SINGLE SCREW CHILLERS IMM
Engineered for Flexibility and Performance
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9. Maintenance
9.1 Regular Maintenance of Protective Device, etc.
Protectors must be checked regularly according to laws and regulations. The process must be
recorded at the same time.
Equipment would be damaged by inaccurate operations or incorrect orders
9.2 Pre-maintenance
a. Contact with other maintenance managers before maintenance.
b. Make sure that you have read the safety part in
[4.Safety]
.
c. Please select “Local” on the HMI if you needn’t remote operation to avoid auto-running by
remote signals.
d. Warning signs should be hung in a prominent position when the chiller is being maintained.
9.3 Regular Maintenance
a. Check the chilled water state.
Change the polluted water in the system if the chilled water quality get worse. Adjust to a
correct value if the Ethylene glycol solution concentration reduces below the setting point.
b. Check that if the air is mixed into the water pipes.
The air may get into the water pipes even though you have vented it at first. Please vent the air
at regular intervals.
c. Clean the inside of Evaporator and Condenser if necessary.
After 2~3 year operating, clean condenser tubes and evaporator tubes once a year is strongly
recommended.
You can contact franchiser for more details.
d. Confirm electrical system
Make sure that there’s no loose terminals, no aging and discolored wires.
9.4 Maintenance Contract
The chiller’s operation status varies largely with the cooling load, cooling water temperature and
flow.
The customer is recommended to sign a maintenance contract with the Daikin service branch.
Please contact with the dealer for detailed information.
9.5 About Refrigerant and refrigeration Oil
The type and charging quantity is shown by chiller nameplate.
Non-designated refrigerant and refrigeration oil is forbidden.
Mixed refrigerant and refrigeration oil is forbidden.
