"Characteristic" parameter (for the rod-
electrode welding process with CEL
electrodes)
The "characteristic" parameter is for setting the slope of the
falling welding-current characteristic. The welding properties
achieved when cellulose electrodes are welded are determined
to a large extent by the slope of the characteristic.
If there are problems with cellulose electrodes tending to
"stick", set the arc-force parameter to a higher value (shallow
characteristic).
Stage 0 ..... Soft, low-spatter arc (vertical characteristic = con-
stant current)
Stage 3 ..... Harder, more stable arc (shallow characteristic)
4 A/V (factory setting)
2,7 A/V
1,3 A/V
0 A/V (no LED = constant current)
U (V)
Constant current
Pre-set
welding current
Stage:
Fig.11
CEL welding: "Characteristic" parameter setting
Table of factory settings for parameters
The table below shows the factory settings for the parameters
described above.
"Arc-force"
40 A
1 A/V 2 A/V 3 A/V
0
1
2
3
"Characteristic"
4 A/V
Care and maintenance
Warning! Before opening up the welding machine, switch
it off, unplug it from the mains and put up a warning sign
to stop anybody inadvertently switching it back on again.
If necessary, discharge the electrolytic capacitors.
In order to keep your welding machine operational for years to
come, you should observe the following points:
- Carry out safety inspections at the stipulated intervals (see
the section headed "Safety rules")
- Depending on the machine location, but no less often than
twice a year, remove the side panels from the machine and
blow the inside of the machine clean with dry, reduced-blow
compressed air. Do not aim air-jets at electronic components
from too close a range.
- If a lot of dust has accumulated, clean the cooling-air ducts.
- In very dusty environments, clean the dust-filter insert
the cooling-air ducts.
Generator-powered operation
The power source is completely suitable for being run on
generator power, provided that the apparent power delivered by
the generator is at least 6 kVA.
N.B.! The voltage delivered by the generator must NEVER
overshoot or undershoot the range shown in Fig.12 .
195 V~
-15%
Fig.12
Tolerance range of the mains voltage
I (A)
20
230 V~
+15%
and
265 V~