Care And Maintenance; Troubleshooting - Hilti TE MD25 T Bedienungsanleitung

-CAUTION-
Take care to ensure that no persons in the vicinity are
injured when removing the drill bit.

8. Care and maintenance

Disconnect the supply cord plug from the mains socket.
8.1 Care of insert tools
Remove any dirt adhering to the surface of the insert
tools and protect them from corrosion by rubbing them
with an oily cloth from time to time.
8.2 Care of the tool
The outer casing of the tool is manufactured from impact-
resistant plastic. The grip section is manufactured from
synthetic rubber.
-NOTE-
The following information printed on the grey background
has to be generally respected for all tools and in all envi-
ronsments.
Check all external parts of the tool for damage at regu-
lar intervals and check that all controls operate fault-
lessly. Damaged plastic parts of the housing must be
replaced immediately due to their explosion protection
function.
Use a slightly damp cloth to clean the outside of the tool
at regular intervals. Always keep the grip sections of the

9. Troubleshooting

9.1 Explanation of the operating status / service indicator lamps
The tool is equipped with two lamps which indicate its operating status or faults by lighting in different ways:
Fault indicator Ready and
(red lamp) service indicator
(green lamp)
Off Off
Off Lights
Lights Lights
Blinks Lights
Off Blinks
24
Printed: 20.04.2017 | Doc-Nr: PUB / 5136181 / 000 / 01 Printed: 20.04.2017 | Doc-Nr: PUB / 5136181 / 000 / 00 Printed: 22.05.2014 | Doc-Nr: PUB / 5136181 / 000 / 00
tool free from oil and grease. Do not use cleaning agents
or polishes, etc., containing silicone.
Keep the chuck clean. Check the drill steel for damage
and wear at the grooves and ensure that the water pas-
sage is not obstructed.
Do not operate the tool when parts are damaged or when
the controls do not operate faultlessly. If necessary, have
the tool repaired at a Hilti service centre.
Electrical sections of the tool may be repaired only by
trained electrical specialists.
8.3 Maintenance of the tool
Regular maintenance is necessary in order to ensure that
the tool remains ready for use when required. After a pre-
set number of operating hours, the operating status lamp
(green lamp) begins to blink. The tool may continue to
be operated for some time in this state. The tool will final-
ly switch itself off after the set service interval is exceed-
ed by more than 10%.
The tool must be serviced at an authorized Hilti service
center.
Repairs to the power tool and plug connector system
are subject to restrictions concerning electrical safety
and approval / explosion protection requirements and
may thus be carried out only by suitably trained spe-
cialists authorized by Hilti.
8.4 Checking the tool after care and maintenance
After care and maintenance work, the specified checks
and inspections must be carried out and documented
accordingly.
Tool status
The tool is not ready.
The tool is ready for operation.
The tool has overheated.
Fault in the tool or electric supply
voltage.
Servicing is due.
Cause / action required
No electric power.
See "Troubleshooting"
The tool has switched itself off.
The red lamp remains lit until the
tool has cooled down.
The tool does not restart automati-
cally after cooling down (switch
must be operated).
The tool has switched itself off.
See "Troubleshooting"
Have the tool serviced at a Hilti
service center.