Shielding Gas Volume Settings - EWM TIGSPEED OSCILLATION DRIVE 45 COLDWIRE Operating Instructions Manual

Design and function
Transport and installation
•
Place the shielding gas cylinder into the relevant cylinder bracket.
•
Secure the shielding gas cylinder using a securing chain.
•
Tighten the pressure regulator screw connection on the gas bottle valve to be gas-tight.
•
Tighten gas hose on pressure regulator to be gas tight.
•
Fasten the gas hose to the shielding gas connecting nipple at the back of the machine using the crown
nut.

5.1.13 Shielding gas volume settings

Electric shocks!
When setting the shielding gas quantity, high voltage ignition pulses or open circuit
voltage are applied at the welding torch; these can lead to electric shocks and burning
on contact.
•
Keep the welding torch electrically insulated from persons, animals or equipment during the
setting procedure.
If the shielding gas setting is too low or too high, this can introduce air to the weld pool and may cause
pores to form. Adjust the shielding gas quantity to suit the welding task!
•
Slowly open the gas cylinder valve.
•
Open the pressure regulator.
•
Switch on the power source at the main switch.
•
Trigger gas test > see 5.1.13.1 chapter function (welding voltage and wire feed motor remain switched
off – no accidental arc ignition).
•
Set the relevant gas quantity for the application on the pressure regulator.
Setting instructions
Welding process
MAG welding
MIG brazing
MIG welding (aluminium)
TIG
Helium-rich gas mixtures require a higher gas volume!
The table below can be used to correct the gas volume calculated where necessary:
Shielding gas
75% Ar/25% He
50% Ar/50% He
25% Ar/75% He
100% He
28
CAUTION
Recommended shielding gas quantity
Wire diameter x 11.5 = l/min
Wire diameter x 11.5 = l/min
Wire diameter x 13.5 = l/min (100 % argon)
Gas nozzle diameter in mm corresponds to l/min gas throughput
Factor
1.14
1.35
1.75
3.16
099-000181-EW501
30.06.2017