Issues With Actuators And Solenoids; Actuator Failure; Actuator Leaks - EcoWater CHC Series Service And Troubleshooting Manual

5.5

Issues with Actuators and Solenoids-

5.5.1 Actuator Failure-

Most actuator failures are caused by the failure of the actuated valve. As the actuator is
removed for servicing, make sure the valve is easily opened and closed. Some valves can
become to difficult to move by the actuator and can cause actuator failure. Verify that the fuse
or breaker controlling the timer circuit is still functional, If the fuse and/or breaker is still good,
the failure could be related to the actuator itself, timer, relay and/or the conductivity controller.
Other than the ground there are normally three wires that pass to an actuated valve. A neutral
wire that normally goes to pin 1, and two power wires. If an actuator is not functioning verify
the following pins and if the signals are there, and the actuator is not moving then the actuator
must be replaced.
Signal
Neutral
Open
Close
Some of the actuators are 120 VAC while others may be 24VAC or 24VDC. It is important to
look at the nameplate to define what voltages you will be using for your troubleshooting. Use
your DVM and verify the signals coming into the actuator is the signal is present and the valve
does not open or close, replace the actuated valve.
If your actuated valve is operated by 24 VDC. Then you will see one ground wire and two
power wires. The power wires will reverse their voltage (wire 1= 24 VDC V+, and wire
2=0VDC V- when opening, and then wire 1= 0 VDC V- and wire 2=24 VDC V+ when
closing) normally controlled by a relay.
When ordering a replacement valve you must specify the valve size, and actuator type and
voltage. If the signal is not present refer to Issues with Conductivity Controller for further
information.

5.5.2 Actuator Leaks-

If the actuated valve is leaking (could be internal and if so, you will see a continuous flow down
the drain) than that is an indication that the solids that are being purged from the separator may
have damaged the seal on the actuated valve. In this case, replace the valve.
VSI Pin Jordan Pin
1 1
2 3
3 4
Apollo Pin Valcor Pin
1 1
3 2
4 3
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