djm direct DJMMIG195 Podręcznik - Strona 6

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electrode circuit unless the welding power source is off. b)

Equipment without output on/off control (no contactor) Welding

power sources used with shielded metal arc welding and similar

processes may not be equipped with welding power output on/off

control devices. With such equipment the electrode is electrically

LIVE when the power switch is turned ON. Never touch the electrode

unless the welding power source is off.

g) Safety devices

Safety devices such as interlocks and circuit breakers should not be

disconnected or shunted out. Before installation, inspection, or

service of equipment, shut OFF all power and remove line fuses (or

lock or red-tag switches) to prevent accidental turning ON of power.

Do not open power circuit or change polarity while welding. If, in an

emergency, it must be disconnected, guard against shock burns, or

flash from switch arcing. Always shut OFF and disconnect all power to

equipment. Power disconnect switch must be available near the

welding power source.

6.Preparation Of The Working Area

The working area must be sufficiently spacious, not humid, and

well-ventilated as to avoid any fumes which develop from the

welding process and from incidental material adhering to the pieces

to be welded (oils, paints, tars...) which may cause annoyance to the

operator. Avoid welding by contact with humid parts nearby

combustible liquids. Least of all, do not weld upon tanks which may

contain flammable residuals.

ADDITIONAL SAFETY PRECAUTIONS FOR MIG WELDING

✔ALWAYS ensure that there is full free air circulating

around the outer casing of the machine, and that the

louvres are unobstructed.

✔Welding arc can seriously damage your eyes. Both

operator and spectators must ALWAYS use a proper

welding face shield or helmet, with suitable filter lenses.

Proper gloves and working clothes should be worn at all

times.

✔ALWAYS inspect the hose before use to ensure it is in

good condition.

✔ALWAYS keep the free length of hose outside the

work area.

✔ALWAYS remove all flammable materials from the

welding area.

✔ALWAYS Keep fire extinguisher handy....'Dry Powder,

C02 or BCF, NOT Water

✗ NEVER remove any of the panels unless the machine

is disconnected from the supply, AND never use the

machine with any of the panels removed.

✗ NEVER attempt any electrical or mechanical repair

unless your are a qualified technician. If you have a

problem with the machine contact your local dealer.

✗ NEVER use or store in a wet/damp environment. DO

NOT EXPOSE TO RAIN.

✗ NEVER continue to weld, if, at any time, you feel

even the smallest electric shock.

Stop welding IMMEDIATELY, and DO NOT attempt to use

the machine until the fault is diagnosed and corrected.

✗ NEVER point the MIG torch at any person or animal.

✗ NEVER touch the MIG torch nozzle until the welder is

switched OFF and the nozzle has been allowed to cool

off.

✗ NEVER connect, disconnect, or attempt to service

the MIG torch,

until the machine is switched OFF and disconnected

from the mains

supply.

✗ NEVER allow the cables to become wrapped around

the operator or any person in the vicinity.

DANGER – ELECTRIC SHOCK CAN BE FATAL.

A Person qualified in first aid should always be

present in the working area. If person is unconscious

and electric shock is suspected, do not touch the

person if he or she is in contact with the welder or

cables. Disconnect the welder from the power

source and then use first aid . Dry wood, or other

insulating material can be used to move cables, if

necessary, away from the person.

7.Safety Equipment

A comprehensive range of safety equipment for use

when welding is available from your local dealer.

NO-GAS WELDING – PRINCIPLES OF OPERATION

MIG (Metal Inert Gas) welding is a process in which a

power wire electrode is fed continuously into the weld

pool at a controlled, constant rate.

The wire is connected to the negative side of a rectified

voltage supply. The workpiece is connected to the

positive side of the supply.

When the wire is fed, it comes into contact with the

workpiece and an arc is struck. The arc melts the wire

and the material, fusing it together.

The wire, which is fed by the wire feed motor is fed into

the weld pool, burning itself off at a rate dependent

upon the selected wire feed speed.