SR1128 operation manual
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7 Protection function
7.1. Memory protection
In case power failure occurs, controller keeps the parameter settings unchanged.
7.2 Screen protection
When no any press on button for 3 minutes, screen protection is activated automatically,
and then LCD lighting lamp is switched-off. Through press any button to light LCD lamp
again.
7.3 pump idling protection
Pump station monitors that no flow is in the circuit pipe within 3 minutes, then system pump
is ceased, "P1" blinks on the screen, through this function, pump is prevented from
damaging caused by pump idling.
˖reasons for no flow :
z leakage problem in the system circuit pipe.
z block occuring on the blade of digital flow counter
z Switch-off the power supplier of controller to exit circuit pump protection function,
recovery P1to standby status.
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