LG Multi-Inverter Type, Service Manual

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Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. Test Run
3.3 Ceiling Cassette Type
3.3.1 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.
3.3.2 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.
❏
Is the circulation of air adequate?
❏
Is the drainage OK?
❏
Is the heat insulation complete
(refrigerant and drain piping)?
❏
Is there any leakage of refrigerant?
❏
Does the romote controller works properly?
❏
Is there any error on wiring?
❏
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}