Doc No. 740048
9
MODEL 96
TUBE TO TUBESHEET WELD HEAD
OPERATION MANUAL
4.1 ROTATION (SPEED) MANUAL CALIBRATION
(contd.)
4.3 Add one additional level with a duration of 5 or more seconds, with
the rotation mode set to “OFF”. This additional level (with rotation off)
will hold the electrode at its stopped position allowing the operator to
see if it traveled too far or not far enough.
4.4 Be sure the power supply is in the “TEST” mode. Make note of the
electrode start location, and run the program. Should the electrode
rotate too fast, stopping past the start location (traveling more than
360 degrees), slow it down by turning the potentiometer counter
clockwise (CCW). Should the rotation be too slow, stopping before it
reaches its start location, (rotating less than 360 degrees) turn the
potentiometer clockwise (CW). Continue this procedure until the
electrode stops after 360 degrees of travel.
5.0 MANDREL INSTALLATION
The Model 96 uses an I.D. expanding mandrel to position and hold
the weld head firmly in place, and concentric to the tube being welded.
Mandrels are available for any size tube I.D. from 0.375” (9.5mm) through
2.0” (50.8mm).
5.1 To install the mandrel,
first be sure that the air source is
disconnected, and that the air actuation switch is in the
“release” (UP) position.
This is to prevent accidental mandrel
actuation, (expansion) and possible over-stretching of the collet.
See fig. 6.
