Jasic MAG SERIES Operator's Manual - Operation
Operation
Before starting any welding activity ensure that you have
suitable eye protection and protective clothing. Also take
the necessary steps to protect any persons within the
area.
MMA
After connecting the welding leads as detailed you will need
to switch the power switch on the back panel to “ON”
Select MMA by switching to the MMA welding mode. There
is voltage output at both output terminals.
Set the amperage on the machine suitable for the electrode
being used. Please see below a guide to amperages
required. Ensure you check that you have the electrode
polarity correct.
MIG/MAG
Connect the MIG torch leads as detailed above. Ensure that
a suitable inert gas supply is connected.
Switch the power switch on the back panel to “ON”, the
machine is started with the power LED on and the fan
working.
Switch the MMA/MIG switch to MIG mode.
Open the gas valve of the cylinder, and adjust the gas
regulator to obtain the desired flow rate.
Adjust the “voltage control knob in MIG” and “wire feed
speed control knob in MIG” on the front panel of the
machine to get the correct welding voltage and welding
current.
Operate the torch trigger, and welding can be carried out.
Where required adjust the burn-back time potentiometer
(above the feed unit inside the machine) to get the proper
electrode stick-out.
One second after the arc stops, the gas supply will be cut
o
ff
.
Gas less MIG
The operation method is the same to MIG operation except
that there are no gas options.
TIG Welding
1) After being installed correctly as shown in the installation
section, switch the power switch on the back panel to
“ON”, the machine is started and the fan operates. The
display window displays the rated capacity and software
version firstly, and then displays the relevant parameters
after several seconds.
Using the Euro TIG torch
2) Switch the welding mode selection switch to “TIG”.
3) Select the desired operating mode using the 2T/4T switch
key.
2T: After pressing down the torch trigger, gas flows for the
pre-flow time, and then welding begins. Initially, the arc is
ignited by touch and lift at low current. The current rises to
the initial current, and then it increases gradually (according
to the upslope time) to the preset current. After releasing the
torch trigger, the current drops gradually (according to the
downslope time) to “0”, and welding ends.
4T: After pressing down the torch trigger, gas flows for the
pre-flow time, and then welding begins. Initially, the arc is
ignited by touch and lift at low current. The current rises to
the initial current, and then it increases gradually (according
to the upslope time) to the preset current. The torch trigger
can be released during welding. When pressing down the
torch trigger again, the current drops gradually (according to
the downslope time) to the pilot arc current. After the torch
trigger is released, gas keeps flowing for the post-flow time,
and welding ends.
4) Select the correct welding current using the current
control knob according to the thickness of the workpiece,
and the current display window displays this preset value.
Set the downslope time through the downslope time
control knob.
Using valve type torch with no trigger
Arc ignition mode:
This mode adopts contact arc ignition in TIG. The operator
should bring the tungsten electrode into contact with the
workpiece.When there is current, lift the electrode a little
immediately to enter into normal welding. Using this torch
there is no 2T or 4T operation and no downslope
11
Electrode Diameter (mm)
Recommended Welding Current (A)
1.0
20~60
1.6
44~84
2.0
60~100
2.5
80~120
3.2
108~148
4.0
140~180
5.0
180~220
6.0
220~260