Hantech 10474165 Bedienungsanleitungen Seite 14

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
orCO2 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 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 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 that 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 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;
– 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.
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
continueoperation, an adequate
temporary solution shall be used. This
shall be reported to the owner of the
equipment so all parties are advised.
– 14 –