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- Turn the central unit off
- Add or move the sense cables
- Turn the central unit on (see paragraph III 1.)
- Check and modify the denomination of the cables in the MENU mode (see paragraph III 3.)
- Follow the procedure of test (see chapter IV)
2.4 Addition of a New Circuit of Sense Cables (Circuits n°2 and/or n°3)
If the maximum capacity of the existing circuit is reached (40 sense cables), it is necessary to install a
circuit of additional cables. That requires the addition of a connecting cable for the circuit.
When the circuit n°2 is used:
- Remove the existing shunt between 2A and 2B.
When the circuit n°3 is used:
- Remove the existing shunt between 3A and 3B.
Caution: A shunt between items 1 and 2 causes a dysfunction of the digital unit.
- For the installation of the sense cables refer to chapter II
- Turn the central unit on
- Use the MENU mode to name the cables
- Follow the TEST procedure
3. TROUBLE SHOOTING GUIDE
During the test, the posted overall length not corresponding to that installed:
There is a cable damaged on the circuit. If one of wire of detection (spiral wire) is cut, the length read
by the digital unit will be 15 meters whatever the real length of the sense cable. But, as soon as the
test is finished, a message of cable break indicates which the damaged sense cable is.
During the powering, the sense cables installed are not read:
To check the connection of the connecting cable FG-CLC on the connector block of
the digital unit. An inversion between the two couples red + black and green + white damages the
electronics of the first connected sense cable.
During the powering, the digital unit does not read one of the sense cables installed:
The identified sense cable is probably defective, as well as the connector of the previous sense cable.
Leak is detected but badly localised liquid:
The precision of the localization of a leak is + / - 1 meter. If a leak is not visible in this perimeter, pay
attention to the whole length of the cables. The leak cannot be on the cable upstream, or on the cable
downstream; each cable is managed in an autonomous way by a chip, placed in its connector on the
male end which makes them completely independent.
Message of cable break:
The display indicates the localization of a fault. Check the connections of the sense cable. If the
localization is at the end of a loop, check the termination block FG-TMC. Check finally the state of the
sense cable over all its length to detect a cut or a shearing.
Cable break bus:
Check the connection between the leader cable FG-CLC and the connector block on the FG-SYS
Digital Unit. A short-circuit between the red wire and the black wire can cause cable break alarm.
Message of leak which appears and which disappears regularly:
The message of leak does not remain permanently registered. The threshold of contamination of the
sense cable is not reached. Either there is a small leak (insufficient to set off the alarm), or the cable
is polluted (dirtiness, painting, grease, bituminise...).
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