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SAFETY PRECAUTIONS
Safety precautions for using R32 refrigerant
The basic installation work procedures are the same as the conventional refrigerant (R22 or R410A). However, pay attention to the
following points:
1 Transport of equipment containing flammable refrigerants
Attention is drawn to the fact that additional transportation regulations may exist with respect to equipment containing flammable
gas. The maximum number of pieces of equipment or the configuration of the equipment permitted to be transported together will
be determined by the applicable transport regulations.
2 Equipment signs
Signs for similar appliances (containing flammable refrigerants) used in a work area generally are addressed by local regulations
and give the minimum requirements for the provision of safety and/or health signs for a work location. All required signs are to be
maintained and employers should ensure that employees receive suitable and sufficient instruction and training on the meaning
of appropriate safety signs and the actions that need to be taken in connection with these signs.
The effectiveness of signs should not be diminished by too many signs being placed together. Any pictograms used should be as
simple as possible and contain only essential details.
3 Disposal of equipment containig flammable refrigerants
In compliance with national regulations.
4 Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer's instructions.
5 Storage of packed (unsold) equipment
• Storage package protection should be constructed so that mechanical damage to the equipment inside the package will
not cause a leak of the refrigerant charge.
• The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations.
6 Information on servicing
6.1. Checking the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of
ignition is minimised. To repair the refrigerating system, the following precautions should be complied with prior to conducting
work on the system.
6.2. Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the risk of flammable gas or vapour being present
while the work is being performed.
6.3. 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.
6.4. Checking for leakage 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. nonsparking,
adequately sealed or intrinsically safe.
6.5. Fire extinguisher
• If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing
equipment shall be available.
• Have a dry powder or CO
6.6. 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.
3
HO2019292HA
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WARNING
fire extinguisher adjacent to the charging area.
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