Hilti DD VP-U Mode D'emploi Original page 9

▶ If the safety valve trips, the vacuum pump stops creating vacuum and the partial vacuum created until
then will slowly drop.
▶ Interrupt the drilling operation and switch the drilling system off. Secure the drilling system so that
nothing can fall.
▶ Empty the water separator. → page 5
6.5 Switching off vacuum pump
1. Stop drilling and switch the drilling system off.
2. Remove the drilling system.
3. Switch the vacuum pump off by pressing the on/off switch.
4. Operate the vacuum release valve on the vacuum base plate.
▶ If applicable, set the drill stand down safely.
5. Remove the vacuum hose from the vacuum base plate.
6. Unplug the supply cord from the power outlet.
7 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 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.
• 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.
7.1 Emptying water separator
If the water separator fills up while drilling is in progress or if the safety valve trips, interrupt the drilling
operation, switch the drilling system off and secure the drilling system so that nothing can fall.
1. Interrupt the drilling operation and switch the drilling system off.
2. Secure the drilling system so that nothing can fall.
1. Switch the vacuum pump off.
2. If applicable, vent the vacuum.
3. Turn the water separator container in the OPEN direction and pull it down and off (bayonet connection).
4. Empty the container.
*416186*
416186 English 5