Norton DR520, Руководство пользователя

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II OPERATION
A. Core Drill Positions
To position the core drill:
1. Roll the drill so that the spindle is positioned over the desired drilling location.
2. Using the leveling screws located on the four corners of the base, level the core drill to
insure that the bit will drill a straight, vertical hole.
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CEILING BRACING
- can be used when the ceiling above the work area is strong
enough to provide solid bracing. A length of pipe may be used with the adjustable brace
on the top of the drill column to firmly secure the drill against the work piece.
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ANCHOR BOLTING
- is a method used quite often in both horizontal and vertical drilling.
The anchor is secured in the work surface and the core drill is placed over the anchor bolt
so that the bolt goes through the hole in the center of the drill base. A nut and washer is
the used to pull the base down as the nut is screwed onto the anchor bolt.
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VACUUM HOLD DOWN
- requires that the surface of the intended drilling area be
smooth or of an even texture in order to achieve an effective bond to the drilling surface.
A large hold down base and vacuum pump are used to fasten the drill to the work
surface. Both the pump and large base are available as optional accessories for the
drills.
B. Drilling Technique
The performance of any diamond core bit
depends heavily on the use of proper drilling
technique. Although drilling conditions and
materials may vary, following specific guide
lines insures faster drilling speeds and
longer bit life.
1. Secure the core drill to the work surface
so that there is no movement in the drill
that would cause the core bit to bind in
the hole.
2. Insure that the hole is constantly flushed
of abrasive fines by supplying a sufficient flow of water.
3. Slowly lower the bit into the hole so that there is no skidding or lateral movement of the
drill. The entire circumference of the core bit should penetrate the drilling surface
before additional pressure is applied to the handle.
4. Exert steady downward pressure while drilling. NEVER force the bit into the material!
5. Do not stop the flow of water or rotation of the bit while the core bit is drilling.
6. Check the core bit if the drilling rate decreases noticeably. The slowing penetration
rate generally indicates that the bit is in need of reconditioning.
Vacuum Pump Attachment
PART NUMBER: 407000
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