Airwell SWS 2652 HFС 134a [75/82] Maintenance
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Airwell SWS 2652 HFС 134a [75/82] Maintenance

Airwell SWS 2652 HFС 134a [75/82] Maintenance
Page 74
MMaaiinntteennaannccee
9 MAINTENANCE
CCaarreeffuullllyy rreeaadd tthhee ““SSaaffeettyy”” sseeccttiioonn ooff tthhiiss mmaannuuaall
bbeeffoorree ccaarrrryyiinngg oouutt aannyy mmaaiinntteennaannccee ooppeerraattiioonnss..
DDoo nnoott ddiisscchhaarrggee tthhee rreeffrriiggeerraanntt iinnttoo tthhee aatt--
mmoosspphheerree wwhhiillee tthhee rreeffrriiggeerraattiioonn cciirrccuuiittss
aarree bbeeiinngg ddrraaiinneedd.. UUssee aapppprroopprriiaattee rreeccoovv--
eerryy eeqquuiippmmeenntt..
WWhheenn tthhee rreeccoovveerreedd rreeffrriiggeerraanntt ccaannnnoott bbee
rree--uusseedd,, rreettuurrnn iitt ttoo tthhee mmaannuuffaaccttuurreerr..
DDoo nnoott tthhrrooww aawwaayy tthhee wwaassttee ooiill ooff tthhee
ccoommpprreessssoorr,, bbeeccaauussee iitt ccoonnttaaiinnss rreeffrriiggeerraanntt
iinn ssoolluuttiioonn..
TThhee wwaassttee ooiill mmuusstt bbee rreettuurrnneedd ttoo tthhee mmaannuu--
ffaaccttuurreerr..
Unless otherwise specified, the operations described
below may be carried out only by a trained mainte-
nance operator.
9.1 General requirements
Itelco-Industry units have been designed for continu-
ous operation, providing that they are subjected to
regular maintenance, 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 Itelco-Industry ’s authorised Service 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 Itelco-Industry ’s Service Centers, so
as to properly safeguard the operation of the appli-
ance.
During the warranty period, in case of damage or
failures caused by improper maintenance, Itelco-In-
dustry will not refund the costs incurred to repair the
appliance in its original state.
The provisions of this section apply only to standard
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 Itelco-Indus-
try Service Centre.
Scheduled Maintenance
Operations
DDaaiillyy
WWeeeekkllyy
MMoonntthhllyy
BBeeggiinnnniinngg ooff
sseeaassoonn
EEnndd ooff sseeaassoonn
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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Manuale SWS-SWR EN2.qxp 19/11/06 11:21 Pagina 74

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