OPERATION
3.Check that the locking mechanism operates prop- erly to hold the guard in a set position.
WHEEL CONDITION
1.Before installing abrasive wheels, “sound” the wheel for possible damage by hanging the wheel vertically by the arbor hole and rapping lightly with a screw- driver handle or similar instrument. Thin, organic bond wheels will produce a low drumming tone if it is physically sound. If the wheel produces a “dead” or “flat” sound, it may be cracked. Cracked or dam- aged wheels must never be used.
2.Check that the surfaces of the wheel that come in contact with blotters and flanges are free of dirt and other foreign particles.
3.Check that the correct wheel is used for the job.
4.Check that the wheel conforms to the physical re- quirements listed in the Specification section of this manual. The cutoff wheel shall fit freely on the drive flange and remain free under all cutting conditions.
A controlled clearance between the arbor hole and the cutoff saw drive flange is essential to avoid ex- cessive pressure from installation and/or arbor ex- pansion.
5.Check diamond wheels to ensure all segments are intact.
ARBOR AND COLLARS
1.Inspect the drive flange and outer flange prior to in- stallation. Check for burrs. Check that the bearing surfaces are flat and run true when mounted on the drive shaft.
2.Inspect the drive shaft threads.
REDUCING BUSHINGS
1.When a reducing bushing is used in the cutoff wheel mounting hole, check that it does not exceed the thickness of the wheel.
2.Make sure that the reducing bushing does not pro- trude beyond the surface of the wheel on both sides. Bushings that are too thick will not allow the collars to fit properly against the wheel.
3.Check that reducing bushings are tight in the cutoff wheel mounting hole. Never use bushings that do not fit tightly in the mounting hole. Never use shim stock.
DRIVESHAFT SPEED CHECK
The speed of the motor output shaft should be checked at least every 100 hours of operation by trained and experienced personnel. A record of the speed checks should be maintained. The maximum rated speed of the
cutoff saw is 3600 rpm. This speed must be equal to or less than the rated speed of the cutting wheel.
Tests should be conducted while operating the normal hydraulic power supply used with the cutoff saw.
NOTE:
Excessive speed may be caused by excessive oil flow to the tool.
OPERATING INSTRUCTIONS
CUTOFF WHEEL INSTALLATION
IMPORTANT
Make sure the wheel has been thoroughly inspected
prior to installation.
NOTE:
When mounting the wheel, use blotters at the col- lars. The blotters should be made from highly com- pressible material and should not be more than
1.Install the wheel on the drive flange. Refer to the Specification and Parts List sections of this manual for wheel requirements and parts orientation, re- spectively.
2.Install the outer flange. (Use the Spirol drive pin on diamond wheels only.)
3.Install and tighten the wheel nut. Tighten the nut only tight enough to prevent slippage of the wheel.
4.Adjust the sole plate assembly for proper depth of cut.
CONNECTING HOSES
1.Wipe all hose couplers with a clean
2.Connect the hoses from the power supply to the tool hoses. It is a good practice to connect return hoses first and disconnect last to minimize or avoid trapped pressure within the tool.
3.If hose couplers are used, observe the arrow on the coupler to ensure that the flow is in the proper direc- tion. The female coupler on the tool hose is the inlet coupler.
4.Move the hydraulic circuit control valve to the “ON” position to operate the tool.
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