32
Maintenance
The unit must be checked on a routine basis to ensure performance. Routine check is the best way to reduce
downtime and waste. The following needs to be checked on a routine basis:
Items Monthly Quarterly
Once half a
year
Once a year If necessary
1. Compressor
Performance appraisal; whether there is
abnormal sound
●
Whether wires are securely connected ●
Whether the working current is abnormal
(uctuation: 10%)
▲
Discharge air temperature of the compressor ▲
Check the oil level ▲
Check the color of the lubricant ▲
2. Controller
Check parameter settings ▲
Check protective device ▲
Delay protector ▲
Phase order protector ▲
High/low pressure switch ▲
Differential water pressure switch/water ow
switch
▲
Overload protector ▲
Protector against extreme temperature of
discharged air
▲
3. Plate heat exchanger
Check the water quality ●
Clean the plate heat exchanger ▲
Seasonal protection measures
▲
(anti-freeze in winter)
4. Fin heat exchanger
Clean the n heat exchanger ▲
5. Others
Whether the Y-shaped lter needs to be cleaned
or replaced
●
Whether bolts have loosened ●
NOTE: THE PRECEDING MAINTENANCE PLAN IS FOR REFERENCE ONLY. THE MAINTENANCE PLAN MAY VARY BASED ON REGION.
● INDICATES ITEMS TO BE CHECKED BY CUSTOMERS; ▲ INDICATES ITEMS TO BE CHECKED BY SERVICE PERSONNEL.
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