First of all, I think it's great that this forum exists and also exotic machines like the Quickmill fully automatic machines are treated here by you. I am currently in the process of making a Quickmill Acquaviva 05000A from 1994 (hopefully) fit again. Mechanically, after a gasket replacement and various new valves, the machine is almost ready for the next few years.
However, there is one problem that I have not been able to solve so far: When switching on the machine, the motor of the mill is constantly under a slight voltage (measured around 5V), which causes a humming noise. Because of this, the old connection cables were already badly worn and the sheathing was brittle.Even with new wiring, the problem persists.
In the course of troubleshooting I replaced all optocouplers, triacs and thyristors on the board, unfortunately without the hoped for success. The diodes for the motor control still work. Would you have an idea where I could look further? Unfortunately I didn't find a schematic for this board, but maybe someone knows this version of the control electronics.
I would be very happy about your answers.
David
Riens Middelhof
February 24, 2022 10:48 am
Unregistered
QUOTE (Dastas @ Sunday, 21. February 2021, 00:18 Uhr)
Hello all!
First of all, I think it's great that this forum exists and also exotic machines like the Quickmill fully automatic machines are covered here by you guys. I am currently working on the (hopefully) restoration of a 1994 Quickmill Acquaviva 05000A .Mechanically, after a gasket replacement and several new valves, the machine is almost ready for the coming years.
However, there is one problem that I have not been able to solve so far: When turning on the machine, the mill's motor is constantly under a slight voltage (measured around 5V), which causes a humming sound</br>. As a result, the old connecting cables were already very worn and the sheathing was brittle. Even with new wiring, the problem persists.
In the course of troubleshooting I replaced all optocouplers, triacs and thyristors on the circuit board, unfortunately without the hoped-for success. The diodes for the motor control are still working. Do you have an idea where I can look further? Unfortunately I have not found a schematic for this circuit board, but maybe someone knows this version of the control electronics.
I would be very happy with your answers.
David </br></br></br></br></br></br></br></br></br></br></br></br>
Hello,
In an old thread on koffiemachines.org I found your contribution about the mill of the QuickMill that keeps humming.
I have the same problem.
Did you still manage to fix this problem, and can you tell me how?
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