Grundfos pump rotation tester.

[Whyme]

I wonder if they work on alpha and Magna pumps, anyone tried?

They work on any pump that spins. apparantly theyve got a magnet in'em that spins when they pick up magnetic fields.. must be summat to do with the windings in the pump..!

 

[Roger Welton]

They work on any pump that spins. apparantly theyve got a magnet in'em that spins when they pick up magnetic fields.. must be summat to do with the windings in the pump..!

Yup the magnetic field generated by the stator rotates causing the rotor to rotate,

just my testier has to be in quite close proximity to the front of pump, not sure if it would be close enough with the electronics on front of alphas

 

[AmritPedersen]

its called a compass??

Nah, them's not kool.

Hum, must try the compass app on my phone. Will that wizz around, if so that would be too cool by far.

 

[villa_tom]

I had one, lasted about a day on my keys. It just fell apart from the chain and is now on the side of the road in birmingham somewhere :-(

 

[zzzjim]

its called a compass??

Love the idea,this may work,
(I 'll have to go exploring as my pumps under the lounge floor boards)

I had wondered if it sees the magnetic field ,if the rotor stalled,could the field still be moving ...! as seen from outside

 

[kimbo]

I had loads everyone was giving them away at one time, I was told they dont actually show the pump rotating they only detect the magnetic field produced by the windings, I almost got unstuck with one once, it was whizzing around in front of the pump and when I took the front screw of the pump off I found that the pump was seized solid so dont pin all your hopes on it.

 

[Whn1]

Quick update, finally got one last week put it on my keys and it fell apart today, never even got to use it. Thanks for shattering my dreams grundfos.

 

[plumber0808]

Quick update, finally got one last week put it on my keys and it fell apart today, never even got to use it. Thanks for shattering my dreams grundfos.

Haha, I had one put it in the van and never seen it again. I never even used it.

 

[Dannypipe]

I've got one, I actually find it quite handy!!

 

[Dannypipe]

I had one, lasted about a day on my keys. It just fell apart from the chain and is now on the side of the road in birmingham somewhere :-(

I took mine off the cheap chain it comes with and put it on directly to the van keys hoop.

 

[keltoyboy]

my firebird one fell off my keyring yesterday..... have a spare but to be honest its as useful as an ashtray on a motorbike!!!

 

[zzzjim]

It looks like it can tell you one and a half out of 3 things

a) You Do have power

b) The capacitor+windings MAY be OK

c) Should be spinning--but best-Check old way

 

[Dannypipe]

Yeah, it also tells you the direction the pump is spinning.

Its certainly not to be trusted completely but I find it a handy little thing. If it's noisy on site, and I can't hear the pump, I'll often whip out the keys, and put it to it.