Unit shall be powered through an on-off-remote circuit controlled by a three-position switch. In the remote switch position, the unit shall accept a remote run signal. Unit is powered in the ON position.
Unit shall accept a 4-20 mA analog signal to pace the polymer metering pump. This signal shall be processed by a pump controller that may be mounted remotely. The controller shall have LCD readout of pumping strokes per minute (or hour), a stroke frequency push pad for local pump control and an internal off external circuit for pacing signal selection.
Unit shall have a dilution water loss of flow sensor which, sensing that water flow has been interrupted for any reason, will place the polymer pump on standby and will restart it automatically when flow is restored. An integral timer shall monitor loss of flow and energize contacts indicating alarm after 15 seconds of continuous loss.
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