Troubleshooting Electrically Actuated Valves

Fault Finding in Electrically Actuated Valves can be slightly more difficult than pneumatically actuated valves. Electric actuators used to operate valves can either be direct mount or by bracket and drive dog. In most cases they are rotary 90 degree turn such as our electric 0M series. They can be on/off (power open/power close), modulating or spring return. In the below trouble shooting we only deal with on/of electric actuators which are by far the most common for valve actuation.

Problem Solution
Valve does not open
  • Check that actuator voltage is correct for supply and valve label complies.
  • Supply amperage must be sufficient to operate - especially for low voltages (12/24vDC)
  • Operate manual override on actuator to check function.
  • With butterfly valves check that the valve is aligned with the flanges and not binding. If necessary remove actuator and use spanner on valve to check if binding or jammed.
Valve does not close
  • Check that actuator voltage is correct for supply and valve label complies.
  • Supply amperage must be sufficient to operate - especially for low voltages (12/24vDC)
  • Operate manual override on actuator to check function.
  • With butterfly valves check that the valve is aligned with the flanges and not binding. If necessary remove actuator and use spanner on valve to check if binding or jammed.
Valve leaks slightly when first commissioned
  • Strip and clean valve seat and re-test.