Fluid Components International FLT Series Rack Mount - Manual (Page 30)

Doc. No. 06EN003250 Rev. N/C 5 - 1 FLT  Series FlexSwitch  Rack Mount
CHAPTER 5 - TROUBLESHOOTING FLUID COMPONENTS INTL
5. Troubleshooting
Warning: Only qualified personnel should attempt to test this instrument. The operator assumes all
responsibilities for safe practices while troubleshooting.
Introduction
In new or re-calibrated instruments, operating problems are most often caused by an improper installation. Review
the information on instrument installation in Chapter 2 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 3) 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 technical skill is not covered by the warranty, or is damage to
the control circuit 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.
Troubleshooting Equipment
Digital Multi-Meter (DMM) (at least 4 1/2 digits resolution recommended) capable of measuring ohms,
milliamperes, and volts AC and DC.
Non Maintenance Observations
At this point, observe the system setup to verify operation. No testing is required at this time. Perform the following
tasks:
Check Power
Verify that the power source is in accordance with the installation site specification. Also verify that the control
circuit power jumpers are in accordance with the specified power source.
Note: Power ON is indicated by the yellow LED on the control circuit.
Check the Instrument Installation
Verify that the sensing element is mounted properly.
Check the Serial Numbers
If the instrument is new, the serial numbers on the sensing element and control circuit must match.
Check for Moisture
Check for moisture on the sensing element (for normally dry conditions). Excess moisture buildup on the sensing
element causes for air or gas flow applications.
Moisture on the control circuit may cause intermittent operation.