Tweco 300 MST Arcmaster - Manual (Page 32)

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Feature Description
Intelligent Fan Control • The intelligent cooling system is designed to reduce
dust and foreign material build-up, while providing
optimum cooling.
• Fan speed reduces approximately 30 seconds after
machine is turned on.
• Fan speed increases when internal components reaches
operating temperature.
ON/OFF Switch • Mains ON/OFF switch located on rear panel.
Voltage Reduction Device (VRD)
(shipped de-activated, field capable)
See Section 10 for activation instructions.
Reduces the OCV when the power supply is not in use.
Eliminates the need for add on voltage reducers and has
no effect on arc starting.
• VRD fully complies to IEC 60974-1
• When Stick mode is selected the green VRD light is
ON when not welding and red when welding.
• When in TIG modes VRD is OFF.
Control Knob • For the selected weld parameter, rotating the knob
clockwise increases the parameter.
• Rotating the knob counter-clockwise decreases
the parameter.
• A selected weld parameter value can be adjusted at
any time even while welding.
• Pushing the knob in sets the selected parameter then
displays the next parameter.
Self Diagnosis Using Error Codes • An error code is displayed on the
Digital Meter when a
problem occurs with Mains supply voltage or internal
component problems.
Save/Load Function
•
A total number of 5 programs can be saved into the
300 MST memory.
SAVE the Current Weld Parameters into Memory
• Press and HOLD the SAVE button . Beep will sound and
digital display will show a number 1.
•
Select a memory location by rotating the control knob,
1 to 5 is displayed on the meter.
•
After selecting the desired memory location (i.e. 1 to 5),
press the parameter button and the machine give a beep
to confirm the weld parameters from the control panel
are saved.
LOAD (retrieve) a Program to Control Panel
• Press and HOLD the LOAD button. Beep will sound
and digital display will show a number 1.
•
Select a memory location by rotating the control knob,
1 to 5 is displayed on the meter.
After selecting the desired memory location (i.e. 1 to 5), press
the parameter button and the machine give a beep to confirm
the weld parameters are loaded onto the control panel.