STEALTH DIGI-TIG 180 DC PULSE PFC MV
DATE
MAINTENANCE CHECKS
Monthly
Use dry compressed air to clear the inside of arc welding machine. Pay
examination particular attention to clear any dust on radiator, main voltage transformer,
inductance, IGBT module, the fast recover diode and PCB, etc.
Check the arc welding machine bolt. If loose, tighten. Replace if worn. Scrape
off any rust to ensure it works efficiently.
Quarterly
Check the actual current accords with the displaying value. If not, they should
examination be reconfigured. The actual current value can be measured by the adjusted
plier-type ampere meter.
Annual
Measure the insulating impedance among the main circuit, PCB and case.
examination If it is below 1M
Ω
, insulation may be damaged and should be repaired or
replaced.
5.2 Troubleshooting
• Before arc welding machines are dispatched from the factory, they have already been
carefully checked. Do not allow anyone unauthorised to make any alterations to the
equipment.
• Maintenance work must be carefully undertaken. If any wire becomes loose or
misplaced, it may be a potential danger to the user.
• Only authorised professional maintenance personnel should overhaul the machine.
• If a problem persists and no authorised professional maintenance personnel is
available, contact your supplier.
If there are minor problems with the TIG DC PULSE PFC MV-series welding machine,
consult the following chart:
S/N
PROBLEM REASON
SOLUTION
There is something in the fan
Clear out
Turn on the power source,
1
and the power lamp is on
Fan start capacitor damaged
Change capacitor
but fan doesn’t work
Fan motor damaged
Change fan
2
Number on the display is not
Display LED is broken
Change LED
clear
Max value is not in
Adjust potentiometer Imax
The max and min value
accordance (refer to 3.1)
on the control
3
displayed doesn’t accord
with set value
Min value is not in
Adjust potentiometer Imin
accordance (refer to 3.1)
the current meter.
25