Operation; Grinding Wheels; Operating Modes - EINHELL RT-AG 115 Original Operating Instructions

Anleitung_RT_AG_115_SPK8a__ 24.01.13 10:13 Seite 28
5.3 TEST RUN FOR NEW GRINDING WHEELS
Allow the right-angle grinder to run in idle for at least
1 minute with the grinding or cutting wheel fitted in
place. Vibrating wheels are to be replaced
immediately.

6. Operation

6.1 Switch (Fig. 4)
The angle grinder comes with a safety switch which is
designed to prevent accidents. To switch on, push
the switch (a) down while at the same time pushing
the ON/OFF switch (2) forwards. To switch off the
angle grinder, depress the ON/OFF switch (2) at the
back. The ON/OFF switch (2) will jump back into its
starting position.
Wait until the machine has reached its top
speed. You can then position the angle grinder
on the workpiece and machine it.
6.2 Changing the grinding wheels (Fig. 5 / 6)
Use the face spanner (5) supplied to change the
grinding wheels. The face spanner (5) is stored in the
additional handle (3). Pull the face spanner (5) out of
the additional handle (3) when you need it.
Important! For safety reasons, the angle grinder
must not be operated with the face spanner (5)
inserted in it.
Pull out the power plug.
Simple wheel change by spindle lock:
n
Press the spindle lock and allow the grinding
n
wheel to latch in place.
Open the flange nut with the face spanner.
n
(Fig. 6)
Change the grinding or cutting wheel and tighten
n
the flange nut with the face spanner.
Important!
Only ever press the spindle lock when the motor
and grinding spindle are at a standstill!
You must keep the spindle lock pressed while
you change the wheel!
For grinding or cutting wheels up to approx. 3 mm
thick, screw on the flange nut with the flat side facing
the grinding or cutting wheel.
6.3 Flange arrangements when using grinding
wheels and cutting wheels (Fig. 7-10)
Flange arrangement when using a depressed-
n
centre or straight grinding wheel (Fig. 8)
a) Clamping flange
b) Flange nut
Flange arrangement when using a depressed-
n
centre cutting wheel (Fig. 9)
28
a) Clamping flange
b) Flange nut
Flange arrangement when using a straight
n
cutting wheel (Fig. 10)
a) Clamping flange
b) Flange nut
6.4 MOTOR
It is vital for the motor to be well ventilated during
operation. Be sure, therefore, to keep the ventilation
holes clean at all times.

6.5 GRINDING WHEELS

Never use a grinding or cutting wheel bigger than
n
the specified diameter.
Before using a grinding or cutting wheel, check
n
its rated speed.
The wheel´s rated speed must be higher than the
n
idle speed of the right-angle grinder.
Use only grinding and cutting wheels that are
n
approved for a minimum speed of 11,000 rpm
and a peripheral speed of 80 m/sec.
Check the direction of rotation when you use
n
diamond cutting wheels. The directional arrow on
the diamond cutting wheel must point in the
direction in which the tool rotates.
Take special care that the grinding/sanding wheels
are properly stored and transported. Ensure that the
grinding/sanding wheels are never exposed to shock,
jolts or sharp edges (for example during transport or
storage in a toolbox). This could cause damage (such
as cracks) to the grinding/sanding wheels and place
the user in serious danger.

6.6 OPERATING MODES

6.6.1 Rough grinding (Fig. 11)
Caution: Use the safety device for
sanding/grinding (included in items supplied).
For the best rough grinding results, hold the grinding
wheel at an angle of between 30° and 40° to the
workpiece surface and guide back and forth over the
workpiece in steady movements.