Table of Contents
Advertisement
COMMISSIONING
190
To assure best performance of
maintenance. It is recommended to proceed following check list for once a year.
CAUTION
!
Turn off the power before proceeding maintenance.
No
Category
1
Water pressure
Water
2
3
Terminal block
4
Electricity
Starting Operation
Check before Starting Operation
Check to see whether there is any refrigerant leakage, and check whether the power or
1
transmission cable is connected properly.
Confirm that 500 V megger shows 2.0 MΩ or more between power supply terminal block and
ground. Do not operate in the case of 2.0 MΩ or less.
NOTE: Never carry out mega ohm check over terminal control board.
Otherwise the control board may break.
2
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 MΩ as a result of refrigerant
accumulation in the internal compressor.
If the insulation resistance is less than 2.0 MΩ, turn on the main power supply.
When the power is applied for the first time, operate the product after preheating for
3
2 hours. To protect the unit by increasing the oil temperature of the compressor.
, it is required to perform periodical check and
Item
• 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.
• Close the shut-off valves and disassemble strainer. Then
Strainer
wash the strainer to make it clean.
(Water filter)
• While disassembling the strainer, be careful for water flood
out.
• Open the switch of the safety valve and check if water is
Safety valve
flood out through the drain hose.
• After checking, close the safety valve.
• Look and inspect if there is loosen or defected connection
wiring
on the terminal block.
Check Point
Advertisement
Table of Contents
