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Pre‐gas
Welding process
1
Start of the welding process
1. Push and hold the switch of torch
2. Release the switch of torch
FOUR‐WORK CYCLE
It is used to weld long, when the welder does not have to hold the switch of
the torch all the time. The function is started pressing the switch from the
position 0 into any of 1‐10. You will start the welding process in such a way.
After releasing of the switch, the welding process still goes on. Only after
a further pressing and releasing of the switch of the torch, the welding pro‐
cess is interrupted.
Pre‐gas
Welding process
Start of the welding process
1‐2
1‐2. Push and hold the switch of torch
3‐4. Release the switch of torch
SPOT WELDING
It is used for welding by individual short spots, whose length can be conti‐
nuously adjusted by turning of the left potentiometer (pic. 1, pos. 6) for re‐
quired value on the scale (toward the right direction, the interval is prolon‐
ged). By pressing the switch on the torch, the time circuit is started, which
starts the welding process and after the set time it turns off. After further
pressing the button, the whole process is repeated. For turning off the spot
welding it is necessary to switch off the potentiometer into position 0. The
right potentiometer is off during the whole time of spot welding.
Welding in adjusted time
Pre‐gas
Start of the welding process
1
1. Push and hold the switch of torch
2. Release the switch of torch
PULSE WELDING
It is used for welding by short spots. Length of these spots and pauses can be
continuously adjusted. It is set up turning the left potentiometer, which is for
the length of spot (pic. 1, pos. 6) and the right potentiometer, which is for the
length of pauses (pic. 1, pos. 7) from the position 0 into required value on the
scale (towards the right direction, the pause is prolonged). By pressing the
switch of the torch, time circuit is started, which starts the welding process
and after certain time turns it off. After set pause, the whole activity is re‐
peated. To interrupt the function, it is necessary to release the switch on the
welding torch. To turn off the function, it is necessary to switch both poten‐
tiometers into position 0.
welding
Pre‐gas
End of the welding process
1
Start of the welding process
1. Push and hold the switch of torch
2. Release the switch of torch
Prior to welding
IMPORTANT: before switching on the welder, check once again that the vol‐
tage and frequency of the power network correspond to the rating plate.
1.
Adjust the welding voltage using the switch (pos. 2, 3 pict. 1) and welding
current/wire speed using the panel potentiometer.
2.
Adjust the PROCESS switch (pos. 6 and 7 pict. 1) to the most suitable
position according to the type of welding to be carried out.
3.
Turn on the welder by selecting pos.
Maintenance
WARNING: Before carrying out any inspection of the inside of the generator,
disconnect the system from the supply.
SPARE PARTS
Original spare parts have been specially designed for our equipment. The use
of non‐original spare parts may cause variations in performance or reduce the
Post‐gas
End of the welding process
2
End of the welding process
Post‐gas
End of the welding process
2
Post‐gas
pause
2
1
on the supply switch
(pos
foreseen level of safety. We decline all responsibility for the use of non‐origi‐
nal spare parts.
THE GENERATOR
As these systems are completely static, proceed as follows:
•
Periodic removal of accumulated dirt and dust from the inside of the
generator, using compressed air. Do not aim the air jet directly onto the
electrical components, in order to avoid damageing them.
•
Make periodical inspections in order to individuate worn cables or loose
connections that are the cause of overheating.
•
Periodical revision inspection of the machines has to be done once in
a half of year by an authorised staff in accord with CSN 331500, 1990 and
CSN 056030, 1993.
WIRE FEED
Great attention has to be paid to the feeding mechanism, especially to the
sheaves and the space around them. During the wire feeding, copper coating
peels off and small fillings fall off, which are either brought into the spring or
Post‐gas
pollute the inner space of feeding mechanism. Regularly remove and store up
dirt and dust from the inner part of wire store and feeding mechanism.
Great attention has to be paid to the feeding mechanism, especially to the
sheaves and the space around them. During the wire feeding, copper coating
peels off and small fillings fall off, which are either brought into the spring or
3‐4
pollute the inner space of feeding mechanism. Regularly remove and store up
dirt and dust from the inner part of wire store and feeding mechanism.
WELDING TORCH
The welding torch has to be regularly maintained and worn‐out parts have to
be exchanged on time. The most stressed parts are the flow drawing die, the
gas tube, the pipe of the torch, the spring for leading the wire, the coaxial
cable and the button of the torch. The flow drawing die lead welding current
into wire and at the same time wire is directed to the point of welding. It has
service life from 3 to 20 welding hours (according to the producer), which de‐
pends on the quality of material of drawing die (Cu or CuCr), the quality and
surface finish of wire, welding parameters and service. The exchange of draw‐
ing die is recommended after the worning‐out of drawing die hole to 1.5 mul‐
tiple of wire diameter. After each installing and exchange it is recommended
to spray the drawing die and its thread with separating spray.
The gas tube leads gas which protects arc and molten pool. Spatter of metal
clogs the tube and it is necessary to clean it regularly to secure good and uni‐
form flow of gas and to avoid short‐circuit between the drawing die and the
tube. A short‐circuit can make damage to the rectifier! The speed of cloging
the tube depends particularly on good adjustment of welding process.
Spatter of metal is easily removed after spraying the gas tube with separating
spray. After these precautions, spatter falls out partially, though it is necessa‐
ry to remove it every 10 ‐ 20 min. from the space between the tube and draw‐
ing die with non‐metallic rod by mild pounding. According to the current and
rate of work you need to take off the gas tube twice of 5 times during the
shift and to clear it thoroughly, including channels of the spacer, which serve
as gas inlet. You are not allowed to pound with the gas tube since its insulat‐
ing compound can be damaged. The spacer is also exposed to the effects of
the spatter and heat stress. Its service life is 30 ‐ 120 welding hours (according
to the producer).
Time intervals of changing the springs depend on the wire purity and mainte‐
nance of the feeding mechanism and adjustment of the trust of feed sheaves.
Once a week it has to be cleaned with trichloroethylene and blown through
with compressive air. In the case of high working‐out or its clogging the spring
has to be exchanged.
The pointing out of difficulties and their elimination
The supply line is attributed with the cause of the most common difficulties.
In the case of breakdown, proceed as follows:
1.
check the value of the supply voltage
2.
check that the power cable is perfectly connected to the plug and the
supply switch
3.
check that the power fuses are not burned out or loose
4.
check whether the following are defective:
• the switch that supplies the machine
• the plug socket in the wall
• the generator switch
NOTE: Given the required technical skills necessary for the repair of the gene‐
rator, in case of breakdown we advise you to contact skilled personnel or our
technical service department.
1,
pict
1)
.
.
.
Ordering spare parts
For easy ordering of spare parts include the following:
1.
the order number of the part
2.
the name of the part
3.
the type of the machine or welding torch
4.
supply voltage and frequency from the rating plate
5.
serial number of the machine
EXAMPLE: 2 pcs., code 30451, welding machine 354, 3x400V 50/60Hz, S/N
‐ 30 ‐
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