Flowserve DFP17 - Manual (Page 29)

Figure 11
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.
WCAIM2037 DataFlo Digital Electronic Positioner DFP17 Installation, Operation and Maintenance Instructions 29
C. Install new circuit board onto the brackets using the
procedure in section B above in reverse order. Tighten
the mounting screws so that the grommets are about
half compressed. Note that 23 size 75 actuators use a
spacer in place of a grommet at the transformer
support bracket.
D. Make electrical connections per the appropriate wiring
diagrams (see section 3.0). Feed the three feedback pot
wires up through the hole in the board near TB-1 (see
Figure 2 on either page 6 or 7).
E. Calibrate the new circuit board per section 4.0.
Flow Control
Worcester Actuation Systems
SYMPTOM GUIDELINES TO FOLLOW
7.2.1 Actuator will not operate in either direction [no sound 7.3.1, 7.3.2, 7.3.3, 7.3.4, 7.3.5, 7.3.6, 7.3.7,
from motor(s)]. 7.3.10
7.2.2 Actuator will not operate in either direction [humming or 7.3.2, 7.3.3, 7.3.4, 7.3.5, 7.3.6, 7.3.9, 7.3.10,
buzzing sound from motor(s)]. 7.3.11, 7.3.12
7.2.3 Actuator slowly moves in one direction on its own. 7.3.4
7.2.4 Actuator runs normally for 7-8° while coming off limit 7.3.4, 7.3.15
switch, then slows down or stops [motor(s) hum or buzz].
7.2.5 Actuator oscillates intermittently or upon reaching a 7.3.2, 7.3.8, 7.3.13
new position.
7.2.6 Actuator runs slowly in one or both directions, but 7.3.2, 7.3.4, 7.3.9, 7.3.10, 7.3.11, 7.3.12
otherwise operates normally.
7.2.7 Actuator works intermittently. 7.3.2, 7.3.10, 7.3.12
7.2.8 Actuator runs normally in one direction but will not 7.3.2, 7.3.4, 7.3.7
operate in the other direction [no hum or buzz from
motor(s)].
7.2.9 Actuator will not move valve after a stop when signaled 7.3.14
to travel in same direction as previous command.
7.2 Symptom Table