oneisall HM-02

Oneisall 2.5L Silent BPA-Free Cat Water Fountain User Manual

Model: HM-02

1. Introduction

Thank you for choosing the Oneisall 2.5L Silent BPA-Free Cat Water Fountain. This product is designed to provide your cat with fresh, clean, and continuously flowing water, encouraging better hydration and promoting overall health. Its silent operation and multi-layer filtration system ensure a peaceful environment and pure drinking water for your beloved pet.

Please read this manual carefully before use to ensure proper installation, operation, and maintenance. Keep this manual for future reference.

2. Safety Instructions

  • Ensure the power adapter and cable are kept dry. Do not immerse the adapter in water.
  • Always unplug the fountain before cleaning or performing any maintenance.
  • This product is for indoor use only.
  • Do not allow pets to chew on the power cord. If the cord is damaged, discontinue use immediately.
  • Keep out of reach of children.
  • Use only original Oneisall parts and accessories.
  • The fountain is made from non-toxic, BPA-free, food-grade plastic (ABS, PP) to ensure your pet's health.

3. Package Contents

Please check the package to ensure all items are present:

  • 1 x Oneisall Cat Water Fountain (Main Unit)
  • 1 x Water Pump
  • 1 x Power Cable (USB)
  • 1 x Replacement Filter
  • 1 x User Manual

4. Product Components

Familiarize yourself with the main parts of your Oneisall Cat Water Fountain:

  • Water Tank: Transparent reservoir with 2.5L capacity and water level indicators.
  • Top Tray: Features two circulating drinking trays for pets.
  • Filter Case: Holds the multi-layer filter.
  • Water Pump: Submersible pump for water circulation.
  • Filter: Multi-layer filtration system (cotton, activated carbon, ion-exchange resin).
  • LED Light: Integrated blue LED for water level monitoring.
Close-up of the transparent water tank of the Oneisall cat fountain, showing the minimum and maximum water level indicators and blue LED light.

Figure 4.1: Transparent water tank with level indicators and LED light.

Oneisall cat water fountain with 2.5L capacity and LED lighting.

Figure 4.2: Fountain highlighting 2.5L capacity and LED.

5. Assembly and Setup

  1. Unpack Components: Carefully remove all parts from the packaging.
  2. Rinse Components: Rinse the water tank, top tray, and pump thoroughly with water. Do not use soap on the pump.
  3. Install Filter: Place the multi-layer filter into the filter case. Ensure it is seated correctly.
  4. Assemble Pump: Connect the water pump to the tube extending from the top tray. Ensure a secure fit.
  5. Place Pump: Position the assembled pump and top tray into the water tank. The pump should be fully submerged when the tank is filled.
  6. Fill Water Tank: Fill the water tank with clean water up to the 'Max' line. Do not overfill. The transparent tank and LED light allow easy monitoring of the water level.
  7. Connect Power: Plug the USB power cable into the pump and then connect the adapter to a power outlet.
Hands demonstrating the removal of the filter case for cleaning the Oneisall cat water fountain.

Figure 5.1: Filter case removal for assembly or cleaning.

Diagram illustrating the multi-layer filtration system of the Oneisall cat water fountain, including cotton, activated carbon, and ion-exchange resin.

Figure 5.2: Multi-layer filtration system components.

6. Operation

Once assembled and plugged in, the fountain will start circulating water. The pump operates silently (below 30dB), ensuring it does not disturb your pet or your household.

  • The fountain provides fresh, flowing water, which is more appealing to cats than stagnant water in a bowl.
  • The 2.5L capacity ensures a continuous supply of fresh water for 6-10 days, depending on your cat's consumption and the number of pets.
  • Monitor the water level through the transparent tank. Refill when the water level approaches the 'Min' line. The integrated blue LED light makes it easy to check the water level even in low light conditions.
Two cats drinking from the Oneisall cat water fountain, highlighting the dual drinking trays.

Figure 6.1: Cats using the dual drinking trays.

A cat sleeping peacefully next to the Oneisall cat water fountain, illustrating its silent operation at 25dB.

Figure 6.2: Silent operation of the water pump.

7. Maintenance

Regular cleaning and filter replacement are crucial for maintaining water quality and extending the product's lifespan.

7.1 Cleaning the Fountain

  1. Unplug: Always unplug the fountain from the power outlet before cleaning.
  2. Disassemble: Remove the top tray and water pump from the tank.
  3. Empty Water: Discard any remaining water from the tank.
  4. Clean Components: Wash the water tank and top tray with mild soap and water. Rinse thoroughly to remove all soap residue.
  5. Clean Pump: Disassemble the pump (if possible, refer to pump instructions) and clean any debris or hair. Rinse the pump thoroughly with water only. Do not use soap on the pump.
  6. Dry: Ensure all components are completely dry before reassembly.

7.2 Filter Replacement

  • The multi-layer filter effectively removes hair, dust, impurities, and odors, ensuring clean and fresh water.
  • It is recommended to change the filter every 2 to 4 weeks, or more frequently if you have multiple pets or notice reduced water flow/quality.
  • To replace, remove the old filter from the filter case and insert a new one.
Diagram showing the multi-layer filtration system of the Oneisall cat fountain compared to an ordinary water bowl, emphasizing clean water.

Figure 7.1: Filtration system benefits.

8. Troubleshooting

  • Fountain not working / No water flow:
    • Check if the power adapter is properly plugged into the outlet and the cable is securely connected to the pump.
    • Ensure the water level is above the 'Min' line. The pump needs to be submerged to function.
    • Clean the pump. Hair or debris can clog the pump impeller. Disassemble and clean the pump thoroughly.
    • Prime the pump: If the pump is not drawing water after assembly, try detaching the pump from the tube, submerging it in water, and allowing it to run for a few seconds to expel any trapped air. Then reattach it to the tube while submerged.
  • Water flow is weak:
    • Check the water level and refill if necessary.
    • Clean the pump and filter. A clogged filter or pump can reduce water flow.
  • Fountain is noisy:
    • Ensure the water level is sufficient. Low water levels can cause the pump to make noise.
    • Clean the pump. Debris in the pump can cause vibrations and noise.
    • Ensure the fountain is placed on a flat, stable surface.
  • Water accumulating around the lid / leaking:
    • Ensure the top tray is correctly seated and aligned with the water tank.
    • Check for any cracks or damage to the components.
    • Avoid overfilling the water tank beyond the 'Max' line.

9. Specifications

Model Number HM-02
Color Black
Material Acrylonitrile Butadiene Styrene (ABS), Polypropylene (PP)
Dimensions (L x W x H) 23.8 cm x 16.8 cm x 14.5 cm
Capacity 2.5 Liters
Power Source Electric Cable (USB)
Power Consumption 1.5 W (approx. 1 kWh per month)
Noise Level Below 30 dB
Target Species Cat
Usage Environment Indoor
Special Features Illuminated (LED light), Transparent Water Tank, Dual Drinking Trays
Oneisall cat water fountain with 1.5W power consumption and eco-friendly design.

Figure 9.1: Low power consumption of 1.5W.

10. Warranty and Support

The Oneisall 2.5L Silent BPA-Free Cat Water Fountain comes with a 2-year manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.

For warranty claims, technical support, or any questions regarding your product, please contact Oneisall customer service. We offer 24/7 online customer support to assist you.

Please visit the official Oneisall website or refer to your purchase platform for contact details.

© 2026 Oneisall. All rights reserved.

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