Bosch Professional GDB 350 WE Original Instructions Manual page 17

When restarting a diamond drill in the workpiece
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check that the bit rotates freely before starting. If the
bit is jammed, it may not start, may overload the tool, or
may cause the diamond drill to release from the work-
piece.
When securing the drill stand with anchors and fasten-
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ers to the workpiece, ensure that the anchoring used
is capable of holding and restraining the machine dur-
ing use. If the workpiece is weak or porous, the anchor
may pull out causing the drill stand to release from the
workpiece.
When securing the drill stand with a vacuum pad to
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the workpiece, install the pad on a smooth, clean, non-
porous surface. Do not secure to laminated surfaces
such as tiles and composite coating. If the workpiece is
not smooth, flat or well affixed, the pad may pull away
from the workpiece.
Ensure there is sufficient vacuum before and during
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drilling. If the vacuum is insufficient, the pad may release
from the workpiece.
Never perform drilling with the machine secured by
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the vacuum pad only, except when drilling down-
wards. If the vacuum is lost, the pad will release from the
workpiece.
When drilling through walls or ceilings, ensure to pro-
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tect persons and the work area on the other side. The
bit may extend through the hole or the core may fall out
on the other side.
Do not use this tool for overhead drilling with water
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supply. Water entering the power tool will increase the
risk of electric shock.
Use suitable detectors to determine if utility lines are
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hidden in the work area or call the local utility com-
pany for assistance. Contact with electric lines can lead
to fire and electric shock. Damaging a gas line can lead to
explosion. Penetrating a water line causes property dam-
age or may cause an electric shock.
Wear non-skid shoes. This prevents injuries that can oc-
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cur from slipping on smooth surfaces.
Never operate the power tool without the portable re-
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sidual current device (PRCD) included in delivery.
Before beginning work, check that the portable resid-
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ual current device (PRCD) is functioning properly.
Have any damaged portable residual current devices
(PRCDs) repaired or replaced by a Bosch after-sales ser-
vice agent.
Pay attention that neither persons in the working area
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nor the power tool itself come into contact with the
water that comes out.
Products sold in GB only: Never operate the 110 V ex-
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ecution of the machine without isolation transformer
according to EN/IEC 61558-1 and EN/IEC
61558-2-23. The isolation transformer must have a
grounded earth wire on the secondary winding side.
Bosch Power Tools
Never leave the tool unattended before it has come to
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a complete stop. Cutting tools that are still running can
cause injuries.
Assemble the drill stand properly before mounting the
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drill. The correct assembly is important in order to ensure
proper function.
Ensure that the drill is securely attached to the drill
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stand before using it. Otherwise, the drill may slip in the
drill stand, which can lead to a loss of control.
Secure the drill stand on a stable and even surface. If
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there is a chance that the drill stand will slip or wobble,
the safe and steady operation of the drill cannot be guar-
anteed.
Keep the drill cord away from the work area. Damaged
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or entangled cords increase the risk of electric shock.
Do not overload the drill stand or climb or stand on it.
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Overloading or standing on the drill stand can raise its
centre of gravity, causing it to tip over.
Store idle drill stands out of the reach of children. Do
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not allow persons unfamiliar with the tool or these in-
structions to operate the tool. Tools can be dangerous
in the hands of untrained users.
Before carrying out any work on the drill stand or drill,
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during work breaks and when not using the drill stand,
secure the drill stand against unintentional movement
by tightening the parking brake.
The power tool must only be operated on a mains sup-
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ply with protective conductor and adequate dimen-
sioning.
Always fasten the drill stand while in operation, using
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anchors, vacuum (accessory) or quick-clamping
column to prevent accidental tipping of the drill stand
with inserted diamond drill and core bit.
Ensure that water-carrying hoses, connectors and the
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water collection ring (accessory) are in immaculate
condition. Replace damaged or worn parts before the
next use. Water escaping from parts of the power tool
will increase the risk of electric shock.
Connect the power tool to a mains supply that is prop-
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erly connected to earth. The socket and extension cable
must have a fully functioning protective conductor.
Products sold in GB only:
Your product is fitted with an BS 1363/A approved electric
plug with internal fuse (ASTA approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be
cut off and an appropriate plug fitted in its place by an au-
thorised customer service agent. The replacement plug
should have the same fuse rating as the original plug.
The severed plug must be disposed of to avoid a possible
shock hazard and should never be inserted into a mains
socket elsewhere.
English | 17
1 609 92A 4NK | (21.01.2021)