Audio Desk Systeme - Vinyl Cleaner – Repair of Water Pump Failure


After the water pump of my beloved Vinyl Cleaner from Audio Desk Systeme stopped working I searched the web and found that I’m not the only one with this problem. But nowhere did I find a blog or post that would describe a repair procedure – other than to mail the machine back to Germany for an expensive repair.

If your machine is still under warranty you should of course send it back for warranty repair. But if your machine is out of warranty (like mine) and your only option is to spend lots of money to get it fixed, you might want to consider repairing it yourself.

The way the vinyl cleaner is designed does not allow any maintenance or replacement of any component located inside the machine without destroying something. The whole machine is glued together! Something I have not seen before to this extent – especially not on a high dollar item like this. Only the components in the upper compartment where the white cleaning rollers are located can be accessed thru the opening in the top cover.

To get started you need to separate the bottom PVC plate from the bottom of the tank. Both plates are glued together. I used a flat pry-bar to carefully separate the bottom plate without breaking it. Shining a flash light thru the water sight glass you can see the blue water pump thru the drain hole of the tank.

To get to the water pump you need to remove the bottom of the tank (or parts of it) which is glued to the recessed side walls.

Use a permanent marker to draw straight lines on the tank bottom – 5 mm inbound from the side walls. The PVC side walls are 5 mm thick. Try to cut slightly inside that line to not cut into the recessed side walls. I used a Dremel with a cut-off wheel.

Once the bottom of the tank is removed you have access to the water pump and all other internal components. To disconnect the pump wires from the main board you need to remove the front panel with on/off switch. Follow the pump cable from the tank and disconnect both wires from the terminal.

In my case it turned out that the pump actually did not fail - it was simply seized up. Once I rotated the little impeller by hand and hooked it up to the 24 V DC power supply in the sink it started to pump fine again.

In case you find your pump to be dead and need a replacement look for “Barwig Tauchpumpe Typ 3 24 V DC”. Price is around 18 EUR (appr. 20 USD) at amazon.de or conrad.com. Unfortunately I was not able to find a supplier who would ship to the U.S.. You may need to be creative – or plan your next vacation in Germany ...

If you use aquarium grade silicone adhesive instead of strong PVC adhesive to put it all together you will be able to undo everything easier in case you need to access the inside of the machine again. 

Feel free to email me if you have questions or need pictures.

Decibell

decibell
@decibell 
I've had a used unit fail on me - pump issues. I now own a Pro model.
Would you be able to send me the pictures and instructions on how to repair the unit, should this happen again?

If it does happen again, I will not be purchasing/exchanging for another unit. I will try to get it fixed.

Thank you and all the other posters for your very valuable repair advice. Much appreciated.
Jeff


mscardina's post on 9-20-2021 is spot on.  The idea of drilling the four corners is a great idea.  I used a drummel tool and cut a bit past each corner.  The little notches at each corner were the points that were hard to seal.

The next time I have to replace the pump, I'm going to move the pump outside the unit by running hoses to bulkhead connectors I'll place on the back of the unit.  It'll be ugly, but very convenient to swap pumps.  Right now I've done 120 records and all is well.
A little tip for cleaning the rollers.  I washed them with just a touch of laundry soap, gently washed, then thoroughly rinsed all four.  I dried them with paper towel, and then used a leaf blower to dry them and fluff them up.  They look brand new.  I suppose a blow dry would work, but I don't know if there is enough air flow to really fluff them up.  I also wash the filter with touch of laundry soap and rinsed, rinsed, rinsed.

H Decibell,

Thank you for all your very helpful information re the AD Pump Motor Fix. Alas, mine just died. Could I please request that you send me the pictures/ instructions for the repair. Also, do your pictures show the replacement pump name/ model # etc? Thank you again in advance for your helpful kindness. 

Sincerely, Scott Elsbree

selsbree@gmail.com

Two of my audio buddies are on their second Audio Desk cleaners as the first ones failed after cleaning maybe 50-100 records as the pumps failed. When they asked the dealer what was happening the response was "your lucky it lasted that long" and they would replace them for $1500 and get them a new one. Well they both did that and one is still working but with daily trepidation and the other one failed again after cleaning maybe 200 records. One of them replaced it with a non-ultrasonic record cleaner.

For the price of the Audio Desks they should not be failing like this and they should have a longer warranty. Maybe they knew it was a flawed design when it was introduced.