
19
5. Presenceoreetinguisher
anhotoristobeconductedon
the refrigeration equipment or any
associatedartsaroriatere
etinguishingeuimentshallbe
aailabletohandaeadroder
orreetinguisheradacentto
the charging area.
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
containedammablererigerantshall
use any sources of ignition in such a
manner that it may lead to the risk of
reorelosionllossibleignition
sources, including cigarette smoking,
shouldbeetsucientlaraa
from the site of installation, repairing,
removing and disposal, during which
ammablererigerantcanossibl
bereleasedtothesurrounding
space. Prior to work taking place, the
areaaroundtheeuimentistobe
surveyed to make sure that there are
noammablehazardsorignitionriss
omoingsignsshallbedislaed
7. Ventilated area. Ensure that the area
is in the open or that it is adequately
entilatedbeorebreainginto
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
rerigerantandreerableelit
externally into the atmosphere.
8. Checks to the refrigeration equipment.
Where electrical components are
beingchangedtheshallbet
for the purpose and to the correct
secicationtalltimesthe
manufacturer’s maintenance and
sericeguidelinesshallbeolloed
indoubtconsultthemanuacturers
technical department for assistance.
heolloingchecsshallbealied
toinstallationsusingammable
rerigerants
– 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
andarenotobstructed
– If an indirect refrigerating circuit is
beingusedthesecondarcircuit
shallbechecedortheresence
of refrigerant;
– Marking to the equipment continues
tobeisibleandlegiblearings
andsignsthatareillegibleshallbe
corrected;
– Refrigeration pipe or components
are installed in a position where
theareunlieltobeeosedto
ansubstancehichmacorrode
refrigerant containing components,
unless the components are
constructed of materials which
areinherentlresistanttobeing
corrodedoraresuitablrotected
againstbeingsocorroded
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
sulshallbeconnectedtothecircuit
until it is satisfactorily dealt with. If the
aultcannotbecorrectedimmediatel
butitisnecessartocontinue
operation, an adequate temporary
solutionshallbeusedhisshallbe
reported to the owner of the equipment
so all parties are advised.
nitialsaetchecsshallinclude
hatcaacitorsaredischargedthis
shallbedoneinasaemannertoaoid
ossibilitosaring
That there no live electrical
components and wiring are exposed
while charging, recovering or purging
the system;
That there is continuity of earth
bonding
Repairs to sealed components
1. During repairs to sealed components,
allelectricalsuliesshallbe
disconnected from the equipment
beingoreduonriortoanremoal
osealedcoersetcitisabsolutel
necessary to have an electrical supply
to equipment during servicing, then
a permanently operating form of leak
detectionshallbelocatedatthemost
critical point to warn of a potentially
hazardous situation.