LG RCWW Operation & Maintenance Manual page 97

Inspection category
Inlet
Cooling water
Outlet
Condensing
pressure (temp.)
Heat exchanging status
Inlet
Chilled water
Outlet
Vaporizing pressure
(temp.)
Heat exchanging status
Refrigerant filling
amount
Boiling status
Refrigerant
contamination
Oil amount
Oil filling amount
Oil leakage
Chilled water
flow switch
Cooling water
flow switch
Table 14 Periodical maintenance and inspection table
Inspection method
Check with thermometer
Check with thermometer
Check with manometer
(thermometer)
Difference between condensing
temp. and coolant outlet temp.
Check with thermometer
Check with thermometer
Check with manometer
(thermometer)
Difference between cold water outlet
temp. and vaporizing temp.
Check through site glass
Visual inspection
Check through site glass
Visual inspection
Accumulated filling amount after
filling new refrigerant
Lubrication system visual inspection
Decrease chilled water amount to
check the operation
Decrease cooling water amount to
check the operation
Standard
measurement
34°C or less
(standard condition)
24°C or more
(standard condition)
6~10 kg/cm 2
(26~42 °C)
1~3 °C
6~15 °C
4°C or more
2
2~5 kg/cm
(0~21 °C)
1~3 °C
Refer to 10.5 standard
filling amount
Whether contaminating
material, moisture,
oil is included
Check with site glass
on the gear box during
operation
Refer to 10.5 standard
Month
filling amount
7. MAINTENANCE
97
Actual Decision
(OX)
°C
°C
2
kg/cm (°C)
°C
2
kg/cm (°C)
°C
Day