Qlima D 720 Cube Gebrauchsanweisung Seite 71

4. STORAGE OF EQUIPMENT/APPLIANCES
T he storage of equipment should be in accordance with the manufacturer's
instructions.
5. STORAGE OF PACKED (UNSOLD) EQUIPMENT
S torage package protection should be constructed such that mechanical damage
to the equipment inside the package will not cause a leak of the refrigerant
charge. The maximum number of pieces of equipment permitted to be stored
together will be determined by local regulations.
6. INFORMATION ON SERVICING
1) Checks to the area
P rior to beginning work on systems containing flammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimised. For repair
to the refrigerating system, the following precautions shall be complied with
prior to conducting work on the system.
2) Work procedure
W ork shall be undertaken under a controlled procedure so as to minimise
the risk of a flammable gas or vapour being present while the work is being
performed.
3) General work area
A ll maintenance staff and others working in the local area shall be instructed
on the nature of work being carried out. Work in confined spaces shall be
avoided. The area around the workspace shall be sectioned off. Ensure that
the conditions within the area have been made safe by control of flammable
material.
4) Checking for presence of refrigerant
T he area shall 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, i.e. non-sparking, adequately sealed or
intrinsically safe.
5) Presence of fire extinguisher
I f 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 or CO2 fire extinguisher adjacent to the charging
area.
6) No ignition sources
N o 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
E nsure 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
W here 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:
T he charge size is in accordance with the room size within which the refrigerant
containing parts are installed;
T he ventilation machinery and outlets are operating adequately and are not
obstructed;
I f 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
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