For Movement And Maintenance; Gas Charge - Mitsubishi Electric MS-GD80VB 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.
3 Pull the bottom.
2 Remove three screws.
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.
1Point 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.
Square hole
Hold this concave section and pull the bottom
forward to remove the front panel.
5 Push
2 4
Horizontal vane
Push
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.
•
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 fi re or steam.
3
Indoor unit
Refrigerant gas
cylinder operating
valve
This product is designed and intended for use in the residential, commercial and
light-industrial environment.
The product at hand is based on
the following EU regulations:
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU,
TOKYO 100-8310, JAPAN
CAUTION
Union
Stop valve
Liquid pipe
Gas pipe
Service port
Gauge manifold valve
(for R410A)
Charge hose (for R410A)
Refrigerant gas cylinder for
R410A with siphon
Refrigerant (liquid)
Electronic scale for refriger-
ant charging
• Low Voltage Directive 2006/95/EC
• Electromagnetic Compatibility Directive
2004/108/EC
Outdoor unit