BUG-O Systems CW-7 - Manual (Page 6)

6
SETUP AND OPERATION CONT'D.
ADDITIONAL CABLES
The circle welders are supplied with the following cables:
1. CWO-3139 50' (15 m) power cable that connects the power source to the cable connector on
the top gear of the machine.
2. CWO-3040 50' (15 m) weld cable that connects the lead coming out of the top of the machine
using the quick connect connector to your power supply.
3. CWO-9406 50' (15 m) gas shielding hose that connects the gas fitting on the top of the shaft to
your shielding gas supply.
WIRE SPEED AND VOLTAGE ADJUSTMENT
The wire speed control on the front of the CWO-3332 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 pipe, 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.
WHEEL ADJUSTMENT
The CW-7 Racking System CWO-1665 and the Large Vertical Racker CWO-
1690 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 sections in this manual
entitled CWO-3332 Wire Feeder Control for descriptions of the various welding parameters that are available,
as well as CWO-6210 Rotation Control for descriptions of the various speed and directional capabilities.
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.
MAKING A WELD
1. Position the gun to start position using the CWO-1665 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”.
WARNING: When using an open arc process, it is necessary to use correct eye head and
body protection.
Horizontal Rack
Cam
Torch
Holder
Pipe
B A
B A
A B