Hilti DD 160 Original Operating Instructions page 29

Lower: Use of the vacuum securing method for overhead
drilling with the drill stand is not permissible.
On the machine
Use of the water collection system in conjunction with
a wet-type industrial vacuum cleaner is a mandatory
requirement for working on ceilings.
On the machine
208188 B/2.2004
Operate the system only with a properly functioning
PRCD.
Location of identification data on the machine
The type designation and serial number can be found on
the type identification plate on the machine. Make a note
of this data in your operating instructions and always refer
to it when making an enquiry to your Hilti representative
or service department.
Type:
Generation: 02
Serial no.:
en
23