Xylem IM123 R04 Explosion Proof Wastewater Pumps Listed Class 1, Groups C and D Hazardous Locations - Manual (Page 6)

6
TYPICAL FLOAT SWITCH PLACEMENT
The charts show the required switch quantities and the
function of each in a typical system.
Simplex System:
Three (3) floats are for: Pump OFF, Pump ON, Alarm
ON/OFF.
Four (4) floats are for: Guaranteed Pump Submergence
or 2nd Pump OFF, Pump OFF, Pump ON, Alarm ON/
OFF.
Duplex System:
Four (4) floats are for: Pumps OFF, Lead Pump ON, Lag
Pump ON, Alarm ON.
Five (5) floats are for: Guaranteed Pump Submergence
or 2nd Pump(s) OFF, Pump(s) OFF, Lead Pump ON, Lag
Pump On, Alarm ON.
The OFF float(s) is the lowest float and the Alarm will
always be the uppermost float.
Inlet
Alarm SW3
Pump On SW2
Pump Off SW1
Discharge
Optional
Guaranteed
Submergence
Float
Inlet
Alarm SW4
Lag Pump On
SW3
Pump Off
SW1
Discharge
Lead Pump On
SW2
Optional
Guaranteed
Submergence
Float
Simplex Duplex
ENGINEERING DATA
PUMP OPERATION
ENGINEERING DATA
Engineering data for specific models may be found in your catalog and on our website (address is on the cover).
Control panel wiring diagrams are shipped with the control panels. Please use the control panel drawings in conjunction with this instruction
manual to complete the wiring.
Minimum Submergence
Continuous
Duty
Fully Submerged
Maximum Fluid Temperature
Continuous
Operation
104º F 40º C
6" (15.3 cm)
6" (15.3 cm)
8" (20.3 cm) TURN ON LEVEL
WEIGHT
Single-Action Float Switch
"Typical" Installation
TYPICAL FLOAT SWITCH PLACEMENT