Relocation And Maintenance; Pumping Down - Mitsubishi Electric MSZ-FE18NA Manuel D'installation

5. RELOCATION AND MAINTENANCE

5-1. REMOVING AND INSTALLING THE PANEL ASSEMBLY
Removal procedure
1) Remove the three 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 assem-
bly 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 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 psi [Gauge] (0 Mpa).
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 (0.1 to 0 psi [Gauge] (0.05 to 0 Mpa)).
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.
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING
Push
Square hole
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU,
TOKYO 100-8310, JAPAN
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