Table 20 - Standard Routine Maintenance Plan - Daikin EWYT021CZI-A1 Installation And Maintenance Manual

List of Activities
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
Refrigeration circuit:
Check for any refrigerant leakage (leak test)
Analyse compressor vibrations
Hydraulic circuit (Indoor Unit):
Check for any water leakage
Check hydraulic connections
Check the pressure at the pump inlet
Clean the water filter
Check the glycol concentration
Check the water flow rate
Check the safety valve
Coil section (Outdoor Unit):
Check the cleaning of coils and water heat exchangers (Note 5)
Verify that fans are well tightened
Verify the coil fins
BPHE (Indoor Unit):
Check the cleaning of the BPHE
Notes:
1. Monthly activities include all the weekly ones.
2. The annual (or early season) activities include all weekly and monthly activities.
3. Daily reading of the operating values of the unit allows maintaining high observational standards.
4. Check for any dissolved metals.
5. Clean condenser banks with clean water and water heat exchangers with appropriate chemicals. Particles and fibres could clog up
the exchangers, especially for water exchangers pay attention if water rich in calcium carbonate is used. An increase in pressure
drops or a decrease in thermal efficiency means that the heat exchangers are clogged. In environments with a high concentrati on of
airborne particles, it might be necessary to clean the condenser bank more often.
6. Units placed or stored in a Highly Aggressive Environment for long time without operation are still subject to those routine maintenance
steps.
Table 20 – Standard Routine Maintenance Plan
Monthly
Weekly
(Note 1)
X
X
X
X
X
X (Quarterly)
X
X
X
X
X
X
X
D-EIMHP01505-22_00EN 45/59
Yearly/
Seasonal
(Note 2)
X
X
X
X
X
X
X
X
X
X
X
X
X