SELECTION OF CLEANING PLANT.
Renovators 179
Hose 182
Pipe Lines 182
Separators 182
Vacuum Producers 183
Control 183
Selection of Appliances for Four Classes of Work 184
CLASS 1.--Plant for Residence or Small Office or Departmental
Building, to be Not More than One-Sweeper Capacity.
CLASS 2.--Large Office or Departmental Building Where Carpet
Cleaning is Important and Pipe Lines are of Reasonable Length.
CLASS 3.--Large Building or Group of Buildings Where Carpet
Cleaning is Important and Long Lines of Piping are Necessary.
CLASS 4.--Large or Small Plant Where Carpet Cleaning is Not
an Important Function of the Cleaning System.