Table 8 -Routine Maintenance Plan For Critical Application And/Or Highly Aggressive Environment - Daikin EWAT_B Series Installation, Maintenance And Operation Manual

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