Test Running - LG LM-4462C2T Service Manual

In case of the Outdoor Unit being installed above
position of the Indoor Unit.
2. Tape the Pipings and Connecting cable from
bottom to top.
3. Form the pipings gathered by taping along the
exterior wall, and make the trap prevent water
from entering into the room.
4. Fix the pipings onto the wall by saddle or
equivalent.

Test running

1) PRECAUTIONS IN TEST RUN
• The initial power supply must provide at least 90% of the rated voltage.
Otherwise, the air conditioner should not be operated.
For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried
Caution
out firstly, it leads to the trouble of compressor. Then attention must be paid.
Carry out the test run more than 5 minutes without fail.
(Test run will be cancelled 18 minutes later automatically)
• The test run is started by pressing the room temperature checking button and down timer button for 3 seconds at the
same time.
• To cancel the test run, press any button.
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETE
• After completing work, be sure to measure and record trial run properties, and store measured data, etc.
• Measuring items are room temperature, outside temperature, suction temperature, blow out temperature, wind velocity,
wind volume, voltage, current, presence of abnormal vibration and noise, operating pressure, piping temperature, com-
pressive pressure.
• As to the structure and appearance, check following items.
Is the circulation of air adequate?
Is the draining smooth?
Is the heat insulation complete
(refrigerant and drain piping)?
Is there any leakage of refrigerant?
Is the remote controller switch operated?
Is there any faulty wiring?
Are not terminal screws loosened?
M4......118N . cm{12kgf . cm} M5......196N . cm{20kgf . cm}
M6......245N . cm{25kgf . cm} M8......588N . cm{60kgf . cm}
–26–
Seal a small opening
around the pipings
with gum type sealer.
Trap