Risk Of Burns - Telwin Digital Car Puller 5000 Manual De Instrucciones

ENGLISH
1. GENERAL SAFETY RULES FOR
RESISTANCE WELDING ...........................................
2. INTRODUCTION AND GENERAL DESCRIPTION ....
2.1 INTRODUCTION......................................................................................
2.2 STANDARD ACCESSORIES ...................................................................
2.3 OPTIONAL ACCESSORIES .....................................................................
3. TECHNICAL DATA.....................................................
3.1 RATING PLATE ........................................................................................
3.2 OTHER TECHNICAL DATA .......................................................................
4. DESCRIPTION OF THE SPOT-WELDER ...................
4.1 CONTROL PANEL (FIG. B1) ....................................................................
4.2 CONTROL PANEL (FIG. B2) ....................................................................
APPLIANCES FOR RESISTANCE WELDING FOR INDUSTRIAL AND
PROFESSIONAL USE
Note: In the following text the term "spot-welder" will be used.
1. GENERAL SAFETY RULES FOR RESISTANCE
WELDING
The operator should be properly trained to use the spot-welder safely and should
be informed of the risks connected with resistance welding procedures, of
related protection measures and of emergency procedures.
- Electrical installation should be carried out following accident-prevention
legislation and standards.
- The spot-welder should be connected only and exclusively to a power supply
with the neutral conductor connected to earth.
- Make sure the power supply outlet is correctly connected to the earth
protection.
- Do not use cables with worn or damaged insulation or with loosened
connections.
- Do not use the spot-welder in damp or wet environments or in the rain.
- When connecting the welding cables or carrying out any routine maintenance
operation on the arms and/or electrodes the spot-welder should be switched
off and disconnected from the power supply.
The same procedure should be followed when making connections to the
water supply or to a closed circuit cooling unit (water-cooled spot-welders)
and whenever repairs are made (extraordinary maintenance).
- Do not weld on containers, receptacles or piping that contain or have
contained flammable liquid or gas products.
- Do not operate on materials cleaned with cholorinated solvents or near such
substances.
- Do not weld on pressurised containers.
- Remove all flammable substances from the work area (e.g. wood, paper, rags
etc.).
- Make sure there is sufficient ventilation or provide means for removing
welding fumes near the electrodes; a systematic approach is necessary to
evaluate limits of exposure to the welding fumes depending on their
composition and concentration and on the length of exposure.
- Always protect the eyes with suitable eye protectors.
- Wear protective gloves and clothing suitable for resistance welding work.
- Noise levels: If the personal daily exposure level (LEPd) is found to be greater
than 85db(A) due to particularly intensive welding operations, wearing
personal protection devices is compulsory.
- The flowing of spot welding currents generates electromagnetic fields (EMF)
around the spot welding circuit.
Electromagnetic fields 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
INDEX
page
5. INSTALLATION .........................................................
5.1 PRELIMINARY OPERATIONS ................................................................
5
5.2 LIFTING THE SPOT-WELDER ................................................................
5.3 POSITION ...............................................................................................
5.4 CONNECTION TO THE MAIN POWER SUPPLY ...................................
6
5.4.1 Warnings ........................................................................................
6
5.4.2 Plug and socket..............................................................................
6
5.5 CONNECTING THE MANUAL CLAMP AND STUDDER GUN
6
WITH EARTH CABLE ............................................................................
6
6. (SPOT) WELDING ......................................................
6
6.1 PRELIMINARY OPERATIONS ..................................................................
6
6.2 ADJUSTING THE (spot-welding) PARAMETERS ....................................
6.3 PROCEDURE............................................................................................
6
6
7. MAINTENANCE..........................................................
7
7.1 ROUTINE MAINTENANCE ......................................................................
7.2 EXTRAORDINARY MAINTENANCE........................................................
which spot welding machines are in operation.
This spot welder 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 fields in the
domestic environment.
The operator must adopt the following procedures in order to reduce exposure to
electromagnetic fields:
- Fasten the two spot welding cables (if present) as close together as possible.
- Keep head and trunk as far away as possible from the spot welding circuit.
- Never wind spot welding cables around the body.
- Avoid spot welding with the body within the spot welding circuit. Keep both
cables on the same side of the body.
- Connect the spot welding current return cable to the piece being spot welded,
as close as possible to the welding joint.
- Do not spot weld while close to, sitting on or leaning against the spot welder
(keep at least 50 cm away from it).
- Do not leave objects in ferromagnetic material in proximity of the spot welding
circuit.
- Minimum distance:
- d= 3cm, f= 50cm (Fig. F);
- d= 3cm, f= 50cm (Fig. G);
- d= 30cm (Fig. H);
- d= 20cm (Fig. I) Studder.
- Class A equipment:
This spot welder 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.
RESIDUAL RISKS
- RISK OF UPPER LIMBS BEING CRUSHED
Both the operating method for the spot-welder and the variability in shape and
size of the piece being welded make it impossible to provide integrated
protection against the danger of the upper limbs being crushed: fingers,
hands, forearm.
The risk should be reduced by appropriate preventive measures:
- The operator should either be expert or trained in resistance welding
procedures using this type of appliance.
- There should be risk evaluation for every type of job to be done; equipment
and masking should be provided to support and guide the work-piece
(unless a portable spot-welder is used).
- Whenever the shape of the piece allows it, adjust the electrode distance so
that the stroke does not exceed 6 mm.
- Do not allow more than one person to work on the same spot-welder at the
same time.
- Unauthorised persons should not be allowed in the working area.
- Do not leave the spot-welder unattended: in such a case it should be
disconnected from the power supply.
-

RISK OF BURNS

Some parts of the spot-welder (electrodes arms and nearby areas) may reach
temperatures of over 65°C: suitable protective clothing must be worn.
- RISK OF TIPPING AND FALLING
- Place the spot-welder on a level horizontal surface that is able to support its
weight; confine the spot-welder to the support surface (when required in the
"INSTALLATION" section of this manual). Otherwise with inclined or uneven
floors or moveable supporting surfaces there is the danger of tipping.
- Never lift the spot-welder unless explicitly required by the "INSTALLATION"
section of this handbook.
- 5 -
page
7
7
7
7
7
7
7
7
7
7
7
7
8
8
8