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

4.- MAINTENANCE

When carrying out maintenance works on these units, please make a correct segregation of the non-hazardous waste generated: insu-
lation, air filters, plastic or metallic elements, packaging, etc., as well as waste considered hazardous: oils, filters and rags Impregnated
with oils, welding elements such as filler material, strippers, electrical and electronic waste, batteries, lamps, etc., these must be mana-
ged by an authorized dealer.
The refrigerant gas can be reused, or collected in a bottle and managed as hazardous waste by an authorized dealer.
WARNING: Conductor cables: Electrical shock. Follow lockout / tagout procedure and national regulations before
performing any maintenance or service work on the system.
Screwed electrical connections must be used in all applications. Refer to original equipment wiring diagrams.
Electrical connections must be made by qualified electrical personnel.
WARNING:
Ignition source in a potentially flammable atmosphere: Fire hazard. When opening the system, the atmosphere
could be flammable. All electrical components that are a source of ignition must always be turned off during
service and maintenance. Ensure that the surface temperatures of the components never exceed the limits set by
the applicable safety standard.
Air - flammable refrigerant mixture: Fire hazard. Remove all refrigerant before opening the system. Make sure
to remove refrigerant from all components (heat exchangers, refrigerant accumulators,...). Flush system and
components with inert gas before carrying out any work.
WARNING:
Open flame in a potentially flammable atmosphere: Fire hazard. The area should be checked with an appropriate
refrigerant detector prior and during work, to ensure the technician is aware of potentially toxic or flammable
atmospheres. Ensure that the leak detection equipment used is suitable for use with all applicable refrigerants.
Personnel performing work on a refrigeration system that involves exposing the pipework shall be avoid using any
source of ignition in a way that could lead a fire hazard. All sources of ignition shall be kept sufficiently far from the
site of installation, repair, removal or disposal during the entire time when refrigerant could be released into the
surrounding space.
Open flames and smoking are strictly prohibited at all times.
During service made sure that:
- the area is well ventilated.
- the materials and equipment used are suitable for use in flammable conditions.
- only non-sparking tools are used.
- antistatic gloves and clothing are used.
- build-up of electrostatic charges is avoided.
- no unshielded or naked flame is allowed.
- if parts of the refrigeration system are charged with flammable refrigerant, be sure that all valves are tightly
closed and that the open pipes after the valves are free of refrigerant and oil.
IMPORTANT:
- Only qualified and trained personnel can repair or carry out work on units that use flammable refrigerant. Personnel working on
maintenance, repair and decommissioning must be properly trained. Any work procedure that affects safety (for example; breaking into
the refrigeration circuit, opening sealed components, opening ventilated enclosures,...) must only be carried out by qualified and trained
personnel in accordance with national certification systems or others equivalents.
- It is recommended that, to carry out an intervention, the staff have a work procedure:
* If any work is to be conducted on the refrigeration systems, appropriate fire-fighting equipment (dry powder extinguishers, CO
extinguishers,...) shall be provided and be confirmed that it is available near the work area .
* Before starting work on these systems with flammable refrigerants, safety checks are necessary to ensure that the risk of ignition
is minimised.
* Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapour being present while
the work is being performed.
- It is recommended that the service technician perform a risk analysis to assess all possible risks prior to any repair work.
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
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