Final inspection of power source and settings 35
10.7)
Functional MMA tests
Conditions
- Power source powered, MMA mode
- Electrode holder and earth lead connected
- Welding circuit not connected to protection earth potential.
Checks
- Perform various functional tests in MMA mode, making sure
the controls on the panel work, i.e.:
correct arc striking
correct maintenance of arc stability
welding even at max. power, according to data given in the
table below:
- Repeat the above tests with earth lead connected to protec-
tion earth potential.
10.8)
Functional TIG tests
Conditions
-
HF board inserted in connectors of board
15.14.285/15.14.315 and secured with relevant fasteners
- Power source on, TIG mode.
- Welding circuit not connected to protection earth potential.
Checks
- Perform various welding tests in TIG mode, making sure the
controls on the panel work, i.e.:
correct activation of solenoid valve and gas delivery
idle HF discharge in order to discover HF leakage within
central adapter
correct arc striking in TIG DC LIFT, TIG DC HF and TIG AC
modes
correct maintenance of arc stability
welding even at max. power
check various functions (2 stage, 4 stage, slope up and
down, BI-LEVEL, pulsation…)
perform welding tests in DC and AC with various current,
frequency and pulsation levels according to the contents
of the table below:
- Repeat the above tests with earth lead with connected to
protection earth potential.
10.9)
Checking current delivered
Conditions
- Ammeter clamped on earth lead.
- Power source on, set to TIG DC mode.
Checks
- Perform various welding tests in TIG mode, making sure the
value read off the power source's panel matches the clamp-
on ammeter's reading, i.e.:
WARNING!:
If you are using a shunt & multimeter
for measuring the output current, perform tests in
TIG LIFT mode so as not to risk damaging the instru-
ment as a result of HF!
Electrode type
Diameter
Amperage
Basic
2.5
95
Basic
5
180
Rutile
2.5
95
Rutile
5
180
Set value
Reading
Reading
on panel
on ammeter
50 A
50 ± 2 A
50 ± 5A
100 A
100 ± 2 A
100 ± 5A
200 A
200 ± 2 A
200 ± 5A
Electrode type
red
red green
green
Diameter
1.6 2.4 1.6 2.4
Polarity
DC DC AC AC
Const. current
YES YES YES YES
Pulsed
YES YES YES YES
Medium freq.
YES YES -
-
Amperage
10-100 100-200 10-100 100-200
