Hilti DD AF-CA L, Original Operating Instructions, Page: 22 / 36

16 English 2289378
*2289378*
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Remove the hand wheel when you are going to operate the drilling system with the auto-feed unit.
When the auto-feed unit is operating in automatic mode, the hand wheel tends to turn and can lead to
injuries or cause cables or hoses to become wrapped around it.
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Make sure that the power tool is correctly and securely mounted on the drill stand. The auto-feed
unit has to be engaged at one of the keyed positions and it must be secured with the securing screw.
Additional safety instructions
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Make sure that the supply cord cannot be damaged as the carriage advances.
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On account of the drilling system's dead weight, as soon as the carriage lock is disengaged the
drilling system can glide down the drill stand without any braking effect by the installed auto-feed
unit. Be prepared for this and hold the drilling system in place with one hand.
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If the drill stand has not been fastened correctly, always move the drilling system with installed
core bit all the way down in order to prevent the stand from falling over.
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Keep the supply cord, extension cord and water hoses away from rotating parts.
3 Description
3.1 Components and controls 1
@
EMERGENCY STOP switch
;
Carrying handle
=
Holder for supply cord
%
Supply cord
&
Mounting interface with square shaft
(
Rating plate
)
Cooling water adapter
(to the diamond core drilling machine)
+
Cooling water connection
(to the water supply)
§
Securing screw
3.2 Intended use
The DD AF-CA L auto-feed unit, a type DD 150-U diamond core drilling machine and a type DD-ST 150-U
CTL drill stand together form a diamond core drilling system suitable for wet core drilling in mineral materials.
The auto-feed unit is operated via the display of the diamond core drilling machine.
• In operation, the auto-feed unit must be mounted on the drill stand.
• For operation with the auto-feed unit, the drilling system must be secured exclusively by anchors. The
use of a vacuum pump is not permissible.
• The auto-feed unit has to be removed to permit manual drilling with control by the hand wheel.
The product, accessories and tools can present hazards if used incorrectly by untrained personnel or if used
not in accordance with the intended use.
→ For safe operation of the auto-feed unit, also study and follow all instructions relating to safety and
operation in the operating instructions of the system products (diamond core drilling machine, drill
stand)!