Relocation And Maintenance; Pumping Down - Mitsubishi Electric MSZ-AS90VGD Installation Manual

5. RELOCATION AND MAINTENANCE

5-1. REMOVING AND INSTALLING THE PANEL ASSEMBLY
Removal procedure (Fig. 1, 2)
1)
2) Open the front panel.
4) Close the front panel.
Fig. 1
Installation procedure (Fig. 3, 4)
1) Point the horizontal vane slightly downward. (Fig. 3)
2) Attach the bottom of the panel assembly under the horizontal vane.
3) Fit in the top of the panel assembly.
4) Fit in the bottom of the panel assembly and tighten it using screws.
securely.
Fig. 3
5-2. REMOVING THE INDOOR UNIT
Remove the bottom of the indoor unit from the installation plate. (Fig. 1, 2)
• Remove the front panel. (Refer to 5-1)
•
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.
Corner box
Fig. 1
Fig. 2
Horizontal vane
Fig. 4
Push Lower
Fig. 2

5-3. PUMPING DOWN

When relocating or disposing of the air conditioner, pump down the system following the
procedure below so that no refrigerant is 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.
3) Close the stop valve on the gas pipe side of the outdoor unit almost completely so that it
4) Start the emergency COOL operation.
To start the emergency operation in COOL mode, disconnect the power supply plug and/
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
6) Stop the emergency COOL operation.
Press the E.O. SW several times until all LED lamps turn off. Refer to operating instruc-
tions 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.
emergency COOL operation can be
2 ).
WARNING
2
).