EWM Tetrix 351 - Design and Function - TIG Welding; Basic TIG Setup, Shielding Gas, and Testing; TIG Cold or Hot Wire Welding Connection

Design and function
TIG welding
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099-000115-EW501
17.06.2015
5.8 TIG welding
• Fasten the gas hose to the shielding gas connecting nipple at the back of the machine using the crown
nut.
5.8.1 TIG cold or hot wire welding
• Screw the gas hose connection nipple (intermediate hose package) onto the output side of the
pressure regulator.
5.8.2 Setting the shielding gas quantity
Rule of thumb for the gas flow rate:
Diameter of gas nozzle in mm corresponds to gas flow in l/min.
Example: 7mm gas nozzle corresponds to 7l/min gas flow.
Incorrect shielding gas setting!
• 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!
5.8.3 Gas test
Operating
element
Action
Result
1 x
Select gas test
"Gas pre-flow time (TIG)" signal light is on. Shielding gas flows for
approx. 20 seconds. The gas test can be ended immediately by
pressing it once more.
5.8.4 “Purge hose package” function
Operating
element
Action
Result
5 s
Select hose package rinsing
"Gas pre-flow time (TIG)" signal light flashes.
The function is ended by pressing the button again.
If the "Rinse hose package" function is not ended by pressing the "Gas and current parameters"
button again, shielding gas will flow until the gas cylinder is empty!