Possessed Intermatic Valve Actuator

[Billrector]

I recently replaced a valve and have just added my Intermatic valve actuator back on. With the cover off of the actuator, I am able to adjust the cams to get the valve actuator to control the valve to precisely the right locations for both spa and pool. However, once I put on the cover, even if it is quite loose, the valve actuator will continue to turn the valve past the limit switch when going in the CCW direction. Once I remove the cover, everything returns to normal.

I have looked at this for hours trying to see if there is any interference and I simply can't figure out what is going on !!

 

[Bama Rambler]

Sounds like the cover is interfering with the micro switch or the cam ring. Is there anything in the cover that would interfere with either?

 

[Billrector]

Sounds like the cover is interfering with the micro switch or the cam ring. Is there anything in the cover that would interfere with either?

That is a logical assumption and one I thought of. However, I really don't see what could be hitting. There are two ribs on the inside of the cover and one is cracked. It appears to hit the nut that holds the cam rings on the shaft, but I can't get it to repeat by simply pushing on the shaft and cam rings. With the cover off it works perfectly. With the cover on even just slightly, it will not work correctly in the counter clockwise direction. There is nothing in the cover that a looks like it interferes with the switches directly.

 

[Bama Rambler]

It's not pressing on the wire or grommet when it's on is it? Could be shorting out the wires if it is, causing it not to see the switch open.

 

[Billrector]

It's not pressing on the wire or grommet when it's on is it? Could be shorting out the wires if it is, causing it not to see the switch open.

Its hard to say as you can't see inside to determine what it is hitting. Wires all seem okay though. I called Intermatic this morning and they are sending me a new one.