Lennox GAH 020S, Installation, Operating And Maintenance Manual

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Installation manual /
eCOMFORT-MIL150E-0916 / 05/2017
4.1.- PREVENTIVE MAINTENANCE
4.- MAINTENANCE
PREVENTIVE 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.
REFRIGERANT 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
fl ow, etc.
COMPRESSOR:
Inspect the oil level.
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 fi 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 speci
fi c 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.
When carrying out maintenance works on these units, please make a correct segregation of the non-hazardous waste generated:
insulation, air
fi lters, plastic or metallic elements, packaging, etc., as well as waste considered hazardous: oils, fi lters and rags
Impregnated with oils, welding elements such as fi ller material, strippers, electrical and electronic waste, batteries, lamps, etc.,
these must be managed by an authorized dealer.
The refrigerant gas can be reused, or collected in a bottle and managed as hazardous waste by an authorized dealer.