MEDAS MW1100-H-INOX

MEDAS 1.5HP 1100W 5020GPH Submersible Water Pump Instruction Manual

Model: MW1100-H-INOX

1. Introduction

This manual provides essential information for the safe and efficient operation of your MEDAS 1.5HP 1100W 5020GPH Submersible Water Pump. This high-performance pump is designed for various drainage applications, including swimming pools, garden tubs, ponds, and flooded basements. It features a powerful 1.5HP motor, delivering an impressive flow rate of 5020 GPH and a maximum lift height of 36 feet.

Please read this manual thoroughly before installation, operation, or maintenance to ensure proper use and to prevent damage or injury. Keep this manual for future reference.

2. Safety Information

Always observe the following safety precautions to reduce the risk of electric shock, fire, or injury.

  • Electrical Safety: Ensure the pump is connected to a properly grounded 110V AC outlet. Do not operate the pump with a damaged power cord or plug. Avoid using extension cords if possible; if necessary, use a heavy-duty outdoor-rated cord.
  • Water and Electricity: Never handle the pump or its plug with wet hands. Do not immerse the plug or power cord in water.
  • Placement: Position the pump on a stable, level surface. Ensure the pump is fully submerged in water during operation to prevent dry running, which can cause damage.
  • Children and Pets: Keep children and pets away from the pump and the area of operation.
  • Maintenance: Always disconnect the pump from the power supply before performing any maintenance, cleaning, or adjustments.
  • Intended Use: This pump is designed for pumping water. Do not use it for flammable liquids, corrosive chemicals, or highly viscous fluids.

3. Product Components

Familiarize yourself with the main parts of your MEDAS submersible water pump:

Diagram showing the carrying handle, float switch, and pump base of the MEDAS submersible water pump.

Image 3.1: Key components of the MEDAS pump, including the ergonomic carrying handle, automatic float switch, and the pump base designed for dirty water.

  • Carrying Handle: An ergonomic handle for easy transport and positioning of the pump.
  • Float Switch: An automatic sensor that controls the pump's on/off function based on water level.
  • Pump Base: Designed to allow solids up to 35 mm to pass through, making it suitable for dirty water applications.
  • Hose Fittings: Versatile fittings included to accommodate hoses of 1 inch, 1-1/2 inch, and 2 inch diameters.
  • Power Cord: A durable 36-foot power cord for convenient reach.

4. Setup

Follow these steps for initial setup:

  1. Choose Location: Place the pump on a firm, level surface in the area to be drained. Ensure it is fully submerged in water before operation.
  2. Connect Discharge Hose:
    Image showing the various hose fittings for the MEDAS pump.

    Image 4.1: The pump includes multiple hose fittings for different hose diameters.

    Select the appropriate hose fitting (1 inch, 1-1/2 inch, or 2 inch) for your discharge hose. Securely attach the fitting to the pump's outlet. Connect your discharge hose to the fitting, ensuring a tight seal to prevent leaks. Direct the hose to a suitable drainage area, away from the pump's location.
  3. Adjust Float Switch: The float switch automatically controls the pump. Adjust the float switch cable length to set the desired on/off water levels. A shorter cable means the pump will activate and deactivate within a smaller water level range.
  4. Electrical Connection: Plug the pump's power cord into a grounded 110V AC electrical outlet. Ensure the outlet is protected by a Ground Fault Circuit Interrupter (GFCI) for added safety.

5. Operating Instructions

The MEDAS submersible pump is designed for automatic operation via its float switch.

Diagram illustrating the automatic on/off function of the float switch based on water level.

Image 5.1: The float switch automatically turns the pump on when water rises and off when it falls.

  • Automatic Operation: Once plugged in and submerged, the pump will automatically turn on when the water level rises, causing the float switch to lift. It will turn off when the water level drops, causing the float switch to fall.
  • Monitoring: Periodically check the pump's operation to ensure it is functioning correctly and that the discharge hose is not blocked.
  • Dirty Water Handling: The pump is capable of handling dirty water containing solids up to 35 mm. However, avoid pumping excessively large debris or fibrous materials that could clog the impeller.
  • Preventing Dry Running: The float switch is designed to prevent dry running. Ensure the float switch is free to move and not obstructed by walls or debris.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your pump.

  • Disconnect Power: Always unplug the pump from the power source before any maintenance.
  • Clean Impeller and Housing: Periodically inspect the pump's intake and impeller area for debris, such as leaves, sand, or small stones. Clean any obstructions to maintain efficient flow.
  • Check Power Cord and Plug: Inspect the power cord and plug for any signs of damage, cuts, or fraying. Replace if damaged.
  • Storage: When not in use for extended periods, drain all water from the pump and store it in a dry, frost-free location.
  • Float Switch: Ensure the float switch moves freely and is not sticky or damaged.

7. Troubleshooting

Refer to this section for common issues and their solutions.

ProblemPossible CauseSolution
Pump does not startNo power; Float switch not activated; Impeller jammedCheck power connection and GFCI; Ensure float switch is free and lifted by water; Disconnect power and clear impeller.
Reduced flow rateClogged intake/impeller; Kinked or blocked discharge hoseDisconnect power and clean intake/impeller; Clear any obstructions in the hose.
Pump runs continuouslyFloat switch stuck in 'on' position; Water level not dropping enoughCheck float switch for obstructions; Ensure proper drainage and water level drop.
Pump cycles on/off too frequentlyFloat switch cable too short; Insufficient water volumeAdjust float switch cable length; Ensure adequate water level for stable operation.

8. Specifications

Technical details for the MEDAS 1.5HP 1100W 5020GPH Submersible Water Pump:

Diagram showing the product dimensions and key performance metrics like lift height, flow rate, and voltage.

Image 8.1: Product dimensions and performance specifications.

  • Model: MW1100-H-INOX
  • Power: 1.5 HP (1100W)
  • Voltage: 110V AC
  • Maximum Flow Rate: 5020 GPH (19000 Liters Per Hour)
  • Maximum Lift Height: 36 feet (11 meters)
  • Solids Handling: Up to 35 mm
  • Power Cord Length: 36 feet
  • Material: High-quality Plastic and Stainless Steel
  • Product Dimensions (L x W x H): 8.27" x 8.27" x 17.24"
  • Item Weight: 14 Pounds

9. Warranty and Support

For warranty information or technical support, please refer to the product packaging or contact MEDAS customer service directly. Keep your purchase receipt as proof of purchase.

© 2025 MEDAS. All rights reserved.

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