Daikin EWYT021CZI-A1, Руководство по установке и обслуживанию

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List of Activities Weekly
Monthly
(Note 1)
Yearly/
Seasonal
(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 ( Quarterly)
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
Refrigeration circuit:
Check for any refrigerant leakage (leak test) X
Analyse compressor vibrations X
Hydraulic circuit (Indoor Unit):
Check for any water leakage X
Check hydraulic connections X
Check the pressure at the pump inlet X
Clean the water filter X
Check the glycol concentration X
Check the water flow rate X
Check the safety valve X
Coil section (Outdoor Unit):
Check the cleaning of coils and water heat exchangers (Note 5) X
Verify that fans are well tightened X
Verify the coil fins X
BPHE (Indoor Unit):
Check the cleaning of the BPHE X
Table 20
– Standard Routine Maintenance Plan
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.