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Table 8
–Routine Maintenance Plan for Critical Application and/or Highly Aggressive Environment
List of Activities
(Note 8)
Weekly
Monthly
(Note 1)
Yearly/Seas
onal
(Note 2)
General:
Reading of operating data (Note 3)
X
Visual inspection of unit for any damage and/or loosening
X
Verification of thermal insulation integrity
X
Cleaning
X
Paint where necessary
X
Analysis of water (4)
X
Check of flow switch operation
X
Electrical Installation:
Verification of control sequence
X
Verify contactor wear
– Replace if necessary
X
Verify that all electrical terminals are tight
– Tighten if necessary
X
Clean inside the electrical control board
X
Visual inspection of components for any signs of overheating
X
Verify operation of compressor and electrical resistance
X
Measure compressor motor insulation using the Megger
X
Clean air intake filters of the electrical panel
X
Verify operation of all ventilation fans in the electrical panel
X
Refrigeration circuit:
Check for any refrigerant leakage (leak test)
X
Verify refrigerant flow using the liquid sight glass
– Sight glass full
X
Verify filter dryer pressure drop
X
Analyze compressor vibrations
X
Analyze compressor oil acidity (Note 7)
X
Check the security valve (Note 5)
X
Condenser section:
Checking the cleaning of the air-cooler (Note 6)
X
Check the cleaning of water heat exchangers (Note 6)
X
Quarterly clean condenser coils (E-coated only)
X
Verify that fans are well tightened
X
Verify condenser coil fins
– Comb if necessary
X
Check the aspect of the plastic protection of the copper/aluminum connection
X