![background image](http://html.mh-extra.com/html/hilti/dd-350-ca/dd-350-ca_original-operating-instructions_2135240031.webp)
NOTE
In addition to these operating instructions, the information given in the operating instructions for the other components
of the core drilling system, especially the operating instructions for the optional drilling feed unit, must always be
observed.
WARNING
The machine may be operated only when connected to an adequately-rated electric supply equipped with an
earth (ground) conductor.
DANGER
Use only the genuine Hilti accessories or ancillary equipment listed in the operating instructions.
Use of
accessories or ancillary equipment not listed in the operating instructions may present a risk of personal injury.
2.2 Use of the system with various items of equipment
Equipment
Core bit diameter
Drilling direction
Standard working
length
With water collection system
52…250 mm
All directions
500 mm
System without water collection
system
52…500 mm
All directions
500 mm
The core drilling machine complies with IP55 requirements and thus features protection against sprayed water. This
allows drilling to be carried out in all directions without use of a wet-type vacuum cleaner.
The machine may be operated only when an adequate supply of cooling water is ensured (at least 0.5 l/min at a water
temperature of max. 30°C) .
When the drilling column (rail) is extended to a length of 2 m or more, an additional support or brace must be fitted,
e.g. a bracing spindle.
2.3 Indicators on the control panel for service, cooling/voltage and drilling power
Service indicator
Lights
Bring the core drilling machine to a Hilti
Service Center
Blinks for a short time
Faults or errors in the machine (see
Troubleshooting section)
Blinks continuously
Bring the machine to a Hilti Service
Center immediately (failure to follow
this instruction may affect entitlement
to benefits under the optional 2-year full
service agreement!)
Indicators for cooling and voltage er-
ror
Lights
Check the water flow rate
Blinks
Check the electric supply (see
Troubleshooting section)
Drilling performance indicator
Orange light
Low contact pressure, e.g. when start-
ing drilling
Green light
Optimum contact pressure (after the
hole has been started)
Red light
Contact pressure too high
2.4 Gears and the corresponding core bit diameters
Gear
Core bit diameter
(mm)
Core bit diameter
(inches)
Speed under no load
220-240 V (/min)
Speed under no load
110 V (/min)
1
52…62
2…2³⁄₈
667
667
2
72…92
2³⁄₄…3¹⁄₂
667
667
3
102…112
4…4¹⁄₂
667
619
4
122
4³⁄₄
619
571
5
127…142
5…5¹⁄₂
571
524
en
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Printed: 03.12.2014 | Doc-Nr: PUB / 5209037 / 000 / 00
Содержание DD 350-CA
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