FSE Series Electric Actuator
Installation & Maintenance Manual
22
November 18, 2022
www.atcontrols.com
Engineering\documents\products\IOM\Iom08026.docx
TROUBLE SHOOTING
ON-OFF Controller
General
Issue
Possible Problem
Solution
Motor does not
operate or
overheats
a. Seating torque of valve is too high,
possibly from incorrect specification or
wear to valve seats from use.
b. Jammed valve or stuck seat.
c. Motor shaft or bearings are stuck.
d. Limit switch for spring released position
not tripping (with manual override).
e. Limit switch for spring released position
not tripping (without manual override).
a. Manually operate or check/replace the
valve.
b. Check for blockage or obstruction in
pipe/valve and remove.
c. Replace motor.
d. Operate actuator manually to spring
release position and adjust switches per
instructions if necessary.
e. Check for torque overload caused by the
valve.
Actuator
functions
normally but
motor is hot.
a. Actuator operates too frequently and is
exceeding duty cycle rating.
b. Torque overload caused by valve.
c. Wrong power supply.
a. Adjust the system to reduce frequency of
operation.
b. If new, check valve specifications. If after
in service, check valve seats and replace
if worn or damaged.
c. Check the power supply.
Valve does not
operate
electrically or
manually.
a. Actuator is not properly installed onto the
valve.
b. Torque of the valve is larger than the
torque of the actuator.
c. Cap screw on the cam is loose and
caused misaligned travel end positions.
d. OPEN and CLOSE end stop points of
actuator are not aligned with valve.
a. Refer to installation instructions.
b. Replace with new valve, or larger size
actuator.
c. Readjust the mechanical end stops and
limit switches per instructions.
d. Remove the actuator from the valve and
reassemble ensuring the OPEN and
CLOSE stop points are aligned. Fail
direction must be accounted for.
Capacitor is
failed
a. PCB failed.
a. Replace
