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ENG

16. 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

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

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 CO2 fire extinguisher adjacent to

the charging area.

6. No ignition sources

No person carrying out work in relation to a refrigeration system which involves exposing any pipe work shall

use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition

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.

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:

- The charge size is in accordance with the room size within which the refrigerant containing parts are installed;

substance which may corrode refrigerant containing components, unless the components are constructed of

materials which are inherently resistant to being corroded or are suitably protected against being so 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:

being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical