Precision Digital PD6200 - Manual (Page 65)

Model PD6200 Analog Input Rate/Totalizer Instruction Manual
65
 If the backup pump is not able to keep up, and the level reaches
7000 gallons, relay #4 transfers and starts the main pump as
well.
 Relay #2 trips the High Level Alarm at 7500 gallons and resets at
6900 gallons.
 Relay #1 trips the Low Level Alarm at 495 gallons and resets at
750 gallons.