Infiniton PAC-W12 Manual De Usuario página 24

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. nonspar-
king, 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,
appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or
CO2 fire 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 in-
stallation, 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 equip-
ment 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.
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;
 the ventilation machinery and outlets are operating adequately and are not obstructed;
 if an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the
presence of refrigerant;
 marking to the equipment continues to be visible and legible. Markings and signs that are
illegible shall be corrected;
 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 suitably protected against being so corroded.
CHECKS TO ELECTRICAL DEVICES
Repair and maintenance to electrical components shall include initial safety checks and com-
ponent inspection procedures. If a fault exists that could compromise safety, then no electri-
cal 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.