Adjusting The Depth Stop; Changing Spindle Speeds - Jet JDP-378VB Mode D'emploi

7. Setup and adjustments
General note:
Setup and adjustment work may
only be carried out after the
machine is protected against
accidental starting by pulling the
mains plug.
7.1 Removing the Chuck and
Arbour
Unplug the machine from the power
source.
Lower the quill using the down feed
handle.
Rotate the spindle to align the key in
the spindle with the key hole in the
quill.
Insert the drift key into the aligned
slots and tap lightly. Have another
person (or a protected table) catch the
chuck and arbour assembly as it falls
away from the spindle.

7.2 Adjusting the Depth Stop

To drill multiple holes at the same
preset depth, use the depth stop (K,
Fig 7).
With the drill bit in the chuck, lower
the down feed handle to advance the
drill bit to the work piece.
Lock the depth stop to the desired
cutting depth.
Fig 7
The drill bit will now advance only to
this point.

7.3 Changing Spindle Speeds

Unplug the machine from the power
source.
Loosen the locking screw (W, Fig 8)
on the pulley cover, then open the
cover.
Fig 8
Loosen the motor lock knob (U) found
on the rear of the head assembly.
Release the belt with the tension lever
(B).
Change the belt location according the
speed chart and the speed you desire
(Fig 9).
Fig 9
Tension the belt and tighten the motor
lock knob (U, Fig 8).
The belt is properly tensioned when
finger and thumb pressure midway
between the two pulleys causes
approximately 10 mm deflection.
Close and lock the pulley cover with
the locking screw (W, Fig 8).
Use the variable speed select knob (Y)
to set the spindle speed.
The digital readout (X) shows the
spindle speed.
7.4 Table Tilt Adjustment
Disconnect the machine from the
power source (unplug).
Loosen the hex cap bolt (X, Fig 10) to
tilt the table.
Caution:
Only loosen the hex cap bolt slightly,
otherwise the table assembly will
separate from the column and fall.
7
Fig 10
Tighten the hex cap bolt.
8. Maintenance and inspection
General notes:
Maintenance, cleaning and repair
work may only be carried out after
the machine is protected against
accidental starting by pulling the
mains plug.
Periodically lubricate gently with
grease.
-the drive splines (grooves) in the
spindle
-the teeth of the quill
-the column-rack
Clean the machine regularly.
Defective safety devices must be
replaced immediately.
Repair and maintenance work on the
electrical system may only be carried
out by a qualified electrician.
9. Trouble shooting
Motor doesn't start
*No electricity-
check mains and fuse.
*Defective switch, motor or cord-
consult an electrician.
Chuck will not stay on spindle
*Oil or grease on contact surfaces-
clean the tapered surfaces of chuck
and spindle.
Machine vibration
*Incorrect belt tension-
Adjust belt tension.
*Dry spindle quill-
lubricate spindle quill.
*Spindle pulley loose-
tighten retaining nut.