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Operating Instructions
1.0 What is Capacitance Welding?
An electrical charge at a preset energy level is stored. This charge is then released across two
electrodes, the positive electrode being the workpiece. This discharge of stored energy is sufficient to
weld the workpiece.
Capacitance welding is generally used for the welding of similar and dissimilar wires (thermocouple
junction welds) and for impact welding wires to a conductive material.
2.0 Installation and set up.
2.1 Mains connection.
The mains lead supplied is connected to the IEC socket at the rear of the SR80 and should then be
connected to a standard 240V / 50Hz supply unless otherwise stated.
2.2 Argon supply connection.
If argon is to be used for welding, connect the argon hose to the spigot at the rear of the instrument
(do not over tighten) and connect the other end to the pressure regulator on an argon supply.
2.3 Footswitch connection.
If using the footswitch, plug the 3.5mm jack into the footswitch socket on the instrument.
2.4 Wire holding pliers connection.
Plug the wire holding pliers into one of the red 4mm sockets on the front panel, labelled x1, x2 or x3
(see initial settings).
2.5 Viewing filter attachment.
Slide the viewing filter over the argon shield housing - this will be easier if the bottom ends of the filter
are pulled slightly apart with thumbs.
Note that the filter must be attached to protect the eyes from welding flashes, even if goggles are worn
the filter should be attached to prevent the possibility of arc-eye from non-operators.
3.0 Operation and controls.
3.1 Initial settings.
BEFORE USE ENSURE THAT THE ROCKER SWITCH ON THE BACK OF THE UNIT IS SET TO 'DISCHARGE'
FOR CAPACITANCE DISCHARGE WELDING OR TO 'RESISTANCE' IF USING THE SR81 RESISTANCE SPOT
WELDING RIG.
Switch on the mains supply with the rocker switch built into the IEC connector on the rear panel - the
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Temperature Technology Ltd.
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