Jet J-1230R, Operating Instructions And Parts Manual

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8.4 Unlocking arm and column
mechanisms
A motorized locking system is used to lock the
head to the arm, the arm to the column, and the
column to the base.
When you push UNLOCK, all of the locks are
unlocked. When you push LOCK, all of the locks
are locked.
The buttons which control the locks are located
on the right-hand side of the drill head
(see
Figure 10). Press and hold the UNLOCK button
until the arrow (Figure 11) points to “B”. Release
the button. The clamping device is now
disengaged. When locking, press and hold the
LOCK button until the arrow points to “A”. The
clamping device is now re-engaged.
Always be certain the locks
are engaged before using the drill press. Pull
on the arm handle and try to rotate the
handwheel at the front of the head, before
starting the spindle. Failure to have all locks
secure may result in damage to tooling,
damage to workpiece, and possible injury to
the operator.
Figure 11
8.5 Raising and lowering radial arm
1. Power to the drill press must be ON – then
release the machine locks by pushing the
UNLOCK button.
2. Raise or lower arm to required height using
the arm/spindle control lever (see Figure
10). See also Section 8.24
Using the control
lever .
3. When the arm is at required height and if no
other adjustments to spindle location are
required, press the LOCK button to secure
all machine locks.
8.6 Moving drill head along arm
1. Power to the drill press must be ON – then
release the machine locks by pushing the
UNLOCK button.
2. Turn handwheel to move the drill head along
the arm. See Figure 10.
3. When drill head is at desired position on the
arm and if no other adjustments to spindle
location are required, push the LOCK button
to secure all machine locks.
NEVER swing the drill press
arm on the support column unless you are
absolutely certain the drill press base is
firmly attached to the shop floor.
If the arm is
moved off its position directly above the base
and the base is not bolted to the floor,
THE
DRILL MAY TIP OVER AND CAUSE SERIOUS
INJURY OR DEATH TO THE DRILL PRESS
OPERATOR,
and will certainly result in damage
to the drill press itself.
8.7 Rotating arm on support column
1. Power to the drill press must be ON – then
release the machine locks by pushing the
UNLOCK push button.
2. Swing the arm using the handle (see Figure
10) to required spindle position.
3. When the spindle is positioned correctly and
no other adjustments are required, push the
LOCK button to secure all machine locks.
8.8 Setting spindle speed
Spindle speeds are established using the gear
change levers on the upper right-hand side of
the drill head (See Figure 10). The shorter of the
two levers operates a two-speed mechanism
which puts the gearbox in either high gear or low
gear. A HI/LOW indicator on the upper left hand
side of the drill head identifies the selected
speed range.
The longer gear change lever operates a three
speed gearbox mechanism. A detent in the
middle of the lever travel indicates when the
lever is in intermediate gear position.
This gearbox set-up gives you a total of six
spindle speeds which may be selected. The two-
speed spindle drive motor, therefore, increases
the number of available speeds to 12. The
speed selected clearly depends on the position
of
both gear change levers and whether the
motor switch on the top front of the drill head is
on LOW or HI speed.