16
Check Heating Cable
• Visually check the heating cable for
damage.
• Verify that the heating cable has been
fastened to the spacers.
• Verify that the laying spacing has been
maintained and that the heating cable
has been kept away from expansion
joints, sharp edges, etc.
• Verify that the heating cable has been
installed at the correct depth.
• Visually check the connection leads for
correct installation.
Do a Layout Sketch
Record the layout of each circuit, with
particular reference to the position of the
connection leads.
Check the Installation
Perform an Insulation Resistance
Test
Carry out an insulation resistance test
on each circuit to detect any damage
that may have occurred during or after
installation. The resistance reading must
be greater than 100 M
Ω
Record the value
for each circuit on the Installation Test
Record.
Checks
Perform the following checks before ap-
plying the asphalt:
• Check for signs of heating cable dama-
ge.
• Check the spacing and below-surface
depth of the heating cable, if applicab-
le.
Insulation Resistance Test
It is advisable to perform an insulation
resistance test on all the heating circuits
immediately before asphalt pouring to
detect any damage which may have
occurred after installation. Record the in-
sulation resistance of each heating circuit
on the Installation Test Record.
Before commencing asphalt pouring, ask
the asphalt team to verify the insulation
resistance results, record the asphalt
temperature and sign the Installation Test
Record.
Asphalt Practice
Asphalt Practice
Although the EM-MI heating cables have
been designed specifi cally for this appli-
cation, they are not indestructible. The
asphalt working temperature must not
exceed 250°C. Avoid extreme mechanical
stresses.
After the Pour
After completion of all asphalt work,
perform an insulation resistance test and
record the values on the Installation Test
Record.
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