Barranca Diamond BD7CW Trim Saw - Manual (Page 17)

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BD7CW MAINTENANCE
The motor shaft has sealed ball bearings and requires no lubrication.
The motor should be protected from spray when cutting without plastic hood in place.
The motor is protected from thermal damage (overheating) with an automatic shut-off switch. If this
should occur, shut off the main motor by placing the power switch to the OFF position and disconnect-
ing the power source. Allow the motor to cool (2 to 3 hours) and then restart the unit by turning the
switch to ON.
Motor
WARNING If the saw motor should stop during operation, the power to the main motor must
be shut off by moving the power switch in the OFF position. The motor will restart
automatically once cooled down.
If the motor does not restart after a cool down period, contact Barranca Diamond
Service at 800.474.5594.
Periodically, the diamond blade will need to be resharpened, should slow or poor sawing performance
occur. Dull or “glazed over” diamonds will either not cut thus stalling the saw and shutting off the
motor, or the rock vise and rock material will ride up the blade and possibly damage the blade or “dish”
the core. Once the saw begins to labor or struggle to cut gemstones, the user is advised to use a
sharpening stick and resharpen the blade. Resharpening can be performed with a few slabs cut from
the sharpening stick. If no sharpening stick is available, the user could use an abrasive material such
as cinder block or brick to remove the glazing over the diamonds on the rim of the blade.
Diamond Blade
Eventually all blades wear out and must be replaced with a new blade. New blades should be mount-
ed on the blade arbor so that the arrow marked on the steel core is pointing in the direction of the
blade rotation while in use.
• If the arrow can't be found, use a hand lens or magnifying glass to inspect the rim and see
the head and tail of any individual diamond.
• To correctly mount the blade, the head of the diamond must cut first into the rock with the
tail trailing behind.
• For notched rim diamond blades it does not matter which way the blade is orientated on the
arbor shaft.