ESAB fabricator 141i Service Manual page 24

ESAB FABRICATOR 141i
Note that the Local/ Remote Switch (Control No. 18) located in the wirefeed compartment should be set to Remote for remote
amperage/voltage controls to operate.
9. Multifunction Control - Voltage, Down Slope & Arc Force
The multifunction control knob is used to adjust Voltage (MIG Mode), Down slope (LIFT TIG Mode) and Arc Force (STICK Mode)
depending on the welding mode selected.
NOTE!
The preview functionality provided on this power source is intended to act as a guide only. Some dif-
ferences may be observed between preview values and actual welding values due to factors including
the mode of welding, differences in consumables/gas mixtures, individual welding techniques and the
transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are required (in the
case of procedural work), it is recommended that alternate measurement methods be utilized to ensure
output values are accurate.
When MIG Mode is Selected
In this mode the control knob is used to adjust the MIG welding voltage of the Power Source. The welding voltage is increased by
turning the knob clockwise or decreased by turning the knob counterclockwise. The optimum voltage level required will depend
on the type of welding application. The setup chart on the inside of the wire feed compartment door provides a brief summary
of the required output settings for a basic range of MIG welding applications.
When STICK Mode is Selected
In this mode the multifunction control knob is used to adjust arc force. Arc force control provides an adjustable amount of welding
force (or "dig") control. This feature can be particularly beneficial in providing the operator the ability to compensate for variability
in joint fit-up in certain situations with particular electrodes. In general increasing the arc force control toward '10' (maximum
arc force) allows greater penetration control to be achieved. Arc force is increased by turning the control knob clockwise or
decreased by turning the knob counterclockwise.
When LIFT TIG Mode is Selected
In this mode the multifunction control knob is used to adjust down slope. Down slope allows the user to select the ramp down
time of the amperage at the completion of the weld. The main function of down slope is to allow the welding current to be gradu-
ally reduced over a pre-set time frame such that the welding pool is given time to cool sufficiently.
Note that when in 2T normal mode (Control No. 11), the Power Source will enter down slope mode as soon as the trigger switch
is released (ie if the multifunction control knob is set to 5, the Power Source will ramp down from the present welding current to
zero over 5 seconds). If no down slope time is set then the welding output will cease immediately. If the Power Source is set to
4T latch mode, to enter down slope mode the trigger must be held in for the selected time period (ie press and release trigger
to commence welding, then press and hold trigger again to enter down slope mode). Should the trigger be released during the
down slope phase (4T only), the output will cease immediately.
10. Arc Control (Inductance)
The arc control operates in MIG mode only and is used to adjust the intensity of the welding arc. Lower arc control settings make
the arc softer with less weld spatter. Higher arc control settings give a stronger driving arc which can increase weld penetration.
Soft means maximum inductance while Hard means minimum inductance.
11. Trigger Mode Control (MIG and LIFT TIG Mode only)
The trigger mode control is used to switch the functionality of the of the MIG or TIG Trigger Switch between 2T (normal) and 4T
(latch mode)
2T (Normal Mode)
In this mode, the MIG or TIG Trigger Switch must remain depressed for the welding output to be active. Press and hold the MIG
or TIG Trigger Switch to activate the Power Source (weld). Release the MIG or TIG Trigger Switch to cease welding.
OPERATION 4-4 Manual 0-5448