Helvi GALILEO 175, Instruction Manual

Page: 10 / 68

10
In order to avoid damages to the ge-
nerator, we suggest only expert pe-
ople to proceed with the SCRATCH
ARC welding.
NOTES:
a) The arc length generally varies between
3 and 6mm. depending on the type of joint,
type and thickness of material, and so on.
b) The torch is advanced in the direction of
welding, without lateral movement, maintai-
ning the torch angle of 45° to the workpiece.
FIG.B
FIG.A Gas valve
10.0 ORDINARY MAINTENANCE
CAUTION!!!
BEFORE CARRY OUT ANY MAINTENAN-
CE, UNPLUG THE MACHINE FROM THE
MAINS POWER SUPPLY.
The ef fi ciency of the welding system over
time is directly related to the frequency of
maintenance jobs, such as:
For welding machines only need to be taken
care inside. The dustier the working environ-
ment is, the more often this should be done.
- Take off the lid.
- Remove all traces of dust in the inner
parts of the generator with a jet of compres-
sed air at a pressure under 3Kg/cm.
- Check all electrical connections, making
sure that nuts and screws have been fi rmly
tightened.
- Do not delay in replacing worn-out parts.
- Put the lid back on.
- After completing the above operations,
the generator is ready to be restarted fol-
lowing the instructions given in this manual.