ERICO 3000 ERITECH SYSTEM - Manual (Page 58)

INSTALLATION, OPERATION AND MAINTENANCE MANUAL
56
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8. Check that the Lightning Event Counter
(LEC) is secure, and that the display is
registering a reading, then record the
reading.
9. Record resistance and continuity
measurements using figure 38 and the
table on page 57.
These measurements should be performed
after a known strike to the terminal.
t
Remove the waterproofing mastic from
the lower termination to expose the
connection.
t
Disconnect the downconductor from the
grounding system.
t
If possible, disconnect the structure
ground bonding cable from the
grounding system.
t
Measure the ground resistance of the
lightning protection grounding system
and record in column 1 of ground
resistance readings.
t
Measure the ground resistance of the
structure and record in column 2 of
ground resistance readings.
t
Reconnect the structure ground bonding
cable to the lightning protection ground
system, then measure & record in
column 3 of ground resistance readings.
t
At the lower termination of the
downconductor, disconnect the
2.5 mm
2 (12 AWG) bonding wire
from under the hose clamp.
t
With a multimeter, measure the
continuity between the center
conductor and the copper screen of the
downconductor. (This should be greater
than 1,000 ohms).
Maintenance should be undertaken as
follows:
Do not attempt maintenance
during potential lightning
periods.
1. Check that the building is the same
physical shape and that no additional
structures such as antennae, advertising
signs, satellite dishes, building
maintenance units or similar have been
installed within 3 m (121 in.) height of
the ERITECH
® DYNASPHERE.
2. Inspect the ERITECH DYNASPHERE to
ensure that it is not dented or physically
damaged in any way.
3. Inspect the finial tip on top of the
ERITECH DYNASPHERE to ensure that
it is not excessively burnt, deformed or
missing. A finial tip must be replaced
if more than 6 mm (
1 /
4
in
.
) of the tip is
missing.
4. Check that the FRP mast and lower
mast assembly is securely attached
to the structure. Check that the guys
are secure and undamaged. Replace if
necessary. Check that all fastenings are
secure and tight.
5. If connected, check the structure
bonding cable from the upper
termination or mast base is securely
connected to the structural steel work.
6. Look for signs of damage to the
ERITECH ® ERICORE downconductor
(whether by lightning, careless handling,
vandalism or other causes). Check that
the downconductor is inaccessible to
people and machinery.
7. Check that all labels and signs are still
attached and clearly legible. These labels
MUST be in place. Refer to the section
on Labelling.