Installation; Risk Of Electrical Shock; Maintenance; Troubleshooting - Little Giant FLS-400 Manual

Before installation, check your local electrical and
plumbing codes. Proper safety precautions should be
followed as per OSHA requirements. These regulations
are for your safety.
1) Location:
The pump should be located on a solid level foundation.
a) Do not suspend pump from electrical cord.
b) Do not suspend pump from discharge pipe.
c) Keep pump inlet screen clear.
d) Pump can be suspended by pump handle
e) The pump piping and system must be protected
against freezing temperatures.
2)
WARNING

- RISK OF ELECTRICAL SHOCK

All connections must be made into a grounded outlet.
A ground fault interrupter (GFI) protected circuit is
recommended for use with any electrical appliance
operating in or near water.
If the pump is placed into the water while running, it
will air lock. This means that air is trapped in the pump,
preventing it from pumping water. To avoid this, always
Your pump has been built to give many years of
satisfactory service. No regular maintenance is required
since the pump is completely self lubricating. The
following routine checking procedure is recommended to
SYMPTOM
Motor does not run
Motor hums but flow is
reduced or absent
2

INSTALLATION

AIR LOCKING

MAINTENANCE

TROUBLESHOOTING

CAUSE
Blown fuse
Tripped circuit
Disconnected plug
Corroded plug
Tripped overload
Defective switch
Defective motor
Impeller jammed
Plugged check valve
Partially blocked strainer
Line leak
Worn impeller
Defective motor
Voltage drop
Make sure the lone voltage and frequency of the
electrical current supply match the specifications printed
on the pump nameplate. The ground terminal on the
plug is provided for your protection. Do not remove.
Plug the pump cord into a grounded service and
connect the discharge piping, your pump is then ready
for operation. If an extension cord must be used, refer
to NEC code for proper gauge size. An undersized
extension cord will cause damage to the pump and
motor.
3) Discharge Piping:
a) PVC or ABS adapters may be used to adapt to other
sizes of pipe.
b) We recommend that you not reduce the discharge
pipe size, use as large as possible.
c) Keep piping length to a minimum (extra length
increases friction losses).
place the pump in the water when it is off, and then plug
it in. If the pump does air lock, simply unplug it and then
plug it back in.
be carried out once a year and is especially important for
occasional use applications.
a) Check the power cords and electrical outlet for
damage or corrosion.
Replace fuse.
Reset circuit.
Re-connect plug.
Clean prongs.
Allow pump to cool, investigate cause (jammed impeller).
Replace switch.
Replace pump/repair.
Remove strainer and clean.
Remove valve, clean or replace.
Clean strainer.
Repair leak.
Replace impeller.
Replace pump, contact authorized service depot.
Correct voltage to match nameplate rating.
Use properly sized extension cord per NEC code.
REMEDY