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Voltage Drops
Inrush currents cause short-time voltage drops. Under
unfavourable power supply conditions, other equipment may
be affected. If the system impedance of the power supply is
lower than 0.107 Ω, disturbances are unlikely to occur.
Features (Fig. A)
This tool includes some or all of the following features.
On/off switch
1
Spindle lock
2
Guard
3
Side handle
4
ASSEMBLY
WARNING! Before assembly, make sure that the tool is
switched off and unplugged.
Fitting and Removing the Guard (Fig. B)
The tool is supplied with a guard intended for grinding
purposes only (type C). If the unit is intended to perform cutting
off operations, a guard specific for this operation (type 41)
must be fitted. A suitable guard part numbers N551980 (for
115mm cutting wheel) and N542445 (for 125mm cutting
wheel) are available and can be obtained from BLACK+DECKER
service centres.
• Place the tool on a table, with the spindle
• Release the clamping lock
tool as shown.
• Align the lugs
6
with the notches
• Press the guard down and rotate it counterclockwise to the
required position.
• Fasten the clamping lock
• If required, tighten the screw
clamping force.
Removing
• Release the clamping lock
• Rotate the guard clockwise to align the lugs
the notches
7
.
• Remove the guard from the tool.
WARNING! Never use the tool without the guard.
Fitting the Side Handle (Fig. A)
• Screw the side handle
4
the tool.
WARNING! Always use the side handle.
Fitting and Removing Grinding Discs (Fig. C–E)
Always use the correct type of disc for your application.
Always use discs with the correct diameter and bore size (see
technical data).
Fitting
• Fit the guard as described above.
• Place the inner flange
9
(Fig. C). Make sure that the flange is correctly located on the flat
sides of the spindle.
• Place the disc
10
onto the spindle
the disc has a raised centre
faces the inner flange.
• Make sure that the disc locates correctly on the inner flange.
• Place the outer flange
12
grinding disc, the raised centre on the outer flange must face
8 8
16
facing up.
5
and hold the guard
3
7
.
5
to secure the guard to the tool.
to increase the
8
.
5
6
with
into one of the mounting holes in
onto the spindle
16
as shown
16
as shown (Fig. C). If
11
, make sure that the raised centre
onto the spindle. When fitting a
towards the disc (A in Fig. D). When fitting a cutting disc, the
raised centre on the outer flange must face away from the disc
(B in Fig. D).
• Keep the spindle lock
flange using the two-pin spanner
Removing
• Keep the spindle lock
flange
12
using the two-pin spanner
• Remove the outer flange
Surface Grinding with Grinding Discs (Fig. G)
• Allow the tool to reach full speed before touching the tool to
the work surface.
• 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.
• Maintain a 20˚ to 30˚ angle between the tool and work
surface as shown in Fig. G.
• Continuously move the tool in a forward and back motion to
avoid creating gouges in the work surface.
• Remove the tool from work surface before turning tool off.
Allow the tool to stop rotating before laying it down.
Edge Grinding with Grinding Discs
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
over the
cutoff work or deep grinding. Edge grinding/ cutting with a
Type 27 wheel must be limited to shallow cutting and notching,
less than 13 mm in depth when the wheel is new. Reduce the
depth of cutting/notching equal to the reduction of the wheel
radius as it wears down. Refer to the 'Grinding and cutting
accessory chart' at the end of ths manual for more information.
Edge grinding/cutting with a Type 41 wheel requires usage of a
Type C guard.
• Allow the tool to reach full speed before touching the tool to
the work surface.
• 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.
• Position yourself so that the openunderside of the wheel is
facing away from you.
• 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.
• Remove the tool from the work surface before turning the
tool off. Allow the tool to stop rotating before laying it down.
WARNING! Do not use edge grinding/cutting wheels for
surface grinding applications if the wheel label has forbidden
such use because these wheels are not designed for side pressures
encountered with surface grinding. Wheel breakage and serious
personal injury may result.
Fitting and Removing Sanding Discs (Fig. A, E, F)
For sanding, a backing pad is required. The backing pad is
available from your BLACK+DECKER dealer as an accessory.
Fitting
• Place the inner flange
(Fig F). Make sure that the flange is correctly located on the flat
sides of the spindle.
• Place the backing pad
2
depressed and tighten the outer
13
(Fig. E).
2
depressed and loosen the outer
13
(Fig. E).
12
and the disc
10
.
9
onto the spindle
16
as shown
14
onto the spindle.
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