Bedienungsanleitung MaxxHome AC9M - 20738 (Seite 7 von 24) (Englisch)

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1 GENERAL INSTRUCTIONS

1.1 Checks to the area

Prior 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 con-ducting work on the system.

1.2 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.

1.3 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.

1.4 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 tection

equipment being used is suitable for use with flammable refrigerants, i.e. nonsparking, adequately

sealed or intrinsically safe.

1.5 Presence of fire extinguisher

If any hot work is to be conducted on the refrigeration equipment or any associated parts, propriate

fire extinguishing equipment shall be available to hand. Have a dry powder or CO 2 fire extinguisher

adjacent to the charging area.

1.6 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 igarette

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.

1.7 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.

1.8 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

INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING R290

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MaxxHome AC9M - 20738 Seite 7

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