CIAS Elettronica S.r.l.
Ed. 1.1
Installation Manual
Page
73
of
76
PYTHAGORAS 3
5.8 Final Checks
When the installation is complete make the following checks:
In
AND GATE mode
: check that crossing the barrier generates an intrusion alarm,
In
OR GATE mode
: check that there is an intrusion alarm when either the upper or lower
optical modules are blocked for longer than the Interruption Time.
Check the environmental discrimination circuit:
o
If in
OR GATE
mode change to
AND GATE mode
,
o
Check that the EDC led on the receiver comes on after 4 seconds if the infrared
beam emitted by the upper optical module is blocked.
o
Check that the alarm led on the receiver comes on if the infrared beam from the
lower optical module is blocked while the EDC led is still on,
o
Check that the EDC led on the receiver comes on after 4 seconds if the infrared
beam emitted by the lower optical module is blocked
o
Check that the alarm led on the receiver comes on if the infrared beam from the
upper optical module is blocked while the EDC led is still on,
o
Reset to
OR GATE mode
Receiver
Ensure that the covers are clean
Repeat all the final checks at least once every year, particularly the cleanliness of the
covers. It is recommended that the alignment voltage is noted at each visit so that any
degradation can be detected and corrected to avoid eventual false alarms.
