LG RCWW Operation & Maintenance Manual page 7

• Do not overcharge refrigerant to the system.
- Refrigerant overcharging results in higher discharge pressure with higher cooling fluid consumption. Also it can
damage the compressor and increase the power consumption. Also it can damage the compressor and increase
the power consumption.
• Do not add different type of oil.
- It may cause abnormal operation of chiller.
• Turn controller power off before service work.
- It secures safety and prevents damage to the controller.
• Maintain the compressor oil pressure to normal level.
- Use proper safety precautions whem relieving pressure.
• Welding the evaporator head or nozzle part is not recommended.
- If the part requires welding, remove the chilled water flow switch and entering/leaving fluid thermistors before
welding. After the welding is completed, reinstall the flow switch and thermistors. Failure to remove these de-
vices may cause component damage.
• Do not open the circuit breaker arbitrarily during the operation.
- It may cause damage or malfunction.
• Do not operate with wet hand.
- It may cause electric shock.
• During maintenance work, check whether all of the power lines connected to the control panel or starter panel are
interrupted.
- It may cause electric shock.
• When power is on, do not open the door of control panel or starter panel, and protective cover.
- It may cause electric shock.
• Do not open the circuit breaker without permission while running.
- It may cause damage or malfunction.
• Tighten bolts and screws with the specified torque.
- Otherwise, it may cause fire, damage, or malfunction.
• Do not change electric or control devices arbitrarily.
- It may cause fire, damage, or malfunction.
• Only the persons who have sufficiently studied the user's manual should operate the control panel or starter panel.
- Otherwise, it may cause injury, fire, malfunction, or damage.
• Do not perform welding work near cables connected to the main unit.
- Otherwise, it may cause fire or damage.
• Connect only the input/output signal cables specified in the drawing to the control panel or starter panel.
- Otherwise, it may cause malfunction or damage.
• Use the rated electrical cables.
- If not, it may cause fire or damage.
• Use specified parts for repair.
- If not, it may cause fire or damage.
• Install the machine, control panel, and starter panel at a place where there is no combustible material.
- Otherwise, it may cause fire.
• Do not exceed the voltage supply limit described in the relevant manual.
- Otherwise, it may cause damage or malfunction.
• Connect the signal cables connected to the control devices following the circuit diagram.
- It may cause damage or malfunction.
• Do not store the product in a place where is a flooding risk or a lot of moisture.
- Otherwise, it may cause damage or malfunction.
• Do not use the indoor control panel or starter panel outside of the building.
- Otherwise, it may cause damage or malfunction.
1. CAUTIONS FOR SAFETY _ WARNING/CAUTION
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