or equivalent packaging during transport. Store the tool
safely.
CAUTION
Always remove the batteries before shipping the tool.
7.4 Hilti calibration service
We recommend that the tool is checked by the Hilti cal-
ibration service at regular intervals in order to verify its
en
reliability in accordance with standards and legal require-
ments.
Use can be made of the Hilti calibration service at any
time, but checking at least once a year is recommended.
8 Troubleshooting
Fault
The tool can't be switched on.
The tool can't calibrate itself.
The tool displays an electro-
magnetic interference warning.
The tool displays a temperature
warning.
No indication when positioned
over an object.
9 Disposal
Most of the materials from which Hilti tools or appliances are manufactured can be recycled. The materials must be
correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for taking
back old tools or appliances for recycling. Ask Hilti Customer Service or your Hilti representative for further information.
22
The calibration service provides confirmation that the
tool is in conformance, on the day it is tested, with the
specifications given in the operating instructions.
The tool will be readjusted if deviations from the man-
ufacturer's specification are found. After checking and
adjustment, a calibration sticker applied to the tool and
a calibration certificate provide written verification that
the tool operates in accordance with the manufacturer's
specification.
Calibration certificates are always required by companies
certified according to ISO 900x.
Your local Hilti Center or representative will be pleased
to provide further information.
Possible cause
The battery is exhausted.
The battery is inserted the wrong way
round (incorrect polarity).
The battery compartment is not
closed.
The tool is too close to metal objects.
The tool is too close to electromag-
netic interference.
The temperature is too high or too
low.
The ferrous / non-ferrous metal mode
is not active.
Remedy
Replace the battery.
Insert the battery correctly.
Close the battery compartment.
Switch the tool off and then hold it
at least 30 cm (12 in) away from any
metal objects and away from the sur-
face on which you are working before
switching it on again.
Keep the tool away from sources of
electromagnetic interference.
Observe the operating temperature
range (technical data).
Activate the desired detection mode.