10.0 Maintenance; Types Of Malfunctioning/Welding Faults - Causes - Remedies - Saf-Fro PRESTOTIG 180 FORCE Instrucciones De Seguridad, Empleo Y Mantenimiento

EN
properly and comfortably selection of "four stroke" mode is recom-
mended.
2. Pedal-Operated Remote Control:
this mode is especially useful in combination with
pedals equipped with a microswitch with a trigger
function. This selection involves inhibition of the up
and down slopes. Welding current can be adjusted
with the pedal between the minimum value and the
panel setting.
The microswitch in the control pedal means you can start welding
by simply pressing the pedal, i.e. without using the TIG torch but-
ton. To use this peripheral device properly and comfortably selec-
tion of "four stroke" mode is recommended.
NOTE: IN THIS MODE, WHEN THE WELDING PROCESS IS
NOT ACTIVE, USING THE REMOTE CONTROL (PEDAL) WILL
PRODUCE NO CHANGE IN THE CURRENT INDICATED ON
THE DISPLAY.

10.0 MAINTENANCE

IMPORTANT: DISCONNECT THE POWER PLUG AND WAIT
AT LEAST 5 MINUTES BEFORE CARRYING OUT ANY MAIN-
TYPES OF MALFUNCTIONING
WELDING FAULTS
The generator does not weld: the digital switch
is not lit.
During welding suddenly the outgoing current is
interrupted, the the orange led goes on.
Welding power reduced.
Excessive jets.
Craters.
Inclusions.
Inadequate penetration.
Sticking.
Blowing and porosity.
Jacks.
The electrode fuses in TIG.
MAINTENANCE
TENANCE. MAINTENANCE MUST BE CARRIED OUT MORE
FREQUENTLY IN HEAVY OPERATING CONDITIONS.
Carry out the following operations every three (3) months:
Carry out the following operations every six (6) months:
10.1
POSSIBLE CAUSES
A) The main switch is off.
B) The power lead is interrupted (lack of one or
two phases).
C) Other.
Overheating has occurred and the automatic
protection has come on. (See work cycles).
Outgoing wires are not correctly attached.
A phase is missing.
Welding arch too long.
Welding current too high.
Fast removal of the electrodes.
Inadequate cleaning and bad distribution of
coating.
Faulty movement of the electrodes.
Forward speed too high. Welding current too
low.
Welding arch too short.
Current too low.
Damp electrodes. Arch too long. Wrong torch
polarity.
Currents too high. Dirty materials.
Wrong torch polarity. Type of gas not suitable.
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- Replace any illegible labels.
- Clean and tighten the welding terminals.
- Replace damaged gas tubing.
- Repair or replace damaged welding cables.
- Have specialized personnel replace the power cable if dam-
aged.
- Remove any dust inside the generator using a jet of dry air.
- Carry out this operation more frequently when working in
very dusty places.
TYPES OF MALFUNCTIONING/WELDING FAULTS –
CAUSES – REMEDIES
CONTROLS AND REMEDIES
A) Switch on mains.
B) Verify and repair.
C) Ask for the intervention of the Assistance Centre.
Keep generator switched on and wait till temperature
has dropped again (10-15 minutes) to the point where
the orange switch goes off again.
Check that wires are intact, that the pliers are suffi-
cient and that they are applied to welding surface
clean from rust, paint or oils.
Wrong torch polarity, lower the current values.
Increase current values.