CHAPTER 3: OPERATING INSTRUCTIONS
THERMOCOUPLE WELDER
3-2
990-070
Button can be placed on either side of the Handpiece to accommodate left or right hand operation. See
Chapter 4.
Verify that the WELD READY lamp is on and then gently slide the closed Wire Clamp Jaws into the
Weld Chamber. When the ends of the thermocouple wires touch the Arc Button, located inside the
Weld Chamber, a solenoid lightly clamps the Wire Clamp Jaws and then automatically fires the power
supply. Remove the Handpiece after the “thump” sound has occurred, which indicates that the TCW has
fired.
Open the Wire Clamp Jaws and remove the welded thermocouple wire. The weld bead should appear
round and without oxidation. It should not be necessary to change the wire gauge setting more than 2 or
3 wire sizes. Adjust the WIRE GAUGE SELECTOR to produce the desired weld bead. Turning the
Control CLOCKWISE will INCREASE the size of the weld bead.
NOTE:
If the weld bead is too large, it cannot be pulled back through the Wire Clamp guide tube. See
Chapter 5, Section II, Troubleshooting.
