31/10/2019
VACUUM LEAK DETECTOR
VLXE ..
- 39 -
8. Fault (Alarm)
8.1 Alarm description
If there is an alarm, it can be assumed that there is an explosive
steam-air mixture in the interstitial space. Take appropriate protective
measures.
(1) An alarm is indicated by the signal lamp lighting up; the acoustic
signal sounds, if one exists.
(2) If any exist, close shut-off cocks in the connection line between
the interstitial space and the leak detector.
(3) Stop acoustic signal, if any, by pressing the switch “Acoustic
alarm”.
(4) Contact the installation company.
(5) The installation company must determine the cause and rectify it.
IMPORTANT NOTE:
Do not depressurize interstitial spaces of
tanks with flexible leak protecting linings (layers coming togeth-
er).
(6) Repairs on the leak detector (e.g. replacement of components)
may only be performed outside the explosion hazard area or
suitable protective measures have to be taken.
(7) Perform functional check in accordance with 7.3.
8.2 Fault
In the case of a fault, only the red signal lamp lights up along with the
green signal lamp (yellow is off); at the same time, the audible signal
cannot be acknowledged.
8.3 Behavior
The different alarms can be used for various automated reactions
(e.g. switching off pumps).
Contact the installation company. They must find and eliminate the
error.
A functional check must be carried out after repair work.
Fault (Alarm)