Instructions For Repairing Appliances Containing R32 - NewAir NAC14KWHH2 Owner's Manual

INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING R32

• Checks to the area: Prior to beginning work on systems containing
flammable refrigerants, safety checks are necessary to ensure that the risk of
ignition is minimised. For repair to the refrigerating system, the following
precautions shall be complied with prior to con-ducting work on the system.
• Work procedure: Work shall be undertaken under a controlled procedure so
as to minimise the risk of a flammable gas or vapour being present while the
work is being performed.
• General work area: All maintenance staff and others working in the local
area shall be instructed on the nature of work being carried out. Work in
confined spaces shall be avoided. The area around the workspace shall be
sectioned off. Ensure that the conditions within the area have been made
safe by control of flammable material.
• Checking for presence of refrigerant: The area shall be checked with an
appropriate refrigerant detector prior to and during work, to ensure the
technician is aware of potentially flammable atmospheres. 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 hot work is to be conducted on the
refrigeration equipment or any associated parts, propriate fire extinguishing
equipment shall be available to hand. Have a dry powder or CO
extinguisher adjacent to the charging area.
• No ignition sources: No person carrying out work in relation to a
refrigeration system which involves exposing any pipe work that contains or
has contained flammable refrigerant shall use any sources of ignition in such
a manner that it may 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, repairing, removing and disposal, during which
flammable refrigerant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed
to make sure that there are no flammable hazards or ignition risks. "No
Smoking" signs shall be displayed.
• Ventilated area: Ensure that the area is in the open or that it is adequately
ventilated before breaking into the system or conducting any hot work. A
degree of ventilation shall continue during the period that the work is
carried out. The ventilation should safely disperse any released refrigerant
and preferably expel it externally into the atmosphere.
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