Castolin SynARC 180 Mode D'emploi page 39

CASTOLIN SynARC 180 & SynARC 200
application requirement. Generally, DCRP connection is recommended for basic electrode
(electrode is connected to positive pole), while there is no special requirement for acid electrode.
10.2 Operation for MMA welding
4) 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.
5) Pay attention to the polarity when connecting. There are two connection modes for DC welder in
general, one of which is straight polarity in which electrode holder is connected to negative pole and
workpiece is connected to positive pole, the other is reverse polarity to which is opposite. Phenomena
such as unstable arc, spatter, and electrode sticking could happen if improper mode is selected.
Exchange the quick plug to change the polarity if necessary.
6) Select cable with larger cross-section to reduce the voltage drop if the secondary cables (welding
cable and earth cable) are long and distance between workpiece and welder is far.
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 ignition. For welding parameters, please refer to the below
table.
10.3 Welding parameters table（for reference only）
Electrode
Diameter(mm)
1.6
2.0
2.5
3.2
4.0
5.0
Note: This table is suitable for mild steel welding. For other materials, consult related materials
and welding process for reference.
10.4 Installation and operation for TIG LIFT welding
10.4.1 Installation
3) As it is shown in the figure, TIG torch is connected to negative pole on the front panel,
Recommended Welding
Current(A)
30~70
40~90
50~100
70~150
140~180
160~200
Recommended welding
voltage(V)
21.2~22.8
21.6~23.6
22~24
22.8~26
25.6~27.2
26.4~28