Maintenance - Migatronic FOCUS TIG 160 DC HP PFC Manuel D'instruction

Gas post-flow
The gas post-flow time is the period from the
extinction of the arc to the interruption of the gas
supply. The time is indicated in seconds from 0-
30 secs. The time is adjusted so the tungsten electrode and
weld are protected against oxidation.
Current mode control
Internally
In internal mode the current is adjusted by means of
the turn button next to the display.
Torch control
Adjustment is made by means of the adjustment knob
on the welding torch if such one exists. The maximum
welding current is adjusted on the knob on the machine control
panel. By means of the torch adjustment it is possible to de-
crease the current to the minimum current of the machine, but
not to exceed the maximum setting on the machine control
panel.
Remote control
Adjustment is made by means of pedal. The
maximum welding current is adjusted on the button
on the control panel. By means of the pedal it is possible to vary
the amount between minimum and maximum of the set current
on the display.
When the feet pedal is connected, the machine must always be
in 2-times trigger mode and selection of the functions 4-times
and slope-down is not possible.
Fixed functions
A number of functions are fixed and cannot be connected or
disconnected from the control panel.
Anti-freeze
The antifreeze function is always active. When welding MMA or
TIG it may occur that the electrode sticks to the work piece. The
machine will register that the electrode sticks and it will then
decrease the welding current to 10 A which make it easy to
break the electrode off the work piece. Welding can then be
restarted as usual.
Pre-flow
Pre-flow is the period of time for which gas flows after the torch
switch is pressed and before the HF arc is established. In the
LIFTIG process the period is the time until the torch is lifted
away from the work piece. Time is set to 0.1 sec.
Safety timer
If the welding arc hasn't been established after 2 sec., using
contact-free striking in TIG mode, then the machine is reset and
the high voltage generator is switched off.

MAINTENANCE

The machine requires periodical maintenance and cleaning in
order to avoid malfunction and cancellation of the guarantee.
WARNING !
Only trained and qualified staff members can carry out
maintenance and cleaning. The machine must be
disconnected from the mains supply (pull out the mains
plug!).
Thereafter, wait around 5 minutes before maintenance and
repairing, as all capacitors need to be discharged due to
risk of shock.
Power source
- Clean the fan blades and the components in the cooling pipe
with clean, dry, compressed air as required.
- A trained and qualified staff member must carry out
inspection and cleaning at least once a year.
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