12. M
AINTENANCE
Air fi lters
- Clean regularly. Depending on the installation conditions, the
fi
lter
aspect must be examined to de
fi
ne the cleaning periodicity.
- Gravimetric
fi
lters. Cleaning the
fi
ltering mesh can be done with a
household vacuum cleaner, or else by submerging it in water.
COOLING mode
HEATING mode
Compressor
Aspiration pressure
bar
Compressor
Aspiration pressure
bar
Aspiration temp. (1)
ºC
Aspiration temp. (1)
ºC
Condens. pressure
bar
Condens. pressure
bar
Condens. temp. (2)
ºC
Condens. temp. (2)
ºC
Air
condenser
Gas inlet temperature
ºC
Air
evaporator
Liquid inlet temperature ºC
Liquid outlet temp. (3)
ºC
Gas outlet temp. (4)
ºC
Air inlet temperature
ºC
Air inlet temperature
ºC
Outdoor temperature
ºC
Outdoor temperature
ºC
Air outlet temperature
ºC
Air outlet temperature
ºC
Air
evaporator
Air inlet temperature
ºC
Air
condenser
Air inlet temperature
ºC
Air outlet temperature
ºC
Air outlet temperature
ºC
Liquid inlet temperature ºC
Gas inlet temperature
ºC
Evap. outlet temp. (4)
ºC
Liquid outlet temp. (3)
ºC
Undercooling (2) - (3)
ºC
Undercooling (2) - (3)
ºC
Overheating (4) - (1)
ºC
Overheating (4) - (1)
ºC
Ope rat iona l che ck s
Check the unit operation by verifying the electronic control and the
safety devices.
It is also recommendable to create a report, taking note of the date,
which includes the following information:
- the nominal power,
- current absorbed by the compressors, fans, and other electric
components,
- the
signi
fi
cant temperatures of the cooling circuit (see attached table),
- and other aspects that are considered interesting, such as, for
example, alarms detected by the electronic control of the unit.
The recording of these parameters whilst the unit is running allows
controlling the installation performance and it is the best possible way
to avoid breakdowns since the analysis of these data makes early
detection of anomalies possible or the provision of the necessary means
available to ensure that they do not take place.
The minimal maintenance operations and their periodicity will be made
according to the national regulations.
Any intervention on the electric cooling components must be made by
a quali
fi
ed and authorized technician.
Technicians who intervene with the unit must use the necessary safety
equipment (gloves, goggles, insulating clothing, safety shoes, etc.).
Furthermore, if working around sources of significant noise, we
recommend the use of noise-dampening headgear.
V-220004
Caution: Before intervening in the unit, cut off main
power.
General recommendations:
- Do not lean on the unit. A platform must be used to work on a level.
- Do not lean on the copper refrigerant tubes.
- Keep the unit clean.
- Keep the space surrounding the unit clean and cleared in order to
avoid accidents and ensure the proper ventilation of the coil.
- Perform a visual (remains of water or oil below or around the unit)
and auditory inspection of the entire installation.
- In general, a corrosion control must be performed on the metallic
parts of the unit (frame, bodywork, exchangers, electric panel, etc.).
- Check that the insulation foam is not unstuck or torn.
- All the electric connection states must be checked as well, as well
as the air tightness of the different circuits.
Filter removal:
The
fi
lter is assembled over a steel metal pro
fi
le. By dragging a tab, it
slides laterally by the rail. Then, the
fi
lter is removed vertically.
Frame in
displacement
Tab for
sliding
Split-system cooling units
and heat pumps
16