Premium levella PRF36DX Manual De Instrucciones página 3

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 toxic or
atmospheres. Ensure that the leak detection
equipment being used is suitable for use with all
applicable refrigerants, i.e., nonsparking,
adequately sealed, or intrinsically safe.
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
ventil lation shall continue during the period that the
work is carried out. The ventilation should safely
disperse any rel leased refrigerant and preferably
expel it externally into the atmosphere.
Detection of ammable refrigerants: Under no
circumstances shall potential sources of ignition be
used in the searching for or detection of refrigerant
leaks. A halide torch (or any other detector using a
naked ame) shall not be used.
SERVICING
The following checks shall be applied to installations
using FLAMMABLE REFRIGERANTS:
a) the actual REFRIGERANT CHARGE is in accordance
with the room size within which the refrigerant
containing parts are installed;
b) the ventilation machinery and outlets are operating
adequately and are not obstructed;
c) if an indirect refrigerating circuit is being used, the
secondary circuit shall be checked for the presence of
refrigerant;
d) marking to the equipment continues to be visible
and legible. Markings and signs that are illegible shall
be corrected;
e) refrigerating 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.
Initial safety checks shall include:
a) that capacitors are discharged: this shall be done in
a safe manner to avoid possibility of sparking;
b) that no live electrical components and wiring are
exposed while charging,recovering or purging the
system;
c) that there is continuity of earth bonding.
lammable
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REPAIRS COMPONENTS
During repairs to sealed components, all electrical
supplies shall be disconnected from the equipment
being worked upon prior to any removal of sealed
covers, etc. If it is absolutely necessary to have an
electrical supply to equipment during servicing, then
a permanently operating form of leak detection shall
be located at the most critical point to warn of a
potentially hazardous situation.
Particular attention shall be paid to the following to
ensure that by working on electrical components,
the casing is not altered in such a way that the level
of protection is affected. This shall include damage
to cables, excessive number of connections,
terminals not made to original speci cation, damage
to seals, incorrect tting of glands, etc.
Ensure that the apparatus is mounted securely.
Ensure that seals or sealing materials have not
degraded to the point that they no longer serve the
purpose of preventing the ingress of ammable
atmospheres. Replacement parts shall be in
accordance with the manufacturer's speci cations.
Do not apply any permanent inductive or capacitance
loads to the circuit without ensuring that this will not
exceed the permissible voltage and current permitted
for the equipment in use.
Intrinsically safe components are the only types that
can be worked on while live in the presence of a
ammable atmosphere. The test apparatus shall be
at the correct rating.
Replace components only with parts speci ed by the
manufacturer. Other parts can result in the ignition
of refrigerant in the atmosphere from a leak.
Replace components only with parts speci ed by the
manufacturer. Other parts can result in the ignition
of refrigerant in the atmosphere from a leak.
LABELLING
Equipment shall be labelled stating that it has been
de-commissioned and emptied of refrigerant. The
label shall be dated and signed. For appliances
containing FLAMMABLE REFRIGERANTS, ensure that
there are labels on the equipment stating the
equipment contains FLAMMABLE REFRIGERANT.