The plan from RW Elevator company is to start upgrading/installing the safety door edges on B's 1,2,3,4,5,& 8, starting with B3 on Thurs. 6/17, and finishing by Fri. 6/18. Plan on OOS (out of service) for "some" time during those 2 days. 
As can happen during mechanical work, schedules may change "some".
Patience, Burt