Periodic Checks - Swegon BlueBox Omega Sky Installation, Use And Maintenance Manual

8.4 Periodic checks

Carry out periodic checks to make sure the unit is working correctly:
OPERATION
Check the operation of all the control and safety equipment as described previously.
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.
Check the refrigerant charge through the liquid sight glass.
Make sure there are no oil leaks from the compressor.
Make sure there are no water or water/glycol mixture leaks in the hydraulic circuit.
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.
Check the filling of the water circuit.
Check that the differential water pressure switch, or the flow switch (where present), is working cor-
rectly.
Check the crankcase heaters of the compressors.
Clean the metal filters in the hydraulic pipes.
Clean the ventilation filters of the electrical control panel.
Clean the filter grilles in the heat sinks featured in the compressor inverters installed at the back of
the electrical panel.
Check the moisture indicator on the liquid sight glass (green = dry, yellow = wet). If the indicator is
not green, as indicated on the sight glass sticker, replace the filter.
Check that the noise emitted by the unit is normal.
Test performed to check correct operation of the refrigerant leak detection sensor and its safety chain
connected downline
Calibration of the refrigerant leak detector sensor
Replacement of the refrigerant leak detector sensor
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.
66
Translation from original instructions We reserve the right to make changes without any prior notice.
RECOMMEN-
DED FREQUEN-
CY
Monthly
Monthly
Monthly
Monthly
Monthly
Seasonal
Monthly
Monthly
Monthly
Monthly
Monthly
Monthly
4 months
4 months
Yearly
Every 3 years
Every 5/6 years