Connection Of The Welding Torch; Connection Of The Welding Wire And Adjustment Of Gas Flow - navod 255 Bedienungsanweisung

Picture 1B Picture 2B
DIGITAL CONTROL SYNERGIC
Picture D
Position 11 LED signalling switching synergic function on.
Position 12 Display of welding current.
Position 13 LED signalling approximate power values of welding material on
display. When diode is off display shows value of welding cur‐
rent.
Position 14 LED shows which outlet of inductor should be used.
Position 15 LED shows which outlet of inductor should be used.
Position 16 Display showing welding pressure and values with LED diode
SETTING light up. They are values of speed of wire feeder, pre‐
gas etc.
Position 17 LED SETTING which is on only when parameters are shown:
speed of wire feeder, start of wire, pre‐gas and post‐gas, spot
time and pulse time, burning out of wire.
Position 18 LED illustrating speed of shifting of welding wire.
Position 19 LED illustrating spot time.
Position 20 LED illustrating burnt out time
Position 21 LED illustrating post‐gas time
Position 22 LED illustrating pulse time.
Position 23 Button wire feeder.
Connection of welding torch
With the machine disconnected from the supply, connect welding torch into
EURO connector and tighten well the cap nut. Welding torch and earth cable
should be as short as possible, close to each other and positioned at the floor
level or close to it.
WELDING PART
The part to be welded must always be connected to earth in order to reduce
electromagnetic emission. Much attention must be afforded so that the earth
connection of the part to be welded does not increase the risk of accident to
the user or the risk of damage to other electric equipment.
Connection of the welding wire and adjustment of
gas flow
Before connecting the welding wire, it is necessary to check the wire feed
rolls if they correspond to the profile of roll groove. When using the steel
welding wire, it is necessary to use the roll with V‐shaped roll groove. A list of
rolls can be found in chapter „Spare parts of wire feeders and List of rolls."
CHANGING OF WIRE FEED ROLL
Rolls are two‐grooved. These grooves are designed for two different diameter
of the wire (e.g. 0.8 and 1.0 mm).
•
lift the holding‐down mechanism
•
screw out the locking plastic screw and take out the roll
•
if there is a suitable groove on the roll, turn the roll and put it back on
the shaft and secure it with a plastic locking screw
CONNECTION OF WELDING WIRE
•
take off the side cover of wire container
•
put on the wire spool onto the holder into the container
•
cut off the end of the wire fastened to the edge of the roller and lead it into
the loading bowden (pic. 2A pos. 14, 2B pos. 10), then through the roll of
feed into the loading tube (pic. 2A pos. 12, 2B pos. 11) 10 cm at least
•
check if the wire leads through the right feed groove
•
tilt the holding‐down roll down and return the holding‐down mechanism
into the vertical level
•
adjust the nut pressure of thrust to secure the
wire feed without problems and deformation by too much thrust (pict.
2A pos. 15, pict. 2B pos. 9 and pict. 3)
•
dismount the gas tip of welding torch
•
unscrew the flow drawing tip
•
connect the socket plug into the network
•
turn on the main switch (pict. 1A pos. 1, pict. 1B pos. 2) into pos. 1
•
press the button of the torch. The welding fire is lead into the torch. The
speed of the leadingin must be adjusted with the potentiometer with the
speed of the wire feed (pict.1, pos. 3)
•
after the run of wire from the torch, screw the flow drawing tie and gas
tube
•
before welding use separating spray in the space of gas tube and flow
drawing tie; in that way you prevent adherence of metal spatter and
prolong the life of gas tube
WARNING! During wire threading don't aim the torch against eyes!
CHANGES WHEN USEING ALUMINIUM WIRE
For welding with aluminium wire it is necessary to use a special roll with „U"
profile (chapter "Spare parts of wire feed"). In order to avoid problems with
„ruffle" of wire, it is necessary to use wire in diameter min. 1.0 mm from
alloys AIMg3 or AIMg5. Wires from alloys A199.5 or AlSi5 are too soft and can
easily cause problems with feed. For welding of aluminium it is necessary to
equip the torch with teflone bovden and special flow drawing tie. As shielding
atmosphere it is necessary to use pure Argon.
ADJUSTMENT OF GAS FLOW
Electric arc and welding pool must be perfectly protected by gas. Too little
amount of gas cannot create necessary shielding atmosphere and on the
contrary, too big amount of gas entrains air into electric arc, which makes the
weld imperfectly protected.
Proceed as follows:
•
fix the gas tube with the filter on the inlet of the gas valve on the back
side of the machine (pic. 1A pos. 17, 1B pos. 6)
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Picture 3