LG THERMA V, Руководство по установке, Страница: 266 / 277

266
COMMISSIONING
ENGLISH
To assure best performance of , it is required to perform periodical check and
maintenance. It is recommended to proceed following check list for once a year.
Starting Operation
Check before Starting Operation
1
Check to see whether there is any refrigerant leakage, and check whether the power
or transmission cable is connected properly.
2
Confirm that 500 V megger shows 2.0 M
Ω
or more between power supply terminal
block and ground. Do not operate in the case of 2.0 M
Ω
or less.
NOTE: Never carry out mega ohm check over terminal control board.
Otherwise the control board may break.
Immediately after mounting the unit or after leaving it turned off for an
extended length of time, the resistance of the insulation between the power
supply terminal board and the ground may decrease to approx. 2.0 M
Ω
as a
result of refrigerant accumulation in the internal compressor.
If the insulation resistance is less than 2.0 M
Ω
, turn on the main power supply.
3
When the power is applied for the first time, operate the product after preheating for
2 hours. To protect the unit by increasing the oil temperature of the compressor.
CAUTION
!
Turn off the power before proceeding maintenance.
No Category Item Check Point
1
Water
Water pressure
• In normal state, the pressure gauge (in front of the unit) should
indicate 2.0~2.5 bar.
• If the pressure is less than 0.3 bar, please recharge the water.
2 Strainer (Water filter)
• Close the shut-off valves and disassemble strainer. Then wash the
strainer to make it clean.
• While disassembling the strainer, be careful for water flood out.
3 Safety valve
• Open the switch of the safety valve and check if water is flood out
through the drain hose.
• After checking, close the safety valve.
4 Electricity Terminal block wiring
• Look and inspect if there is loosen or defected connection on the
terminal block.