With the AID system that goes with the 11880, I wouldn't be attempting such a job if I were job - it's very easy to damage it if you don't deal with it properly.
Having said that, given the maximum possible age of the printer, if you feel the wiper needs cleaning then there may be something wrong.
Also bear in mind that wiper blades wear - not just get dirty - and you will need to have them replaced eventually.
The printer is working perfectly; it just seemed odd that a feature that was user-serviceable (such as cleaning the wiper) now requires a service call.
What I'm hoping is that now there is no need for users to ever clean the wiper.
By the way, I've had one service call already (it turned out to be an issue with the replacement ink cartridges, not the printer), and Epson really stepped up the the plate. They could not have been more diligent and helpful and thorough. The tech they sent (from Epson, not Decision One) could not have been more knowledgeable.