OPW M2010-EU, Installation Manual, Page: 82 / 149

If the controller does not sense the alarm conditions simulated by these tests, look to see if the thresholds and
alarms are correctly programmed in the system. A sensor or wiring fault will cause a system alarm. Do a
continuity test in the wiring and junction boxes. Make sure there is continuity with no short circuits.
Clean the Hydrocarbon Sensor of the Device
If it is necessary to clean hydrocarbon contamination from the sensor after a test or actual use:
l
Make sure the sensor is disconnected.
l
Put the dirty part of the sensor fully into
denatured alcohol
for one (1) hour.
l
Flush the sensor with water to remove all remaining contamination.
l
Let the sensor dry in the air for one (1) hour.
l
Reconnect the sensor.
NOTE:
If the sensor does not return to near its original resistance after you do a functional test
or contamination has been removed, it is recommended to replace the sensor.
Doc. No.: M2010-EU Rev.: 13
Page 82 of 149