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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
Replacing the carbon brushes
DANGER
Risk of injury! Risk of electric shock.
▶ The power tool may be operated, serviced and repaired only by trained, authorized personnel. This
personnel must be specially informed of any possible hazards.
The service indicator lights up when the carbon brushes need to be replaced. Diagrams on the inside
of the carbon-brush covers show the correct direction of installation and routing of the wires.
Always change all the carbon brushes at the same time.
1. Disconnect the slitting tool from the electricity supply.
2. Remove the top and bottom carbon-brush covers from the rear of the power tool.
3. Take note of how the carbon brushes are fitted and
how the wires are routed.
4. Disconnect the wires, ease the springs aside and
remove the worn carbon brushes from the slitting
tool.
5. 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.
6. Use only these genuine replacement carbon-brush
sets:
Spare-part numbers of the carbon-brush sets
Voltage range
110 V ... 127 V
220 V ... 240 V
10
English
Spare-part number
2120033
2006843
Top carbon-brush cover
@
Bottom carbon-brush cover
;
2208336
*2208336*
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