Firepower MST 140i, Operating Manual

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Firepower MST 140i
INSTALLATION, OPERATION AND SETUP 3-14 Manual 0-5338
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.
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(Back)
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.
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19
(Inside side panel)
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.