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12 - MAINTENANCE
Mesh fi lter
■ It is also necessary to install a fi lter in the hydraulic power
supply to the unit in order to prevent clogging of the plate
exchanger.
■ Optionally, this fi lter can be supplied for 30PA by kit.
■ The fi ltering mesh must be removed and cleaned in order to
clean the fi lter.
Dehydrating fi lter
■ The fi lter function is to keep the cooling circuit clean and
without humidity, neutralising the acids that can be found in
the cooling circuit.
■ Verify dirt measuring the diff erence in temperature at the piping
level, at the inlet and at the outlet of the dehydrant.
■ If necessary, replace.
Diff erential
pressure switch
Condensate drain pan
■ Check that the condensate pan is suffi ciently clean.
■ Check that the drain is not clogged.
■ Cleaning of the pan can be done with water and non-abrasive
detergent.
Centrifugal fan (STD version)
■ Verify that the turbine and the motor remain clean.
■ Foresee having a spare belt set for the fans.
■ The motors and the fans have bearings that have been lubricated
and sealed and, thus, do not need further lubrication.
Plate
Dehydrating
exchanger
fi lter
Servomotor (optional)
In units with a condensation
pressure regulation damper
(in the STD version), it is
advisable to check the state
of the servomotor.
Filter in the return air (optional)
■ Clean usually. Depending on the installation conditions, the fi lter
aspect must be examined to defi ne the cleaning periodicity.
■ Gravimetric fi lters: Cleaning the fi ltering mesh can be done
with a household vacuum cleaner, or by submerging it in water.
Filters are moved by lifting
the tab and dragging
Compressor
In the case of compressor replacement:
■ Disconnect the unit from power supply.
■ Completely empty the load of refrigerant using a specifi c
recovery unit for R-410A
■ Disconnect electrically the compresor.
■ Carefully unsolder the suction and discharge piping.
■ The compressor is fi xed onto the platform with 4 screws.
Unscrew the fi xings.
■ Place the new compressor and check that it has a suffi cient
oil charge.
Warning: when tightening the compressor screws, please
consult the maximum torque that can be applied.
If a torque wrench is not available, tighten them until noticing
resistance, then tighten the screws by turning them 3/4 of a
revolution.
■ Solder the suction and discharge piping.
■ Connect the compressor in accordance with the circuit diagram.
Servomotor
21
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