NewArc Viper 2500S Operational Manual page 12

1.4 Overview of Machine
13. Thermal cut-out Indicator
Indicates that the thermal cut-out in the machine has operated. (see paragraph 5.1 in the fault finding and
maintenance section for possible reasons) control to set the desired welding current, the digital display will
indicate the setting.
14. Gas out connector
This is a female quick coupling with an internal shut- off valve. To connect, push the male connection
on the end of the TIG torch adaptor into the coupling until you hear a click. To fully disconnect, push the
knurled ferrule on the connector inwards towards the Viper until it stops. The shut off valve in the connector
automatically closes when the connection is separated.
15. Positive out connector
Main welding power output connector, positive polarity.
16. Negative out connector
Main welding power output connector, negative polarity.
17. Positive in connector
Main power in connector, must be connected by welding cable to the positive terminal of the power source.
18. Negative in connector
Main power in connector, must be connected by welding cable to the negative terminal of the power source.
19. On/Off switch
Switches the Viper on and off.
20. Fuse Holder
Holds the main protection fuse for the Viper.
21. Gas In connector
Must be connected to the pressure regulator on the gas cylinder by means of a suitable hose.
22. Remote control socket
For connecting external remote control units, these are the RC300 remote control, the RPC300 pulse unit
and the RFP300 foot pedal. There is no switch for remote operation, plugging an external unit into the socket
automatically selects remote operation and disables the internal current control.
12 VIPER 2500s