Fisher FIELDVUE DVC6200 Instruction Manual page 110

Maintenance and Troubleshooting
May 2013
Table 7‐3. Instrument Troubleshooting (Continued)
Symptom
3b. Restricted pneumatic passages in I/P converter.
3c. O‐ring(s) between I/P converter ass'y missing or hard
and flattened losing seal.
3d. I/P converter ass'y damaged/corroded/clogged.
3e. I/P converter ass'y out of spec.
3f. Defective module base seal.
3g. Defective relay.
3h. Defective 67CFR regulator, supply pressure gauge
jumps around.
4. ValveLink diagnostic tests
4a. Defective pressure sensor.
provide erroneous results.
4b. Pressure sensor O‐ring missing.
5. Field Communicator does 5a. Battery pack not charged.
not turn on.
110
Possible Cause
Instruction Manual
Action
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.
3k. Replace O‐ring(s).
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.
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.
3n. Check module base seal for condition and position. If
necessary, replace seal.
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.
3q. Replace 67CFR regulator.
4a. Replace PWB.
4b. Replace O‐ring.
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.
D103409X012