ef cooling Ernst H. Furrer AG Operating manual
9-28 Chapter page Issue: 07 / 2015 Cooling unit EVO 45, 0390.013
9.2.3 Replacing the operating media
To replace the operating medium, see Chap. 4.2.1 Emptying (frost protection).
If necessary, clean the tank with a brush and rinse out.
Important sequence for filling the water tank:
1. First remove the filter cup. Fill the tank with fresh medium.
2. Only fill in a mixture of 33 % propylenglycol / 67 % clean water.
3. Insert the new water filter.
Make sure that the O-ring sits uniformly in the groove of the filter cup. Screw the filter cup into
the filter head. Tighten slightly with the filter wrench.
After switching the cooling unit back on, check the O-ring for leaks. Flow alarms appear if air is
expelled from the filters and the lines. Wait one minute to acknowledge the fault. Check the
water level. If necessary, top up the water to the "Max." mark.
9.3 Replacing defective components
Working on and the replacement of components in the refrigerant circuit are only permitted by
qualified personnel of a specialist refrigeration company. Observe the legal environmental
regulations.
When replacing components in the medium circuit, also empty the cooling unit, see Chap. 4.2.1
Emptying (frost protection).
9.4 Troubleshooting at repair level
For a list of warning and alarm messages, possible causes of faults and how to rectify them, see
Chap. 13.7 PLC manual.
If the malfunction cannot be remedied with the aid of this malfunction table, please
contact the Customer Service of your supplier or the Customer Service of Ernst H. Furrer
AG directly. The address is given in the chapter 12.1 Address.
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