Kemppi MasterTig 235ACDC GM Operating Manual page 72

Trigger logic 4T
Trigger operation mode of a welding torch. When you press the trigger down in 4T mode, shielding gas
starts to flow but the arc won't ignite until you release the trigger. To stop welding you press the trigger
down again and then release it to extinguish the arc.
U
Upslope
Welding function that determines the time, during which the welding current gradually increases to
desired welding current level at the start of the weld. The value for the upslope time is preset by the user.
The value zero means the function is off.
V
VRD (voltage reduction device)
A safety device used in welding equipment to reduce the open-circuit voltage to maintain below a certain
voltage value. This reduces the risk of electric shock particularly in dangerous environments, such as
closed or damp spaces. VRD may also be required by law in certain countries or regions.
W
Weld Assist
A wizard-like utility for easy selection of welding parameters. The utility walks the user step-by-step
through the selection of required parameters, presenting the selections in an easily understandable way
for a non-technical user. Available in MTP35X control panel in MasterTig product family.
© Kemppi
MasterTig 235ACDC, 325DC, 335ACDC
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Operating manual - EN
1920900 / 1939