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Dover HEIL Command-SST - Page 254

Dover HEIL Command-SST
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Issued June 2020
Compressed Natural Gas (CNG) Option
Copyright 2020, Heil Environmental
Printed in U.S.A.
244
HEIL CNr
(CONTINUED)
Pressure Transducer Sensors
WARNING
ALL Pressure Transducer Sensors MUST be functioning
for System to be able to detect a leak.
WARNING
Tank MUST be empty before removing tank Pressure
Transducer Sensor.
Plugged directly into the live port of the valve of each tank
and behind the FMM (Fuel Management Module) box live
line, the pressure transducer sensors measure live
pressures of each tank and of the system. When a
pressure transducer sensor fails or becomes unplugged,
Diagnostic Display along with an audible alarm.
Whenever there is a single sensor issue, the main screen
will show which sensor has failed as shown in the figure to
the top right. However, if there are multiple sensor issues, it
will tell you to go to alarm summary screen to get more
details as shown in the figure to the bottom right.
NOTICE
The audible buzzer will be active regardless of ignition ON
or ignition OFF and will not turn OFF until the issue is
corrected.
Figure 80. Pressure Transducer
Sensor behind FMM
Unplugged/Faulty
Figure 81. Multiple Pressure
Transducer Sensors
Unplugged/Faulty

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