©Copyright 2013 Liberty Pumps Inc. All rights reserved
- 8 -
FLOAT SWITCH INSTALLATION
The engineering drawings will normally specify the levels for pump start and stop and high level alarm. If
they are not specified, these guidelines should be used to determine float switch locations.
PIGGY BACK SWITCH
(1-Float System)
Pump Off:
Factory set. (Float tether 3.5")
Pump On:
Factory set. (Float tether 3.5")
SIMPLEX PUMP STATION
(3-Float System)
Pump Off:
Level to top of motor housing.
Pump On:
Minimum 1-1/2 ft. above Pump Off Level.
High Level Alarm:
Minimum 1 ft. above pump ON level. Below influent pipe.
DUPLEX PUMP STATION
(4-Float System)
Pump Off:
Level to top of motor housing.
Lead Pump On: Minimum 1-1/2 ft. above Pump Off level.
Lag Pump On: Minimum 1 ft. above Lead Pump On level.
High Level Alarm:
Minimum 1 ft. above Lag Pump On level. Below influent pipe.
