36
4.1.- PREVENTIVE MAINTENANCE
4.- MAINTENANCE
EPREVENTIVE MAINTENANCE PREVENTS COSTLY REPAIRS.
We recommend regular and thorough servicing of the LENNOX unit. It is therefore advisable to ask your dealer
about maintenance contracts. Check maintenance of the following points (depending on the operating conditions
maintenance every 6 months may be necessary).
Local legislation always takes precedence.
-- GENERAL STATE OF THE CASING:
Casing, paint, deterioration due to bumps, rust spots, leveling and supporting, state of the antivibration mounts, if installed,
screwed panels, etc.
- ELECTRICAL CONNECTIONS:
State of cables, tightness of screws, grounding, current draw of the compressor and fans and checking that the unit is receiving
the correct voltage.
- COOLING CIRCUIT:
Check that pressure values are correct and that there are no leaks. Check that there is no damage to the pipe insulation, that
the state of the batteries is correct and that there are no chips or clogs retained by the air ow, etc.
- COMPRESSOR:
Inspect the oil level, if sight glass is present.
Inspect the state of the compressor mountings.
- FANS:
Check that fans turn freely and in the correct direction without excessive noises.
- CONTROL:
Check Set Points and normal operation.
- WATER:
If the installation contains anti-freeze, regularly check the state of the anti-freeze as well as the cleanliness of the water.
- WATER FILTER:
Clean the water inlet lter if necessary.
- WATER PUMP:
When the installation is going to work with percentages of glycol up to 20% and water temperatures below -5ºC, even do we
use a specic closing for the water pump, it is advisable to clean the water pump’s closing every year and a half, in order to
avoid leaks by crystallization.
- PLATE EXCHANGER:
Prove the general isolation state and tightness of the water connections.
- CHECK FOR REFRIGERANT LEAKAGE AND WATER LEAKAGE.
4.2.- CORRECTIVE MAINTENANCE
IIMPORTANT MAKE SURE THAT THE UNIT IS COMPLETELY DISCONNECTED FROM THE POWER SUPPLY WHEN
CARRYING OUT ANY TYPE OF WORK ON THE MACHINE
If some component in the cooling circuit must be replaced, follow these recommendations:
- Always use original replacement parts.
- Regulation prohibits the release on the 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 lings.
- All brazing must be carried out in a nitrogen atmosphere to prevent corrosion from forming.
- Use silver alloy brazing rod.
- Take special care that the ame from the torch is aimed in the opposite direction from the component to be welded and is
covered with a wet rag in order to avoid overheating.
Component to be welded
Nitrógen
Wet rag
Direction of the ame
Silver alloy welding rod
To Next Page
Loading...
Need help?
General