NewArc RT5000 Instruction Manual page 8

SECTION 4 — OPERATION
4.2 Description of controls (cont..)
10 Post Gas time - This control sets the post gas delay, This is the period of time that the gas will continue flowing after
the arc has extinguished. The length of this period is determined by the position of the control.
11. -ve weld terminal - Main welding power output connector, negative polarity.
12. +ve weld terminal - Main welding power output connector, positive polarity.
13. Auxiliary supply fuse
6.3A 'slow blow' rating.
14. Main supply fuse - Fuse 3.15A slow blow, 32 x 6.3mm ceramic body.
15. Mains Input - Three phase mains cable.
16. Main 3P Isolation switch
17. Gas in connector - Must be connected to the pressure regulator on the gas cylinder by means of a suitable hose.
4.3 Operation
4.3.1 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 mains switch to the on position, the digital will light and after a 4 second delay the machine is ready to weld.
Adjust the current control to the recommended setting for the size and type of welding electrode to be used.
Adjust the Arc Force control to your personal preference for the size and type of welding electrode to be used.
The RT4000/RT5000 is suitable for welding all types of electrodes within the current rating of the machine (see Technical
Data)
The RT4000/RT5000 should never be used with arc-air gouging or cutting electrodes.
4.3 2 MMA Welding with remote control
Select welding polarity as in paragraph 4.3.1.
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Plug the control cable supplied with the remote control into the remote control socket on the front of the RT4000/
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RT5000.
Plug the remote control onto the other end of the control cable.
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Adjust the current control on the remote to the recommended setting for the type and size of welding electrode
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being used. (The standard New-Arc RC300 remote does not have current settings but is marked 1 to 10, for the
RT4000 allow 40A per division and for the RT5000 allow 50A per division).
Turn the mains switch to the on position, the machine is ready to weld.
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4.3.3 TIG Welding
• Switch the mode switch to 'TIG' and select either 2T or 4T torch mode.
Connect the TIG torch power cable to the negative output connector.
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Connect the TIG torch gas connector to the gas quick coupler.
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Connect the welding ground to the positive output connector.
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• Connect a supply of pure argon to the connector at the rear of the machine.
Turn the mains switch on the RT4000/RT5000 to the on position, the digital display will indicate current when the
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machine is ready for use.
Adjust the slope, current and post gas controls to the required settings, you are now ready to weld.
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- protects the auxiliary supply from the remote control socket. Fuse type is 20 x 5mm glass body,
- Switches the machine on and off.
RT5/4000
8