For Movement And Maintenance; Gas Charge - Mitsubishi Electric MS-GA60VB Series Installation Manual

7. FOR MOVEMENT AND MAINTENANCE

7-1 REMOVING AND REINSTALLING THE FRONT PANEL
FRONT PANEL REMOVAL
4 Release the hooks.
1 Remove the screw caps.
2 Remove three screws.
3 Pull the bottom.
FRONT PANEL REINSTALLATION
Note:
Do not open the front panel up beyond the level position.
The panel may come off in order to prevent it from being damaged.
1 Set the horizontal vane to the position as below before reinstalling the front
panel.
1 Point the
horizontal
vane slightly
downward.
2 Attach the bottom of the front panel under the horizontal vane.
3 Fit in the top of the front panel.
4 Fit in the bottom of the front panel and tighten it using screws.
5 Push the section of the front panel marked by the arrow and fi t the panel into the
air conditioner.
7-2 REMOVING THE INDOOR UNIT
Remove the bottom of the indoor unit from the installation plate.
1 Remove the front panel. (See FRONT PANEL REMOVAL shown above.)
2 Insert fl at screwdrivers into the square holes at the left and right bottom of the
indoor unit and push them up; the bottom of the indoor unit goes down and the
hooks are released.
Push
Square hole
Hold this concave section and pull the bottom
forward to remove the front panel.
3
5 Push
2 4
horizontal vane
Go down

7-3 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 specifi ed amount of the refrigerant, while operating the air conditioner
for cooling.
Note:
In case of adding refrigerant, comply with the quantity specifi ed for the refrigerating
cycle.
Do not discharge the refrigerant into the atmosphere.
Take care not to discharge refrigerant into the atmosphere during installation,
reinstallation, or repairs to the refrigerant circuit.
When charging the refrigerant system with additional refrigerant, be sure
to use liquid refrigerant.
Adding gas refrigerant may change the composition of the refrigerant in the
system and affect normal operation of the air conditioner. Also, charge the
system slowly, otherwise the compressor will be locked.
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 fi re or steam.
Union
Indoor unit
Refrigerant gas
cylinder operating
valve
Charge hose (for R410A)
Refrigerant gas cylinder for
R410A with siphon
Refrigerant (liquid)
Electronic scale for refrigerant
charging
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODAKU, TOKYO
100-8310, JAPAN
CAUTION
Stop valve
Liquid pipe
Outdoor unit
Gas pipe
Service port
Gauge manifold valve
(for R410A)