Novar Savvy Service Manual - page 12
12
DOC. #TD-0240 11/30/06
Savvy
®
Service Manual
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Determine the input number and meter the
appropriate terminals at the
or IOM
with the wires connected.
Is 24 VDC present?
Savvy
Analog Sensor Faults
Troubleshooting Chart
Take a milliamp reading at the terminal strip
using the procedure provided in this manual.
Is the reading within the 4- to 20-milliamp range?
Remove the sensor wires from the
terminal strip and meter the terminals.
Is 24 VDC present?
Replace the
using the
procedure provided in this
manual and make sure the
replacement operates
properly.
Savvy
Reconnect the wires at the
or IOM and meter the
sensor’s terminal.
Is 24 VDC present?
Savvy
The sensor or the wire is shorted.
Reconnect the wire. Remove the
wire from the sensor and meter
the wire.
Is 24 VDC present?
The input is bad. Replace the
using the procedure provided
in this manual and make sure the
replacement operates properly.
Savvy
The sensor is shorted. Replace it
and make sure the replacement
operates properly.
The wire is shorted.
Trace and repair it.
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YES
Replace the sensor and
make sure the replacement
operates properly.
Refer to the Savvy Baseplate
Installation Instructions.
The wire is open.
Trace and repair it.
Check the polarity.
Is it correct?
Revers the
connections.