Distar DDR Operation Manual page 18

The service life of the drill may depend on the level of abrasiveness of the material
being processed. The more abrasive the material, the smaller the service life of the drill.
After completion of the hole (or if the drill core break inside the drill shell), carefully
remove the drill core with the using of a rod through the axial or lateral openings.
To avoid damage during transportation of DDR, DDS drills L=50-80 mm (САМК,
САМС L=50-80 mm) you should remove it and transport separately. You should always
ensure the safety transportation of DDR, DDS drills L=50-80 mm (САМК, САМС L=50-80
mm) and guard against external damages.
CUTTER GRINDING:
When drill cutting capacity is reduced (over-grinding of diamonds cutting edges) di-
amond grits must be sharpened on the working surface of the segments. To do this, you
should make several holes on any abrasive material, such as brickwork.
The frequency of repeat cutter grinding of the diamond layer depends on hardness
and processing level of material.
Very frequent cutter grinding can reduce the drill service life.
GUARANTEE:
The claim for the quality of the purchased diamond tool is accepted based on the
completed damage statement set form and the presence of the advertising product.
Consideration of the claim is executed in the following cases:
a) if the manufacturer's recommendations for the operation of the tool have not been
violated.
b) if the wear and tear of the diamond layer shall not exceed 1/3 of its initial height.
The manufacturer shall not be bound by the performance warranty of the instrument
if the buyer changes the design (modification of landing mounting, using of self-made adapt-
ers (length extension piece), drilling additional holes etc.) by himself.
Diamond drills are produced with a segmented diamond layer on matrix metal.
The diamond layer is fixed to a steel body and contains no harmful substances.
No expiration date. Store at the temperature from -50°С to +50°С and relative humidity
up to 80%.