Firepower MST 180i Operating Manual page 40

Firepower MST 180i
17. Intelligent Fan Control
The Firepower MST 180i is designed with an intelligent fan control. It automatically switches the cooling fan OFF when
it is not required. This has two main advantages; (1) to minimize power consumption, and (2) to minimize the amount
of contaminants such as dust that are drawn into the Power Source.
Note that the fan will only operate when required for cooling purposes and will automatically switch OFF when not required.
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 (Control No. 8). 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 functionality and Spool Gun
functionality
21. 10A Fuse
The 10A fuse is used to protect the spool gun motor.
INSTALLATION, OPERATION AND SETUP 3-12 Manual 0-5339