Singer Supreme Dry SDHM-12L, Instruction Manual

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22
ENGLISH
6. Prohibition of fi re
No person carrying out work in relation to a refrigerating 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
fi re or explosion. All possible ignition sources,
including cigarette smoking, should be kept suf fi ciently far away from the site
of installation, repairing, removing and disposal, during which 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
fl ammable 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
opening 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 refrigerating equipment
Where electrical components are being changed, they shall be fi t for the pur-
pose and to the correct speci fi cation. At all times, the manufacturer’s mainte-
nance and service guidelines shall be followed. If in doubt, consult the manu-
facturer’s technical department for assistance.
The following checks shall be applied to installations using
fl ammable refriger-
ants:
–
the actual refrigerant charge 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.
– refrigerating pipe or components are installed in a position where they
are unlikely to be exposed to any substance which may corrode refriger-
ant containing components, unless the components are constructed of
materials which are inherently resistant to being corroded or are suitably
protected against being so corroded.