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Manual Version 1.3 - June/2017
20
ALUMTIG 200
ALUMTIG 200
8.10 Arc difficult to start or will not start DC welding
8.11 Arc difficult to start or will not start DC welding
POSSIBLE REASON
SUGGESTED SOLUTION
Incorrect machine set up
Check machine set up is correct.
No gas, incorrect gas flow
Check the gas is connected and cylinder valve open,
check hoses, gas valve and torch are not restricted.
Set the gas flow between 15–25 CFH (7–12 LMN)
flow rate.
Tungsten is contaminated
Remove 3/8” (10mm) of contaminated tungsten and
re‑grind the tungsten.
Incorrect tungsten size and or tungsten being used
Check and change the size and or the tungsten if
required.
Loose connection
Check all connectors and tighten.
Ground clamp not connected to work
Connect the ground clamp directly to the work
piece wherever possible.
Loss of high frequency
Check torch and cables for cracked insulation or
bad connections.
POSSIBLE REASON
SUGGESTED SOLUTION
Incorrect machine set up
Check machine set up is correct.
No gas, incorrect gas flow
Check the gas is connected and cylinder valve open,
check hoses, gas valve and torch are not restricted.
Set the gas flow between 15–25 CFH (7–12 LMN)
flow rate.
Incorrect tungsten size and or tungsten being used
Check and change the size and or the tungsten if
required.
Tungsten is contaminated
Remove 3/8” (10mm) of contaminated tungsten and
re grind the tungsten. Use a pointed tungsten with
AC squarewave inverter machines. The point will
round off after welding.
Loose connection
Check all connectors and tighten.
Ground clamp not connected to work
Connect the Ground clamp directly to the work
piece wherever possible.
Loss of high frequency
Check torch and cables for cracked insulation or
bad connections.
7. GTAW (TIG)