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Installation Manual •
COMPACTAIR ADV IOM-MIL157E-0418
4.- MAINTENANCE
4.3.- CORRECTIVE MAINTENANCE.
IMPORTANT:
MAKE SURE THAT THE UNIT IS FULLY DISCONNECTED FROM THE POWER SUPPLY WHEN
CARRYING OUT ANY TYPE OF WORK ON THE MACHINE.
If any
componen
t in the cooling circuit
is to be replaced
, follow these recommendations:
- Always
use original replacement parts
.
- If the component can be isolated, it is not necessary to remove the entire
refrigerant charge
, if the component cannot be isolating and the refrigerant
charge is removed, it should be removed through the Schrader valves located in the outdoor section. Create a slight vacuum as a safety measure.
-
Regulation imposes the recovery of refrigerant fl uids and prohibits the release of refrigerant into the atmosphere
.
- If cuts must be made in the pipe work, use pipe cutters.
Do not use saws or any other tools that produce fi lings
.
-
All brazing must be carried out in a nitrogen atmosphere
to prevent corrosion forming.
- Use
silver alloy brazing rod
.
-
Take special care that the fl ame
from the torch is directed away from the component to be welded and cover with a wet rag to prevent overheating.
PRECAUTIONS TO BE TAKEN WHEN USING OF R-410A REFRIGERANT:
R-410A refrigerant is used in the unit, the following standard precautions for this gas should therefore be taken:
- The Vacuum Pump must have a Check Valve or Solenoid Valve
fi
tted.
- Pressure Gauges and Hoses for exclusive use with R-410A Refrigerant should be used.
- Charging should be carried out in the Liquid Phase.
- Always use scales to weigh-in charge
- Use the Leak Detector exclusive for R-410A Refrigerant.
- Do not use mineral oil, only synthetic oil to ream, expand or make connections.
- Keep pipes wrapped before using them and be very thorough about any possible dirt (dust,
fi
lings, burrs, etc.).
- When there is a leak, collect what remains of the charge, create a vacuum in the unit and completely recharge with new R-410A Refrigerant.
- Brazing should always be carried out in a nitrogen atmosphere.
- Reamers should always be well sharpened.
-
Take very special care if 4-way or check valves are to be replaced
since these have internal components that are very heat-sensitive such as
plastic, te
fl
on, etc.
- If a
compressor is to be replaced
, disconnect it electrically and un-braze the suction and discharge lines. Remove the securing screws and
replace the old compressor with the new one. Check that the new compressor has the correct oil charge, screw it to the base and connect the lines
and electrical connections.
-
Evacuate above and below through the Schrader valves
of the outdoor unit until -750 mm Hg is reached. Once this level of vacuum has been
reached, keep the pump running for at least one hour.
DO NOT USE THE COMPRESSOR AS A VACUUM PUMP.
-
Charge the unit with refrigerant
according to the data on the Rating Plate for the unit and
check that there are no leaks
.
Silver alloy welding rod
Direction of the
fl
ame
Component to be welded
Wet rag
Nitrogen
WASTE MANAGEMENT:
All the components derived from the recycling of the unit should be managed according local legislation, and have to be classi
fi
ed and sepa-
rated while dealt by authorized waste manager or be left in local waste facilities.
Refrigerant
fl
uids, electronic boards, heat exchangers and the oil extracted from the refrigerant circuit, as well as the oil recipients used must
be recycled as hazardous waste according the local normative through an authorized waste manager or be left in local waste facilities. The
rest of the components considered as non-hazardous wastes must be recycled according to the corresponding norms.
At the end of its life, the equipment should be recycled in local waste facilities or by an authorized waste manager.
