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equi-interval maintenance programme
programme according to which the maintenance operations of luminaire cleaning, room surface cleaning and lamp replacement are scheduled to be carried out at equal time intervals
Note 1 to entry: Usually the time interval for the room surface cleaning is a multiple of the lamp replacement interval; the latter is in turn a multiple of the luminaire cleaning interval.
Note 2 to entry: This entry was numbered 17-394 in CIE S 017:2011.