Figure 7-7.V-Notch Chlorinatortypical installation, 3 to 200 lb124 hr.
controls for semiautomatic operation (fig. 7-10). The
hydraulic type can be synchronized with pump
operation by means of a solenoid valve.
Motor-driven types of Hypochlorinators are made
fully automatic by use of a secondary electrical control
circuit actuated by a switch inserted in a disk or
compound-meter gearbox (fig. 7-11). This switch
closes momentarily each time a definite volume of
water passes through the meter, thus starting the
feeder. A timing element in the secondary circuit shuts
off the feeder after a predetermined, adjustable number
of feeder strokes. In the hydraulic type, the meter
actuates gears in a gearbox, which, in turn, controls
operation of a pilot valve in the water or air supply
operating the feeder. The dosage rate is controlled by
water flow through the meter, thus automatically
proportioning the treatment chemical. The opening
and closing frequency of the valve determines the
frequency of operation of the hypochlorinator.
Other types of Hypochlorinators available include
the Model S, manufactured by the Precision Chemical
Pump Corporation, The Model S Hypochlorinator is a