Switching On And Off - Bosch PWS 550 Operating Instructions Manual

2 609 000 850.book Seite 6 Montag, 23. Januar 2006 9:16 09
Quick Clamping Nut
(for M 14 grinder spindle)
Instead of the clamping nut 10, the quick-clamp-
ing nut 11 (accessory) can be used. Grinding
tools can then be mounted without using tools.
The quick-clamping nut 11 may be used only
for grinding and cutting discs.
Use only a flawless, undamaged quick-clamp-
ing nut 11.
When screwing on, take care that the side
with printing does not point to the grinding
disc. The arrow must point to the index
mark 20.
20
11
3
3
Approved Grinding Tools
All grinding tools mentioned in these operating in-
structions can be used.
The permissible speed [rpm] or the circumferen-
tial speed [m/s] of the grinding tools used must at
least match the values given in the table.
17 • 2 609 000 850 • 06.01
Therefore, always observe the permissible
rotational/circumferential speed on the label
of the grinding tool.
Lock the grinder
spindle with the spin-
dle lock button 3.
Tighten the quick-
clamping nut by
forcefully turning the
Observe correct mains voltage: The voltage of
grinding disc in the
the power source must agree with the voltage
clockwise direction.
specified on the nameplate of the machine.
Equipment marked with 230 V can also be con-
nected to 220 V.

Switching On and Off

A properly tightened
undamaged, quick-
To start the machine, press the On/Off switch 1
clamping nut can be
forward.
loosened by hand
To lock-on, press the On/Off switch 1 down at
turning the knurled
the front until it engages.
ring by hand in an an-
To switch off the machine, release the On/Off
ticlockwise direction.
switch 1 or, when the switch is locked, briefly
Never loosen a tight
press down the On/Off switch 1 at the rear.
quick-clamping nut
with pliers but use a
two-pin spanner. In-
sert the two-pin
spanner as shown in
the illustration.
Constant Electronic Control
(PWS 8-125 CE/PWS 9-125 CE)
Constant electronic control holds the speed con-
stant at no-load and under load, and ensures uni-
form working performance.
Overload Protection
(PWS 8-125 CE/PWS 9-125 CE)
When overloaded, the motor comes to a stop.
Relieve the load on the machine immediately and
allow to cool for approx. 30 seconds at the high-
est no-load speed.
English - 6
max.
[mm] [mm]
D b
100 6 16.0
d
115 6 22.2
D
125 6 22.2
b
100 –
D
115 –
125 –
d
70 30 M 10
b
75 30 M 14
D
Starting Operation
Test run!
Check the grinding tool before use. The
grinding tool must be properly mounted
and rotate freely. Perform a test run of at
least 30 seconds without load. Do not use
damaged, out-of-round or vibrating grind-
ing tools.
d [rpm] [m/s]
11 000 80
11 000 80
11 000 80
– 11 000 80
– 11 000 80
– 11 000 80
11 000 45
11 000 45