19 PB70 - W18XC1052 - Revised 040113
OPERATION - SPINDLE - SPEED CONTROL
The PB70 has variable speed control with load feedback,
this means the drill will attempt to maintain the set speed
when under load, by compensating electronically.
Speed is adjusted by rotating the speed control knob (K).
Available speeds are 60 - 140 with the gearbox in the low
gear and 200 - 470 with the gearbox in the high gear.
Always use the gear closest to the speed required, then
make fine adjustments electronically.
Slowing the motor too much will reduce the cooling action
of the cooling fan and the machine may overheat faster
than normal.
K
OPERATION - SPINDLE DIRECTION - FWD / N / REV
The spindle direction should always be selected BEFORE
operating the motor start/stop switch (H). The spindle
direction switch (I) has 3 positions :-
FWD = Clockwise rotation as viewed from above.
N = Neutral or Off.
REV = Anti– Clockwise rotation as viewed from above.
When switching from FWD to REV or REV to FWD always
stop the motor first then change the direction before
re-starting the motor.
Failure to follow the above procedure could result in damage
to the motor or switchgear.
OPERATION - SPINDLE - TORQUE BOOST
The PB70 has electronic torque boost, this can improve
the motors ability to maintain its set speed when the speed
is low.
Torque can also be reduced if necessary to avoid
breakages when tapping holes.
Torque is adjusted by the torque control knob (L), torque
can be boosted from minimum to 2.8 times the rated
torque. Nominal torque is 79 / 26Nm.
L
H
I
To Next Page
