Tweco 350 4R Wirefeeder - Manual (Page 28)

4-4 Manual 0-5182
weldskill 250, 350 operation
Operation
A. SPOT TIME
Art # 0-10092
SPOT (s)
0
19 5
10
15
When the TRIGGER MODE SELECTOR switch is switched to the SPOT position, the SPOT TIME control
adjusts the duration of a single spot weld.
B. TRIGGER MODE SWITCH
The Trigger Mode Selector switch selects the desired welding mode.
Art # A-09922
TRIGGER
SPOT
2T
NORMAL
4T
LATCH
Mode Functional Description
NORMAL (2T)
This mode of welding is used to weld two or more components together with
a continuous weld. Pressing and holding the MIG torch trigger switch will
activate the power source such that welding can commence. Releasing the
MIG torch trigger switch will de-activate the power source.
SPOT
This mode of welding is used to produce short welding runs of a pre-set
duration. This duration is set using the Spot Time Control (A). Pressing and
holding the MIG torch trigger switch will activate the power source until such
time as the desired Spot time has elapsed after which the power source will
de-activate.
The spot time period is set by the SPOT TIME control (A) located in the
wiredrive compartment.
LATCH (4T)
This mode of welding is mainly used for long weld runs. The MIG torch
trigger switch is depressed (and released) to activate the power source, and
then depressed (and released) a second time to de-activate the power source.
This obviates the need for the operator to depress the trigger for the complete
length of the weld run.
Table 4-1 Trigger Mode Switch Functional Description
C. LOCAL/REMOTE MODE SWITCH
The Local/Remote switch is used to switch between local and Remote modes.
Local Mode
Set the switch in the Local position when using the power source only (With no optional external
wirefeeder).
Remote Mode
Set the switch in the Remote position when using an optional remote wirefeeder. This will enable the
wirefeeder and allow the wirespeed to be controlled from the remote wirefeeder wirespeed control. The
other controls such as trigger mode, inch, gas purge, spot, burnback will still be controlled from the
power source.