BIA-DPC3 rev 5
Page 36
Normal demand
Liquid level in the water storage tank is lower than Probe 1 # (float switch A: Down level), control box will order single pump to
run; Liquid level reaches probe 4 # (float switch A: Up level), single pump stops running; control box will alternate double pumps
running automatically when liquid level varies from Probe 1# & Probe 4#, (Float Switch A: Down level Up level Down level)
Extra demand
when single pump is running, liquid level is still decreasing to Probe 2# (Float Switch B: Down level), control box will order
another pump to run simultaneously, until liquid level reaches Probe 4# (Float Switch A & B: Up level), double pumps will not
stop running;
Meanings of the messages & graphic shown on the LCD screen
