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Maintenance
Planned maintenance
9 MAINTENANCE
Carefully read the “Safety” section of this manual
before carrying out any maintenance operations.
Do not discharge the refrigerant into the at-
mosphere while the refrigeration circuits
are being drained. Use appropriate recov-
ery equipment.
When the recovered refrigerant cannot be
re-used, return it to the manufacturer.
Do not throw away the waste oil of the com-
pressor, because it contains refrigerant in
solution.
The waste oil must be returned to the manu-
facturer.
Unless otherwise specified, the operations described
below may be carried out only by a trained mainte-
nance operator.
9.1 General requirements
Units have been designed for continuous operation,
providing that they are subjected to regular mainte-
nance, within the limits specified in this manual. Each
unit must be serviced according to the programme by
the User/Customer, and must be inspected at regular
intervals by the personnel of one of authorised Serv-
ice Centers.
It is the responsibility of the User to meet these main-
tenance requirements and/or to enter into an agree-
ment with one of authorised Service Centers, so as to
properly safeguard the operation of the appliance.
During the warranty period, in case of damage or
failures caused by improper maintenance, manufac-
turer will not refund the costs incurred to repair the
appliance in its original state.
The provisions of this section apply only to stand-
ard units; according to the order requirements, other
documentation may be added, concerning any mod-
ifications or supplementary accessories.
9.2 Planned maintenance
Maintenance inspections must be carried out accord-
ing to the program below, by a qualified person.
As a general rule, units cannot be repaired directly
by the user, who shall not try to service or repair any
failures or anomalies identified during daily inspec-
tions. If you are in doubt, please contact authorised
Service Centre.
Operations
Daily
Weekly
Monthly
Beginning of season
End of season
Check the temperature
of the leaving fluid
Check the pressure drops
in the heat exchanger
Check for electric
absorption
Check suction pressure
and temperature
Check delivery pressure
and temperature
Check the oil level
in the compressor
Check that there are no gas
bubbles in the liquid line
Check that the fins of the
external coil are clean (if any)
Check the operation
of the oil heaters
Check the remote
control switches
Check the operation
of the LP pressure switch
Check the operation
of the HP pressure switch
Check the insulation
of the heat exchanger
Check that terminals
are tightened
Check that the terminals’
screws are tightened
Clean the exterior of the
unit with water and soap
Check the density
of the antifreeze (if any)
Check the operation
of the flow switches
Check the operation
of the solenoid valve
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