Porter-Cable PC1800AG Instruction Manual page 16

• Figure M - If the wheel you are installing is more than 1/8
inch (3mm) thick, place the threaded clamp nut on the spindle
so that the raised section (pilot) fits into the center of the wheel.
• Figure N - If the wheel you are installing is 1/8 inch (3mm)
thick or less, place the threaded clamp nut on the spindle so
that the raised section (pilot) is not against the wheel.
4. While depressing the spindle lock button (3), tighten the
threaded clamp nut with included wrench.
5. To remove the wheel, depress the spindle lock button and
loosen the threaded clamp nut with included wrench.
NOTE: If the wheel spins after the threaded clamp nut is tightened, check the orientation
of the threaded clamp nut. If a thin wheel is installed with the pilot on the clamp nut against
the wheel, it will spin because the height of the pilot prevents the clamp nut from holding
the wheel.
SURFACE GRINDING WITH GRINDING WHEELS
1. Allow the tool to reach full speed before touching the tool to the work surface.
2. Apply minimum pressure to the work surface, allowing the tool to operate at high
speed. Grinding rate is greatest when the tool operates at high speed.
3. Figure O - Maintain a 20˚ to 30˚ angle between the tool and work
surface.
4. Continuously move the tool in a forward and back motion to avoid
creating gouges in the work surface.
5. Remove the tool from work surface before turning tool off. Allow
the tool to stop rotating before laying it down.
EDGE GRINDING WITH GRINDING WHEELS
:
Wheels used for cutting and edge grinding may break or kick back if
they bend or twist while the tool is being used to do cut-off work or deep grinding. To
reduce the risk of serious injury, limit the use of these wheels with a standard Type 27
guard to shallow cutting and notching (less than 1/2 inch (13mm) in depth). The open
side of the guard must be positioned away from the operator. For deeper cutting with a
Type 1 cut-off wheel, use a closed Type 1 guard. See pages 13 and 14 for more
information.
1. Allow the tool to reach full speed before touching the tool to the work surface.
2. Apply minimum pressure to the work surface, allowing the tool to operate at high
speed. Grinding rate is greatest when the tool operates at high speed.
3. Position yourself so that the open-underside of the wheel is facing away from you.
4. Once a cut is begun and a notch is established in the workpiece, do not change the
angle of the cut. Changing the angle will cause the wheel to bend and may cause
wheel breakage. Edge grinding wheels are not designed to withstand side pressures
caused by bending.
5. Remove the tool from the work surface before turning the tool off. Allow the tool to
stop rotating before laying it down.
Do not use edge grinding/cutting wheels for surface grinding
:
applications because these wheels are not designed for side pressures encountered with
surface grinding. Wheel breakage and injury may result.
SURFACE FINISHING WITH SANDING FLAP DISCS
1. Allow the tool to reach full speed before touching the tool to the work surface.
2. Apply minimum pressure to work surface, allowing the tool to operate at high speed.
Sanding rate is greatest when the tool operates at high speed.
M
N
16
1/4 inch WHEELS
Threaded Clamp Nut
Backing Flange
1/8 inch WHEELS
Threaded Clamp Nut
Backing Flange
O
20˚-30˚