BM 1609929T61 07-09:BM 1609929T61 07-09 7/8/09 1:37 PM Page 13
Operating Instructions
!WARNING Hold the tool with both hands while starting the tool, since
torque from the motor can cause the tool to twist.
Start the tool before applying to work and let the tool come to full speed before contacting the workpiece. Lift the tool from the work before releasing the switch. DO NOT turn the switch “ON” and “OFF” while the tool is under load; this will greatly decrease the switch life.
"TRI-CONTROL" PADDLE SWITCH
(Models 1974-8 & 1994-6 only) The “Tri-Control” Paddle
Switch enables the operator to control the switch functions of
TO UNLOCK SWITCH AND TURN TOOL "ON": Push paddle lever FORWARD (toward the spindle) then squeeze the paddle lever.
TO SWITCH TOOL "OFF": Release pressure on paddle lever. The switch is spring loaded and will return to "OFF" position automatically.
The
TO LOCK SWITCH "ON": After paddle switch has been activated push paddle lever completely FORWARD and release paddle lever.
TO SWITCH TOOL "OFF": Squeeze and then release paddle lever. The switch is spring loaded and will return to "OFF" position automatically.
PADDLE SWITCH WITH
"LOCK-OFF "FEATURE (Models 1974-8D & 1994-6D only)
The Paddle switch enables the operator to control the switch functions of
TO UNLOCK SWITCH AND TURN TOOL "ON": Push paddle lever FORWARD (toward the spindle) then squeeze the paddle lever.
TO SWITCH TOOL "OFF": Release pressure on paddle lever. The switch is spring loaded and will return to "OFF" position automatically.
SELECTING GRINDING WHEELS Before using a grinding wheel, be certain that its maximum
safe operating speed is not exceeded by the nameplate speed of the grinder. Do not exceed the recom mended wheel diameter.
DISC GRINDING WHEELS
Grinding wheels should be carefully selected in order to use the grinder most efficiently. Wheels vary in type of abrasive, bond, hardness, grit size and structure. The correct type of wheel to use is determined by the job. Use disc grinding wheels for fast grinding of structural steel, heavy weld beads, steel casting, stainless steel and other ferrous metals.
GRINDING TIPS
Efficient grinding is achieved by controlling the pressure and keep ngi the angle between wheel and workpiece at 10° to 15°. If the wheel is flat, the tool is difficult to control. If the angle is too steep, the pressure is concentrated on a small area causing burning to the work surface.
!WARNING Excessive or sudden pres- sure on the wheel will slow
grinding action and put dangerous stresses on the wheel.
When grinding with a new wheel be certain to grind while pulling tool backwards until wheel becomes rounded on its edge. New wheels have sharp corners which tend to “bite” or cut into work piece when pushing forward.
CUTTING METAL
Using the optional Type 1A wheel guard, it is possible to perform limited cutting on small stock such as metal tubes, piping or rebar. When cutting, work with moderate feed, adapted to the material being cut. Do not exert side pressure onto the cutting disc, tilt or oscillate the tool. When cutting profiles and square bar, it is best to start at the smallest cross section.
Always follow precautions for kickback.
Do not apply side pressure to cutting wheel to reduce wheel speed.
The tool should always be used so that sparks are directed away from user.