Principles and conditions of modernization
2
Limitations on the collective Ex detector family
2.5
Limitations on the collective Ex detector family
WARNING
Replacing an intrinsically safe point detector in an area at risk of explosion
Risk of explosion
●
Before replacing the point detector, carry out all necessary safety calculations
and safety assessments.
●
Document evidence of explosion protection.
●
Please take the information in document 001204 and in the technical manual
for the point detector, as well as national and internal regulations and
standards, into account.
When using a point detector FDOOT241-A9-Ex or OOH740-A9-Ex on a collective
Ex detector line, you must observe the following points:
Only a stub topology is permitted for intrinsically safe collective Ex detector
lines and FDnet-Ex/C-NET-Ex detector lines. You will find more information in
documents 001204 and A6V10324618.
When using an AlgoRex point detector via an FDOOT241-A9-Ex or
OOH740-A9-Ex, the detector base must be replaced. Replace the AlgoRex
detector base with a detector base FDB20x.
Only one external alarm indicator can be connected to an individual point
detector. Only use alarm indicators FDAI9x-Ex. These external alarm indicators
are permitted for use in areas at risk of explosion.
13
Building Technologies
A6V10443621_a_en_--
Fire Safety
2014-09-01
