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User Guide
Hard cases of tracing
a. In case of a disrupted conductor of airembedded
cabled under a wooden floor: Do only use the high
voltage pulse to generate an acoustic signal at the
fault, do not overlay the DC voltage as you may
very likely start a fire underneath the wooden floor
covering.
In this way you will have to rely on acoustic
localization, that is your ears.
b. Twin cables / mats having a fault at or close to the
end terminal: The tracing signal will be live along
the entire cable length. You will have to rely on
acoustic localization.
Correction of fault
WARNING
Hazardous voltage on terminals. Keep hands
away from terminals and connected cable.
Once the fault has been located you will have to
remove the floor covering to make the fault accessible.
Take care to minimize the damage to the floor
covering.
Remove the burnt section of the cable so only
undamaged cable remains. Find a proper length
of heating cable which is of similar type and linear
resistance [Ω/m] as the installed cable.
26 | ©Danfoss | FEC | 2022.07
DEVItector™ II V2
c. Fault located underneath a permanent installation,
e.g. a room divider, a bath tub, etc. You will have to
rely on acoustic localization.
d. Unable to burn a carbon bridge; this may be
the case for a cable having silicone as primary
insulation. You will have to rely on acoustic
localization.
Splice the substitute cable to the installed cable
and seal with shrink fitting tube on all conductors
including the screen and seal the entire assembly with
shrinkfitting tube.
Applicable repair kits саn be found in Product
Catalogue, Data Sheets, etc.
BC421332622232fr-FR0101
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