After prolonged use, the foam rollers used in the AMS2 device may degrade and break apart. This may result in small pieces of foam being found on the disc and in the dispense bits. A spare set of rollers for the hopper are supplied with the instrument. If the issue persists then contact the technical support team and they can direct you to the best course of action.
If for any reason you need to return the AMS2 unit for repair, please ensure this is packed and sent back in the original shipping case. This will protect the instrument and reduce the possibility of any further issues or damage