Manual Telwin Infinity 180 (page 5 of 104) (All languages)

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INSTRUCTION MANUAL

WARNING! BEFORE USING THE WELDING MACHINE READ THE

INSTRUCTION MANUAL CAREFULLY.

1. GENERAL SAFETY CONSIDERATIONS FOR ARC WELDING

The operator should be properly trained to use the welding machine

safely and should be informed about the risks related to arc welding

procedures, the associated protection measures and emergency

procedures.

(Please refer to the applicable standard “EN 60974-9: Arc welding

equipment. Part 9: Installation and Use).

- Avoid direct contact with the welding circuit: the no-load voltage

supplied by the welding machine can be dangerous under certain

circumstances.

- When the welding cables are being connected or checks and

repairs are carried out the welding machine should be switched o

and disconnected from the power supply outlet.

- Switch o the welding machine and disconnect it from the power

supply outlet before replacing consumable torch parts.

- Make the electrical connections and installation according to the

safety rules and legislation in force.

- The welding machine should be connected only and exclusively to

a power source with the neutral lead connected to earth.

- Make sure that the power supply plug is correctly connected to the

earth protection outlet.

- Do not use the welding machine in damp or wet places and do not

weld in the rain.

- Do not use cables with worn insulation or loose connections.

- Do not weld on containers or piping that contains or has contained

ammable liquid or gaseous products.

- Do not operate on materials cleaned with chlorinated solvents or

near such substances.

- Do not weld on containers under pressure.

- Remove all ammable materials (e.g. wood, paper, rags etc.) from

the working area.

- Provide adequate ventilation or facilities for the removal of

welding fumes near the arc; a systematic approach is needed in

evaluating the exposure limits for the welding fumes, which will

depend on their composition, concentration and the length of

exposure itself.

- Keep the gas bottle (if used) away from heat sources, including

direct sunlight.

- Use adequate electrical insulation with regard to the electrode, the

work piece and any (accessible) earthed metal parts in the vicinity.

This is normally achieved by wearing gloves, shoes, head coverings

and clothing designed for this purpose and by using insulating

platforms or mats.

- Always protect your eyes with the relative lters, which must

comply with UNI EN 169 or UNI EN 379, mounted on masks or use

helmets that comply with UNI EN 175.

Use the relative re-resistant clothing (compliant with UNI EN

11611) and welding gloves (compliant with UNI EN 12477) without

exposing the skin to the ultraviolet and infrared rays produced by

the arc; the protection must extend to other people who are near

the arc by way of screens or non-reective sheets.

- Noise: If the daily personal noise exposure (LEPd) is equal to or

higher than 85 dB(A) because of particularly intensive welding

operations, suitable personal protective means must be used (Tab.

1).

- The ow of the welding current generates electromagnetic elds

(EMF) around the welding circuit.

Electromagnetic elds can interfere with certain medical equipment

(e.g. Pace-makers, respiratory equipment, metallic prostheses etc.).

Adequate protective measures must be adopted for persons

with these types of medical apparatus. For example, they must

be forbidden access to the area in which welding machines are in

operation.

This welding machine conforms to technical product standards for

exclusive use in an industrial environment for professional purposes.

It does not assure compliance with the basic limits relative to human

exposure to electromagnetic elds in the domestic environment.

The operator must adopt the following procedures in order to reduce

exposure to electromagnetic elds:

- Fasten the two welding cables as close together as possible.

- Keep head and trunk as far away as possible from the welding

circuit.

- Never wind welding cables around the body.

- Avoid welding with the body within the welding circuit. Keep both

cables on the same side of the body.

- Connect the welding current return cable to the piece being

welded, as close as possible to the welding joint.

- Do not weld while close to, sitting on or leaning against the

welding machine (keep at least 50 cm away from it).

- Do not leave objects in ferromagnetic material in proximity of the

welding circuit.

- Minimum distance d= 20 cm (Fig. I).

- Class A equipment:

This welding machine conforms to technical product standards

for exclusive use in an industrial environment and for professional

purposes. It does not assure compliance with electromagnetic

compatibility in domestic dwellings and in premises directly

connected to a low-voltage power supply system feeding buildings

for domestic use.

EXTRA PRECAUTIONS

- WELDING OPERATIONS:

- In environments with increased risk of electric shock

- In conned spaces

- In the presence of ammable or explosive materials

MUST BE evaluated in advance by an “Expert supervisor” and must

always be carried out in the presence of other people trained to

intervene in emergencies.

All protective technical measures MUST be taken as provided in

7.10; A.8; A.10 of the applicable standard EN 60974-9: Arc welding

equipment. Part 9: Installation and Use”.

- The operator MUST NOT BE ALLOWED to weld in raised positions

unless safety platforms are used.

- VOLTAGE BETWEEN ELECTRODE HOLDERS OR TORCHES: working

with more than one welding machine on a single piece or on

pieces that are connected electrically may generate a dangerous

accumulation of no-load voltage between two dierent electrode

holders or torches, the value of which may reach double the

allowed limit.

An expert coordinator must be designated to measuring the

apparatus to determine if any risks subsist and suitable protection

measures can be adopted, as foreseen by section 7.9 of the

applicable standard “EN 60974-9: Arc welding equipment. Part 9:

Installation and Use”.

RESIDUAL RISKS

- IMPROPER USE: it is hazardous to use the welding machine for any

work other than that for which it was designed (e.g. de-icing mains

water pipes).

- Do not use the handle to hang the welding machine.

2. INTRODUCTION AND GENERAL DESCRIPTION

This welding machine is a power source for arc welding, made specically

for direct current (DC) .

The specic characteristics of this regulation system (INVERTER), i.e. high

speed and precise regulation, mean the welding machine gives excellent

results when welding both with coated electrodes (rutile, acid, basic).

Regulation with the “inverter” system at the input of the power supply

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Telwin Infinity 180 Manual

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