Flowserve AF-17 Electronic Positioner - Manual (Page 24)

24 AF-17 Electronic Positioner: Installation, Operation and Maintenance WCAIM2031
8.2 Symptom Table
Test Unit for Milliamp Input Positioner – Set R1 all the way toward the plus end. Adjust R2 for a 20 mA reading. Varying R1 will
now provide input signals between 4 and 20 milliamps.
Sympton Guidlines to Follow
8.2.1 Actuator will not operate in either direction 8.3.1, 8.3.2, 8.3.3, 8.3.4, 8.3.5, 8.3.6, 8.3.7,
[no sound from motor(s)]. 8.3.10
8.2.2 Actuator will not operate in either direction 8.3.2, 8.3.3, 8.3.4, 8.3.5, 8.3.6, 8.3.9, 8.3.10,
[humming or buzzing sound from motor(s)]. 8.3.11, 8.3.12
8.2.3 Actuator slowly moves in one direction on its own. 8.3.4
8.2.4 Actuator runs normally for 7° to 8° while coming off 8.3.4, 8.3.15
limit switch, then slows down or stops
[motor(s) hum or buzz].
8.2.5 Actuator oscillates intermittently or upon 8.3.2, 8.3.8, 8.3.13
reaching a new position.
8.2.6 Actuator runs slowly in one or both directions, . 8.3.2, 8.3.4, 8.3.9, 8.3.10, 8.3.11, 8.3.12
but otherwise operates normally
8.2.7 Actuator works intermittently. 8.3.2, 8.3.10, 8.3.12
8.2.8 Actuator runs normally in one direction but will not 8.3.2, 8.3.4, 8.3.7
operate in the other direction
[no hum or buzz from motor(s)].
8.2.9 Actuator will not move valve after a stop when signaled 8.3.14
to travel in same direction as previous command.
Flow Control Division
Worcester Controls
Figure 11