KST – KROMSCHRÖDER SYSTEM TECHNOLOGY
18.104.22.168 Isolation of required safety devices
Required safety devices (e.g. pressure switches, relief valves, …) shall not be isolated from the equipment they protect during start-up or operation of the burner. In case isolating valves can not be avoided and are mounted between these required devices and the main lines, these isolating valves shall be locked in the open position during operation of the equipment by adequate means (e.g. manual lock, …).1) Operation with the isolation valves not in the fully open position shall not be possible.
The following chapters are printed with the permission of the DIN Deutsches Institut für Normung e.V. (German Institute for Standardization). For the implementation of the DIN Standard, the version with the most recent issue date is deemed authoritative. This is available from Beuth Verlag GmbH, Burggrafenstrasse 6, 10787 Berlin, Germany.
Our note on this Standard:
1) We recommend that the lever of the manual valve be removed and, if possible, locked.