Buzzing sound from solenoid!!?

**winston77** · 8th May 2008, 12:55

Hi,

Any idea if the buzzing sound from a solenoid means anything?

So far... it seems like everything is still functioning fine...

Its a JBJ solenoid, working for past 3years.

Winston

**tawauboy** · 8th May 2008, 21:44

is there a nut to hold the solenoid to the valve? if yes, tighten it.
buzzing sound comes from 50 hz ac mains.

**winston77** · 9th May 2008, 13:19

Ok, will give that a try.

**|squee|** · 18th Jun 2012, 15:51

Sorry to bring up an extremely old topic, but since it has happened to me today I'd prefer to ask questions here.

Thomas (tawauboy), which nut do you mean? I guess it's the one on the left hand side in the first picture? This is a JBJ solenoid regulator set I purchased from NA years ago.

**felix_fx2** · 18th Jun 2012, 17:02

This is with the nut and valve taken apart.
The other side is for power, had seen it having some buzzing sounds emitting from there. Tightened connectors settled it.

**|squee|** · 19th Jun 2012, 14:24

So I just have to tighten the nut that is shown at the bottom left hand corner of your pic?

Do I need to turn off the solenoid/shut off the tank valve or anything?

**|squee|** · 19th Jun 2012, 19:20

Update: Just tightened the nut as mentioned above, buzzing sound gone. Thanks guys. Incidentally, why exactly does the nut being loose have to do with the buzzing sound?

**Shadow** · 19th Jun 2012, 19:30

It is due to the changing in magnetic field. It change the pole direction following the ac main, in our case 50Hz. This pole change will vibrate your untighten nut.

**|squee|** · 19th Jun 2012, 20:01

I see. Learnt something new today. Thanks!

**jellydot72** · 21st Jun 2012, 23:18

Ok now I know. Long time back local fish shop will place a small piece of paper into it and the sound gone. I guess it s to stop the vibration. Come to think of it. Sound is the effect of vibration isn't it.

**tawauboy** · 22nd Jun 2012, 22:22

yes. the buzzing sound is due to vibration.

**tawauboy** · 22nd Jun 2012, 22:26

Originally Posted by felix_fx2

This is with the nut and valve taken apart.
The other side is for power, had seen it having some buzzing sounds emitting from there. Tightened connectors settled it.

the serrated washer (ring with teeth) is supposed to help prevent the nut from coming loose. most likely, after the years of operation, the nut rotated sufficiently to become loose.