Replacing The Carbon Brushes; Transport And Storage - Hilti DD 200 / DD-HD 30 Manual De Usuario

1. Loosen the adjusting screws using a 5 mm hex key (do not remove the screws).
2. Using a 19 mm open-end wrench, turn the adjusting screws so that the rollers are pressed slightly against
the rail.
3. Tighten the adjusting screws firmly. The carriage is correctly adjusted when it remains in position without
a diamond core drilling machine fitted and moves down when a drilling machine is mounted.
7.1.2 DD-ST 200: Adjusting the play between the rail and carriage
You can adjust the play between rail and carriage using the 6 adjusting screws on the carriage.
1. Use a hexagon socket wrench to tighten the adjusting screws hand-tight.
Technical data
Tightening torque
2. Then loosen the four adjusting screws at the side by turning them half of a turn and the two rear adjusting
screws by turning them quarter of a 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.
7.2

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.
The indicator with the open-end wrench symbol lights up when the carbon brushes need to be changed.
Always change all the carbon brushes at the same time.
1. Disconnect the diamond core drilling machine from the power supply.
2. Open the carbon brush covers on the left-hand and right-hand side of the motor.
3. 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.
4. Fit the new carbon brushes so that they are positioned 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.
5. Screw on the carbon brush covers on the left- and right-hand side of the motor.
6. Run in the carbon brushes by letting the machine run under no load for at least one minute without
interruption.
After replacing the carbon brushes, the indicator lamp will go out after the machine has run for
approx. one minute.
If the minimum running-in time of one minute is not observed, the life of the carbon brushes will be
greatly reduced.
7.3

Transport and storage

ATTENTION
Hazard due to low temperatures! Water finding its way into this product can result in damage and increases
the risk of electric shock.
▶ When temperatures drop below zero, check that no water remains in the 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.
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