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Important Safety Information
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
Information on servicing
1. 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 minimized. For repair to the refrigerating system, the following
precautions shall be complied with prior to conducting work on the system.
2. Work procedure: 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.
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 work space shall be
sectioned off. Ensure that the conditions within the work area have been made safe by removing all flammable
material.
4. Checking for the 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 and intrinsically safe.
5. Presence of 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 to hand. Have a dry powder or
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fire extinguisher adjacent to the work area.
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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 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 there are no flammable hazards or ignition risks. No
smoking signs shall be displayed.
7. 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 preferable expel it externally into
the atmosphere.
8. Checks to the refrigeration equipment: Where electrical components are being changed, they shall be fit for the
purpose and to the correct specification. At all times the manufacturer's maintenance and service guidelines shall
be followed. If in doubt consult the manufacturer's technical department for assistance. The following checks shall
be applied to installations using flammable refrigerants:
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The charge size is in accordance with the room size within which the refrigerant containing parts are
installed.
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The ventilation machinery and outlets are operating adequately and are not obstructed.
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If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of
refrigerant.
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Marking to the equipment continues to be visible and legible. Markings and signs that become illegible must
be corrected.
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Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any
substance which may corrode refrigerant containing components, unless the components are constructed of
materials which are inherently resistant to being corroded or are suitable protected against being corroded.
9. Checks to electrical devices: Repair and maintenance to electrical components shall include initial safety checks
and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply
shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but
it is necessary to continue operation, an adequate temporary solution shall be used. This shall be reported to the
owner of the equipment so all parties are advised. Initial safety checks shall include:
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That capacitors are discharged. This shall be done in a safe manner to avoid possibility of sparking.
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That no live electrical components and wiring are exposed while charging, recovering or purging the system.
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That there is continuity of earth bonding.
SAVE THESE INSTRUCTIONS!
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