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5. Maintenance and Cleaning
Diligent maintenance is the prime factor for assuring an error-free and efficient operation of
the unit. Operating personnel can perform these tasks when properly trained.
Regularly check the water level and refill water and antifreeze, if necessary.
5.1 Heat exchanger
In order to achieve maximum cooling capacity keep the heat exchanger of the cooling unit
clean. Regularly check it and if necessary clean it:
Proceed as following:
1. Disconnect cooling unit from the mains
2. Remove complete cover
3. Remove dust by forcing it out in the opposite direction from which it entered. If
compressed air is available, direct the air against the inside of the heat exchanger
4. Mount cover
5.2 Pump
About every 3 months check the filter of the pump for clean condition, in case of polluted
water, more often.
CAUTION
Clean filter regularly according to maintenance instructions, otherwise damage of pump
may occur!
Proceed as following:
1. Disconnect cooling unit from the mains
2. Remove cover
3. Close ball cock
4. Unscrew filter cap (24 mm nut)
Note: Some water will run out of pump. Collect the water with suitable vessel!
5. Remove and clean filter if necessary or replace filter
6. Insert filter and mount cap
7. Open ball cock
CAUTION
Never operate cooling unit when ball cock is closed, otherwise damage of pump may
occur!
8. Mount cover
9. Run cooling unit to deaerate cooling circuit (Setting to work)
10. Check water level and refill if necessary
