OPW M2010-EU, Руководство по установке

Страница: 107 / 149

Test the Hydrocarbon Vapor Sensor
CAUTION: Use caution to prevent dangerous conditions when you do work
in a hazardous area.
Make sure that the area has sufficient airflow when you do a test or remove
contamination from the sensor. Make sure there are no open flames or hot
surfaces near the work area.
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Put the sensor in the air space of a container half full with Mineral Spirits.
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Wait approximately 10 minutes. The test is satisfactory if an alarm condition or other event occurs. If the
test results are unsatisfactory, replace the sensor.
If the controller does not go into an alarm condition, look to see if the thresholds 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 Vapor Sensor
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Put the sensor fully into Denatured Alcohol for one (1) hour.
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Remove the sensor and let it dry in the air for one (1) hour.
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Reconnect the sensor.
NOTE:
If the sensor does not return to sufficient resistance, replace the sensor if necessary.
Doc. No.: M2010-EU Rev.: 13
Page 107 of 149