Removal Of The Diamond Core Drilling Machine; Care And Maintenance - Hilti DD 120 Manual De Instrucciones

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. Lock the diamond core drilling machine with the carriage lock.
4. Switch off the diamond core drilling machine.
5. Switch off the wet-type industrial vacuum extractor, if used.
6.8

Removal of the diamond core drilling machine

1. Unplug the supply cord from the power outlet.
2. See the section headed "Removing the diamond core bit" → page 31 for instructions on removing the
diamond core bit.
3. Remove the core, if necessary.
4. Remove the diamond core drilling machine from the working surface.
If you remove the system as a complete unit, after setting it down it is advisable to run the machine
all the way down the rail until the core bit is in contact with the floor. This will help prevent the
diamond core drilling machine from toppling over.
7

Care and maintenance

7.1 Care and maintenance
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.
Care
• Carefully remove any dirt that may be adhering to parts.
• 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
these may 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.
• Check all visible parts and controls for signs of damage at regular intervals and make sure that they all
function correctly.
• Do not operate the product if signs of damage are found or if parts malfunction. Have it repaired
immediately by Hilti Service.
• After cleaning and maintenance, fit all guards or protective devices and check that they function correctly.
To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare
parts, consumables and accessories approved by Hilti for use with the product can be found at your
local Hilti Store or online at: www.hilti.group.
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Printed: 09.08.2019 | Doc-Nr: PUB / 5069516 / 000 / 07
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