Telwin MODULAR 20/TI Manuel D'instructions page 5

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 PRINCIPAL COMPONENTS AND ADJUSTMENTS ...............................
4.2 CONTROL PANEL (only for "DIGITAL" models)........................................
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.
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, *
- 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.
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- The strong magnetic fields generated by resistance welding processes (very
high currents) may damage or interfere with:
- CARDIAC STIMULATORS (PACE MAKERS)
- ELECTRONICALLY CONTROLLED IMPLANTED DEVICES
INDEX
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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
6
6. (SPOT) WELDING ......................................................
6.1 PRELIMINARY OPERATIONS ..................................................................
6
6.2 ADJUSTING THE (spot-welding) PARAMETERS ....................................
6
6.2.1. Digital Models .................................................................................
6
6.2.2. Model TI ..........................................................................................
6.3 PROCEDURE............................................................................................
6
6
7. MAINTENANCE.........................................................
6
7.1 ROUTINE MAINTENANCE ......................................................................
7.2 EXTRAORDINARY MAINTENANCE........................................................
- METAL PROSTHESES
- Data transmission or local telephone networks
- Instrumentation
- Clocks and watches
- Magnetised cards
WEARERS OF VITAL ELECTRICAL OR ELECTRONIC DEVICES AND PEOPLE
WITH METAL PROSTHESES SHOULD NOT BE ALLOWED TO USE THE SPOT-
WELDER.
SUCH PERSONS SHOULD TAKE MEDICAL ADVICE BEFORE STOPPING IN
THE VICINITY OF SPOT-WELDERS AND/OR WELDING CABLES.
- This spot-welder complies with all requirements of the technical standard for
the product, which to be used only and exclusively in industrial environments
and for professional purposes.
Electromagnetic compatibility with a domestic environment cannot be
guaranteed.
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.
- IMPROPER USE
It is dangerous to use the spot-welder for any other purpose than that for
which it is designed (spot resistance welding).
PROTECTIONS
The safeguards and moveable parts of the spot-welder casing should all be in
position before connection to the power supply.
WARNING: All manual operations on moveable accessible parts of the spot
welder, for example:
- Electrode replacement or maintenance
- Adjusting the position of the arms or electrodes
SHOULD BE CARRIED OUT WITH THE SPOT-WELDER SWITCHED OFF AND
DISCONNECTED FROM THE POWER SUPPLY.
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