Mechanical encoders get dirty just like Pots do. ?There is no problem with using a good quality cleaner that is intended for the purposes.? I would pick one that has some lubricating quality to it.? That will minimize the contact wear.? Caig Laboratories makes great products.? I use various concentrations of their Deoxit cleaner depending on what needs to be cleaned and how dirty it is.? I also use GC Electronics DE-OX-ID, which does a good job and is much less expensive than the Caig cleaners. ?I have been using both types for years with great results.? Just remember to use them sparingly.? You can always add more if needed.? Spray a little and work the encoder to see where you are.? It may take a little time and a couple of small squirts to get the results you want.
