ADA 1150 Peristaltic Liquid Pump with Silicone Tubing not working

Hi team,

I just received two ADA 1150 Peristaltic Liquid Pump with Silicone Tubing last week.
Initially, I was thinking to setup a diffusion cell with circulating system.

However, before I could really get the pumps on the system, one of the pumps has stopped working.

I have taken a photo of the pumps for comparision. It was in the beginning stage when I just tried to circulate water through the tubes.

The good pump (left) gave good circulation with continuous flow but the broken pump did not show any.

With some physical inspections, the sound and rotation of both pumps are the same. The only difference I can see is the rotation of the rollers. Please see the photo below. When there was power supply, the roller in the peristaltic pump should be rotating but not for the broken pump (right) at this stage.

Please advise what the potential cause could be.

Thank you.


Hi Jeffrey,

It is possible that the motor shaft has become disconnected internally, is there anything on it that seems to have become uncliped?

Hi Clinton,

I just had a look on the pump and compare both of them. Everything is clipped.

The motor is working fine and the shaft is rotating.

Just had a talk with other colleagues, could it be the rollers inside?

As in the surface of rollers was worn by the friction of motor shaft, causing shaft and rollers are not intact enough to drive?

That’s the only thing we can think of as the motor is working fine.


Yeah, I suspect that is what has happened or that the drive gear has disconnected from the motor shaft. If you suspect the Pump has a manufacturing fault, reply to your original order confirmation and mention this post we can work out the best way to get you back on track.