1. Introduction
Thank you for choosing the oneisall PW03 Stainless Steel Cat Water Fountain. This automatic pet drinking fountain is designed to provide your cats with fresh, clean, and flowing water, encouraging them to drink more and stay hydrated. Constructed from premium 304 stainless steel, it offers durability and ease of cleaning, promoting a healthier drinking environment for your pets. Please read this manual carefully before use to ensure proper operation and maintenance.

Image: The oneisall PW03 Stainless Steel Cat Water Fountain, highlighting its 3.5L capacity, with two cats observing the flowing water.
2. Safety Information
- Ensure the power adapter and cable are kept away from water to prevent electrical hazards.
- Do not allow pets to chew on the power cord.
- Always unplug the fountain before cleaning or performing any maintenance.
- This appliance is for indoor use only.
- Supervise children to ensure they do not play with the appliance.
- Regularly inspect the power cord and pump for any damage. Discontinue use if damage is found.
3. Package Contents
Please check the package to ensure all components are present:
- 1 x Stainless Steel Fountain Body (3.5L capacity)
- 1 x Stainless Steel Top Tray
- 1 x Water Pump
- 3 x Filter Sets (each set includes a carbon filter and a sponge filter)
- 1 x Power Adapter
- 1 x Instruction Manual
4. Product Components
Familiarize yourself with the main parts of your oneisall PW03 water fountain:

Image: An exploded view illustrating the individual components of the oneisall PW03 cat water fountain, such as the main reservoir, pump, filter tray, and top stainless steel bowl.
- Stainless Steel Top Tray
- Filter Tray
- Carbon Filter
- Sponge Filter
- Water Pump
- Stainless Steel Fountain Body
- Water Level Window
5. Setup Instructions
Follow these steps to assemble your water fountain:
- Rinse Components: Thoroughly rinse all parts of the fountain (stainless steel body, top tray, filter tray, and pump) with water before first use.
- Install Pump: Place the water pump into the designated area at the bottom of the stainless steel fountain body. Ensure the suction cups firmly attach the pump to the base.
- Insert Filters: Place the sponge filter into the filter tray, followed by the carbon filter. Ensure they are seated correctly.
- Place Filter Tray: Position the filter tray over the pump, ensuring the pump's nozzle aligns with the opening in the filter tray.
- Add Water: Fill the stainless steel fountain body with clean water up to the MAX fill line. Do not overfill.
- Place Top Tray: Carefully place the stainless steel top tray onto the fountain body, ensuring it is securely seated.
- Connect Power: Connect the power adapter to the fountain's power cable, then plug the adapter into a standard electrical outlet.

Image: A visual guide demonstrating the straightforward assembly process of the oneisall PW03 cat water fountain.
6. Operating Instructions
Once assembled and plugged in, the fountain will begin circulating water. The oneisall PW03 is designed for continuous, quiet operation.
- Water Level Monitoring: The fountain features a visible water level window on the side. This allows you to easily monitor the water volume without disassembling the unit.
- Indicator Lights:
- A blue light indicates sufficient water.
- A red light indicates a low water level, signaling that a refill is needed.
- Quiet Operation: The ultra-quiet pump operates at approximately 30dB, ensuring a peaceful environment for both you and your pets.

Image: A graphic demonstrating the water level window and its corresponding blue (sufficient water) and red (low water) indicator lights.

Image: A cat resting comfortably near the oneisall PW03 water fountain, emphasizing its quiet operation.
7. Maintenance
Regular cleaning and filter replacement are crucial for maintaining water quality and the longevity of your fountain.
7.1 Weekly Maintenance
- Change Water: Change the water in the fountain at least once a week to ensure freshness.
- Clean Pump: Disassemble and clean the water pump once a week. Remove the pump cover, impeller, and clean any debris or mineral buildup with a small brush. Rinse thoroughly.
- Clean Fountain Components: Wash the stainless steel fountain body, top tray, and filter tray. These components are dishwasher safe for convenience.

Image: The stainless steel parts of the oneisall PW03 cat water fountain being cleaned in a dishwasher, demonstrating its dishwasher-safe feature.
7.2 Filter Replacement
The fountain uses a 3-layer filtration system (carbon filter and sponge filter) to remove impurities, odors, and heavy metals. Filters should be replaced regularly to maintain optimal water quality.
- Frequency: Replace the carbon filter and sponge filter every 2-4 weeks, or more frequently if you have multiple pets or notice reduced water flow/quality.
- Procedure:
- Unplug the fountain and remove the top tray.
- Remove the old filter set from the filter tray.
- Rinse the new filter set under running water to remove any loose carbon dust.
- Place the new sponge filter, then the carbon filter, into the filter tray.
- Reassemble the fountain and refill with fresh water.

Image: A detailed diagram illustrating the multi-layer filtration process within the oneisall PW03 cat water fountain, showing how water is purified.
8. Troubleshooting
If you encounter any issues with your oneisall PW03 water fountain, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fountain not working / No water flow |
|
|
| Water flow is weak or trickling |
|
|
| Fountain is noisy |
|
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| Red light indicator is on | Water level is low. | Refill the fountain with water. |
9. Specifications
- Model: PW03
- Capacity: 3.5 Liters (118 fl oz)
- Material: 304 Stainless Steel & Food-Grade PP (for internal components)
- Dimensions: 7.78"L x 7.78"W x 6"H
- Item Weight: 2 Pounds
- Rated Voltage/Current: DC 5V/1A
- Noise Level: ≤30dB
- Target Audience: House-cats
10. Warranty and Support
oneisall is committed to providing high-quality products and excellent customer service.
- Warranty: This product comes with a 2-Year Warranty from the date of purchase, covering manufacturing defects.
- Customer Service: For any questions, concerns, or support needs, please contact our 24-hour Customer Service team.
- Contact Information: Please refer to the contact details provided on the product packaging or the official oneisall website for the most up-to-date support information.





