A Not Functioning Soap Dispenser Repaired
A German organization located nearby brought a soap dispenser for repair. According to the manager, someone donated these devices to this organization but when they got them here, most of them did not work properly.
The manager gave me once device to check out and see what I can do with it and later on he will bring me more to fix.
They run on four AA batteries as you can see in the photo but when I put some batteries there no indication of a life in it.
The part on the left is the sensor and will be activated with any motion nearby it and the part on the right is where the soap comes out of.
As I took the three screws at the corner of this device, I was able to see what inside it.
According the user manual, this LED light should be on when the batteries are installed and if you look closely, it was actually on. The question here is why the device is not operating according to specs?
I rotated the motor drum manually and it was jammed so I added a spray of contact cleaner through the two holes of the motors and then try to rotate again. I felt kind of resistance but after a turn or two, the motor was freely rotating the way it should be.
On the cover box there is a micro switch (not photographed) that sits on the three notches drum marked with three arrows showing the positions of the micro switch. The micro switch role is to control the drop of soap every time covers the sensor.
I put everything back together and covered the sensor with my hand. I could hear the motor rotating once which indicating a working soap dispenser.
This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.
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Note: You can check his previous repair articles in the link below: