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6
MAINTENANCE SCHEDULE
The following table contains a set of maintenance procedures to be performed and their frequency.
M
o
n
th
ly
Q
u
a
rte
rl
y
Se
m
i-
a
n
n
u
a
lly
An
n
u
a
lly
I. Compressor
I. Compressor
I.
A. Analyse the compressor alarm log
X
B. Check correct IGV operations
X
C. Check electrical connection torque
X
D. Implement humidity prevention measures (condensate)
X (
d
)
II. Controller
A. Controller operations
Check settings and operation
X
Check shutter operating settings
X
Check load balancing
X
B. Protection checks
Function test on:
Alarm outputs
X
Pump interlocks
X
High and low pressure intervention
X
High discharge temperature intervention
X
III. Condenser
A. Capacity evaluation (
a
)
O
B. Water quality analysis
X
C. Clean condenser tubes
X (
b
)
E. Seasonal Protection (antifreeze)
X
D. Clean the flow switch
X
X
IV. Evaporator
A. Capacity evaluation (
a
)
O
B. Water quality analysis
X
C. Clean evaporator tubes
X (
c
)
E. Seasonal Protection (antifreeze)
X
V. Expansion valves
A. Function check
X
VI. Unit
A. Capacity evaluation
O
B. Refrigerant leak test
X (
e
)
C. Vibration test
X
D. General appearance:
Paint/corrosion
X (
f
)
Heat insulation status
X (
f
)
VII. Electrical components
A. Check and adjust line voltage
B. Inspect components for signs of overheating
C. Check and tighten electrical components
Legend: O = Performed by internal staff
X = Performed by qualified technical staff
(
a
) Temperature control at inlet and outlet
(
b
) If approach is > 5°C
(
c
) If approach is > 4°C
(
d
) Refer to the compressor service manual
(
e
) According to F-gas regulations and local standards
(
f
) Increase frequency in aggressive environments
