Relocation And Maintenance; Pumping Down - Mitsubishi Electric MSZ-FE09NA Installation Manual

5. RELOCATION AND MAINTENANCE

5-1. REMOVING AND INSTALLING THE PANEL
ASSEMBLY
Removal procedure
1) Remove the two screws that attach the panel assembly.
2) Remove the panel assembly. Be sure to remove its bottom end first.
Installation procedure
1) Install the panel assembly following the removal procedure in reverse.
2) Be sure to press the positions as indicated by the arrows in order to attach the
assembly completely to the unit.
5-2. REMOVING THE INDOOR UNIT
Remove the bottom of the indoor unit from the installation plate.
When releasing the corner part, release both left and right bottom corner part of
indoor unit and pull it downward and forward as shown in the figure on the right.
If the above method cannot be used
Remove the front panel. Then, insert hexagonal wrenches into the square holes on
the left and right sides of the unit and push them up as shown in the following figure.
The bottom of the indoor unit lowers and releases the hooks.

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]
2 2
(0 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 operation 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.
Press the E.O. SW twice to stop the operation.
When pumping down the refrigerant, stop the compressor before discon-
necting the refrigerant pipes. The compressor may burst if air etc. get into it.
2
[0.5 to 0 kgf/cm
WARNING
2
]).
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO
100-8310, JAPAN
Push
Lower
Square hole