Pumping Down - Mitsubishi Electric MSZ-GA24NA Installation Manual

5. RELOCATING THE UNIT / MAINTENANCE
5-1. REMOVING AND INSTALLING THE PANEL ASSEMBLY
Removal procedure
Installation procedure
1) Point the horizontal vane slightly downward. (Fig. 1)
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 arrows to close the front panel se-
curely.
5-2. REMOVING THE INDOOR UNIT
Remove the bottom of the indoor unit from the installation plate.
1) Remove the front panel. (Refer to 5-1)
unit and push them up; the bottom of the indoor unit goes down and the hooks are
released.
*1 Remove the screw.
*2 Remove the tab of corner box from the indoor unit, and pull the corner box.
*3 Pull the indoor unit to remove.

5-3. PUMPING DOWN

When relocating or disposing of the air conditioner, pump down the system following the
procedure below so that refrigerant is not released into the atmosphere.
1) Connect the gauge manifold valve to the service port of the stop valve on the gas
pipe side of the outdoor unit.
2) Fully close the stop valve on the liquid pipe side of the outdoor unit.
3) Close the stop valve on the gas pipe side of the outdoor unit almost completely so
that it can be easily closed fully when the pressure gauge shows 0 MPa [Gauge] (0
2 2
lbf/in. [0 kgf/cm ]).
4) Start the emergency COOL operation.
To start the emergency operation in COOL mode, disconnect the power supply plug
and/or turn off the breaker. After 15 seconds, connect the power supply plug and/or
turn on the breaker, and then press the E.O. SW once. (The emergency COOL op-
eration can be performed continuously for up to 30 minutes.)
5) Fully close the stop valve on the gas pipe side of the outdoor unit when the pressure
gauge shows 0.05 to 0 MPa [Gauge] (approx. 7.25 to 0 lbf/in
6) Stop the emergency COOL operation.
To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer
to operating instructions for details.
2 2
[0.5 to 0 kgf/cm ]).
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO
100-8310, JAPAN
Horizontal vane
Fig. 1
Corner
box
Square hole
Fig. 2
Push Lower