Care And Maintenance; Adjusting The Play Between The Rail And Carriage; Transport And Storage - Hilti DD 350 Manual Del Usuario

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5. Remove the diamond core drilling machine from the carriage.
6. Push the eccentric pin into the carriage as far as it will go.

6 Care and maintenance

WARNING
Danger of electric shock! Carrying out care and maintenance while the supply cord is connected to
the power outlet presents a risk of serious injuries including burns.
▶ Always unplug the supply cord before carrying out all care and maintenance tasks.
Care
• Carefully remove stubborn dirt from the tool.
• Clean the air vents carefully with a dry brush.
• Use only a slightly damp cloth to clean the casing. Do not use cleaning agents containing silicone as
they can attack the plastic parts.
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.
36 English
Printed: 02.11.2017 | Doc-Nr: PUB / 5145256 / 000 / 04