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3. Installation instruction
connection and negative connection. Positive connection: holder connects with "-" terminal, while
work piece with the "+" terminal. Negative connection: work piece with the"-" terminal, holder with
the "+" terminal. Choose suitable way according to the working situation. If unsuitable choice is
made, it will cause unstable arc, more spatters and conglutination. If such problems occur, please
change the polarity of the fastening plug.
3.6. According to input voltage grade, connect power cable with power supply box of relevant
voltage grade. Make sure no mistake is made and make sure the voltage difference is among
permission range. After the above job, installation is finished and welding is available.
!!! If distance of work piece and machine is too far (10-50m), and the cables (torch cable and earth
cable) are too long, please choose cable of bigger section to minimize the reduction of the voltage.
4. Operation
4.1. Turn on the power switch, the screen will show set current value and ventilator is beginning
to run.
4.2. Adjust knobs of welding current and arc-striking push, make welding function complies with
demands.
4.3. Generally, welding current is adequate to welding electrode according with as following:
Specification
Current
4.4. Knob of arc-striking drive is use to adjust welding function, specially in low current arrange,
that is cooperated with knob of welding current adjustment, they may adjust current of arc striking
and be out of control of knob of welding current adjustment .So machine can grain powerful energy
and push current can achieve effect that may .
4.5. If the VRD equipment is installed in the machine. When the switch of back panel is put "ON"
position, the VRD indictor is lit, and when the switch is put "OFF" position, the VRD indicator is off,
then the no-load voltage is 67V.switch of VRD is put inside the machine, with the "on" condition. the
no-load voltage changes to be less than 15V, which is safe for people.
The
compensation equipment. When the power voltage
fluctuation is between±15% of rated voltage, it still can
work normally.
to prevent voltage from going down, bigger section
cable is suggested. If the cable is too long, it may affect
the performance of the power system. So cables of
configured length are suggested.
or covered to avoid malfunction of cooling system.
6mm2 to the housing, the way is connecting screw in the
back of the power source to ground device .
according to the sketch. Make sure the cable, holder and
fastening plug have been connected with the ground.
Put the fastening plug into the fastening socket at the "-"
terminal and fasten it clockwise.
socket of "+" terminal at the front panel, fasten it
clockwise, and the earth clamp at the other terminal
clamps the work piece.
DC welding machine has two connecting ways: positive
Ø2.5
70-100A
110-140A
machine
is
equipped
When the machine is used with long cables, in order
3.1. Make sure the intake of the machine is not blocked
3.2. Ground the cables with section area no less than
3.3. Correctly connect the arc torch or holder
3.4. Put the fastening plug of the cable to fastening
3.5. Please pay attention to the connecting terminal,
Ø3.2
Ø4.0
170-220A
13
with
power
voltage
Ø5.0
230-280A
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