SECTION 5 TROUBLESHOOTING
In case of an inoperable or malfunctioning system the following
procedures can be used to isolate the faulty wiring, printed
circuit boards and/or alternate causes. The majority of repairs
can be made in the field thereby reducing the time a unit is out
The necessary documentation is contained within this manual with
the exception of the calibration data sheet for the turbine
flowmeter. This calibration is supplied with the turbine flowmeter.
Factory consultation is available to assist in diagnosing
problems. Please note that in some cases factory repairs can be
performed more easily than can be accomplished in the field.
Failure conditions are listed and the possible corrective actions
given to eliminate the observed problem.
Proper operation of the FLSC-18B can be assurned when with
power applied to the unit, the analog output produces a current
output signal of 4-20 mA with a span corresponding to that
established by the calibration procedure.
OBSERVED CONDITION CORRECTIVE ACTION
A. Analog Output 1. Noise on input. Slowly turn
With No Flow SENS pot CCW until false
NOTE: In fully CCW position
the unit will not operate.
2. Replace pickup coil
3. Defective FLSC-186, repair or
B. Incorrect Zero Reading 1. Verify that power supply
With No Flow voltage is sufficient for the
required load resistance,
2. Unit is out of calibration - re
3. Defective FLSC-18B, repair or
C. Current Exceeds 1 . Flowmeter being used beyond
Desired Span calibrated span of FLSC-18B
2. Calibration of FLSC-18B in
3. Defective unit, repair or re