Care And Maintenance - Hilti DD 160 Original Operating Instructions

flow regulator. Do not allow the water to run over the
motor and cover.
1. Remove the diamond core bit from the hole.
2. Engage the carriage lock.
3. Switch the machine off.
4. Close the water flow regulator.
5. Switch off the vacuum cleaner (if used).
en
7.7 Procedure in the event of the core bit sticking
The safety clutch releases in the event of the core bit
binding and sticking. Following this, the motor is switched
off by the electronic control system. The core bit can be
released by taking the following action:
7.7.1 Using an open-end wrench to release the
core bit
1. Disconnect the supply cord plug from the power
outlet.
2. Grip the core bit with a suitable open-end wrench
close to the connection end and release the core bit
by rotating it.
3. Plug the machine's supply cord into the power out-
let.
4. Resume the drilling operation.
7.7.2 Using the hand wheel to release the core bit
1. Disconnect the supply cord plug from the power
outlet.
2. Release the core bit from the hole by turning it with
the hand wheel.
3. Plug the machine's supply cord into the power out-
let.

8 Care and maintenance

CAUTION
Disconnect the supply cord plug from the power out-
let.
8.1 Care of cutting tools and metal parts
Remove any dirt adhering to the surface of cutting tools,
the chuck and drive spindle and protect their surfaces
from corrosion by rubbing them with an oily cloth from
time to time.
Always keep the connection end clean and lightly
greased.
8.2 Care of the machine
CAUTION
Keep the machine, especially its grip surfaces, clean
and free from oil and grease. Do not use cleaning
agents which contain silicone.
The outer casing of the machine is made from impact-
resistant plastic.
Never operate the machine when the ventilation slots are
blocked. Clean the ventilation slots carefully using a dry
36
4. Resume the drilling operation.
7.8 Dismantling
CAUTION
Disconnect the supply cord plug from the power out-
let.
1. For instructions on removing the diamond core bit,
please refer to the section "Removing the diamond
core bit".
2. Remove the core if necessary.
3. Detach the drill stand from the base material.
7.8.1 Removing the system as a unit
NOTE
If you wish to remove the drilling system as a complete
unit (without first removing the core bit) it is recommended
that the drive unit is lowered on the rail (after switching
off) until in contact with the base material. This will help
to prevent it tipping over.
7.9 Disposing of drilling slurry
Please refer to the section "Disposal".
7.10 Transport and storage
Open the water flow regulator before putting the machine
into storage.
CAUTION
When temperatures drop below zero, check to ensure
that no water remains in the power tool.
WARNING
Do not lift the machine and/or the drill stand by crane.
brush. Do not permit foreign objects to enter the interior of
the machine. Clean the outside of the machine at regular
intervals with a slightly damp cloth. Do not use a spray,
steam pressure cleaning equipment or running water for
cleaning. This may negatively affect the electrical safety
of the machine.
8.3 Maintenance
WARNING
Repairs to the electrical section of the machine may
be carried out only by trained electrical specialists.
Check all external parts of the power tool for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the power tool if parts are
damaged or when the controls do not function faultlessly.
If necessary, the power tool should be repaired by Hilti
Service.