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Daikin EWAD400T-XRC2 [19/23] D eimac01502 18_02en 19 23
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D–EIMAC01502–18_02EN - 19/23
Table 3 –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
Clean
X
Paint where necessary
X
Clean and paint where necessary
X
Analysis of water (6)
X
Check of flow switch operation
X
Electrical:
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 oil heater
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
X
Verify refrigerant flow using the liquid sight glass – Sight glass full
X
Verify filter dryer pressure drop
X
Verify oil filter pressure drop (Note 5)
X
Analyse compressor vibrations
X
Analyse compressor oil acidity (7)
X
Condenser section:
Clean water rinse condenser coils (Note 4)
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
Notes:
8. Units placed or stored in a Highly Aggressive Environment for long time without operation are still subject to those routine maintenance steps.
8.2 Unit Maintenance and Cleaning
Unit exposed to a highly aggressive environment can face corrosion in a shorter time than ones installed on a standard
environment. Corrosion causes a rapid rusting of the frame core, consequently decreases unit structure life time. To avoid
that, it is necessary to wash periodically the frame surfaces with water and suitable detergents.
In case of part of unit frame paint came off, it is important to stop its progressive deterioration by repainting the exposed
parts using proper products. Please contact factory to get the required products specifications.
8.3
Note: in case of just salt deposits are present, it is enough to rinse the parts with fresh water.
8.4 Microchannel Coil Maintenance
Routine cleaning of coil surfaces is essential to maintain proper operation of the unit, avoid corrosion and rusting.
Elimination of contamination and removal of harmful residues will greatly increase the life of the coil and extend the life of
the unit.
Relative to fin and tube heat exchangers, microchannel coils tend to accumulate more of the dirt on the surface and of the
less dirt inside which can make them easier to clean.
The following maintenance and cleaning procedure are recommended as part of the routine maintenance activities.
1. Remove surface dirt, leaves, fibers, etc. with a vacuum cleaner (preferably with a brush or other soft attachment rather
than a metal tube), compressed air blown from the inside out, and/or a soft bristle (not wire!) brush. Do not impact or
scrape the coil with the vacuum tube, air nozzle, etc..
Содержание
- Air cooled chiller with screw compressor 1
- Contents 2
- D eimac01502 18_02en 2 23 2
- List of figures 2
- Original instructions 2
- D eimac01502 18_02en 3 23 3
- D eimac01502 18_02en 4 23 4
- D eimac01304 17en 5 23 5
- Introduction 5
- D eimac01502 18_02en 6 23 6
- General information 6
- Operating limits 6
- Receiving the unit 6
- D eimac01502 18_02en 7 23 7
- D eimac01502 18_02en 8 23 8
- Mechanical installation 8
- D eimac01502 18_02en 9 23 9
- D eimac01502 18_02en 10 23 10
- D eimac01502 18_02en 11 23 11
- D eimac01502 18_02en 12 23 12
- D eimac01502 18_02en 13 23 13
- D eimac01502 18_02en 14 23 14
- Sound protection when sound levels require special control great care must be exercised to isolate the unit from its base by appropriately applying anti vibration elements supplied as an option flexible joints must be installed on the water connections as well 5 water piping 14
- The water system must have 14
- D eimac01502 18_02en 15 23 15
- D eimac01502 18_02en 16 23 16
- D eimac01502 18_02en 17 23 17
- Electrical installation 17
- Maintenance 17
- Operation 17
- D eimac01502 18_02en 18 23 18
- D eimac01502 18_02en 19 23 19
- D eimac01502 18_02en 20 23 20
- Periodic obligatory checks and starting up of appliances under pressure 20
- Service and limited warranty 20
- D eimac01502 18_02en 21 23 21
- Important information regarding the refrigerant used 21
- D eimac01502 18_02en 22 23 22
- Disposal 22
- D eimac01502 18_02en 23 23 23
- Daikin applied europe s p a 23
- Via piani di santa maria 72 00072 ariccia roma italia tel 39 06 93 73 11 fax 39 06 93 74 014 http www daikinapplied eu 23
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