Erratic pump breaks then dead pump on older 20L.

[RR777]

Been using a 20L. brewmeisater with the older style control box for years,
recently in the first stage of the mash it will run 3 pump breaks in half an hour,
then the pump stops running although the (pump)indicator light stays on.

Temperatures are well below 80c. , and readings agree with external thermometers.

My main issue is identifying if the fault is with the pump or the control unit,
swapping out parts can get expensive quick.



I've read almost the entire site over the last few days and not seen a similar issue,
but sorry if this is a common one i missed.

Cheers.

[johnrm]

Try reseating the pump connector at the back of the controller. While it's off check see if there is evidence of liquid/wort ingress.
Check pump rating, voltage and amperage, if 12v attach a suitable power supply, this will rule out pump.
You could test the output voltage output in manual mode.
If no output, it could be a relay in the controller.
Its most likely fixable.

[mashy]

This is very fixable & easily tested. I doubt its the controller.
The units built with the grey controller, are built like battleships not damp toilet paper.

I cannot recommend you follow this procedure, because you do need to pay attention, but here's how I would test it.

Before you start....
Stand the BM right way up & empty. Plugged in and 'ON'.
Remind yourself how to turn the pump on in manual mode. (press 'Manu' hold for 3 then use 'P')
Be careful with 'M' - DO NOT PRESS this with an empty machine!!
'M' turns the heating elements on - AND THEY MUST BE IMMERSED.

To test.
Tip the machine upside down
Split the pump. By undoing the large brass collar.
Before you do anything else. Lift out the magnetic impeller.
Be VERY careful with the impeller. If you drop this it will not necessarily break, but it won't ever work properly again. Members have proved this in the past.
Make sure all the tiny holes in the impeller are clean - 100%.
Put the impeller somewhere safe. Away from the BM & not on the floor
Now Press the 'P' button.

Does the 'P' light come on?
NO - The light signifies a controller issue - either the button or the relay.
YES - The 'P' light coming on signifies the controller is turning the pump on. But we need to Double check it.

Is the pin in the middle of the pump spinning?
YES - Reassemble. The pump needed a clean and probably the wires have re-seated
NO - Check the connection to the controller. It looks like a grey kettle plug.
If you cannot make the pump buzz or spin - You have found the problem – the pump. Double check it.

The double check
Remove the pump lead from the controller.
With simple multimeter check the voltage on the back of the controller. It should show Something in the range of 220/240 in the UK
YES - If the voltage is present you have confirmed the pump has failed.
NO - If the voltage reads 0 does the 'P' light come on
ON - controller issue - probably the relay. Remove controller and inspect.
OFF - controller issue - Remove controller & check the button, LED & whole board.

The most likely offender is the pump.
I seem to recall MINE is a Lowara E1-15/70B pump. Non specialist & available including shipping for below £100. **BUT MAKE SURE THIS IS THE CORRECT ONE FOR YOUR MACHINE **
ITT also make one.

Let me know how you get on !

[IPA]

I bought one of the first 20 litre automatic models. Before that they were manual. It was that long ago it came with a cloth grain filter. The pumps were a PITA . Even when I bought a 50 they were not much better. Thankfully Speidel have it sorted now. With the older pumps they would run but not pump. It's worth checking to see if that is your problem. Check by putting your hand on the pump if it is turning you will feel the vibration. Sometimes these faulty pumps also make a lot of noise but do not pump

[RR777]

Thanks all,

I bought it C.2012 and my brewing partner took it over when I lost my taste for Beer,
I replaced the impeller early on, and I know it is kept clean (inc.holes),
(although He hasn't been priming the pump before use!)*

@mashy exactly what I was hoping for when I posted,
a slight noise from the pump of "Hunting" pointed at the fault being there,
but I didn't know what type of control/feedback (if any) was being sent from the box
and maybe causing this.
Will let you know, and ask more after running your diagnostic.

Thanks again.

*Not sure of the importance of this,but was in my routine.

[IPA]

Thanks all,

I bought it C.2012 and my brewing partner took it over when I lost my taste for Beer,
I replaced the impeller early on, and I know it is kept clean (inc.holes),
(although He hasn't been priming the pump before use!)*

@mashy exactly what I was hoping for when I posted,
a slight noise from the pump of "Hunting" pointed at the fault being there,
but I didn't know what type of control/feedback (if any) was being sent from the box
and maybe causing this.
Will let you know, and ask more after running your diagnostic.

Thanks again.

*Not sure of the importance of this,but was in my routine.

That " hunting" noise you describe is exactly what happens when the impeller loses magnetism. The new model pumps are much much better and well worth the £100. You will need a product such as Eurolock to install a new pump because it HAS to be fitted at an angle facing downwards to prevent airlocks.

[mashy]

You will need a product such as Eurolock to install ....

Do you mean a thread sealant like Loctite ?

[RR777]

Hello again,
@mashy - followed your excellent procedure and the pump is the culprit.

It's a Laing E1vario-15/700B
6080E5002
ECM motor 3-9W

Any help on sourcing a replacement economically would be greatly appreciated,
thank you for all replies so far.

[IPA]

You will need a product such as Eurolock to install ....

Do you mean a thread sealant like Loctite ?

Yes it is similar but it works in 60 seconds. I am certain that Speidel use it. Also it is food safe. Google it.. it hardens when air is excluded.

[IPA]

Remember when replacing this pump you might need some adapters. Speidel suply these if you buy a pump from them.
And you will need Eurolock in order to instal the pump at the correct angle. I will post a link for it later today