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Return Spring Adjustment; Cross Laser Adjustment; Led Work Light Adjustment; Maintenance And Inspection - Promac JD-3285-M Operating Instructions Manual

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Fig 13
Loosen the hex cap bolt (C) to tilt the
table.
Caution:
Only loosen the hex cap bolt slightly,
otherwise the table assembly will
separate from the column and fall.
Tighten the hex cap bolt.

7.5 Return Spring Adjustment

Disconnect the machine from the
power source (unplug).
The return spring is adjusted at the
factory and should not need further
adjustment. If adjustment is necessary:
Unplug the machine from the power
source.
Loosen two lock nuts (A, Fig 14)
approximately 6mm.
Fig 14
Firmly hold the coil spring cover (B).
Pull out the cover and rotate until the
pin (C) on the return spring plate
engages the next notch in the coil
spring cover. Turn the cover clockwise
to decrease tension and counter-
clockwise to increase tension.
Tighten two lock nuts (A). Do not over-
tighten. Nuts should not contact the
housing when tight.

7.6 Cross Laser Adjustment

The lasers are designed for use with
twist drill bits.
There will be shadowing with wider
tools, such as Forstner bits, therefore
use will be limited.
The two laser beams need to meet at
the drill centre (Fig 15).
Fig 15
The Laser Assembly has been
installed and pre-set at the factory.
To adjust, install a small drill bit and
rotate lasers (A, Fig 16) gently with a
set of pliers.
Loosen Screw (C) for adjustment.
ATTENTION:
Class 2 Laser
Do not stare into beam of laser
Do not view directly with optical
instruments
Do not point the laser beam at people
or animals.
Do not use the laser beam on highly
reflective materials. Reflected laser
light is dangerous.
A defective laser beamer may be
replaced only, not repaired.
Fig 16
8

7.7 LED Work Light Adjustment

The integrated LED work light is
adjustable.
Push on the rim of the light to adjust
(B, Fig 16).

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.
Lubrication:
Periodically lubricate the gear and the
rack, the table elevation mechanism,
the drive splines (grooves) in the
spindle, and the teeth of the quill
gently with grease.
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.
*Motor pulley loose-
Tighten set screw.
*dull drill bit-
resharpen drill bit.
Drill bit burns
*incorrect speed-
reduce speed.
*Chips clogged-
retract drill bit frequently
*dull drill bit-
resharpen drill bit.

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Jd-3285-t