{Collins} 30L-1 Band Switch Cleaning

Hello again to the list...Wonder if I can get some info on cleaning the 30L-1 Band Switch Contacts...First is it a good idea to clean it on a regular interval ? Secondly , it would appear to get to the actual contacts them selfs you would have to remove the switch ?? What would be the best way to clean it ??? Any and all info will be appreciated on this matter......
Thanks a lotCarl WB2PVY 

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