P/N 92974, Rev. 1 Page 53
2. Turn on power at the motor controller.
3. Adjust the bar rotation speed as required by the bore size, tooling, and
material requirements.
4. Adjust the feed rate.
The motor has thermal and current overload protections built in. If the motor is
pushed beyond its protected range, it will stop. To prevent this, monitor the amp
meter on the controller and do not let the reading exceed its rated maximum
amperage (10.5 amps for the 230V and 20 amps for the 120V).
This motor is also reversible, allowing it to change the bar rotation direction.
Always stop the motor completely before switching the rotation
direction. Failure to do so may damage both the motor and the
controller.
Brush wear depends on the load and RPM. Regularly check both
brushes for excessive wear and replace if necessary.
4.3.1.3 Pneumatic drive
Do the following to start the pneumatic drive:
1. Using the quick disconnect fittings, connect the pneumatic motor to the
pneumatic conditioning unit (PCU).
2. Check that the incoming air pressure is 90-psi (6.2-bar) minimum.
3. Control the boring bar speed by slowly adjusting the air control valve.
The 3 hp (2.24 KW) air motor is reversible. Connect the airline so that,
as the boring bar rotates, the tool bit presents its cutting edge to the
workpiece. If the tool bit is backward, reverse the quick disconnects at
the motor to change the bar rotation direction.
If the machine stops moving unexpectedly, lock out the pneumatic
safety valve located at the filter lubricator assembly before performing
any troubleshooting.
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