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Periodical Maintenance Table - LG RCWW Operation & Maintenance Manual

Water-cooled screw chiller
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7. MAINTENANCE
96

7-4. Periodical maintenance table

Inspection category
Motor cooling
status
Motor
insulation
Start-up
characteristics
(mark O in the
corresponding
start-up
method)
Operation current
Motor
stopped time
Discharge
gas temp.
Vibration noise
Inspection method
Check refrigerant flow status
from moisture indicator
Touch the surface of the motor
with hand
Measured at 1000V
Condolpa, reactor
In case of cold water
outlet temp. ( )°C
Check current value
After chiller is stopped, check from
half-load side of the motor when
the meter axes stopped time
Measure the surface of the bolts
with thermometer
Touch with hand or check
with ears
Standard
Check flow status
10~30 °C
100MΩ or more
Start-up time
T=5~25 sec.
Start-up current: A
Timer set value (sec.)
Timer
condolpa reactor
Check timer set value with independent timer
operation test after disconnecting high voltage.
Less than 105% of the rated
10~60 sec.
About 30~90°C
When there is no
problem
Actual
Decision
measurement
t =
sec.
A=
A
Actual
T1:
measurement
start-up
timer
T2:
subsi
-diary
timer
A
sec.
°C

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