Lennox eCOMFORT R32 GAC 035S, Installation, Operating And Maintenance Manual

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• 75 • Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
4.1.- PREVENTIVE 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 indicated (depending on the operating
conditions maintenance every 6 months may be necessary).
Local legislation always takes precedence.
- GENERAL CONDITION OF THE CARPENTRY:
Check the state of the casing, paint, deterioration due to bumps, rust spots, leveling and supporting, state of the antivibration mounts,
if installed, screwed panels, etc.
- ELECTRICAL CONNECTIONS AND INTERCONNECTIONS:
Check the State of cables, tightening 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 flow, etc.
- COMPRESSOR:
Inspect the oil level.
Inspect the condition of the compressor mountings.
- FANS:
Check that fans turn freely and in the correct direction without excessive noises.
- CONTROL:
Check the 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 filter 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
specific 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 EVAPORATOR:
Prove the general isolation state and tightness of the water connections.
- REFRIGERANT AND WATER LEAKS:
Check the general condition of the refrigerant circuit with a refrigerant leak detector valid for R32.
Check the general condition of the refrigeration circuit. Due to the operation of the compressor, sounds and/or vibrations may be
produced, which may cause cracks that may lead to refrigerant leakage. This situation must be avoided by the manufacturer - installer
of the system. The most important objective is to guarantee minimum vibration in all directions to avoid transmitting vibrations to the
structure to which the lines are attached.
WARNING:
Vibrations: Creation of a flammable atmosphere. Carefully check the system for vibrations.
Unit working with slightly flammable refrigerant. Before any intervention on the unit, realize a refrigerant
detection with a dedicated device in order to ensure no possible presence around the unit.
During the life-time of the system, inspection and tests must be carried out in accordance with national
regulations. The information on operating inspections given in annex C of standard EN378-2 can be used
if no similar criteria exist in the national regulations.
4.- MAINTENANCE