Advertisement
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
4-1. PURGING PROCEDURES AND LEAK TEST
stop valves are fully closed and covered in caps in initial state.)
gas pipe side of the outdoor unit.
Stop valve cap
*Close
*Open
Service port cap
•cm)
Precautions when using the control valve When attaching the control valve to
Service port
A
Control valve
Open
Close
Charge hose
Body
stop the vacuum pump.
mmHg).
sides of gas pipe and liquid pipe. Operating without fully opening lowers the perform-
ance and this causes trouble.
charge slowly with liquid refrigerant. Otherwise, composition of the refrigerant in the
system may be changed and affect performance of the air conditioner.
9) Tighten cap of service port to obtain the initial status.
5. RELOCATION AND MAINTENANCE
5-1. REMOVING AND INSTALLING THE PANEL ASSEMBLY
Removal procedure
shown in
and
using a thin instrument.
Then, remove the horizontal vanes.
assembly.
3) Remove the panel assembly. Be sure to
3
3
3
Installation procedure
procedure in reverse.
arrows in order to attach the assembly completely to
the unit.
3) Install the horizontal vanes.
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
Compound pressure gauge
(
Pressure gauge
Stop valve
for LIQUID
Gauge manifold valve
Handle
Low
Handle High
Charge hose
Stop valve for
GAS
Adapter for pre-
venting the back
Vacuum pump (or the vacuum
pump with the function to
the service port, valve core may de-
applied. This may cause gas leak.
When attaching the control valve to
the service port, make sure that the
valve core is in closed position, and
then tighten part A. Do not tighten
part A or turn the body when valve
core is in open position.
Unlock
Upper and
lower vanes
3
4-2. TEST RUN
the breaker.
COOL, and twice for HEAT
inspect the indoor/outdoor unit connecting wire (A) for mis-
wiring. After the test run, emergency mode (set temperature
3) To stop operation, press the E.O. SW several times until all
LED lamps turn off. Refer to operating instructions for details.
Checking the remote (infrared) signal reception
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.
4-3. 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 automatically starts operation in
the previous setting once the power supply is resumed. (Refer to the operating instruc-
tions 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
• 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.
4-4. EXPLANATION TO THE USER
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.
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.
side of the outdoor unit.
3) Close the stop valve on the gas pipe side of the outdoor unit almost completely so that
cm ).
To start the emergency operation in COOL mode, disconnect the power supply plug
turn on the breaker, and then press the E.O. SW once. (The emergency COOL
operation
emergency COOL operation.
Press the E.O. SW several times until all LED lamps turn off. Refer to operating in-
structions 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.
This product is designed and intended for use in the residential, commercial and
light-industrial environment.
The product at hand is
based on the following
EU regulations:
AUTHORIZED REPRESENTATIVE IN EU:
MITSUBISHI ELECTRIC EUROPE B.V.
Emergency
operation switch
(E.O. SW)
).
WARNING
-
Advertisement
