AIR CONDITIONING - Rafstjorn

18.3 REPLACEMENT OF PARTS
To guarantee continuity of service to the units, it is recommended to replace some
components according to their MTBF (medium time before failure).
You can find the MTBF of the most critical components in the following table:
COMPRESSOR:
CONDENSER FAN:
EVAPORATOR FAN:
MECHANICAL THERMOSTAT:
COMPRESSOR RELAY:
30,000 operating hours
35,000 operating hours
40,000 operating hours
100,000 cycles
200,000 cycles
NOTE: the MTBFs in the table above are referred to the time during which the components
are operating. The ratio between this time and the total time of service depends on the type
of application, except for the evaporator fan (operating time is 100% of total service time).
Example:
If you esteem that the compressor will be operating 60% of the total time, the MTBF will be
30,000 working hours / 0.6 = 50,000 hours.
18.4 HOW TO CLEAN THE UNIT
Do not use acid or caustic substances to clean any part of the air conditioner.
The inner parts of the cooling unit, either on the room or cabinet side, must be cleaned with
a liquid detergent and compressed air having a pressure not higher than 4 bar, with the
unit properly earthed.
To clean the condenser remove the front panel and rinse with compressed air opposite to
the normal air flow direction through the heat exchanger.
19. Inactivity
If the unit remains inactive for longer periods of time, it is necessary to drain any condensate
residue and carry out a general cleaning procedure.
E/0304/31A/31