Commercial Cafe grinders dont usually present any problems except if something is obviously broken, or if say, the auto on /off switch is not working....so basically you need to switch it on and test operation. If it works...it works.
Otherwise you can simply expect to do a bit (a lot) of cleaning because in most work situations, no one ever cleans a grinder. Just chuck the left overs in the grinder away, use a vacuum cleaner to suck it out, wipe with soft cloths, wash the hopper iin warm soapy water etc. etc.etc.
Dont be concerned with the state of the burrs. Most of the stuff that has been written in forums like this is just scare mongering. A set of burrs, depending on the type of coffee used and the adjustment as set up by the particular operator, should be good for somewhere over say 400 kilos give or take.....
Use it to make coffee. If the coffee is good, dont worry about the burrs. If the coffee is not good, and you think it is attributable to the burrs, change them.
If you are concerned than by all means get the burrs changed, then at a "domestic use" rate of say 300 grams coffee a week, at an arbitrary lifetime for the burrs of say 400 kilos, you wont need to worry about it again in the lifetime of the grinder at your home (because that equates to 1,333 weeks or 25.5 years *;) - use before they theoretically go blunt...).
first / original CS site sponsor.
PS please note however it is entirely overkill to buy this model grinder for home use and you will have trouble if you want to place it under overhead cupboards because of its height. The only reason for buying something like this for home use is if the price is cheap, and you have the space...Otherwise buy a macap M4 or a mini mazzer or a compak K whatever or some other good model but more appropriately sized grinder where the quality of the grind delivered is not in question.