Adjusting The Play Between The Rail And Carriage; Transport Of The Diamond Core Drilling Machine - Hilti DD 120 Manual De Instrucciones

7.2

Adjusting the play between the rail and carriage

1. Tighten the carriage play adjusting screws with a hex key.
Technical data
Tightening torque
2. Slacken the adjusting screws slightly by turning back a 1/4 turn.
3. The carriage is correctly adjusted when it remains in position without a diamond core bit but moves down
when a diamond core bit is fitted.
7.3 Replacing the carbon brushes
WARNING
Risk of injury due to electric shock !
▶ The machine may be operated, serviced and repaired only by trained, authorized personnel. This
personnel must be specially informed of any possible hazards.
WARNING
Electric shock hazard! Attempting care and maintenance with the supply cord connected to a power outlet
can lead to severe injury and burns.
▶ Always unplug the supply cord before carrying out care and maintenance tasks.
1. Open the carbon brush covers on the left-hand and right-hand sides of the motor.
2. Take note of how the carbon brushes are fitted and how the conductors are positioned. Remove
the worn carbon brushes from the diamond core drilling machine.
3. Fit the new carbon brushes, positioning them exactly the same as the old ones fitted previously.
Take care to avoid damaging the insulation on the indicator lead as you insert the brushes.
4. Screw on the carbon brush covers on the left- and right-hand side of the motor.
5. Run in the carbon brushes by letting the machine run under no load for at least one minute without
interruption.
➥ The indicator lamp goes out after approx. 1 minute's operation.
8 Transport and storage
Transport
▶ Do not transport this product with an accessory tool installed.
▶ Make sure that the equipment is held securely throughout all transport operations.
▶ After transporting, always check all visible parts and controls for signs of damage and make sure that
they all function correctly.
Storage
▶ Always store this product with the electric supply cable unplugged from the electricity supply.
▶ Store this product in a dry place, where it cannot be accessed by children or unauthorized persons.
▶ After a long period of storage, always check all visible parts and controls for signs of damage and make
sure that they all function correctly.
8.1

Transport of the diamond core drilling machine

WARNING
Risk of injury! Parts can work loose and drop off.
▶ Do not lift the diamond core drilling machine and/or the drill stand by crane.
▶ Transport the diamond core drilling machine, drill stand and core bit as separate units.
➥ Use the wheel assembly (accessory) as an aid when transporting the equipment.
▶ Open the water flow regulator before stowing away the diamond core drilling machine.
34 English
Printed: 09.08.2019 | Doc-Nr: PUB / 5069516 / 000 / 07
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5 Nm
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