Barranca Diamond HP14 Slab Saw - Manual (Page 16)

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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 over-
heating 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 and
add grease through the fittings (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.
Photo 18
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 motor overheats it will automatically shut off and restart itself
once its internal components cool down and the red restart button is
pushed (Photo 19).
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.
HP14 MAINTENANCE