Silverline Drill Press 250mm - Manual (Page 8)

262212 350W Drill Press
www.silverlinetools.com
7
Speed control
Note: The drill may need adjustment of the Drive Belt Tension Adjuster (10)
before use even if you use the gear already set.
The drill has 5 speeds which are manually set. See chart below showing
belt positions for each speed plus an approximate speed guide for type and
size of drill bit.
1. Disconnect the drill press from its power supply before attempting to
change the speed
2. Remove the single Phillips screw that secures Pulley Cover (4). It is
above the Drive Belt Tension Adjuster (10) and open the pulley cover
3. The speed is adjusted by the belt that connects the Spindle Pulley (8)
and the Motor Pulley (9)
4. To move the belt, loosen the Drive Belt Tension Adjuster (10) and pull
the Motor (2) towards the front of the drill
5. Position the belt onto the desired step on the pulleys according to the
table above or the provided table inside the lid of the pulley cover
Note: Only operate the drill with the belt level. Operating the drill press
with the belt angled will result in serious damage to the tool and will
invalidate the guarantee.
6. Lever the motor away from the front of the drill to tension the belt,
then tighten the drive belt tension adjuster and re-fit the pulley cover
securing screw
Note: Low tension will cause the belt to slip and may cause the drill bit to
lock in the material. Over tensioning will cause excessive wear and noise.
Correct tensioning is tensioning at the first point where the belt can’t slip
in use and will provide maximum life for the belt. As the belt ages and
stretches tension will have to be increased again. Eventually a replacement
belt may be required.
Note: The pulley cover has a safety device which prevents the tool working
if the pulley cover isn’t closed and can be seen inside the cover. If the tool
fails to operate make sure the pulley cover is closed correctly.
Table
The table can be adjusted for height, rotation and tilt. It has 2 slots for
securing a vice (not supplied) to the table surface and a central hole
for allowing a drill bit to pass through the material being drilled without
damaging the surface of the table.
Position Adjustment
• Loosen the Rise and Fall Locking Handle (12)
• Move the table to the height and rotation position for the required hole in
the material being drilled
• Tighten the handle once table position has been confirmed
• To adjust tilt, loosen Table Tilt Bolt (17) with a spanner (not supplied)
and adjust using the Table Tilt Angle Scale (16) to give the approximate
required angle or set the table exactly level using a spirit level. Then
re-tighten the bolt
Note: Ensure that the table is securely held in position prior to use.
Belt Position Speed
(min -1 )
Spiral
drill bit
(metal)
Brad-
point
drill bit
(wood)
Forstner
bit (wood)
8 9 600 11 - 13mm >25mm 35 - 50mm
8 9 900 8 - 10mm 25mm 28 - 32mm
8 9 1250 5 - 7mm 20mm 19 - 25mm
8 9 1750 3 - 4mm 3-15mm 13 - 16mm
8 9 2600 1-2mm <16mm
Drilling Depth
You can adjust the drilling depth by limiting the movement of the chuck/
spindle. Adjust the 2 nuts on the thread parallel to the Drilling Depth Gauge
(5). Set between 0 and 50mm as shown on the gauge. Locking the 2 nuts
together at maximum height will give the full 50mm of travel.
CAUTION
• Applying excess pressure does not result in faster or more efficient
drilling. If the pressure applied to the drill has a noticeable effect on the
speed of the drill then reduce the pressure. Overloading the drill will
reduce its service life
• As the drill bit penetrates the material being drilled, it may 'catch' or
'snag'. This may cause the machine to suddenly 'kick'. To prevent any
possibility of injury always ensure the material is held securely by a vice
or a clamp, and use sharp drill bits.
262212_Z1MANPRO1.indd 7 23/11/2012 16:54