operation instructions page 9
11 Master switch
Position „0“: welding unit is switched off.
Stellung „I“: welding unit is switched on, control box lamp is lit. Fan will switch on upon temperature
rise.
13 Weld-grade switch, coarse adjustment, 2 grades
(only by MIG 326)
14 Weld grade switch, fine adjustment, 12 grades
A combination of coarse and fine adjustment provides 24 different voltage grades. Each coarse grade is
subdivided into 12 fine grades. There is no crossover of coarse grades.
15 Temperature fault indicator
is lit in case of thermic overload occuring in unit. No starting of welding process via torch trigger possible.
With the fan running, the machine will be operable again after approx. 5 min.
16 F1 fuse
The fuse, 2 A slow, for primary control transformer
17 Workpiece connecting socket, half choke
18 Workpiece connecting socket, full choke.
The function of the choke is to limit the short-circuit current for softer welding with a minimum of welding
spatter occurring.
However, the choke also reduces arc-length self-regulation which, in case of low current load of wire
(short arc), may cause arc instability. In this case it is recommended to use half choke.
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