Translation from original instructions
Installation manual
39
We reserve the right to make changes without any prior notice.
UATYQ*Y1
Packaged Rooftop
4P522680-1
7.4 Periodic checks
Carry out periodic checks to make sure the unit is working correctly:
OPERATION
RECOMMENDED
FREQUENCY
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
boards of the compressors. The moving and fixed contacts of the contactors must be cleaned
periodically and should be replaced whenever they show signs of deterioration.
Monthly
Check the refrigerant charge through the liquid sight glass.
Monthly
Make sure there are no oil leaks from the compressor.
Monthly
Check the crankcase heaters of the compressors.
Monthly
Clean the finned coil by following the instructions in the “External cleaning” section according
to the type of coil installed
Monthly
Clean the air filters
Monthly
Clean the ventilation filters of the electrical control panel.
Monthly
Carry out the defrosting test.
Monthly
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.
4 months
Check the condition, fixing and balance of the fans.
4 months
Check that the noise emitted by the unit is normal.
4 months
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 longer intervals on periodic checks than the recommended ones, also
with reference to the installed safety devices and the refrigerant charge present, without voiding the
warranty on the unit.
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