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Little Giant WRS-6 - User Manual

Little Giant WRS-6
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WRS-6 Wastewater Removal System Kits
OWNER'S MANUAL
English
EN
Wastewater Removal System Kits are designed to pump waste-
water from laundry trays, washing machines, sinks, or dehumidi-
fiers. 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
WRS-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 electri-
cally disconnected.
If the power disconnect is out of sight, lock it in the open position and tag it to prevent unexpected application of
power.
If the disconnect panel is not accessible, contact the electric company to stop service.

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Questions and Answers

  • J
    Jennifer PalmerAug 7, 2025
    Why is my Little Giant Water Pump running but not discharging liquid?
    • B
      Brent SuarezAug 7, 2025
      If your Little Giant Water Pump runs but doesn't discharge liquid, consider these possibilities: * The check valve might be installed backward. Ensure the flow indicating arrow on the check valve body points in the correct direction. * The check valve could be stuck or plugged. Remove the check valve to inspect its operation. * The lift might be too high for the pump. Check the rating table. * The inlet to the impeller might be plugged. Pull the pump and clean it. * The pump may be air locked. Try shutting the power off for about a minute, then restart. Repeat this several times. If your system has a check valve, drill a 3/16” hole in the discharge pipe approximately 2” above the discharge connections.
  • K
    Kevin TorresAug 18, 2025
    How to fix a Little Giant WRS-6 Water Pump that does not deliver rated capacity?
    • M
      marissa78Aug 18, 2025
      If your Little Giant Water Pump isn't delivering its rated capacity, here are a few things to check: * The lift might be too high for the pump. Verify the rated pump performance. * Low voltage could be causing the speed to be too slow. Ensure the supply voltage matches the nameplate voltage. * The impeller or discharge pipe may be clogged. Pull the pump and clean it, and inspect the pipe for scale or corrosion. * Impeller wear due to abrasives. Replace the worn impeller.
  • E
    Edward AndersonOct 28, 2025
    What to do if my Little Giant Water Pump won't shut off?
    • K
      Kathleen TurnerOct 28, 2025
      If your Little Giant Water Pump won't shut off, there are several potential causes: * The diaphragm switch may need replacement. * A weak or hardened rubber diaphragm may need replacement. * The vent tube could be plugged, requiring you to clear any obstructions. * Dirt or sediment might be lodged between the retainer ring and rubber diaphragm, requiring cleaning. * The pump may be air locked. Try shutting the power off for about a minute, then restart. Repeat this several times. If your system has a check valve, drill a 3/16” hole in the discharge pipe approximately 2” above the discharge connections. * The liquid inflow may match the pump's capacity, indicating a larger pump is needed. * The switch could be defective. Disconnect the switch and check with an ohmmeter. Open-...

Summary

Specifications

Safety Instructions

Before Getting Started

General safety precautions and warnings before operating the equipment.

Installation

Typical Installation

Overview of the general installation layout and components.

Inlet Plumbing

Instructions for connecting the inlet pipe to the basin cover fitting.

Discharge Plumbing

Guidelines for connecting the discharge pipe and check valve.

Vent Plumbing

Instructions for installing the vent pipe for proper switch operation.

Electrical Connections

Guidelines for safely connecting the pump to the power source.

Maintenance

Operation Testing

Procedures to test pump operation after installation or maintenance.

Cleaning the Basin Screen

Steps to clean the inlet screen for optimal performance.

Cleaning the Basin

Instructions for cleaning the pump basin.

Cleaning the Pump

Procedures for cleaning the pump components.

Replacement Parts

List of available replacement parts with order numbers.

Troubleshooting

Common problems and their corrective actions.

Little Giant WRS-6 Specifications

General IconGeneral
BrandLittle Giant
ModelWRS-6
CategoryWater Pump
LanguageEnglish

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