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We reserve the right to make changes without any prior notice.
Translation from original instructions
8.4 Periodic checks
Carry out periodic checks to make sure the unit is working correctly:
OPERATION
RECOMMEN
-
DED FREQUEN
-
CY
Check the operation of all the control and safety equipment as described previously.
Monthly
Check the tightness of the electrical terminals in the electrical control panel and in the terminal bo-
ards of the compressors. The moving and fixed contacts of the contactors must be cleaned periodi
-
cally and should be replaced whenever they show signs of deterioration.
Monthly
Make sure there are no oil leaks from the compressor.
Monthly
Make sure there are no water or water/glycol mixture leaks in the hydraulic circuit.
Monthly
If the unit is to remain out of service for a long time, drain the water from the pipes and the heat
exchanger. This operation is necessary if ambient temperatures lower than the freezing point of the
fluid used are expected during the time it is to remain stopped.
Seasonal
Check the filling of the water circuit.
Monthly
Check that the differential water pressure switch, or the flow switch (where present), is working cor
-
rectly.
Monthly
If present, check the crankcase heaters of the compressors.
Monthly
Clean the metal filters in the hydraulic pipes.
Monthly
Clean the finned coil by following the instructions in the “External cleaning” section according to the
type of coil installed
3 months
Check the condition, fixing and balance of the fans.
4 months
Check that the noise emitted by the unit is normal.
4 months
Replacement of the refrigerant leak detector sensor
Every 5/6 years
Check that the cable glands in the box of the electrical control panel are tightened.
Yearly
This planning refers to an average installation; there could be installations in which it may be necessary to
increase the frequency of some checks.
Current legislation may require considerably longer intervals on periodic checks than the recommended
ones, also in reference to the safety devices installed and to the refrigerant charge present, without causing
the warranty on the unit to be voided.
