Starting Operation; Working Advice - Bosch GCO 240 Professional Manual Del Usuario

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OBJ_BUCH-2660-003.book Page 10 Tuesday, July 19, 2016 9:50 AM
10 | English
Operation
Transport Safety (see figure C)
The transport safety-lock 15 enables easier handling of the
machine when transporting to various working locations.
Releasing the Machine (Working Position)
– Push the tool arm by the handle 3 down a little in order to
relieve the transport safety-lock 15.
– Pull the transport safety-lock 15 completely outward.
– Guide the tool arm slowly upward.
Note: When working, pay attention that the transport safety-
lock is not pushed inwards. Otherwise, the tool arm cannot be
lowered to the requested depth.
Securing the Machine (Transport Position)
– Guide the tool arm downward until the transport safety-
lock 15 can be pushed completely inward.
For additional information on transport, see page 11.
Adjusting the Cutting Angle (see figure D)
The mitre angle can be set in a range from 0° to 45°.
Frequently used mitre angles are identified on the angle stop
7 with appropriate markings. The 0° and 45° position are set
at the respective end stop.
– Loosen the locking screws 14 for the angle stop using the
hex key provided 12 (8 mm).
– Adjust the desired angle and firmly tighten both locking
screws 14 again.
Displacing the Angle Stop (see figure D and E)
When cutting workpieces wider than 140 mm, the angle stop
7 can be displaced to the rear.
– Completely unscrew the locking screws 14 using the hex
key provided 12 (8 mm).
– Move the angle stop 7 toward the rear by one or two holes
to the desired clearance.
– Adjust the desired angle and firmly tighten both locking
screws 14 again.
Clamping the Workpiece (see figure E)
To ensure optimum working safety, the workpiece must al-
ways be firmly clamped.
Do not saw workpieces that are too small to clamp.
– Place the workpiece against the angle stop 7.
– Slide the clamping spindle 8 against the workpiece and
firmly clamp the workpiece with the spindle handle 10.
Loosening the Workpiece
– Loosen the spindle handle 10.
– Tilt up the quick release 9 and pull the clamping spindle 8
away from the workpiece.

Starting Operation

Dust from materials such as lead-containing coatings, miner-
als and metal can be harmful to one's health. Contact with or
inhaling the dust can trigger allergic reactions to the operator
or bystanders and/or lead to respiratory infections.
Certain metal dust is considered hazardous, especially in con-
junction with alloys such as zinc, aluminium or chromium. Ma-
1 609 92A 34C | (19.7.16)
terials containing asbestos may only be worked by special-
ists.
– 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 mate-
rials to be worked.
The blade can be blocked by dust, chips or workpiece frag-
ments in the slot of the base plate 13.
– Switch the machine off and pull the mains plug from the
socket outlet.
– Wait until the cutting disc has come to a complete stop.
– Tilt the machine toward the rear, so that small workpiece
fragments can fall out of the opening intended for this pur-
pose.
If required, use a suitable tool to remove all workpiece frag-
ments.
Switching On and Off (see figure F)
– To start the machine, firstly press the lock-off button 1.
Then press the On/Off switch 2 and keep it pressed.
Note: For safety reasons, the On/Off switch 2 cannot be
locked; it must remain pressed during the entire operation.
– To switch off the machine, release the On/Off switch 2.

Working Advice

General Cutting Instructions
 Do not touch the cutting disc after working before it
has cooled. The cutting disc becomes very hot while work-
ing.
 Make sure that the spark guard 19 is properly mount-
ed. Sparking occurs when cutting metal.
Long workpieces must be underlaid or supported at their free
end.
Permissible Workpiece Dimensions
Maximum workpiece sizes:
Workpiece Form
119 x 119
100 x 196
130 x 130
Minimum workpiece sizes (= all workpieces that can be
clamped via the clamping spindle 8): Length 80 mm
Cutting depth, max. (0°/0°): 129 mm
Mitre/Bevel Angle
45°
129 Ø
128 Ø
110 x 110
107 x 115
115 x 115
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