Instruction Manual
D103409X012
Maintenance and Troubleshooting
May 2013
110
Table 7‐3. Instrument Troubleshooting (Continued)
ActionPossible CauseSymptom
3b. Restricted pneumatic passages in I/P converter. 3j. Check screen in I/P converter supply port of the module base.
Replace if necessary. If passages in I/P converter restricted,
replace I/P converter.
3c. O‐ring(s) between I/P converter ass'y missing or hard
and flattened losing seal.
3k. Replace O‐ring(s).
3d. I/P converter ass'y damaged/corroded/clogged. 3l. Check for bent flapper, open coil (continuity), contamination,
staining, or dirty air supply. Coil resistance should be between
1680 ‐ 1860 ohms. Replace I/P assembly if damaged, corroded,
clogged, or open coil.
3e. I/P converter ass'y out of spec. 3m. I/P converter ass'y nozzle may have been adjusted. Verify
drive signal (55 to 80% for double‐acting; 60 to 85% for
single‐acting) with the valve off the stops. Replace I/P converter
assembly if drive signal is continuously high or low.
3f. Defective module base seal. 3n. Check module base seal for condition and position. If
necessary, replace seal.
3g. Defective relay. 3p. Depress relay beam at adjustment location in shroud, look
for increase in output pressure. Remove relay, inspect relay seal.
Replace relay seal or relay if I/P converter assembly is good and
air passages not blocked. Check relay adjustment.
3h. Defective 67CFR regulator, supply pressure gauge
jumps around.
3q. Replace 67CFR regulator.
4. ValveLink diagnostic tests
provide erroneous results.
4a. Defective pressure sensor. 4a. Replace PWB.
4b. Pressure sensor O‐ring missing. 4b. Replace O‐ring.
5. Field Communicator does
not turn on.
5a. Battery pack not charged. 5a. Charge battery pack.
Note: Battery pack can be charged while attached to the Field
communicator or separately. The Field Communicator is fully
operable while the battery pack is charging. Do not attempt to
charge the battery pack in a hazardous area.
To Next Page
Loading...
Need help?
General
