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Connection of Output Cables Two sockets are available on this welding machine. For MMA welding the
electrode holder is shown be connected to the positive socket, while the earth lead (work piece) is
connected to the negative socket, this is known as DCEP. However various electrodes require a
di erent polarity for optimum results and careful attention should be paid to the polarity, refer to the
electrode manufacturers information for the correct polarity.
DCEP: Electrode connected to "+"output socket.
DCEN: Electrode connected to"-" output socket.
1. Connect the earth lead to "-", tighten clockwise;
2. Connect the earth clamp to the work piece. Contact with the work piece must be rm contact with
clean, bare metal, with no corrosion, paint or scale at the contact point.
3. Connect the electrode lead to "+", tighten clockwise;
4. Each machine is equipped with a power cable should be based on the input voltage welding power
cable connected to the appropriate position, not to pick the wrong voltage;
5. With the corresponding input power supply terminal or socket good contact and prevent oxidation;
6. With a multi meter measure the input voltage is within the uctuation range;
7. The power ground is well grounded.
3.4. Operation for MMA Welding
(1) According to the above method to install is correct, turn the power switch, so that the power switch
is "ON" position, then the power indicator light, the fan comes on, the device work properly.
(2) Select the MMA function with the LIFT TIG/MMA /MMA VRD selector switch.
(3) Set the welding current relevant to the electrode type and size being used as recommended by the
electrode manufacturer.
(4) Set the Hot Start and Arc Force using the knob.
(5) Place the electrode into the electrode holder and clamp tight.
(6) Strike the electrode against the work piece to create and arc and hold the electrode steady to
maintain the arc.
(7) Commence welding. If necessary, readjust the Weld Current control to obtain the welding
condition re-quired.
(8) After completion of welding the Power Source should be left turned ON for 2 to 3 minutes. This
allows the fan to run and cool the internal components.
(9) Switch the ON/OFF Switch (located on the rear panel) to the OFF position.
NOTE:
Note the polarity of wiring, the general DC welding wire in two ways. Selected according to the
technical requirements of welding the appropriate connection, if you choose incorrectly will result in
arc instability and spatter large adhesion and other phenomena, such cases can be quickly reversed to
joints.
If the work piece distance from the welding machine, the second line(electrode holder and ground) is
longer, so choose the appropriate conductor cross-sectional area should be larger to reduce cable
voltage drop.
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