Xylem Rule 500 Manual De Instrucciones página 5

How Fully Automatic Bilge Pumps Work:
Rule Automatic bilge pumps eliminate the need
for a separate float switch to activate the pump.
Once power is supplied, starting and stopping is
completely automatic. The pump checks for water
every 2 ½ minutes by turning on for a second and
measuring load against the impeller. If water is
present, the pump remains on until the water is
removed. Thereafter the pump resumes its 2 ½
minute check cycle. The automatic pumps feature
two positive leads: an automatic (brown) and a
manual override (brown with a white stripe).
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