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Little Giant 506065 - User Manual

Little Giant 506065
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WRSC-6 Wastewater Removal System Kits
OWNER'S MANUAL
English
EN
Wastewater Removal System Kits are designed to pump wastewater from laundry trays, washing
machines, sinks, or dehumidifiers. They are not designed to pump raw sewage, fluids other than water, or
fluids with solids. An inlet screen will remove many solids over 1/8” diameter, but large amounts of solids
can clog screen and result in pump failure.
Maximum fluid temperature is 125°F. The unit is designed to
fit under most sinks, so in many cases it is not necessary to
recess the unit into the floor. See pump manual for more
information.
This product is covered by a Limited Warranty for a period of
12 months from the date of original purchase by the
consumer. For complete warranty information, refer to www.LittleGiant.com
.
Specifications
SAFETY INSTRUCTIONS
Before Getting Started
This equipment should be installed and serviced by technically qualified personnel who are familiar with
the correct selection and use of appropriate tools, equipment, and procedures. Failure to comply with
national and local electrical and plumbing codes and within Little Giant recommendations may result in
electrical shock or fire hazard, unsatisfactory performance, or equipment failure.
Know the product’s application, limitations, and potential hazards. Read and follow instructions carefully to
avoid injury and property damage. Do not disassemble or repair unit unless described in this manual.
Failure to follow installation or operation procedures and all applicable codes may result in the following
hazards:
Model Volts HP Hertz Amps Watts Shut Off
WRSC-6
115 1/3 60 9/14.3 720 18 ft (5.5 m)
230 1/3 50/60 4.5/6.3 720 18 ft (5.5 m)
Risk of death, personal injury, or property damage due to explosion,
fire, or electric shock.
Do not use to pump flammable or explosive fluids such as gasoline, fuel oil, kerosene, etc.
Do not use in explosive atmospheres or hazardous locations as classified by the NEC, ANSI/NFPA70.
Do not handle a pump or pump motor with wet hands or when standing on a wet or damp surface, or in
water.
When a pump is in its application, do not touch the motor, pipes, or water until the unit is unplugged or
electrically disconnected.
If the power disconnect is out of sight, lock it in the open position and tag it to prevent unexpected appli-
cation of power.
If the disconnect panel is not accessible, contact the electric company to stop service.

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Questions and Answers

  • A
    Amy RoseAug 20, 2025
    What to do if Little Giant Water System pump runs but does not discharge liquid?
    • H
      Holly DixonAug 20, 2025
      If your Little Giant Water System pump runs but doesn't discharge liquid, it could be due to a few common issues. First, check if the check valve is installed backwards, ensuring the flow indicating arrow on the valve body points in the correct direction. The check valve might also be stuck or plugged, so remove it and inspect for proper operation. The lift might be too high for the pump, so check the rating table. Another possibility is that the inlet to the impeller is plugged; pull the pump and clean it. Lastly, the pump could be air locked; try shutting the power off for about a minute, then restart, repeating this several times. If your system includes a check valve, a 3/16” hole should be drilled in the discharge pipe approximately 2” above discharge connections.
  • J
    Judy DeanAug 29, 2025
    How to troubleshoot Little Giant Water System pump not delivering rated capacity?
    • L
      Lisa ReeseAug 29, 2025
      If your Little Giant Water System pump isn't delivering its rated capacity, several factors could be responsible. Check if the lift is too high for the pump and verify the rated pump performance. Low voltage could also be the culprit, so ensure the supply voltage matches the nameplate voltage. A clogged impeller or discharge pipe can restrict flow; pull the pump and clean it, and inspect the pipe for scale or corrosion. Lastly, impeller wear due to abrasives can reduce capacity; replace the worn impeller.
  • S
    silvatylerNov 8, 2025
    Why won't my Little Giant 506065 Water System pump shut off?
    • J
      Joseph MccoyNov 8, 2025
      If your Little Giant Water System pump won't shut off, it could be due to several reasons. It might be a diaphragm switch issue, in which case you should replace the switch. A weak or hardened rubber diaphragm can also cause this; consider replacing the rubber diaphragm. Another cause may be a plugged vent tube, so clear any obstructions. Dirt or sediment lodged around the rubber diaphragm can also keep the contacts closed; clean that area. The pump might be air locked; try shutting the power off for about a minute, then restart, repeating this several times. If your system has a check valve, drill a 3/16” hole in the discharge pipe about 2” above the discharge connections. If the liquid inflow matches the pump capacity, a larger pump may be needed. A defective switch can also be the probl...

Summary

Product Specifications

Safety Precautions and Warnings

Getting Started Safety Checks

Guidance for technically qualified personnel on proper installation and use.

Installation Guide and Procedures

Typical Installation Diagram

Visual guide and steps for setting up the wastewater removal system.

Optimal Pump Location

Guidelines for selecting the optimal placement for the pump unit.

Inlet Plumbing Connection

Instructions for connecting the water inlet to the basin cover.

Discharge Plumbing Connection

Steps for connecting the discharge pipe and check valve.

Vent Plumbing for Operation

Procedures for installing the vent pipe for proper switch operation.

Electrical Connection Safety

Guidance on connecting the pump to a power source safely and correctly.

Maintenance and Troubleshooting

Pump Operation Testing

Procedures to verify the pump's start and stop functionality.

Cleaning the Inlet Screen

Steps to clean the inlet screen for optimal performance.

Cleaning the Pump Basin

Instructions for cleaning the pump basin and reassembling components.

Cleaning the Pump Unit

Steps for disassembling, cleaning, and reassembling the pump.

Replacement Parts Identification

List of available parts and their order numbers for replacement.

System Troubleshooting Guide

Common problems, probable causes, and corrective actions for the pump.

Little Giant 506065 Specifications

General IconGeneral
Model506065
TypeSubmersible Utility Pump
Voltage115V
Cord Length10 ft
Housing MaterialThermoplastic
MaterialThermoplastic
Horsepower0.1 HP

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