High-Low Range Switch; Variable Speed Dial - Bridgeport SERIES I Installation, Operation, Maintenance, & Troubleshooting

HIGH-LOW RANGE SWITCH

High-Low Range Switch "A", Figure 2.2, is a
motor reversing switch. When the attachment is in
direct drive (HIGH SPEED), the motor and spindle
are turning in a clockwise direction as viewed from
the top of machine. When the attachment is in "Back
Gear" (LOW SPEED), the spindle will run backwards
(counter-clockwise) unless the motor direction is
reversed by moving switch to "Low".
The back gear lever is marked Hi-Lo. This will
indicate the proper switch position. They should be
positioned alike or the spindle will run backwards.
Spindle should run in clockwise position.

VARIABLE SPEED DIAL

Variable Speed Dial "B", Figure 2.3, visibly indicates, in windows, the speed range that the
machine is operating in, 60 to 500 low range, 500 to 4200 high range.
2-2
- NOTE -
B
Figure 2.3 - Variable Speed Dial
Figure 2.2 - High-Low Range Switch
A
TP5286
TP5287
M-508