LG RCWFH Series Instruction Manual page 103

• If the chiller is working under Local Operation Mode, follow the steps as follows. If strange situation is detected,
shut down the chiller immediately and follow the "troubleshooting" procedure. For more detailed information, refer
to the "Check list".
Press the Operation
Button
Oil Pump Run
Start the compressor
Start-up
competed
Operating
Figure 84. Start-up procedure (2)
motor
1) Checking the oil pressure
When the operation button on the control panel is
pressed, oil pump will be activated that leads to an in-
crease in the oil pressure and if the differential pres-
sure between supplying oil to the bearing and the
inner tank oil lasts for 120~180 sec. above 1.0 kg/cm
the compressor motor will be operated.
2) Direction of the compressor motor's rotation.
3) Starting characteristic
At this time, 2 items check-up is needed simultane-
ously. Make sure 2 people are working together.
- Direction of the motor's rotation
Record the rotating direction at the counter load part
of the motor. If the direction is opposite, stop the
chiller and change the two among three phases.
- Starting Characteristic
Check the starting current, acceleration completion
time as on the "Check List".
4) Check the Operating Current
5) Motor Cooling Status
- Operating Current
After the start-up is done, the vane will be opened
gradually and the current increases simultaneously.
Operation current should not exceed the rated cur-
rent.
If exceeds, set it referring to the "capacity control
module."
- Motor Cooling Status
Periodic physical check-up of the motor surface tem-
perature is required while operation.
- Checking the oil tank and the bearing temperature
Check if the oil tank and the bearing temperature is
preserved at 40~65°C. If not refer to "Trouble Shoot-
ing" and "Check List".
6) Checking all sorts of pressure status
7) Checking the operating sound and vibration
8) Chilled-water inlet and outlet temperature
9) Cooling-water inlet and outlet temperature
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