Flameless Explosion Venting Device
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FLEX
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35
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7.2.2 FLEX SERVICE IN THE EVENT OF D AM AGE TO T HE MEMBR ANE
In the event that the maintenance or the service reveals any damage to the membrane but
no explosion occurs, the membrane must be replaced. The procedure is similar to the
procedure detailed in the previous chapter (7.2.1), but there is no need to change the flame
filter(s) of FLEX.
1) In the event of damage to the membrane, FLEX must be dismounted from the
equipment. This is possible only if the entire technology is shut down and therefore
there is no explosion hazard.
2) Then remove the old membrane from the FLEX and check whether FLEX was not
polluted during this process; pay particular attention to the meshes in its flame filter. If
so, remove the dirt. If it is not possible, the flame filter(s) must also be replaced;
proceed according to chapter 7.2.1 as though there was an explosion.
3) A new membrane (a spare part from the supplier) can be sealed from the bottom
using suitable silicone sealant to this prepared FLEX. The identical flange gasket
supplied by the company RSBP spol. s r.o. can also be used; the gasket is commonly
used between the membrane and the flange on the technology. Please note that the
membrane must face with the signalling device towards the FLEX entry and the
signalling device must be wired properly.
4) Further installation is identical with the new FLEX, i.e. the same as the procedure
detailed in chapter 4.
