Bedienungsanleitung Sogo SS-1287 (Seite 26 von 88) (Deutsch, Englisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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INFORMATION ON SERVICING

1) Checks to the area

Prior to beginning work on systems containing

flammable refrigerants, safety checks ar

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

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 confine

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 flammabl

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. Ensur

that the leak detection equipment being used is

suitable for use with flammabl

refrigerants, i.e. non-sparking, adequately sealed

or intrinsically safe.

5) Presence of re 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 source

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 t

site of installation, repairing, removing and

disposal, during which flammable refrigeran

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 flammabl

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 t

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;

– Marking to the equipment continues to be visible

and legible. Markings and signs that

are illegible shall be corrected;

– Refrigeration pipe or components are installed in

a position where they are unlikely to

be exposed to any substance which may corrode

refrigerant containing components,

unless the components are constructed of

materials which are inherently resistant to

being corroded or are suitably protected against

being so corroded.

9) Checks to electrical devices

Repair and maintenance to electrical components

shall include initial safety checks and

component inspection procedures. If a fault exists

that could compromise safety, then no

electrical supply shall be connected to the circuit

until it is satisfactorily dealt with. If the

fault cannot be corrected immediately but it is

necessary to continue operation, an

adequate temporary solution shall be used. This

shall be reported to the owner of the

equipment so all parties are advised.

Initial safety checks shall include:

• That capacitors are discharged: this shall be

done in a safe manner to avoid possibility

of sparking;

• That there no live electrical components and

wiring are exposed while charging,

recovering or purging the system;

• That there is continuity of earth bonding.

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