• Front control panel (see Figure 1)
(1) “+” output terminal: To connect the electrode holder.
(2) “-” output terminal: To connect the work clamp.
(3) Plastic cover: only available on plastic model. (optional)
(4) Power LED: To indicate the power. Power LED on indicates that the power switch of the machine is on.
(5) Overheating LED: To indicate overheating. Overheating LED on indicates that the temperature inside the machine is too
high and the machine is under overheating protection status.
(6) Output current adjustment knob: To adjust the output current.
(10) Digital Display: To show the output current.
• Back control panel (see Figure 2)
(7) Fan
(8) Power switch: Power ON/OFF switch.
(9) Power input: Power input cable.
INSTALLATION DEBUGGING AND OPERATION
Note: Please install the machine strictly according to the following steps. Turn off the power supply switch before any
electric connection operation. The protection class of this machine is IP21S, so avoid using it in rain.
Installation method
(1) A primary power supply cable is available for this welding machine. Connect the power supply cable to the rated input
power.
(2) The primary cable should be tightly connected to the correct socket to avoid oxidization.
(3) Check whether the voltage value varies in acceptable range with a multi-meter.
(4) Insert the cable plug with electrode holder into the “+” socket on the front panel of the welding machine and tighten it
clockwise.
(5) Insert the cable plug with work clamp into the “—” socket on the front panel of the welding machine and tighten it
clockwise.
(6) Ground connection is needed for safety purpose.
The connection as mentioned above is DCEP connection. Operator can choose DCEN connection according to work
piece and electrode application requirement. Generally, DCEP connection is recommended for basic electrode, while
no special requirement for acid electrode.
Operation method
(1) After being installed according to the above method, and the power switch being switched on, the machine is started
with the power LED on and the fan working.
(2) Pay attention to the polarity when connecting. Phenomena such as unstable arc, spatter, and electrode sticking could
happen if improper mode is selected. Exchange the polarity if necessary.
(3) When switching the MMA/TIG switch to MMA mode, normal welding can be carried out under rated output current.
When switching the MMA/TIG switch to TIG position and using lift arc ignition, arc can be successfully started under rated
arc ignition current, and normal welding can be carried out under rated welding current.
(4) Select cable with larger cross-section to reduce the voltage drop if the secondary cables (welding cable and earth cable)
are long.
(5) Preset the welding current according to the type and size of the electrode, clip the electrode and then welding can be
carried out by short circuit arc starting. For welding parameters, please see the next topic.
Welding parameters table (for reference only)
Electrode dia. (mm)
Recommended welding
current (A)
Recommended welding
voltage (V)
1.0
20~60
20.8~22.4
1.6
44~84
21.76~23.36
2.0
60~100
22.4~24.0
2.5
80~120
23.2~24.8
