Tweco 300 ACDC Arcmaster - Manual (Page 32)

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4.05 Power Source Features
Feature Description
New Digital Control • Almost all welding parameters are adjustable.
Touch Panel Switches • Touch switches eliminate mechanical damage.
Front Control Cover • Protects front panel controls.
Digital Meter • Displays selected weld parameter value.
• Displays weld current when welding.
• Displays weld current for 20 seconds after weld has
been completed.
• A selected weld parameter value can be adjusted
at any time even while welding.
Intelligent Fan Control • The intelligent cooling system is designed to reduce
dust and foreign material build-up, whilst 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
• Primary voltage Supply ON/OFF switch located on
rear panel.
Voltage Reduction Device (VRD)
(shipped de-activated, field capable)
See Section 11 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 displays actual arc voltage.
Self Diagnosis using Error Codes • An error code is displayed on the Digital Meter when a
problem occurs with Primary supply voltage or internal
component problems.
Refer to troubleshooting guide.
Table 4-6. Power Source Features