Disposal; Manufacturer's Warranty - Hilti DD AF-CA Operating Instructions Manual

Fault
The drilling operation slows or
stops.

10 Disposal

Most of the materials from which Hilti tools, machines or appliances are manufactured can be recycled. The materials
must be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for
taking back old tools, machines and appliances for recycling. Ask Hilti customer service or your Hilti representative for
further information.
Recommended pretreatment before disposal of drilling slurry
NOTE
Disposal of drilling slurry directly into rivers, lakes or the sewerage system without suitable pretreatment presents
environmental problems. Ask the local public authorities for information about current regulations.
1. Collect the drilling slurry (e.g. using a wet-type industrial vacuum cleaner).
2. Allow the drilling slurry to settle and dispose of the solid material at a construction waste disposal site (addition
of a flocculent may accelerate the settling process).
3. The remaining water (alkaline, pH value > 7) must be neutralized by the addition of an acidic neutralizing agent or
diluted with a large volume of water before it is allowed to flow into the sewerage system.

11 Manufacturer's warranty

Please contact your local Hilti representative if you have
questions about the warranty conditions.
Possible cause
The plug connection is faulty or the
cable is defective.
The core bit is stuck.
Faulty or inadequate cooling.
Stop before reaching the target depth
due to transition into softer material
such as hollow brick, soil or natural
stone.
Remedy
Check the connection between the
drilling feed unit and the core drilling
machine.
If the cable is faulty, return the unit to
Hilti Service.
Disconnect the core drilling machine
from the electric supply.
Release the core bit.
Check the water supply and cooling
circuit.
Restart the drilling operation.
en
11