Lennox FLATAIR FIC-H, Инструкция по установке, эксплуатации и обслуживанию

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4.- MAINTENANCE
4..- PREVENTIVE MAINTENANCE
PREVENTIVE MAINTENANCE PREVENTS COSTLY REPAIRS.
THIS REQUIRES PERIODIC INSPECTIONS:
- GENERAL STATE OF THE CASING:
Furniture, paint, damage due to shocks, rust spots, levelling and supporting, condition of the shock
absorbers, if installed, screwed panels, etc.
- ELECTRICAL CONNECTIONS:
State of hoses, tightness of screws, earthing, current consumption of the compressor and fans and check
that the unit is receiving the correct voltage.
- COOLING CIRCUIT:
Check that the pressures are correct and that there are no leaks. Check that there is no damage to the
pipe insulation, that the condition of the coils is good and that they are not blocked by bits of paper or
plastic drawn in by the air flow, etc.
- COMPRESSOR:
If a sight glass is fitted, check the oil level.
Check the condition of the silentbloc mountings.
- FANS:
Check that fans turn freely and in the correct direction without excessive noise.
- CONTROL:
Check Set Points and normal operation.
4.2.- 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 component 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 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 filings.
- All brazing must be carried out in a nitrogen atmosphere to prevent corrosion forming.
- Use silver alloy brazing rod .
- Take special care that the flame from the torch is directed away from the component to be welded and cover with a wet rag to
prevent overheating.
Silver alloy welding rod
Direction of the flame
Component to be welded
Wet rag
Nitrogen
- AIR FILTER :
The air filter can be removed through the side by sliding it over the rail or downwards.
(See figure).
For downwards removal, remove the two profiles that support it (depending on the model)
which are under the filter guide rail and screwed onto the unit.
SIDE REMOVAL
DOWN REMOVAL