Front panel

Lock

7-1 FRONT PANEL REMOVAL

1. Remove front grill.

• Remove 3 screws. (See to 4-1-(4)) (Page 5).

2. Remove front panel.

• Remove 10 screws as shown in the right.

• Unlock front panel by pulling it toward yourself (1) and then

pull it down as the arrow (2).

• After removing the front panel, it is possible to service many

parts.

7-2 GAS CHARGE

1. Connect gas cylinder to the service port of stop valve (3-way).

2. Execute air purge of the pipe (or hose) coming from refrigerant gas cylinder.

3. Replenish specified amount of the refrigerant, while operating the air conditioner for cooling.

Note:

In case of adding refrigerant, comply with the quantity specified for the refrigerating cycle.

Caution:

• Do not discharge the refrigerant into the atmosphere.

Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or re-

pairs to the refrigerant circuit.

• For additional charging, charge the refrigerant from liquid phase of the gas cylinder.

If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant

inside the cylinder and the outdoor unit. In this case, ability of the refrigerating cycle decreases or

normal operation can be impossible. However, charging the liquid refrigerant all at once may cause

the compressor to be locked. Thus, charge the refrigerant slowly.

To maintain the high pressure of the gas cylinder, warm the gas cylinder with warm water (under 40°C) during

cold season. But never use naked fire or steam.

Union

Indoor unit

Liquid pipe

Gas pipe

Stop valve

Service port

Gauge manifold

valve (for R410A)

Charge hose (for R410A)

Outdoor unit

Refrigerant gas

cylinder operat-

ing valve

Refrigerant gas cylinder for

R410A with siphon

Refrigerant (liquid)

Electronic scale for refrig-

erant charging