Fluid Components International FR73B Manual Troubleshooting User Manual
Page 3
Doc. No. 06EN003281 Rev. -
5 - 3
Model FR78B Flow Switch/Monitor
CHAPTER 5 - TROUBLESHOOTING
FLUID COMPONENTS INTL
If an open circuit exists for one RTD and a value of twice the resistance exists for the other RTD, then there is
probably a miswiring or mislabeling problem.
After replacing the flow element, it will be necessary to follow the set point adjustment procedures found in the
Operation chapter before returning the instrument to service.
If the flow element resistance is correct, proceed to the voltage verification test.
Verification of Flow Element Voltage
If the above resistance checks are good, plug in the control circuit and apply power. Measure the voltages in
Tables 5-2. If the voltages are not correct, then remove and replace the control circuit.
Table 5-2. Flow Element Voltages
Spares
FCI recommends that one control circuit be kept as a spare. Check the Order Information Sheet that was filled out
at the time of order for the correct part and dash number. Contact FCI for specific recommendations.
Defective Parts
Before returning any equipment to FCI, obtain an return authorization (RA) number for authorization, tracking,
and repair/replacement instructions. If a return is required, remove the defective part or instrument, replace it
with a spare, calibrate, and then return the defective part or instrument to FCI freight prepaid for disposition.
Customer Service
1.
In the event of problems or inquiries regarding the instrument, please contact the Regional or Country
Authorized FCI Field Agent. There is an extensive list of these representatives at the front of this manual.
2.
Before contacting the FCI representative, be sure that all the applicable information is near so that a more
effective, efficient and timely response may be provided.
3.
Refer to Appendix C for specific Customer Service policy provisions.
**Voltages are dependent on temperature.
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