Fluid Components International GF90_GF92 - Manual (Page 71)

Doc. No. 06EN003229 Rev. H 67 GF Series Flow Meter Models GF90/GF92
FLUID COMPONENTS INTERNATIONAL LLC http://www.fluidcomponents.com
CAUTION: Only qualified personnel should attempt to test this instrument. The operator assumes all
responsibilities for safe practices while troubleshooting.
ALERT: The electronics contains electrostatic discharge (ESD) sensitive devices. Use standard
ESD precautions when handling the electronics. See Chapter 3, Installation for ESD
details.
In new or re-calibrated instruments, operating problems are most often caused by an improper
installation. Review the information on instrument installation in Chapter 3 to verify correct
mechanical and electrical installation.
Troubleshooting is more effective if the operation of the equipment is understood before trying to solve
the equipment problems. Be familiar with the way the instrument operates (Chapter 4) before
troubleshooting an instrument that does not function properly.
Replacement parts must be of the same part type and number. Therefore, contact the FCI Customer
Service Department for the correct replacement parts.
Damage to the equipment due to negligence or lack of technician skill is not covered by the warranty,
or is damage to flow transmitter caused by part replacement in the field. When parts are replaced, the
verification and calibration procedures should be performed by a qualified technician to ensure the
accuracy and calibration of the instrument.
Digital Multi-Meter (DMM) (at least 4 1/2 digits resolution recommended) capable of measuring
ohms, milliamperes, and volts AC and DC.
Precision decade resistance boxes (two needed, however they are optional).
At this point simply observe the system setup to verify operation. Use Table 9 as a quick check of
problems and solutions. More in-depth discussions follow this table.
Table 9. Quick Check Troubleshooting
6. Troubleshooting
Introduction
Troubleshooting
Equipment
Quick
Troubleshooting
PROBLEM SOLUTION
No Display
Check the fuses.
Verify S1 is switched to the correct input voltage.
Verify correct power is applied.
No Display or
Dim Display Adjust potentiometer R1 on the top circuit board. If there is a change
in the display, return the potentiometer to the original setting.
Display is Locked Up
Press HOME and then 1 to return to normal operation. Reset the
flowmeter by cycling power.
Reading Seems
Incorrect
Verify the serial number of the flow element and the flow transmitter
are the same number.
Verify the flat on the flow element is parallel to the pipe and the flow
arrow is pointed in the direction of flow.
Verify all jacks and plugs are firmly seated and the wiring to them is
secure.
If the above solutions do not correct the problem, continue to use the rest of this chapter to
troubleshoot.