Trouble Shooting Information

Diagnoses and Solutions

Common problems and solutions are listed below to diagnose and identify problems.

Overheated Blade

CAUSE: Adequate coolant was not provided.
REMEDY: Check water supply for adequate volume and for obstructions through water system. Use dry-cutting blades ONLY for shallow cutting (1”-2”) or step cutting. Allow the blade to spin freely every l0 - 15 seconds to increase cooling air flow.

Segment Loss

CAUSE: The material slips during cutting which twists or jams the segments loose.
REMEDY: Hold the material securely while cutting.
CAUSE: Blade is too hard for the material being cut, causing excessive dullness, which in turn causes the segments to pound off or fatigue.
REMEDY: Use a softer blade specification.
CAUSE: Worn blade flanges fail to protect the core from deflecting, improper support.
REMEDY: Replace both blade flanges.
CAUSE: Out-of-round blade rotation resulting in pounding, caused by worn arbor or bad bearings.
REMEDY: Replace worn arbor shaft and/or bearings.
CAUSE: Overheating, usually detected by a bluish color on the steel core.
REMEDY: Check water system on wet-cutting saws. For dry-cutting make shallower cuts and allow the blade to air-cool properly, free of pressure or excessive dulling condition.
REMEDY: Replace worn bearings or arbor shaft as needed.

Eccentricity

CAUSE: the bond is too hard for the material being cut. This hardness causes the blade to dull. The dull blade then begins to “pound”, causing the blade to wear out-of-round.
REMEDY: Change to a softer bond which will wear more readily, allowing the dull diamond to be released and the blade to become sharp.
CAUSE: The saw blade shaft may have a groove scored in it, caused by a blade spinning in-between the flanges. A new blade, installed on the arbor shaft will seat in the groove and immediately run eccentrically saw starts.
REMEDY: Replace worn shaft.
CAUSE: If the blade shaft bearings are worn, the shaft and mandrel will run eccentrically, causing the blade to wear out-of-round. This happens most often with concrete saws when proper lubrication of the bearings is neglected.
REMEDY: Install new blade shaft bearings. In some cases it might also be necessary to replace the blade shaft if it is worn or out of alignment.

Arbor Hole Out-of-Round

CAUSE: Saw arbor badly worn due to improperly seated blade.
REMEDY: Be certain the blade is properly seated on the arbor before tightening the flange.
CAUSE: Blade flanges are not properly tightened, permitting blade to rotate on the shaft.
REMEDY: Always wrench tighten arbor nut. Never hand tighten. Always use hex nuts, never use wing nuts.
CAUSE: Blade flanges are worn and not providing support.
REMEDY: Check flanges for wear, replace worn flanges. will crack.
REMEDY: The saw operator should use steady, even in-feed pressure, and be careful not to twist or jam the blade in the cut.
CAUSE: Overheating through inadequate water supply or improper use of dry-cutting blade.
REMEDY: Use adequate water to cool wet-cutting diamond blades. Allow adequate airflow around dry-cutting blades to prevent overheating.
NEVER USE A BLADE WITH A CRACKED CORE! ! !

Cracked Segments

CAUSE: Blade is too hard for material being cut.
REMEDY: Use correct blade with softer bond. Uneven Segment Wear
CAUSE: Segments are worn on one side, reducing side clearance. It’s usually caused by misalignment of the saw or uneven water flow on both sides of the blade.
REMEDY: Check saw alignment. Clean the water system, making certain that water is applied evenly to the leading edge of the blade. Check pump for supply of sufficient water.
CAUSE: Blade is worn out-of-round due to bad bearings, worn arbor.

Excessive Wear

CAUSE: Using the wrong blade on abrasive material.
REMEDY: Consult the dealer or manufacturer for the proper blade specifications for material being cut.
CAUSE: Lack of sufficient coolant to the blade. Often detected by excessive wear in the center of the segment. (NOTE: In both cases, diamonds will be highly exposed.)
REMEDY: Clean the water system, checking the pump works correctly.
CAUSE: Wearing out-of-round accelerates wear. Usually caused by bad bearings, worn shaft or using a blade too hard for material.
REMEDY: Check bearings and arbor. If worn, replace with new parts before operating.
CAUSE: Insufficient power caused by loose V-belts, inadequate voltage or improper RPM’s.
REMEDY: Tighten belts (taut). Replace worn belts. Check voltage. Use proper size extension cord.

Cracked Core

CAUSE: Blade too hard for material being cut.
REMEDY: Use correct blade with softer bond.
CAUSE: Excessive cutting pressure, or jamming or twisting the blade in the cut can cause the blade core to bend or flex. When subjected to extreme stress and metal fatigue, the blade’s steel core.

Blade Won’t Cut

CAUSE: Blade is too hard for material being cut.
REMEDY: Consult dealer or factory for proper blade to cut materials on the job.
CAUSE: Insufficient power to permit blade to cut properly (loose vbelts, low voltage, horsepower).
REMEDY: Check belts, voltage, and horsepower.
CAUSE: Blade has become dull because of continuous use on fairly hard or vitrified material.
REMEDY: Dress with abrasive material until diamonds are exposed again. (This may be needed occasionally, if it is often occurring blade is probably too hard.)