Manual Taurus Alpatec AC 3100 (page 23 of 176) (English, German, Dutch, French, Italian, Polish, Portuguese, Spanish)

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INSTRUCTIONS FOR REPAIR-

ING APPLIANCES CONTAIN-

ING R290

GENERAL INSTRUCTIONS

CHECKS TO THE AREA

- Prior to beginning work on systems containing

ammable refrigerants, safety checks are nec-

essary to ensure that the risk of ignition is mi-

nimised. For repair to the refrigerating system,

the following precautions shall be complied with

prior to con-ducting work on the system.

WORK PROCEDURE

- Work shall be undertaken under a controlled

procedure so as to minimise the risk of a am-

mable gas or vapour being present while the

work is being performed.

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 conned

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 ammable material.

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

ammable atmospheres. Ensure that the leak

tection equipment being used is suitable for use

with ammable refrigerants, i.e. nonsparking,

adequately sealed or intrinsically safe.

PRESENCE OF FIRE EXTINGUISHER

- If any hot work is to be conducted on the

refrigeration equipment or any associated parts,

propriate re extinguishing equipment shall be

available to hand. Have a dry powder or CO 2

re extinguisher adjacent to the charging area.

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

ammable refrigerant shall use any sources

of ignition in such a manner that it may lead to

the risk of re or explosion. All possible ignition

sources, including igarette smoking, should

be kept sufciently far away from the site of

installation, repairing, removing and disposal,

during which ammable refrigerant can possibly

be released to the surrounding space. Prior to

work taking place, the area around the equip-

ment is to be surveyed to make sure that there

are no ammable hazards or ignition risks. “No

Smoking” signs shall be displayed.

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 atmo-

sphere.

CHECKS TO THE REFRIGERATION EQUIPMENT

- Where electrical components are being

changed, they shall be t for the purpose

and to the correct specication. At all times

the manufacturer’s maintenance and service

guidelines shall be followed. If in doubt consult

the manufacturer’s technical department for as-

sistance.The following checks shall be applied

to installations using ammable 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 obstruct-

ed; 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.

CHECKS TO ELECTRICAL DEVICES

- Repair and maintenance to electrical compo-

nents 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 capac-

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Taurus Alpatec AC 3100 Manual

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