Care And Maintenance; Service Indicator; Troubleshooting - Hilti TE 905-AVR Bedienungsanleitung

8. Care and maintenance

Unplug the supply cord from the mains socket.
8.1 Care of insert tools
Clean off dirt and dust deposits and protect your insert
tools from corrosion by wiping them from time to time
en
with an oil-soaked rag.
8.1.1 Regrinding insert tools
Pointed, flat and wide-flat chisels can be reground when
slightly worn at the tip or cutting edge.
-NOTE-
Avoid overheating the surface of the chisel during grind-
ing (no discoloration).
8.2 Care of the electric tool
-CAUTION-
Keep the power tool, especially its grip surfaces, clean
and free from oil and grease. Do not use cleaning agents
which contain silicone.
The outer casing of the tool is made from impactresis-
tant plastic. Sections of the grip are made from a syn-
thetic rubber material. Never operate the tool when the
ventilation slots are blocked. Clean the ventilation slots
carefully using a dry brush. Do not permit foreign objects
to enter the interior of the tool. Clean the outside of the
tool at regular intervals with a slightly damp cloth. Do not
use a spray, steam pressure cleaning equipment or run-
ning water for cleaning. This may negatively affect the
electrical safety of the tool.

9. Troubleshooting

Fault
The tool doesn't start
The power tool doesn't
start and the indicator
lamp blinks yellow
No hammering action
The tool does not achieve
full power
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Printed: 07.07.2013 | Doc-Nr: PUB / 5071242 / 000 / 00
Possible cause
Fault in mains supply
Supply cord or plug defective
On/off switch defective
The power tool has not been activated Use the activation key to activate the
(tools with optional theft protection
system)
The tool is too cold
Extension cord with inadequate cross Use an extension cord with adequate cross
section used

8.3 Service indicator

The tool is equipped with a service indicator.
8.3.1 The service indicator lights
The carbon brushes have reached the end of their life.
The tool can be operated for a further approx. ten hours
after the service indicator lights, after which the auto-
matic cut-out will be activated. Please return the tool to
a Hilti service center in good time so that it is ready for
use when required.
8.3.2 The service indicator blinks
An electrical fault has occurred.
The tool has been rendered inoperable and should be
returned to a Hilti repair center for servicing.
8.4 Maintenance
Check all external parts of the tool for damage at regular
intervals and check that all controls operate faultlessly.
Do not operate the tool if parts are damaged or when the
controls do not function faultlessly. If necessary, your
electric tool should be repaired at a Hilti repair center.
Repairs to the electrical section of the tool may be car-
ried out only by trained electrical specialists.
8.5 Checks after care and maintenance
After carrying out care and maintenance on the tool, check
that all protective equipment has been refitted and that
all items function faultlessly.
Remedy
Plug in another electric appliance and
check whether it works
The cord should be checked and, if neces-
sary, replaced by an electrical specialist
The cord should be checked and, if neces-
sary, replaced by an electrical specialist
power tool
Allow the tool to warm up to the minimum
operating temperature (see 7.4 "Chiseling")
section (see 6.2 "Use of extension cords")