Electra Air-Conditioning MQH 10T, Installation And Maintenance Manual

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9 MAINTENANCE
Carefully read the "Safety" section of this manual before
carrying out any maintenance operations.
Planned maintenance
Operations
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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 that the fins of the
external coil are clean (if any)
Check the operation of the
oil heaters (if any)
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)
Do not discharge the refrigerant into the atmo-
sphere while the refrigeration circuits are
being drained. Use appropriate recovery equip-
ment. When the recovered refrigerant cannot
be re-used, return it to the manufacturer.
Do not throw away the waste oil of the
compressor, because it contains refrigerant in
solution. The waste oil must be returned to the
manufacturer.
Unless otherwise specified, the operations described below
may be carried out only by a trained maintenance operator.
9.1 General requirement
The units have been designed for continuous 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 the authorised Service Centers.
It is the responsibility of the User to meet these maintenance
requirements and/or to enter into an agreement with one of
the Authorised Service Centers, so as to properly safeguard
the operation of the appliance.
The provisions of this section apply only to standard units;
according to the order requirements, other documentation
may be added, concerning any modifications or supplemen-
tary accessories.
Maintenance inspections must be carried out according 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 inspections. If you are in doubt, please contact the
authorised Service Centre.
9.2 Planned maintenance
Maintenance
English
During the warranty period, in case of damage or failures
caused by improper maintenance the manufacturer will not
refund the costs incurred to repair the appliance to its original
state.