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Section 6: Troubleshooting
February 2018
Section 6: Troubleshooting
CAUTION:
This actuator is non-intrusive. Do not open the control compartment on the actuator
unless absolutely necessary. It was sealed in dry-clean conditions in the factory and
entry into this compartment should not be necessary. Unauthorized entry could void
the warranty.
6.1
Troubleshooting Problems/Corrective Action
for Actuator Operation
Symptom
Motor will not Run
No Power available to Actuator Tripped Circuit Breaker
Handwheel Hard to Turn
Valve only opens or closes
partially with motor
Torque switch is properly set,
but actuator Torque's out in
mid-travel, open or closed
direction
Handwheel will not operate
valve
Motor runs but will not operate
the valve
If the LDM does not receive communication messages from the CCM within 5 seconds after power is applied
or loses communication for 5 seconds or more, it will display a flashing message "CCM LINK FAILED" and
blink all three LEDs.
72
All manuals and user guides at all-guides.com
Probable Cause
Blown Control Fuse
Open in Control Circuit
Insulation Resistance Breakdown in
Motor
Valve Stem improperly Lubricated
Actuator Lubrication has broken
down
Valve packing gland too tight
Drive Sleeve Bearing Failure
Jammed Valve
Torque Switch Setting too low
Limit Switch Improperly Set
Damaged or bent valve stem
Valve packing too tight
Jammed Valve (obstruction in line)
Handwheel shaft bearing assembly
malfunction
Sheared gear key or Stripped Gearing Replace as necessary
PS Shifter Position or Malfunction
Broken Handwheel Shaft
Broken Valve Stem or Stripped Stem
Nut
Motor Bearing Assembly Malfunction Repair or replace as necessary
Sheared gear key (fastener pin)
Stripped Gearing
Broken Valve Stem or Stripped Stem
Nut
Installation and Operation Manual
Corrective Action
Check Fuse and Replace as necessary
Refer to appropriate wiring diagram and check
for continuity
Perform Megger Test
Reset Circuit Breaker
Lubricate with Grease
Clean out old grease and replace with
recommended lubricant
Loosen packing gland nuts as necessary
Replace Bearing
Refer to Valve Maintenance
Check Setting and Reset if necessary
Check Switch Actuation and re-calibrate if
necessary
Refer to Valve Maintenance
Refer to Valve Maintenance
Refer to Valve Maintenance
Repair or replace as necessary
Replace Gear(s)
Repair or replace as necessary
Repair or replace as necessary
Replace
Replace
Repair or replace as necessary
E2K-405-0218 Rev. 2
Troubleshooting
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