Operation - NewArc RT2500 Operational Manual

3. Operation

MMA Welding
• For straight polarity welding, connect the electrode holder to the positive weld terminal and the earth
return lead to the negative weld terminal. For reverse polarity welding, reverse these connections.
• Turn the mode switch to 'local' , the machine is now in MMA mode.
• Adjust the current control to the recommended setting for the size and type of welding electrode to
be used.
• Turn the mains switch to the on position, the power on indicator will light and the machine is ready
to weld.
• The R2500 is suitable for welding all types of electrodes within the current rating of the machine,
normally up to 5.0mm. The R2500 should never be used with arc-air gouging or cutting electrodes.
MMA Welding with remote control
• Select welding polarity as in paragraph 4.2.1.
• Turn the mode switch to remote.
• Plug the control cable supplied with the remote into the remote control socket.
• Plug the remote control onto the other end of the control cable.
• Adjust the current control on the remote to the recommended setting for the type and size of welding
electrode being used. (The standard Newarc RC300 remote does not have current settings but is marked
1 to 10, for the R2500 allow 25A per division).
• Turn the mains switch to the on position, the machine is ready to weld.
TIG Welding with TIG300
Do not use the TIG300 until you have read and fully understood the TIG300 manual.
• Connect the TIG300 to the R2500 as per the diagrams in the TIG300 manual.
• Turn the mode switch to TIG remote, All control of the welding procedure is now passed to the TIG300.
• Select welding mode and current by adjusting the controls on the TIG300 with reference to the
TIG300 manual.
• Turn the mains switch to the on position, the power on indicator on the R2500 and the display on the
TIG300 will light up, the machine is ready to weld.
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RT2500