LGRED Heat General Service Manual

Part 4. Test Run

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Only for training and service purposes

LGE Internal Use Only

3.2 Ceiling Cassette Type

3.2.1 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.

CAUTION:

① For test run, carry out the cooling operation first even during winter season. If heating operation is carried out

first, it leads to the trouble of compressor.

② Carry out the test run more than 5 minutes without stopping.

(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.

3.2.2 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 data are room temperature, outside temperature, suction temperature, blow out temperature,

air velocity, air volume, voltage, current, presence of abnormal vibration and noise, operating pressure, piping

temperature.

• As to the structure and appearance, check following items.

o Is the circulation of air adequate?

o Is the drainage OK?

o Is the heat insulation complete

(refrigerant and drain piping)?

o Is there any leakage of refrigerant?

o Does the romote controller works properly?

o Is there any error on wiring?

o Aren't terminal screws loosened?

M4......118N.cm{12kgf.cm} M5......196N.cm{20kgf.cm}

M6......245N.cm{25kgf.cm} M8......588N.cm{60kgf.cm}