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MANUAL SEWAGE EJECTOR PUMPS:
The pump cord for these pumps can be plugged directly into a
properly grounded receptacle with voltage consistent with pump
nameplate for continuous pump operation.
CAUTION: This type of operation should be used only for emer-
gency use or when a large volume of water is to be pumped.
Pump must not be allowed to run dry. If pump is run dry, it may
damage pump and void the warranty.
MAINTENANCE
If pump does not operate properly, consult the troubleshooting
chart. If trouble cannot be located with these steps shown, con-
sult your pump dealer or take pump to a Little Giant authorized
service center.
CAUTION: When working on pump or switch, always unplug
pump power cord in addition to removing fuse or shutting off cir-
cuit breaker before working on pump.
CLEANING IMPELLER AND VOLUTE
1. Remove screws that hold volute to motor housing.
2. Remove volute and clean impeller and volute passage. Do not
use strong solvents on impeller.
3. Be sure impeller turns freely after cleaning.
4. WARNING: DO NOT REMOVE IMPELLER. REMOVAL OF
IMPELLER REQUIRES SPECIAL TOOLS AND IS TO BE DONE
ONLY BY AN AUTHORIZED SERVICE CENTER.
DO NOT REMOVE MOTOR HOUSING COVER. WARRANTY
IS VOID IF MOTOR HOUSING COVER, IMPELLER OR SEALS
HAVE BEEN REMOVED.
ANY REPAIR ON MOTOR MUST BE DONE BY AN AUTHORIZED
LITTLE GIANT SERVICE CENTER.
SPECIFICATIONS
Discharge Size: 10E Series: 1-1/2" NPT Vertical
10S Series: 2" or 3" NPT Vertical
Intake Size:
10E Series: 3/4" Screened Opening
10S Series: 2" Diameter Opening
Pump Housing: Cast Iron
Volute:
Cast Iron
Screen:
10E Series: ABS
Impeller:
Vortex design, with pressure relief vanes
Motor:
Single phase induction, 1750 RPM, with auto-
matic reset thermal overload protection.
Hardware:
300 Series Stainless Steel
Bearing:
Double shielded ball
Pump Shaft Seal: Mechanical, spring loaded, stationary carbon
with Nitrile boot and rotating ceramic seat.
Power Cord:
16 AWG 3-conductor, copper, stranded
Cooling:
The motor housing contains a cooling oil to
provide cooling for the motor and to lubricate
bearings and seals. These pumps are capable
of operating with the motor housing partially
exposed for extended periods of time, provid-
ing sufficient motor cooling and bearing lubri-
cation. However, for the best cooling and lon-
gest motor life, the liquid level being pumped
should normally be above the top of the cast
iron motor housing.
INSTALLATION
Pump must be installed in a suitable gas-tight basin which is at
least 18" in diameter and 24" deep.
10S Series Sewage Pumps feature a 2" or 3" female NPT dis-
charge.
10E Series Effluent Pumps feature a 1-1/2" female NPT discharge.
Pump can be installed with ABS, PVC, polyethylene or galvanized
steel pipe. Proper adapters are required to connect plastic pipe
to pump.
Pump must be placed on a hard level surface. Never place pump
directly on clay, earth or gravel surfaces.
A check valve must be used in the discharge line to prevent back
flow of liquid into the basin. The check valve should be a free flow
valve that will easily pass solids.
CAUTION: For best performance of check valves, when handling
solids install in a horizontal position or at an angle or no more than
45°. Do not install check valve in a vertical position as solids may
settle in valve and prevent opening on start-up.
When a check valve is used, drill a relief hole (1/8" or 3/16" diam-
eter) in the discharge pipe. This hole should be located below
the floor line between the pump discharge and the check valve.
Unless such a relief hole is provided, the pump could "air lock"
and will not pump water even though it will run.
Check local electrical and building codes before installation. The
installation must be in accordance with their regulations as well as
the most recent National Electrical Code (NEC).
To conform to the National Electrical Code, all pumps must be
wired with 14 AWG or larger wire. For runs to 250', 14 AWG wire
is sufficient. For longer runs, consult a qualified electrician or the
factory.
Pump should be connected or wired to its own circuit with no
other outlets or equipment in the circuit line.Fuses and circuit
breaker should be of ample capacity in the electrical circuit. See
chart below.
HP
VOLTAGE
1/2
115
1/2
230
REMOTE FLOAT SWITCH LEVEL CONTROL
The RFS series pumps are equipped with a remote float switch
level control. This level control is sealed in a polypropylene float
cylinder. For automatic operation, the pump must be plugged
or wired into a remote float switch. Pump will run continuously if
plugged directly into an electrical outlet.
When the level rises in the basin, the cylinder floats up with the
level. When the cylinder position is at an angle of about 45° the
switch activates and starts the pump motor.
As the level draws down, the cylinder floats down and when it is
again at an angle of about 45°, the switch deactivates, and the
pump motor stops.
NOTE: BE CERTAIN PUMP IS SECURE IN BASIN AND CYLINDER
FLOATS UNOBSTRUCTED WITHOUT TOUCHING THE BASIN
WALLS OR PLUMBING.
REMOTE FLOAT SWITCH INSTALLATION
1. The float switch consists of three parts: switch, cord clamp,
clamp screw. NOTE: If screw is lost, use a #10-16 x 1/2" long
tapping screw.
2. Attach cord clamp to pump cover as shown in Figure 1. The
clamp must be positioned as shown to allow free operation of
float. Be sure to locate pump and switch power cords away
from switch float.
3. A 3-1/2" tether length is recommended. When a tether length
of 3-1/2" is used, a minimum basin diameter of 18" is recom-
mended. The tether length is measured as shown in Figure 1.
4. After desired tether length is established, hand-tighten
clamp screw.
WIRING
FUSE OR CIRCUIT BREAKER AMPS
20
15
3
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