Tweco 141i Fabricator - Manual (Page 43)

Fabricator 141i
Manual 0-51 45 3-13 INSTALLATION, OPERATION AND SETUP
17. Intelligent Fan Control
When Power Supply is first turned on it will default in MIG Mode. The Fan will operate for approximately 10
seconds, then shut down.
When triggered in MIG mode, fan will not turn on until Power Supply reaches temperatures in which cooling
is required. When in Lift TIG mode, as soon as output is enabled, the fan will come on immediately and will
not shut down until welding has ceased and Power Supply is at proper operating temperature. When set to
Stick mode, fan will turn on immediately and will not turn off until welding has ceased and Power Supply is
at proper operating temperature.
Note in STICK mode the fan operates continuously.
18. Local / Remote Switch (located in wirefeed compartment)
The local/ remote switch is used only when a remote control device (such as a TIG Torch with remote current
control) is fitted to the Power Source via the remote control socket (8 Pin Remote Socket). When the local/
remote switch is in the remote position, the Power Source will detect a remote device and work accordingly.
When in the local mode, the Power Source will not detect the remote device and will operate from the Power
Source controls only. Note that the trigger will operate at all times on the remote control socket irrespective
of the position of the local remote switch (ie in both local and remote modes).
Should a remote device be connected and the local/ remote switch set to remote, the maximum setting of
the Power Source will be determined by the respective front panel control, irrespective of the remote control
device setting. As an example, if the output current on the Power Source front panel is set to 50% and the
remote control device is set to 100%, the maximum achievable output from the Power Source will be 50%.
Should 100% output be required, the respective front panel control must be set to 100%, in which case the
remote device will then be able to control between 0-100% output.
19. Burnback Control (located in wirefeed compartment)
The Burnback control is used to adjust the amount of MIG wire that protrudes from the MIG Gun after the
completion of MIG welding (commonly referred to as stick-out). To decrease the Burnback time (or lengthen
the amount of wire protruding from the MIG Gun at the completing of welding), turn the Burnback control
knob counterclockwise. To increase the Burnback time (or shorten the amount of wire protruding from the
MIG Gun at the completing of welding), turn the Burnback Control knob clockwise.
20. MIG Gun & Spool Gun Switch
The MIG Gun / Spool Gun switch is used to switch welding mode between MIG Gun function and Spool Gun
function.
21. 10A Fuse
The 10A fuse is used to protect both the spool gun motor and internal motor.