Hilti DD AF-CA H User manual

DD AF-CA H
English 1
Français 15
Español 29
Português 44

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DD AF-CA H
en Originaloperatinginstructions....................................... 1
fr Moded'emploioriginal ........................................... 15
es Manualdeinstruccionesoriginal .................................... 29
pt Manualdeinstruçõesoriginal ...................................... 44

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Original operating instructions
1 Information about the documentation
1.1 About this documentation
• Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free
handling and use of the product.
• Observe the safety instructions and warnings in this documentation and on the product.
• Always keep the operating instructions with the product and make sure that the operating instructions
are with the product when it is given to other persons.
1.2 Explanation of symbols used
1.2.1 Warnings
Warnings alert persons to hazards that occur when handling or using the product. The following signal words
are used:
DANGER
DANGER !
▶Draws attention to imminent danger that will lead to serious personal injury or fatality.
WARNING
WARNING !
▶Draws attention to a potential threat of danger that can lead to serious injury or fatality.
CAUTION
CAUTION !
▶Draws attention to a potentially dangerous situation that could lead to personal injury or damage to the
equipment or other property.
1.2.2 Symbols in the documentation
The following symbols are used in this document:
Read the operating instructions before use.
Instructions for use and other useful information
Dealing with recyclable materials
Do not dispose of electric equipment and batteries as household waste
1.2.3 Symbols in the illustrations
The following symbols are used in illustrations:
These numbers refer to the corresponding illustrations found at the beginning of these operating
instructions
The numbering reflects the sequence of operations shown in the illustrations and may deviate
from the steps described in the text
Item reference numbers are used in the overview illustrations and refer to the numbers used in
the product overview section
This symbol is intended to draw special attention to certain points when handling the product.

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1.3 Product-dependent symbols
1.3.1 Symbols on the product
The following symbols can be used on the product:
Alternating current
Protection class II (double insulated)
The product supports wireless data transfer.
If applied on the product, the product has been certified by this certification body for the US and
Canadian markets according to the applicable standards.
1.4 Product information
products are designed for professional users and only trained, authorized personnel are
permitted to operate, service and maintain the products. This personnel must be specifically informed about
the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by
untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are printed on the rating plate.
▶Write down the serial number in the table below. You will be required to state the product details when
contacting Hilti Service or your local Hilti organization to inquire about the product.
Product information
Auto-feed unit DD AF-CA H
Generation: 01
Serial no.:
2 Safety
2.1 Safe operation of the auto-feed unit
WARNING
Non-compliance with safety instructions of the system products! The auto-feed unit is a system product
that is used only in combination with a diamond core drilling machine and a drill stand.
▶Use the auto-feed unit only with compatible system products listed in the section headed "Intended use".
▶Also study and follow all instructions relating to safety and operation in the corresponding operating
instructions of the system products (diamond core drilling machine, drill stand).
Study all safety instructions and other instructions, images and technical data with which this power
tool is provided. Failure to observe the instructions below or the instructions of the system products can
result in electric shock, fire and/or serious injury.
Keep all safety precautions and instructions for future reference.
The term “power tool” used in the safety precautions refers to your mains-operated (corded) power tool or
battery-operated (cordless) power tool.
General safety instructions
▶When you operate the drilling system with auto-feed unit, always secure the drill stand by means
of anchors. The use of a vacuum pump is not permissible. When the auto-feed unit is operating in
automatic mode, the vacuum base plate can become detached if the vacuum unexpectedly drops below
the specified range.
▶Keep the power tool out of reach of children.
▶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.
▶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
▶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.
▶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.
▶Keep the supply cord, extension cord and water hoses away from rotating parts.
3 Description
3.1 Components and controls 1
@Emergency stop
;Carrying handle
=Holder for supply cord
%Supply cord
&Mounting interface with square shaft
(Rating plate
)Cooling water connection (to the diamond
core drilling machine)
+Cooling water connection to water supply
§Securing screw
3.2 Intended use
The DD AF-CA H auto-feed unit, a type DD 250-CA diamond core drilling machine and a type DD-HD 30
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 the anchor base
plate, not by the vacuum base plate.
• 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)!
3.3 Warning stickers on the product
The following warning stickers are affixed to the product.

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It is not permissible to use a vacuum pump as means of
securing a drilling system with auto-feed unit.
3.4 Bluetooth®
This product has Bluetooth.
Bluetooth is a wireless data transfer system by which the two Bluetooth-enabled products can communicate
with each other over a short distance.
To ensure a stable Bluetooth connection there must be a clear line of sight between the connected devices.
Bluetooth functions of this product
• Service and status messages of the paired Hilti devices are shown on the display.
• Communication with the paired diamond core drilling machine in automatic drilling operation.
Switching Bluetooth on or off
Hilti products ship ex-works with Bluetooth deactivated. Bluetooth switches itself on automatically
during initial operation.
License
The Bluetooth®word mark and the logo are registered trademarks and the property of Bluetooth SIG, Inc.
and Hilti has been granted a license to use these trademarks.
3.5 Display symbols in the multifunction display (when starting)
The following symbols appear on the display of the diamond core drilling machine as soon as the auto-feed
unit is started.
For more information on the pairing procedure see the section headed "Pairing auto-feed unit and
diamond core drilling machine".
Display Explanation
Devices are paired
Appears only when a new pairing connection is established between
auto-feed unit and a diamond core drilling machine.
Press the EMERGENCY STOP switch.
Reset the EMERGENCY STOP switch.
3.6 Display symbols in the multifunction display (normal operating status)
The following symbols can be displayed when the auto-feed unit is paired with the diamond core drilling
machine and the auto-feed unit is in normal operating status.
Other, context-sensitive messages can also be shown on the display. If a message not listed here
appears on the display, consult the "Troubleshooting" section.

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Display Explanation
"Position CUT-ASSIST" mode
"Set up and activate CUT-ASSIST" mode
Set power reduction
→ for jobsites with unstable AC supply
Set water valve
→ for overhead drilling jobs
Set hole-starting modes
→ for drilling at an angle and drilling with core bits of small diameter up
to max. 25 mm
Set break-through detection
→ for drilling into materials with voids
Drilling process in CUT-ASSIST mode: Search for material surface in
progress
Drilling process in CUT-ASSIST mode: Current drilling depth (unit of
measure corresponds to the market)
3.7 Items supplied
Auto-feed unit, operating instructions
Other system products approved for use with this product can be found at your local Hilti Store or at:
www.hilti.group
3.8 EMERGENCY STOP switch
The EMERGENCY STOP switch enables you to stop the drilling operation immediately in emergency
situations. The drilling system remains under electric power after an emergency stop has been triggered.
Operation of the system cannot be resumed until the emergency stop has been canceled.
Before putting the drilling system into operation, always check that the EMERGENCY STOP switch is
in full working order:
1. Press the EMERGENCY STOP switch.
▶Emergency stop is triggered.
If the drilling system is not connected or not paired, the auto-feed unit automatically initiates an
attempt to connect or pair.
→ Wait until this process has completed.
2. Reset the EMERGENCY STOP switch by pulling it up.
▶The drilling system changes to the Position CUT ASSIST mode.
▶The test is successfully completed and the drilling system is ready for use.

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4 Technical data
4.1 Product properties
Weight, ready for use 4.2 kg
(9.3 lb)
Dimensions (L × W × H) 176 mm x 137 mm x 325 mm
(6.9 in x 5.4 in x 12.8 in)
Max. permissible water supply pressure ≤ 6 bar
(≤ 90 psi)
Protection class Protection class II
Protection class IP 55
4.2 Bluetooth
Frequency band 2,400 MHz … 2,483 MHz
Maximum emitted transmission power 10 dBm
4.3 Rated voltage
Rated voltage 110 V … 120 V 220 V … 240 V
Rated frequency 50 Hz … 60 Hz 50 Hz … 60 Hz
Rated current input 0.6 A 0.4 A
4.4 Noise and vibration values
The auto-feed unit is a system product and is operated exclusively in combination with a diamond core
drilling machine. The operating noises of the auto-feed unit are minor and do not contribute to a relevant
increase in the acoustic emissions of the overall drilling system.
The acoustic emissions and vibration emissions of the diamond core drilling machine used apply.
Also study and follow all instructions relating to safety and operation in the corresponding operating
instructions of the system products (diamond core drilling machine, drill stand).
5 Preparations at the workplace
CAUTION
Risk of injury! Inadvertent starting of the product.
▶Unplug the supply cord before making adjustments to the power tool or before changing accessories.
Observe the safety instructions and warnings in this documentation and on the product.
5.1 Installing the auto-feed unit 3,2
WARNING
Risk of injury! The drill stand can rotate or topple if not securely fastened.
▶Before using the drilling system, always secure the drill stand to the surface of the material to be drilled
with an anchor.
▶Use only anchors suitable for the base material and comply with the anchor manufacturer's instructions.
Before installing the auto-feed unit, check the following points:
• The carriage of the drill stand has a mounting interface for a Hilti auto-feed unit.
• The hand wheel has been removed from the carriage of the drill stand.
The adapter for the auto-feed unit is on the side of the carriage. The auto-feed unit can be installed in
any of 5 mounting positions. The 5 mounting positions of the auto-feed unit are keyed in 30° steps
between 0° and 120°. The auto-feed unit can be secured with the securing screw only at these positions.

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1. Lock the carriage with the carriage lock.
2. Set the auto-feed unit on the mounting adapter of the drill stand.
3. Turn the auto-feed unit until the square shaft engages in the square-shaft adapter on the carriage.
4. Hold the auto-feed unit and disengage the carriage lock.
5. Position the auto-feed unit at one of the 5 keyed mounting positions.
▶The auto-feed unit engages correctly at the keyed position.
▶The EMERGENCY STOP switch is freely accessible.
▶The auto-feed unit does not obstruct the planned drilling operation.
6. Tighten the securing screw by hand.
7. Connect the cooling water connector of the auto-feed unit to the water connection of the diamond core
drilling machine.
8. Connect the electric supply cord and the water supply hose.
▶The water valve switches with an audible click.
9. Check that the auto-feed unit and the cooling water supply are correctly installed and connected.
5.2 Pairing auto-feed unit and diamond core drilling machine
5.2.1 Establishing a new Bluetooth connection (pairing)
Before you can use the auto-feed unit with a diamond core drilling machine as a drilling system, you have
to pair the two system products via Bluetooth. This pairing remains saved as a successful pairing operation
until you pair another auto-feed unit to the diamond core drilling machine, overwriting the existing pairing.
Pair the auto-feed unit only to a diamond core drilling machine recommended by Hilti. The supply
voltage must match the ratings stated on the rating plate of the diamond core drilling machine.
1. Install the auto-feed unit on the carriage of the drill stand. → page 6
2. Establish the electricity supply to the drilling system.
3. Simultaneously press the and buttons on the diamond core drilling machine.
4. Check that the EMERGENCY STOP switch is in full working order. → page 5
▶The auto-feed unit pairs with the diamond core drilling machine.
▶A symbol appears in the status bar of the display.
Other paired system products (e.g. DD WMS 100) can also be shown in the status bar.
5. The drilling system changes to the "Position CUT-ASSIST" mode.
▶The corresponding status indicator appears on the display.
5.2.2 Re-establishing an existing Bluetooth connection
When power is switched on, the auto-feed unit automatically attempts to re-establish the Bluetooth to the
diamond core drilling machine to which it is currently paired.
1. Establish the electricity supply to the drilling system.
2. Check that the EMERGENCY STOP switch is in full working order. → page 5
▶The auto-feed unit establishes a connection to the diamond core drilling machine.
▶A symbol appears in the status bar of the display.
Other paired system products (e.g. DD WMS 100) can also be shown in the status bar.
3. The drilling system changes to the "Position CUT-ASSIST" mode.
▶The corresponding status indicator appears on the display.

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6 Types of work
WARNING
Damaged power cords are a safety hazard! If the supply cord or extension cord is damaged while work
is in progress, immediately disconnect the device and the cord from the electricity supply. Do not touch the
damaged part of the cord.
▶Regularly check all supply cords. Replace defective extension cords. Have damaged power cords
replaced by a qualified specialist.
▶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 diamond core drilling machine!
▶In operation with the auto-feed unit, the and buttons on the diamond core drilling machine can be
assigned context-specific functions. In this case, an appropriate symbol appears on the display above
the corresponding button.
6.1 Performing the core drilling operation
DANGER
Risk of injury due to failure to observe the danger zone! The auto-feed unit is always in Cut Assist mode
after the diamond core drilling machine is switched on and it starts the automatic drilling process as soon
as the confirmation button on the diamond core drilling machine is pressed. The core bit is automatically
advanced until it contacts the surface of the object to be drilled.
▶Make sure there is no-one in the danger zone!
▶Keep the zone between the core bit and the surface of the object to be drilled clear!
• Before you start drilling, check that the auto-feed unit is paired to the diamond core drilling
machine. If the systems are not paired the EMERGENCY STOP switch has no effect!
• Do not run more than one power tool at a time off a generator or transformer. Switching another
power tool connected to the same generator/transformer on and off can cause undervoltage dips
and overvoltage spikes that can damage the product.
6.1.1 Positioning CUT-ASSIST
The following preconditions must be fulfilled:
• The auto-feed unit is mounted correctly on the drill stand.
• The auto-feed unit and the diamond core drilling machine are paired and the Bluetooth connection
is established.
• The display shows "Position CUT-ASSIST".
1. Set the drill stand to the correct drilling angle.
2. Use the and buttons to position the diamond core drilling machine.
▶The carriage moves faster when you hold the button down.
3. Install the core bit and other accessories.
4. Activate the continuous-running lock on the diamond core drilling machine.
▶The system changes to the "Set up CUT-ASSIST" mode. The corresponding status indicator appears
on the display.
6.1.2 Setting up and activating CUT-ASSIST
The following preconditions must be fulfilled:
• The auto-feed unit is mounted correctly on the drill stand.
• The auto-feed unit and the diamond core drilling machine are paired and the Bluetooth connection
is established.
• The continuous-running lock on the diamond core drilling machine is activated and the display
shows "Set up CUT-ASSIST".
1. Set other parameters of the drilling system as necessary.
▶Step through the sequence of functions by pressing the button.

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▶Step through the sequence of settings for the individual functions by pressing the button.
▶See Section 6.1.3 for more information about the possible settings.
2. Navigate to the "Set up CUT-ASSIST" mode.
3. Start the drilling operation by pressing the button.
6.1.3 Parameters to be set on the auto-feed unit
Before you start the drilling operation, you can set certain parameters for the current drilling operation. The
settings are saved for as long as the system remains connected to the electricity supply. When the power
supply is disconnected, the parameters are reset to the factory default settings.
You can set the following parameters:
Power reduction
In overload situations on the jobsite, the system's power draw can be reduced. This means that drilling can
continue without interruption. Reducing current consumption is comparable with reducing contact pressure
when using the diamond core drilling machine in manual mode.
There is a choice of 3 settings:
1. Minimum power
2. Medium power
3. Maximum power
The factory default setting for power reduction is maximum power.
Overhead drilling
The system does not open the water valve until you switch the diamond core drilling machine on. When you
have to carry out overhead work you can change this setting, for example to fill the core bit with water while
the motor is stopped, or to drain the core bit and then set it in motion.
There is a choice of 2 settings:
1. Manual actuation
2. Automatic actuation
The factory default setting for power reduction is automatic actuation.
Hole-starting mode for drilling at an angle and for small diameters (less than 25 mm)
Hole starting in general is done with sharply reduced contact pressure and low speed. When holes have to
be drilled at an angle or the diameter of the core bit is less than 25 mm, it is advisable to start the hole at
high speed.
There is a choice of 2 settings:
1. Standard control: Low speed in 1st gear and 2nd gear, high speed in 3rd gear
2. Alternative control: High speed in all gears.
The factory default setting for hole-starting mode is low speed in 1st gear and 2nd gear, high speed
in 3rd gear.
Break-through detection
WARNING
Risk of injury! Injury can result if someone is in the danger zone when the core bit breaks through. With
automatic break-through detection deactivated, after the hole has been drilled right through the material the
core bit continues to rotate and does not stop automatically.
▶Make sure there is no-one in the danger zone.
▶Fit the depth gauge.
You can deactivate automatic break-through detection, for example when you are going to drill very deep
holes or drill into heterogeneous materials with possible voids.
There is a choice of 2 settings:
1. Break-through detection activated
2. Break-through detection deactivated
The factory default setting for break-through detection is break-through detection activated.

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6.1.4 Drilling in CUT-ASSIST mode
This section describes the procedure for a typical drilling operation in CUT-ASSIST mode.
The following preconditions must be fulfilled:
• The auto-feed unit is mounted correctly on the drill stand.
• The auto-feed unit and the diamond core drilling machine are paired and the Bluetooth connection
is established.
• The continuous-running lock on the diamond core drilling machine is activated.
•The drilling operation has been started by pressing the button.
1. A "Surface search in progress" message appears on the display.
▶The drilling system searches for the surface of the material to be drilled.
▶The drilling system detects the surface.
2. The drilling system switches the cooling water supply on.
3. The drilling system starts drilling in hole-starting mode.
4. The drilling system switches to normal mode and carries out the drilling operation.
▶The current drilling depth is shown on the display.
5. On detecting a break-through or a depth-gauge stop, the drilling system returns to its initial position.
▶The diamond core drilling machine switches off.
▶The cooling water supply is shut off.
The drilling depth displayed is the totaled drilling depth since the last break-through detection
without depth-gauge stop detection. Drilling progress between two consecutive detections equals
the total depth of a drillhole.
The information is displayed until a new drilling operation after a break-through detection or a
depth-gauge stop detection is started.
6.2 Viewing drilling statistics (during and after the drilling operation)
In CUT-ASSIST mode, the analysis data of the diamond core drilling machine are supplemented by analysis
data of the auto-feed unit. You can call up the analysis data in the following situations:
• During the drilling operation.
• After the drilling operation (EMERGENCY STOP switch pressed)
Call up the analysis data by pressing the button. To browse through the analysis data, repeatedly press
the button.
The read-out disappears automatically after 30 seconds.
Analysis data of the auto-feed unit
Reset the 'Last Job' counter: You can manually reset all day counters (identifiable by the symbol)
of the available analysis data to 0:
•Press the button and hold it down for at least 5 seconds.
You can call up the following analysis data on the auto-feed unit:
Display Explanation
This shows you the operating modes (hand-held, rig-based, with auto-
feed unit) in which the diamond core drilling machine was operated
(figures are percentages since the last reset of the counter).

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Display Explanation
This shows you how deep the drilling system has drilled.
•shows depth drilled in AF-CA mode since the last reset.
•shows the total depth the diamond core drilling machine has
drilled in AF-CA mode.
You can toggle the unit of measure (metric or imperial) used for the
readings. Press the button and hold it down for 3 seconds.
This shows you how many holes the drilling system has drilled. The
number is the total of break-through detections and depth-gauge stop
detections.
•shows the number of holes drilled in AF-CA mode since the last
reset.
•shows the total number of holes the diamond core drilling machine
has drilled in AF-CA mode.
6.3 Breaks between work and storage at low temperatures
At temperatures below 4 °C (39 °F), the water in the cooling circuit has to be blown out with compressed air
when drilling is interrupted for more than one hour and before the equipment is stowed away.
6.4 Removing the auto-feed unit
1. Lock the carriage with the carriage lock.
2. Disconnect the drilling system from the electricity supply.
3. Close the water flow regulator valve and turn off the water supply.
4. Disconnect the water hose running to the diamond core drilling machine.
5. Take a firm grip on the auto-feed unit and unscrew the securing screw.
6. Remove the auto-feed unit.
7 Care and maintenance
WARNING
Electric shock hazard! Attempting care and maintenance with the supply cord connected to a power outlet
can lead to severe injury and burns.
▶Always unplug the supply cord before carrying out care and maintenance tasks.
Care
• Carefully remove stubborn dirt from the tool.
• Clean the air vents carefully with a dry brush.
• Use only a slightly damp cloth to clean the casing. Do not use cleaning agents containing silicone as
they can attack the plastic parts.
Maintenance
WARNING
Danger of electric shock! Improper repairs to electrical components may lead to serious injuries including
burns.
▶Repairs to the electrical section of the tool or appliance may be carried out only by trained electrical
specialists.
• Check all visible parts and controls for signs of damage at regular intervals and make sure that they all
function correctly.
• Do not operate the product if signs of damage are found or if parts malfunction. Have it repaired
immediately by Hilti Service.
• After cleaning and maintenance, fit all guards or protective devices and check that they function correctly.
To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare
parts, consumables and accessories approved by Hilti for use with the product can be found at your
local Hilti Store or online at: www.hilti.group.

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8 Transport and storage
Transport
▶Do not transport this product with an accessory tool installed.
▶Make sure that the equipment is held securely throughout all transport operations.
▶After transporting, always check all visible parts and controls for signs of damage and make sure that
they all function correctly.
Storage
▶Always store this product with the electric supply cable unplugged from the electricity supply.
▶Store this product in a dry place, where it cannot be accessed by children or unauthorized persons.
▶After a long period of storage, always check all visible parts and controls for signs of damage and make
sure that they all function correctly.
9 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
9.1 Product is not in working order
Malfunction Possible cause Action to be taken
Service required
Maintenance work or servicing
required.
▶Contact Hilti Service.
Emergency stop
An emergency stop was triggered. ▶Cancel the emergency stop by
pulling up the EMERGENCY
STOP switch. → page 5.
▶If the problem persists, consult
Hilti Service.
Fault in AC supply
Supply network fault – the power
supply has been interrupted.
▶Check whether other power
consumers are disrupting the
power supply from the network
or generator.
▶Check the length of the exten-
sion cord used.
▶Switch the diamond core drilling
machine and the auto-feed unit
off and then on again.
9.2 Product is in working order
Malfunction Possible cause Action to be taken
Overheating
Overheating. ▶Allow the machine to cool down.
The Unknown error service
indicator lights up.
Attempt to pair incompatible sys-
tem products.
▶Check whether the auto-feed
unit is compatible with the
diamond core drilling machine
(model, voltage ratings).
▶Repeat the pairing attempt with
compatible system products.

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Malfunction Possible cause Action to be taken
Diamond core bit jams
The diamond core bit has become
jammed in the base material.
▶Turn the hand wheel and try to
release the diamond core bit
by moving the carriage up and
down.
The auto-feed unit cannot be
installed.
Square drive does not fit, or is not
turned to a position at which it can
slot into the adapter.
▶Turn the auto-feed unit until the
square shaft and the square-
shaft socket are in alignment.
The flange on the carriage of the
drill stand or on the auto-feed unit
is dirty or worn.
▶Clean the flange and check the
flange for excessive wear.
▶Replace excessively worn
components.
The threaded bushing for the se-
curing screw is blocked.
▶Clean the threaded bushing.
The hand wheel cannot be
rotated.
The carriage lock is engaged. ▶Try to turn the auto-feed unit to
match up the flanges.
▶Check the threaded bushings
and the threaded studs.
The carriage is obstructed. ▶Make sure that the carriage is
free to move.
The water flow rate is too low. Strainer of the auto-feed unit is
clogged.
▶Clean the strainer in the water
inlet.
Water valve of the auto-feed unit is
faulty or blocked.
▶Connect the water supply
directly to the diamond core
drilling machine and check
whether the water valve on the
diamond core drilling machine
is working.
▶Check whether the valve on
the auto-feed unit is blocked or
faulty.
▶Check that the water supply is
installed correctly.
The auto-feed unit motor runs
but the carriage does not
move.
The auto-feed unit is installed in-
correctly.
▶Check the mechanical connec-
tion between the auto-feed unit
and the carriage.
Cut Assist mode cannot be
activated.
Auto-feed unit has no AC supply. ▶Check the electricity supply.
An emergency stop was triggered. ▶Cancel the emergency stop by
pulling up the EMERGENCY
STOP switch. → page 5.
▶If the problem persists, consult
Hilti Service.
The drilling operation slows or
stops.
The diamond core bit is defective
(segments polished or destroyed).
▶Sharpen the diamond core bit
or replace it.
The plug connector is faulty or the
cable is defective.
▶Check the connection between
the auto-feed unit and the
diamond core drilling machine.
The diamond core bit is stuck. ▶Disconnect the diamond core
drilling machine from the electric
supply.
▶Release the diamond core bit.
Faulty or inadequate cooling. ▶Check the water supply and
cooling circuit.

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Malfunction Possible cause Action to be taken
The drilling operation slows or
stops.
Stopped before reaching the target
depth due to transition into softer
material such as hollow brick, soil
or natural stone.
▶Restart the drilling operation.
▶Switch break-through detection
off.
The drilling system vibrates
severely during drilling.
The drill stand is inadequately fas-
tened.
▶Check that the clamping spindle
nut is tightened securely.
The carriage has too much play. ▶Adjust the play between rail
and carriage (comply with the
operating instructions of the
system components).
Securing screw not correctly tight-
ened (e.g. after a change of angle).
▶Tighten the securing screw
→ page 6.
Core bit is faulty or worn. ▶Check the condition of the core
bit; replace the core bit if it
shows visible signs of damage
or wear.
Chuck has worked loose. ▶Check that core bit and chuck
are correctly installed.
Contact pressure is too high. ▶Continue drilling in CUT ASSIST
mode.
▶Reduce power. Gradually
increase power as soon as the
drilling system is able to drill
without vibrating.
10 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
▶Do not dispose of power tools, electronic equipment or batteries as household waste!
11 Manufacturer’s warranty
▶Please contact your local Hilti representative if you have questions about the warranty conditions.
12 FCC statement / ISED statement
Changes or modifications not expressly approved by Hilti may restrict the user’s right to operate the product.
This product complies with the requirements set out in Paragraph 15 of the FCC rules and the license-
exempt RSS standards of Industry Canada.
Operation of the product is subject to the following conditions:
▶This product should cause no harmful interference.
▶This product must accept any interference received, including interference that may cause undesired
operation.
13 Further information
For more information on operation, technology, environment and recycling, follow this link:
qr.hilti.com/manual?id=2299965
This link is also to be found at the end of the documentation, in the form of a QR code.

*2299965* 2299965 Français 15
Mode d'emploi original
1 Indications relatives à la documentation
1.1 À propos de cette documentation
• Lire intégralement la présente documentation avant la mise en service. C'est la condition préalablement
requise pour assurer la sécurité du travail et un maniement sans perturbations.
• Bien respecter les consignes de sécurité et les avertissements de la présente documentation ainsi que
celles figurant sur le produit.
• Toujours conserver le mode d'emploi à proximité du produit et uniquement le transmettre à des tiers
avec ce mode d'emploi.
1.2 Explication des symboles
1.2.1 Avertissements
Les avertissements attirent l'attention sur des dangers liés à l'utilisation du produit. Les termes de
signalisation suivants sont utilisés :
DANGER
DANGER !
▶Pour un danger imminent qui peut entraîner de graves blessures corporelles ou la mort.
AVERTISSEMENT
AVERTISSEMENT !
▶Pour un danger potentiel qui peut entraîner de graves blessures corporelles ou la mort.
ATTENTION
ATTENTION !
▶Pour une situation potentiellement dangereuse pouvant entraîner des blessures corporelles ou des
dégâts matériels.
1.2.2 Symboles dans la documentation
Les symboles suivants sont utilisés dans la présente documentation :
Lire le mode d'emploi avant d'utiliser l'appareil
Pour des conseils d'utilisation et autres informations utiles
Maniement des matériaux recyclables
Ne pas jeter les appareils électriques et les accus dans les ordures ménagères
1.2.3 Symboles dans les illustrations
Les symboles suivants sont utilisés dans les illustrations :
Ces chiffres renvoient à l'illustration correspondante au début du présent mode d'emploi
La numérotation détermine la séquence des étapes de travail dans l'image et peut se différencier
de celles des étapes de travail dans le texte
Les numéros de position sont utilisés dans l'illustration Vue d’ensemble et renvoient aux numé-
ros des légendes dans la section Vue d'ensemble du produit
Ce signe doit inviter à manier le produit en faisant particulièrement attention.

16 Français 2299965 *2299965*
1.3 Symboles spécifiques au produit
1.3.1 Symboles sur le produit
Les symboles suivants peuvent être utilisés sur le produit :
Courant alternatif
Classe de protection II (double isolation)
Le produit supporte la transmission de données sans fil.
Si présent sur le produit, c'est que le produit a été certifié conformément aux normes en vigueur
par cet organisme de certification pour le marché nord-américain et canadien.
1.4 Informations produit
Les produits sont destinés aux professionnels et ne doivent être utilisés, entretenus et réparés
que par un personnel autorisé et formé. Ce personnel doit être spécialement instruit quant aux dangers
inhérents à l'utilisation de l'appareil. Le produit et ses accessoires peuvent s'avérer dangereux s'ils sont
utilisés de manière incorrecte par un personnel non qualifié ou de manière non conforme à l'usage prévu.
La désignation du modèle et le numéro de série figurent sur sa plaque signalétique.
▶Inscrivez le numéro de série dans le tableau suivant. Les informations produit vous seront demandées
lorsque vous contactez nos revendeurs ou services après-vente.
Caractéristiques produit
Unité d'avance du forage DD AF-CA H
Génération : 01
N° de série :
2 Sécurité
2.1 Fonctionnement sécurisé de l'unité d'avance de perçage
AVERTISSEMENT
Non-respect des consignes de sécurité relatives aux produits système ! L'unité d'avance de perçage est
un produit système qui ne doit être utilisé qu'en relation avec une carotteuse diamant et une colonne de forage.
▶Utiliser l'unité d'avance de perçage uniquement avec des produits système compatibles stipulés au
chapitre "Utilisation conforme à l'usage prévu".
▶Lire et suivre également toutes les instructions de sécurité et d'utilisation figurant dans les modes
d'emploi correspondants des produits système (carotteuse diamant, colonne de forage).
Lire toutes les consignes de sécurité, instructions, illustrations et caractéristiques techniques, qui
accompagnent cet outil électroportatif. Tout manquement à l'observation des instructions suivantes ou
des instructions fournies avec les produits système risque de provoquer une électrocution, un incendie et/ou
de graves blessures.
Les consignes de sécurité et instructions doivent être intégralement conservées pour les utilisations
futures.
La notion d'« outil électroportatif » mentionnée dans les consignes de sécurité se rapporte à des outils
électriques raccordés au secteur (avec câble d'alimentation) et à des outils électriques sur accu (sans câble
d'alimentation).
Indications générales de sécurité
▶En cas d'utilisation du système de forage avec unité d'avance de perçage, toujours fixer la colonne
de forage avec des chevilles. Il est interdit d'utiliser une pompe à vide. En mode automatique de
l'unité d'avance de perçage, la semelle-ventouse peut se détacher si la dépression tombe de manière
inattendue en dessous de la plage de consigne.
▶L'outil électroportatif doit être tenu à l'écart des enfants.
▶Démonter le volant à main en cas d'utilisation du système de forage avec l'unité d'avance de
perçage. En mode automatique de l'unité d'avance de perçage, le volant à main tourne également et
peut entraîner des blessures ou enrouler des câbles ou conduites flexibles.