Switching off | Operation Manual C 2213 |
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5.3.2 Installation of safety blowdown valve
For each cylinder battery, one safety blowdown valve is necessary. The safety blowdown valve must be installed
which is either connected to a free connection point of the vacuum collective line or using a T-piece in the
metering line. It is quite reasonable to run the blowoff connection close to the gas sensor so that in the case
of malfunction an alarm signal can be released immediately. The integration of an activated-carbon cartridge
at the outlet of the safety blowdown valve avoids faulty alarms resulting from system-related temporary shock
pressures. It is advisable to use a PVC tubing for connecting the active-carbon cartridge. As soon as a chlorine
contact occurs the appearance of the tubing changes from transparent to milky thus signalling a leakage.
