Maintenance - Daikin UWL-B5 Series Catalogue/Engineering Data

Maintenance

Repair
Note: Before checking and maintaining the
unit, confirm the safety precautions again.
The unit can only be repaired and serviced by specially-trained technicians. After a unit is serviced, safety
controls must be checked and analyzed before the unit is turned on.
Items to be Checked Periodically
■ Clean the shell and tube heat exchanger periodically.
To optimize heat exchange efficiency of the shell and tube heat exchanger,please clean the shell and tube
heat exchanger periodically.
■ Check the status of the chilled water from time to time.
Discharge water by loosening the air or water discharge plug.
If the water quality degrades, replace water in the system timely.
Contaminated water can degrade the cooling capacity and corrode the heat exchanger and water pipes.
■ Check whether free air exists in the water pipe system.
Free air may get into the system even during the air discharging process. Discharge air from time to time.
■ Clean the Y-shaped water filter in the water system periodically.
■ Replenishing refrigerant and lubricant.
Each unit is filled with enough refrigerant and lubricant before delivery.
If the system operates smoothly, customers neither need nor are allowed to replenish or change the
refrigerant or lubricant.
If replenishment is necessary due to leakage, please refill the quantity specified in the nameplate of the
unit.
Note: Before delivery, strict factory test
is conducted to ensure the unit works at
optimal performance. The unit must be
maintained from time to time.
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