Switching Off The Diamond Core Drilling Machine; Dd-Hd 30: Detaching The Diamond Core Drilling Machine From The Drill Stand; Care Of The Product - Hilti DD 250 Manual De Usuario

6.7 Switching off the diamond core drilling machine

WARNING
Risk of personal injury and material damage The diamond core bit fills with water during overhead
drilling. The diamond core drilling machine may become damaged and the risk of electric shock is
increased.
▶ As a first step, carefully allow the water to drain away after completing overhead drilling. This is
done by disconnecting the water supply from the water flow regulator and draining the water by
opening the water flow regulator. Do not allow the water to run over the motor and cover.
1. Connect the water flow regulator to the diamond core drilling machine.
2. Remove the diamond core bit from the hole.
3. Switch off the diamond core drilling machine.
4. Lock the carriage on the rail with the carriage lock.
5. Switch off the wet-type industrial vacuum cleaner (if used).

6.8 DD-HD 30: Detaching the diamond core drilling machine from the drill stand

1. Lock the carriage on the rail with the carriage lock.
2. Remove the supply cord from the cord guide on the carriage cover.
CAUTION
Risk of personal injury and material damage Hazard presented by a falling diamond core drilling
machine.
▶ Hold the core drilling machine tightly with one hand by the carrying handle.
3. Loosen the eccentric pin for locking the tool on the carriage.
4. Pull out the eccentric pin.
5. Remove the diamond core drilling machine from carriage.
6. Push the eccentric pin into the carriage as far as it will go.
6.9 DD­ST 200: Detaching the diamond core drilling machine from the drill stand
Note
The drive unit and the carriage form a unit. The diamond core drilling machine can thus be removed
from the drill stand together with the carriage.
1. Remove the end stop screw from the end of the rail.
2. Release the carriage locking mechanism.
3. Detach the diamond core drilling machine from the drill stand.
4. Refit the end stop screw to the end of the rail. The safety-relevant end-stop function becomes inoperative
if this component is not fitted.
7 Care, maintenance, transport and storage

7.1 Care of the product

▶ Keep the product, especially its grip surfaces, clean and free from oil and grease. Do not use
cleaning agents containing silicone.
▶ Never operate the product when the air vents are blocked. Clean the air vents carefully using a dry brush.
Do not allow foreign objects to enter the interior of the product.
▶ Clean the outside of the tool at regular intervals with a slightly damp cloth. Do not use a spray, steam
pressure cleaning equipment or running water for cleaning.
▶ Always keep the connection end of the core bit clean and lightly greased.
▶ After carrying out care and maintenance, check that all protective and safety devices are fitted and that
they function with no defects.
▶ If service or repair is required, please contact your salesperson or refer to our contact details at
www.hilti.com .
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