Nordic Home AC-511 Bedienungsanleitung Seite 36

3. Disposal of equipment containing flammable refrigerants
See national regulations.
4. Storage of equipment/appliances
Equipment should be stored in accordance with the manufacturer's instructions.
5. Storage of packed (unsold) equipment
Storage package protection should be designed such that mechanical damage to the equipment inside the package
will not cause the refrigerant to leak. Local regulations determine the maximum number of items of equipment that
can be stored together.
6. Information on servicing
1) Checks to the area
Before starting any work on systems containing flammable refrigerants, safety checks are necessary to ensure that
the risk of ignition is minimised. For repairs to the refrigerating system, the following precautions must be taken with
before starting work on the system.
2) Work procedure
Work must follow a controlled procedure to minimise the risk flammable gas or vapour being present while the work
is in progress.
3) General work area
All maintenance staff and others working in the vicinity of the product 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 checking for flammable materials.
4) Checking for the presence of refrigerant
The area must be checked using an appropriate refrigerant detector before and during work, to ensure that the
technician is aware of any potentially flammable atmospheres. Ensure that the leak detection equipment being
used is suitable for use with flammable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
5) Fire extinguishers
If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire ex-
tinguishing equipment must be available. Keep a dry powder or CO2 fire extinguisher adjacent to the charging area.
6) No ignition sources
Anyone carrying out work on a refrigeration system that involves exposing any pipework that contains or has
contained flammable refrigerants must not use any sources of ignition in such a manner that there is potential risk
of fire or explosion. All possible ignition sources, including smoking, should be kept sufficiently far away from the
site of installation, repair work, removal and disposal as flammable refrigerant may be released into the surrounding
atmosphere. Before any work takes place, the area around the equipment must be surveyed to make sure that
there are no flammable hazards or ignition risks. No Smoking signs must 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. Some ventilation must be provided while the work is in progress. The ventilation should safely disperse
any released refrigerant and, ideally expel it to the atmosphere outdoors.
8) Checking the refrigeration equipment
Electrical components that are being replaced must be fit for the purpose and to the correct specification. The
manufacturer's maintenance and service guidelines must be followed at all times. If in doubt consult the manufactu-
rer'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 system 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 refrige-
rant;
– The labelling of the equipment is still visible and legible. Labels and signs that are illegible must be replaced;
– Refrigeration pipes or components are installed in a location where they are unlikely to be exposed to any sub-
stance which may corrode components containing refrigerant, unless the components are made of materials which
are inherently resistant to corrosion or are suitably protected against corrosion.
9) Checking electrical devices
Repair and maintenance of electrical components must include initial safety checks and component inspection
procedures. If there is a fault that could compromise safety, no power supply may be connected to the circuit until
the fault has been corrected. If the fault cannot be corrected immediately but continuing operation necessary, an
adequate temporary solution must be used. This must be reported to the owner of the equipment so that all parties
are advised.
Initial safety checks must include:
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