Bedienungsanleitung Inventum AC907W (Seite 33 von 100) (Deutsch, Englisch, Holländisch, Französisch)

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2) Work procedure

Work 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

All 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

The 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

If 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

No 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 lammable 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

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 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

Where 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:

- 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

obstructed;

- If an indirect refrigerating circuit is being used, the secondary circuit shall be

checked for the presence of refrigerant;

English • 33

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Inventum AC907W Seite 33

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