LG TB-H488RSS5 Service Manual page 25

2) Connection of power supply
1. Connect the power supply cord to the independent power supply.
• Circuit breaker is required.
2. Operate the unit for fifteen minutes or more.
3) Evaluation of the performance
1. Measure the temperature of the intake and discharge air.
2. Ensure the difference between the intake temperature and the discharge air is more than 8°C (Cooling) or
vice-versa (Heating).
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power connection specially for the air conditioner. As for the method
of wiring, be guided by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screws which fastens the wiring in the casing of electrical fittings are liable to become loose
due to vibrations, which the unit is subjected during the course of transportation. Check them and
make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out of the
wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked
on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the
normal function of a overload protection device.
• Proper starting power is not given to the compressor.
CAUTION
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