BD HP14 Owner's Manual And Operating Instructions page 16

HP14
If the threads on both the stainless steel screw feed rod and bronze clutch block become worn or "flattened"
the clutch block will not securely engage with the screw rod and it may disengage while sawing and operat-
ing the automatic power feed and vise. A replacement bronze clutch can be obtained from Barranca Diamond
customer service at (800)-630-7682. The rock vise assembly has cross feed threads attached to an indexing or
crank handle to horizontally adjust the vise so that slab thickness is accurately controlled to a desired thickness
before each slab is cut. The cross feed threaded rod should be periodically cleaned with a solvent and tooth-
brush and lubricated with wheel bearing or lithium grease to allow for ease of rotation of the cross feed crank
handle.
Should the wooden jaws on the vise become worn, replacement jaws can be made from 3/4 inch plywood or
3/8 inch thick peg board material.
BLADE ARBOR ASSEMBLY AND PULLEY
The HP14 Slab Saw is equipped with a 1 inch diameter arbor shaft with 3-1/2"
OD x 1 inch bore steel flanges. Should the blade shaft arbor bearings wear
out, they will cause poor sawing performance and overheating of the shaft.
Periodically, check the tightness flanged bearing housing mounting bolts to
make sure they are securely tightened to the main saw tank wall. Periodically
the blade arbor bearings should be lubricated with a good quality wheel bear-
ing grease dispensed through a zerk fitting grease gun. Do not over lubricate
the bearings while dispensing grease else the bearing seals can be dam-
aged. One or two pumps with a grease gun is sufficient. (Photo 18).
Should the 6 inch OD pulley on the blade arbor (3/4" bore) or motor shaft
(3-1/2" x 5/8") need to be removed or replaced, loosen the set screw on the
hub of each pulley with a US standard allen wrench to remove the pulley
from the shaft. In some cases, a pulley puller tool may be required to press
off the pulley from the blade or motor shaft.
ELECTRIC MAIN MOTOR MAINTENANCE
The HP14 Slab Saw is equipped with a Baldor 1/2 or 3/4 HP 1725 RPM
single phase 120 volt 60 Hz 9.6 amp motor. The motor shaft has sealed ball
bearings and requires no lubrication. The motor is protected from thermal
damage due to overheating with an automatic shut off switch. Once the mo-
tor overheats it will automatically shut off and restart itself once its internal
components cool down and the red restart button is pushed (Photo 19).
DIAMOND BLADE MAINTENANCE
Periodically, the diamond blade on the HP14 Slab Saw will need to be resharpened, should slow or poor saw-
ing performance occur. Dull or "glazed over" diamond cutting segment or kerf will either not cut thus stalling
the saw, or overheat and shut off the motor.
A dull blade can possibly permanently damage the blade or "dish" the core beyond repair. Once the saw
begins to labor or struggle to cut gemstones, the user is advised to obtain a sharpening stick, green or white
silicon carbide block material (60 to 100 grit size) and resharpen the blade.
Resharpening can be performed either with the automatic power feed (stick secured in vise) or manually with
power feed disengaged and a few slabs cut from a sharpening stick. If no sharpening stick is available use an
abrasive material such as cinder block or brick to remove the glazing over the diamonds on the edge of the
cutting kerf part of the blade.
Eventually all diamond blades wear out and must be replaced with a new blade.
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MAINTENANCE
Photo 18
Photo 19