Separator: Centrifugal, dry, with bag or screen.
Vacuum Producer: Two impeller, rotary, alternate centrifugal fan. Capacity, 30 cu. ft. of free air per minute, 4 in. vacuum at producer.
Control: Automatic starter, operated by vacuum.
Size of motor: ¹⁄₂ to 1 H. P.
Class 2.
—Large office or departmental building where carpet cleaning is important and pipe lines are of reasonable length.
Renovators: See [list] given for “large volume” plant, [Chapter IV].
Hose: 1¹⁄₄-in. diameter.
Separator: Centrifugal, dry, with bag or screen.
Vacuum Producer: Two impeller, rotary. Capacity, 70 cu. ft. of free air per minute for each sweeper of plant capacity at 7 in. to 9 in. vacuum.