I just began a position as a studio associate in the art department of a small liberal arts college near Chicago. The photography professor and I are working together to try to perform routine maintenance on about ten Beseler 23cII and 23cIII enlargers in the darkroom.
Neither he nor I have ever performed this maintenance before, because historically the school would pay a technician to come in and do a routine tune-up on them every once-in-a-while. Enrollment in film photography classes has dropped some, though, and maintenance of these enlargers has been overlooked for a few years. Now we're calling around trying to find a technician to service them for us, but everyone who used to do it has either retired or discontinued that service, so we're trying to do it ourselves. We have some gaps in our knowledge, though, and we're hoping someone can help us learn the tools and best practices for maintaining these machines.
Here's what we (think we) know, followed by a few specific questions.
From the manual, I read that maintenance should include the following:
A - Lamp Replacement
B - Condenser Cleaning
C - Lubrication
D - Gear Replacement
E - Elevation lock replacement
F - The alignment should be checked and adjusted
Here are my questions:
1 - Is this a complete list?
2 - The photo professor seems to remember the technicians using some kind of vacuum to remove dust from inside the enlarger. Is this a thing? and if so, what kind of vacuum or tool is used for this?
3 - If anyone has serviced these machines before, do you have any tips or warnings about any of these procedures?
4 - Do you know anyone in the Chicago area who still does service visits on enlargers?
Thanks for your help!