Jet JDP-20EVS, Operating Instructions And Parts Manual

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NOTE: The Electronic Variable Speed unit is
designed to shut down, to prevent harm to the
system, in the event of overloading the spindle.
Make sure the Speed Control Knob and the High-
Low Handle are in the matching ranges for the
work being done. Drilling large holes requires the
High-Low Handle to be in ‘Low’ mode and the
Speed Control Knob to be selecting a speed that is
high enough to power the large bit.
Adjusting the Depth Stop for Drilling
Place the drill/tap switch (7, Fig. 10) in the drill
mode. Adjust the zero reading on the scale as
follows:
1. Lower the quill to the bottom of its stroke by
turning the handle (A, Fig. 10) counter-
clockwise until it stops, and hold in that
position.
2. To set the zero, loosen lock knob (B, Fig. 10).
Turn the knurled knob (C, Fig. 10) until the
pointer reads zero.
3. To set the depth stop, turn the knurled knob
(C, Fig. 10) to the desired setting. Tighten
lock knob (B, Fig. 10). The quill will now
advance to this setting.
Adjusting the Depth Stop for Tapping
Place the drill/tap switch in the tap mode. To adjust
the depth stop for tapping, follow the instructions
for adjusting the depth stop for drilling. The major
differences in the tap mode are two micro-
switches.
1. Advance the quill, releasing the upper limit
switch for tapping.
2. The spindle will reverse directions upon
triggering the lower limit switch.
Spindle Preparation
Thoroughly clean the inside of the spindle with a
soft dry cloth. Also clean any taper or arbor to be
used in the spindle. If these are not kept clean, the
taper or arbor will not “seat” properly in the spindle
and may drop out unexpectedly.
Figure 9
Figure 10