Connection To The Power Supply; Starting Operation - Bosch HWS 0 602 301 4 Serie Manual Original

OBJ_BUCH-2487-002.book Page 33 Wednesday, November 2, 2016 4:43 PM
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.

Connection to the Power Supply

For operation of the power tools, a frequency converter is re-
quired that generates three-phase current with a frequency
according to that listed on the type plate.
Frequency converters are available in various sizes, with dif-
ferent frequencies, secondary voltages and rated outputs.
The choice of the frequency converter depends on the power
tools to be connected. When selecting a frequency converter,
contact your Bosch-specialist shop for advice.
The machine is provided with a four meter long specialty ca-
ble without plug. To put it into operation, the specialty cable
must be equipped with a four-pole CEE plug (identification
colour green).
Additionally, the machine can be equipped with a commer-
cially available motor protection switch for protection against
overload. The adjustment range of the motor protection
switch must cover the nominal current of the power tool (see
"Technical Data"). The motor protection switch must react in
less than one second.
Please observe the safety warnings and assembly instruc-
tions in the operating instructions of the motor protection
switch!
Mounting the CEE Plug (see figures I1 – I2)
– Loosen the two screws 22 and pull the plug insert 21 out of
the plug housing of the CEE plug 24.
– Cut off the plastic sleeve 25 according to the diameter of
the specialty cable of the power tool and insert the special-
ty cable through the CEE plug housing.
– Insert the four conductors through the cable strain relief
20.
– Loosen the four small screws 23 in the plug insert 21 and
insert
the conductor ferrule of the brown L1 conductor into con-
tact tube L1,
the conductor ferrule of the blue L2 conductor into contact
tube L2,
the conductor ferrule of the black L3 conductor into con-
tact tube L3,
and the conductor ferrule of the green/yellow conductor
into the earthing contact tube
– Firmly tighten the four small screws 23 in the plug insert
21 to affix the conductors.
– Now, tighten the screws of the cable strain relief 20 so that
the cable clamp goes around the complete cable sheath,
ensuring that no pressure is on the conductor ferrules.
Bosch Power Tools
– Reinsert plug insert 21 into the housing of the CEE plug 24
and tighten both screws 22 again.
– Afterwards, check the proper function of the protective
conductor.
– Insert the CEE plug 24 of the power tool into the connec-
tion socket of the frequency converter.
Now, connect the frequency converter to the power supply.
For information on how to connect the frequency converter to
the power supply, see the frequency converter operating in-
structions.
 Afterwards, check the rotation direction!
Checking the Rotation Direction
The rotation direction of the grinder spindle must correspond
with the arrow on the power tool.
If the grinder spindle rotates in the wrong direction when put-
ting into operation for the first time (see "Switching the Power
Tool On/Off", page 34), switch the power tool off immediate-
ly and disconnect it from the power supply.
– Loosen the two screws 22 again and pull the plug insert 21
out of the plug housing of the CEE plug 24.
– Loosen the conductor ferrules of the black and brown con-
ductors from their contact tubes.
– Now, insert the conductor ferrule of the black conductor
L3 into contact tube L1, and the conductor ferrule of the
brown conductor L1 into contact tube L3.
– Firmly tighten the small screws 23 in the plug insert 21 to
affix the conductors.
– Reinsert plug insert 21 into the housing of the CEE plug 24
and tighten both screws 22 again.
– Afterwards, check the proper function of the protective
conductor.
– Reconnect the power tool to the power supply.
Operation

Starting Operation

 The voltage and frequency of the power source must
correspond with the data on the type plate of the power
tool.
 Check grinding tools before using. The grinding tool
must be mounted properly and be able to move freely.
Carry out a test run for at least one minute with no load.
Do not use damaged, out-of-centre or vibrating grind-
ing tools. Damaged grinding tools can burst and cause in-
juries.
 If the machine should unexpectedly stop operating
even though the On/Off switch 1 is in the "On" position,
set the On/Off switch to "Off". This will prevent uncon-
trolled restarting of the machine. Before restarting the ma-
chine, check the power supply (see "Connection to the
Power Supply", page 33).
.
 Always connect the power tool to the frequency con-
verter first, before connecting the frequency convert-
er to the mains supply.
To save energy, only switch the power tool on when using it.
English | 33
1 609 92A 36G | (2.11.16)