Jasic EVOLVE 200 Operator's Manual page 30

OPERATION - MMA
Before starting any welding activity ensure that you have suitable eye protection and
protective clothing as, welding rays, spatter, smoke and high temperatures produced in the
process may cause injury to personnel.
Also take the necessary steps to protect any persons within the welding area that may cause injury.
MMA welding
During welding:
During DC welding the heat on the positive and negative electrodes of the welding arc is different.
When welding using DC power supply, there are DCEN (DC electrode negative) and DCEP (DC electrode
positive) connections.
The DCEN connection refers to the welding electrode connected to the negative electrode of the power
supply and the work piece connected to the positive electrode of the power supply.
In this mode the work piece receives more heat, resulting in high temperature, deep molten pool, easy
to weld through, suitable for welding thick parts.
The DCEP connection refers to the welding electrode connected to the positive power supply with the
work piece connected to the negative power supply. In this mode the work piece receives less heat,
resulting in low temperature, shallow pool, and difficulty in welding through. This is suitable for welding
thin parts.
The Evolve 200 units have preset anti-stick function by default. In the welding process, if a short circuit
occurs on the welding output for 2 seconds, the machine will automatically enter anti-stick mode.
This means the welding current will automatically drop to 20A to allow the short circuit to be cleared.
When the short circuit is cleared the welding current will automatically return to the set current.
Turn off the power supply after welding
On completion of any welding operating, the machine should be powered down.
The power switch is located on the rear panel of the machine and should
be set to the "off" position.
It maybe noted that for a short period of time that the machines
fan continues to run, this is quite normal and after a short time
delay, the control panel lights indicator will turn off and the fan
will stop indicating that the welder has now fully powered down.
It's also good practice to turn off the power at the machine socket
outlet and fully disconnect the machine from the supply socket.
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