Avalla S-80 Bedienungsanleitung Seite 15

Servicing safety precautions
Please carefully follow this guidance when undertaking any servicing on this
appliance. Any servicing must be carried out by a suitably qualified and registered
individual.
Prior to beginning work, safety checks are necessary to ensure that the risk of
ignition is minimized. For repair to the refrigerating system, all of the following
precautions must be complied with prior to conducting work.
Work Procedure
Work must be undertaken under a controlled procedure to minimize the risk of a
flammable gas or vapour being present while the work is being performed.
General Work Area
All maintenance staff and others working in the local area must be instructed on
the nature of work being carried out. Work in confined spaces must be avoided.
The area around the workspace must be sectioned off. Ensure that the conditions
within the area have been made safe by control of flammable material.
Checking for Presence of Refrigerant
The area must 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, e.g. no sparking, 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 must 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
must 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 must 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 must
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 must be fit for the purpose
and to the correct specification. At all times the manufacturer's maintenance
and service guidelines must be followed. If in doubt consult the manufacturer's
technical department for assistance. The following checks must 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
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