User Guide

Document No. 129-335
Installation Instructions
June 22, 2005
Manual Override
For manual positioning, rotate the manual override handle
clockwise 180°, and squeeze it to latch around protruding stop.
See Figure 7.
NOTE: The actuator will automatically unlatch when power
is applied.
VE0986R1
01
01
Override
handle at
position 0.
Override
handle at
position 1.
Figure 7. Manual Override Handle Position.
When the manual override handle is at the "0" position, the
output shaft is retracted if the actuator is normally open, or
extended if normally closed. See Figure 8.
When the Manual Override handle is rotated to
position 1, the reverse is true. See Figure 9.
Start-Up
Check the wiring and the position indication.
EA0987R1
BA
B
A
(A) Allow handle to turn counterclockwise to retract spindle.
(B) Turn handle clockwise to extend spindle.
CAUTION:
To avoid damage to actuator, DO
NOT manually assist spring return.
Figure 8. Normally Open. (SFP Series).
EA0987R1
BA
B
A
NOTE:
The "0" and "1" position
markings are intended
for reference only and
not stroke
measurement.
(A) Allow handle to turn counterclockwise to extend spindle.
(B) Turn handle clockwise to retract spindle.
CAUTION:
To avoid damage to actuator, DO
NOT manually assist spring return.
Figure 9. Normally Closed (SFA Series).
Troubleshooting
Check the wiring for the proper connections.
References
Technical Instructions Document Number
SFA/SFP Electronic Valve Actuator 155-321P25
24 Vac or 120 Vac, 2-Position Control
Zone Valve Assemblies TB254 155-291
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