14
OPERATION
If you are unsure of the proper use or application for this tool consult a supervisor.
The operator must be familiar with the intended work area. Avoid potential hazards and
prohibited work areas such as dangerous terrain, excessive slopes, or unmarked utilities.
Only use accessories that conform to the specifi cations given in this manual.
Do not allow others to enter the discharge area around the tool during operation.
WARNING:
Never operate a tool without the wheel guard in place.
1. Clamp or secure the work and support it on both sides of the cut.
2. Start the hydraulic tool system & move the control valve to the “ON” position.
COLD WEATHER OPERATION
- Run power unit at low speed to preheat the hydraulic fl uid.
The oil should be at or above 50
O
(10
O
C) with a viscosity of 400 SSU (82 cs) before operation
.
WARNING: Know the location of buried or covered services BEFORE starting the work.
Operate the tool in well ventilated areas ONLY.
Do not operate the tool near flammable materials. Do not cut or grind on vessels containing
combustible substances. Sparks can ignite flammable or combustible substances.
3. Grip the tool with both hands during startup and operation and be sure you have full
balance before starting grinder rotation.
NOTE:
Always keep your body away from the “plane of rotation” of the grinding wheel.
4. Always start the grinder with the disc/wheel away from the work surface.
Press the safety switch into the handle and slowly squeeze the trigger.
Start hydraulic flow low and slowly increase to a level that produces efficient operation,
but allows the operator to maintain full balance and control.
NOTE:
Run the tool at operating speed for at least one minute at the beginning of each shift,
or after a new disc/wheel is installed. Never exceed the max. speed marked on the disc.
4. With the disc rotating, start the operation. Holding the tool securely move the tool gently
into the work with consistent pressure. Do not bump the tool into the workpiece.
Never cock, jam or wedge the disc during the operation.
5. Allowing the disc to do the work without slowing the rotation speed.
Forcing the operation may increase operator fatique.
Pinching due to heat expansion may cause disc breakage.
(Refer to INSTALLING & REMOVING GRINDING WHEEL on page 15)
NOTE:
If a wheel breaks while operating the tool, investigate the cause of the failure
before continuing the operation.
NOTE:
Inspect the guard and collars for damage after any disc breakage on tool.
6. Release the Trigger and the Safety Latch and allow tool to stop.
WARNING:
Never carry the tool or put it down while the disc is still moving.
7. Move the hydraulic system control valve to the “OFF” position and shut down system.
CAUTION:
Work piece may be HOT and/or sharp. Use your personal protection equipment.
8.
Disconnect the hydraulic hoses from the tool.
First the INPUT (Supply), then the Output (Return) hose.
9. Place dust plugs or caps on hose ends, couplers and/or tool ports as needed.
10. Remove the disc after use.
