Hyundai
07
MMA-
100/120/140/160/180/200
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 in 6.1(4) and 6.1(5) 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) Select cable with larger cross-section to reduce the voltage drop if the secondary cables (welding cable
and earth cable) are long.
4) 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 refer to the table in
next page.
6. Installation Debugging and Operation
