Installation
Filter Blocked / System Fail Signal
With this option the DL250 will output a signal to alert the
user when the extractor has blocked filters.
This feature will not directly stop the extractor from running
correctly, but if fitted this feature should be terminated
correctly before power is applied to the DL250.
Connection specification
This signal is available via the Green and White cores of the
signal cable. The DL250 will provide a volt free Open /
Closed signal that can be connected to an external interface,
beacon or warning device. This should only be used on a
volt-free circuit.
Filter Signal
When the filters become blocked the connection between
the Green
& White cables will become “Closed”
When the extraction system is running normally the
connection between the Green & White cables will become
“Open”
EXTRACTOR
UNIT
Open/Closed circuit
given on condition of
filters/Unit
04
4