Adjusting The Play Between The Rail And Carriage; Transport And Storage; The Diamond Core Drilling Machine Is In Working Order - Hilti DD 350 Manual Del Usuario

Maintenance
WARNING
Danger of electric shock! Improper repairs to electrical components may lead to serious injuries
including burns.
▶ Repairs to the electrical section of the tool or appliance may be carried out only by trained electrical
specialists.
• At regular intervals, check all visible parts and the controls for signs of damage and make sure that they
all function correctly.
• Do not operate the power tool if signs of damage are found or if parts malfunction. Have damage repaired
immediately by Hilti Service.
• After cleaning and maintenance, refit all guards or protective devices and check that they function
correctly.

6.1 Adjusting the play between the rail and carriage

Note
You can adjust the play between the rail and carriage using the four adjusting screws on the carriage.
The four adjustable rollers are adjusted as described below.
1. Loosen the adjusting screws using a 5 mm hexagon socket wrench (do not remove the screws).
2. Use a 19 mm open-end wrench to 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 the drilling machine is fitted.

7 Transport and storage

• Do not transport electric tools with accessory tools fitted.
• Always unplug the supply cord before storing an electric tool or appliance.
• Store tools and appliances in a dry place where they cannot be accessed by children or unauthorized
persons.
• Check electric tools or appliances for damage after long periods of transport or storage.
7.1 Storage of the equipment and breaks at freezing temperatures
Note
At temperatures below 4 °C (39 °F), the water in the cooling circuit has to be blown out with compressed
air when drilling is interrupted for more than one hour and before the equipment is stowed away.
1. Interrupt the water supply.
2. Disconnect the water supply from the diamond core drilling machine.
3. Open the water flow regulator.
4. Set the 3-way valve to Wet drilling.
5. Use compressed air (max. 3 bar) to blow the water out of the water circuit.
8 Troubleshooting
If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.

8.1 The diamond core drilling machine is in working order

Malfunction
The service indicator lights.
16 English
Printed: 18.10.2017 | Doc-Nr: PUB / 5236054 / 000 / 02
Possible cause
Service interval reached.
Action to be taken
▶ Bring the diamond core drilling
machine to Hilti at your earliest
convenience.