Purging Procedures, Leak Test, And Test Run; Relocation And Maintenance - Mitsubishi Electric MSZ-SF15VA Manual De Instalación

3. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
3-1. PURGING PROCEDURES AND LEAK TEST
Refer to the procedures indicated in the installation manual of the outdoor unit.
3-2. TEST RUN
1) Insert power supply plug into the power outlet
and/or turn on the breaker. Check that all LED
lamps are not lit. If they are blinking, check
that the horizontal vane is installed correctly.
Refer to operating instructions for details.
2) Press the E.O. SW once for COOL, and twice
for HEAT operation. Test run will be performed
for 30 minutes. If the left lamp of the operation
indicator blinks every 0.5 seconds, inspect
the indoor/outdoor unit connecting wire (A)
for mis-wiring. After the test run, emergency
mode (set temperature 24ºC) will start.
3) To stop operation, press the E.O. SW several
times until all LED lamps turn off. Refer to operating instructions for details.
Note:
When power (circuit breaker) is turned on, the horizontal vanes automati-
cally move to the normal position.
Checking the remote (infrared) signal reception
Press the ON/OFF button on the remote controller (6) and check that an elec-
tronic sound is heard from the indoor unit. Press the ON/OFF button again to
turn the air conditioner off.
• Once the compressor stops, the restart preventive device operates so the
compressor will not operate for 3 minutes to protect the air conditioner.

4. RELOCATION AND MAINTENANCE

4-1. REMOVING AND INSTALLING THE PANEL
ASSEMBLY
Removal procedure
1) Remove the 2 screws which fix 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 re-
moval 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.
4-2. 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.
En-
3-3. AUTO RESTART FUNCTION
This product is equipped with an auto restart function. When the power supply
is stopped during operation, such as during blackouts, the function automati-
cally starts operation in the previous setting once the power supply is resumed.
(Refer to the operating instructions for details.)
Caution:
• After test run or remote signal reception check, turn off the unit with the
E.O. SW or the remote controller before turning off the power supply. Not
doing so will cause the unit to start operation automatically when power
supply is resumed.
To the user
• After installing the unit, make sure to explain the user about auto restart
Emergency
function.
operation switch
(E.O. SW)
• If auto restart function is unnecessary, it can be deactivated. Consult the
service representative to deactivate the function. Refer to the service
manual for details.
3-4. EXPLANATION TO THE USER
• Using the OPERATING INSTRUCTIONS, explain to the user how to use
the air conditioner (how to use the remote controller, how to remove the air
filters, how to remove or put the remote controller in the remote controller
holder, how to clean, precautions for operation, etc.)
• Recommend the user to read the OPERATING INSTRUCTIONS carefully.
4-3. 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 atmos-
phere.
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 com-
pletely so that it can be easily closed fully when the pressure gauge shows
0 MPa [Gauge] (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. 0.5 to 0 kgf/cm
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 dis-
connecting the refrigerant pipes. The compressor may burst if air etc.
get into it.
2
).
WARNING
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).