AMOT 10GEF, Operation And Maintenance Manual, Page: 70 / 80

70
Troubleshooting
Rev 12 – NOV 2019 OMMG00012
On Actuators with a
Positioner, Check status of
LED
Valve will not drive in
either direction
Check power supply
Check actuator motor
running
If motor running, replace
shear pin between valve and
actuator
If not running, ensure local
power supply is compatible
with nameplate voltage and
current rating.
Check if motor overheated Refer to “Motor overheating”
below
Check motor run capacitor Replace capacitor
Check Positioner Replace Positioner
Valve operates slowly Check mains voltage
matches rating plate
Incomplete travel Check limit switch setting Adjust
Check for obstructions in
valve
Clear obstructions
Check mechanical stops on
actuator
Adjust
Check setting of
Potentiometer (4.8.7, page
46)
Adjust position feedback
sensor
Check 4-20mA input
resistance (terminals 16 &
17)
If not 200 ohms, use
Configurator to check
incoming demand data
(OMM47962X00013).
Check data output from
Configurator on PC
If 2
nd
column % does not
match 4-20mA input, replace
Positioner
Motor overheating Check if valve is oscillating See “Valve is oscillating”
above
Check for obstructions in
valve
Clear obstructions
Check ambient temperature Reduce ambient temperature
Ensure local power supply is
compatible with nameplate
voltage and current rating.
Check electrical connections
Moisture/Condensation Check heater in actuator
connected
Connect heater