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INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING R32
1. GENERAL INSTRUCTIONS
•
IMPORTANT:
Prior to working on systems containing flammable refrigerants,
safety checks are necessary to ensure that the risk of ignition is minimized.
The following precautions should be complied with prior to conducting
repair work on this appliance.
•
Work procedure:
Work should be performed in a controlled way and
environment to minimize the risk of flammable gas or vapor being present
while work is performed.
•
General work area:
All maintenance staff and others working in the nearby
area should be instructed on the nature of the work being performed. Work
in confined spaces should be avoided. The area around the workspace
should be sectioned off. Ensure that the conditions within the area have
been made safe by controlling and/or removing flammable materials.
•
Checking for presence of refrigerant:
The work area should be checked with
an appropriate refrigerant detector prior to and during work to ensure the
technician is aware of potentially flammable agents in the atmosphere.
Ensure that the leak detection equipment being used is suitable for use with
flammable refrigerants (i.e., non-sparking, adequately sealed, or intrinsically
safe).
•
Presence of fire extinguisher:
If any work involving heat is to be conducted
on the refrigeration equipment or any associated parts, appropriate fire
extinguishing equipment should be readily available. Have a dry powder or
CO
2
fire extinguisher adjacent to the immediate work area.
•
No ignition sources:
No person carrying out work on a refrigeration system
that involves exposing any pipe work that contains or has contained
flammable refrigerants should use any sources of ignition in the work area or
while conducting this work. The use of any sources of ignition (such as an
open flame) could lead to the risk of fire or explosion. All possible ignition
sources, including cigarette smoking, should be kept sufficiently far away
from the site of installation, repair, removal, and disposal, during which
processes flammable refrigerant could possibly be released into the
surrounding space. Prior to work taking place, the area around the
equipment should be surveyed to ensure that there are no flammable
hazards or ignition risks. “No Smoking” signs sh
ould be displayed.
