Care And Maintenance; Replacing The Carbon Brushes - Hilti DD 150-U Bedienungsanleitung

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 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.
7.1 Care of diamond core drilling machine
▶ Do not use a spray, pressure jet washer or running water for cleaning.
➥ Prevent unnecessary exposure of the battery to dust or debris and never subject the battery to
soaking moisture (e.g., submerged in water or left out in the rain).
▶ Clean the chuck and the clamping segments with a cloth at regular intervals and lubricate the parts with
Hilti lubricant spray.
▶ Remove all particles of foreign matter from the chuck.
▶ Occasionally remove the filter from the water inlet in the side handle and flush the filter mesh with water
in the direction opposite to the normal water flow.
▶ Remove and clean the water flow rate indicator as soon as it is dirty.
➥ Do not use abrasive cleaning agents or sharp objects to clean the sight glass.
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 service display appears in the display when the carbon brushes need to be replaced. 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 sides of the motor.
➥ Take note of how the carbon brushes are installed and how the conductors are positioned.
3. Remove the worn carbon brushes from the diamond core drilling machine.
4. Fit the new carbon brushes, positioning them 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.
52 English
Printed: 19.09.2019 | Doc-Nr: PUB / 5501754 / 000 / 03
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