BUG-O Systems CW-18 - Manual (Page 7)

7
SETUP AND OPERATION, CONT’D.
WIRE SPEED AND VOLTAGE ADJUSTMENT
The wire speed control on the front of the CWO-1805 Wire Feed Control
box has a dial that is calibrated directly in inches per minute. Set
the voltage using the control on the power source.
RISE AND FALL OF THE CAM
All circle welders are equipped with a rise and fall cam assembly. The
cam assembly must be aligned before any other settings can be made.
To align the cam rotate the machine so the horizontal rack is parallel
to the vessel, then adjust the gun holder so it is perpendicular to the
horizontal rack. Position torch tip to top dead center of joint. Loosen
the set screws in the brass block on the cam, and rotate the cam to
the vertical position as shown. Refasten set screws.
CAM SETTING
The cam setting is equal to distance “B” subtracted from distance “A”.
Example:
Let A=3 and B=2
3-2=1
The cam setting is 1.
WHEEL ADJUSTMENT
The CW-18 Racking System CWP-3365 and the Small Vertical Racker CWO-
1675 are equipped with adjustable wheels. Always check these components
for proper wheel adjustment before using the machine. The wheels need
adjustment if you can cock or wiggle the components out of alignment. The
wheels should be snug but not prohibit movement along the path of travel. The
wheels with the hex stand offs are adjustable. To adjust the wheels, loosen the
hex bolt (A) until the adjustable bushing (B) can be rotated. Correct the wheel
alignment by rotating the adjustable bushing (B). Once adjusted, hold the
adjustable bushing (B) while tightening the hex bolt (A). Recheck alignment.
MACHINE CONTROLS
Operational parameters can be set using the two control boxes. Please
refer to the section in this manual entitled CWO-6210-CW18 Rotational
Control for descriptions of the various speed and directional capabilities. For
the CWO-1805 Wire Feeder Control, refer to page 8 of this manual.
MAKING A WELD
B A B A
A B
Cam
Torch
Holder
Vessel
Horizontal Rack
1. Position the gun to start position using the CWO-3365 Racking System.
2. Connect the ground cable to the workpiece. The ground cable must make good electrical
contact with the work.
3. Position the electrode in the joint. The end of the electrode may be lightly touching the work.
4. With manual/auto switch in the “OFF” position, set rotation direction and speed.
5. Weld process and rotation are both started by throwing the manual/auto switch to auto.
6. Weld process and rotation are stopped by throwing the manual/auto switch to “OFF”.