OPERATION OF THE MCPS - Contd.
Liqht Set, Type II. The light set is filtered and screened
for electro-magnetic interference reduction. The luminaires are totally enclosed and waterproof with an integral thermal
circuit breaker that prevents damage to the ballast due to overheating. The light set will operate on 110 Volt AC, 50/60
Hertz. The luminaires are suspended from the purlins with straps. The lights will operate in a series (up to 12) even if one
light fails. A polycarbonate filter that slides over the luminaire and reduces light intensity during blackout conditions is
provided with each light set. The filter also aids in rapid night vision adaptation when exiting during darkness. The filter
can be rotated to aim a strip of unfiltered light onto mapboards or other desired areas. A spare fuse is located in the
female cable assembly end cap of each luminaire, and a spare lamp and fuseholder are located in the storage container.
Mapboard Assembly. Two or more of the four mapboards furnished with the MCPS can be joined together by
aligning the complexers of one or more mapboard assemblies and snapping them together.