Introduction and Overview
The Intex Krystal Clear Sand Filter Pump, model SX2100, is designed to provide superior water circulation and filtration for above ground pools. Utilizing Hydro Aeration Technology, this system enhances water clarity and freshness by improving aeration and increasing negative ions at the water surface. It is a robust and efficient solution for maintaining clean and healthy pool water.
This manual provides essential information for the safe and effective operation, installation, and maintenance of your sand filter pump.
Product Features
- Hydro Aeration Technology: Improves circulation, filtration, water clarity, and increases negative ions at the water surface.
- Easy Installation: Designed for straightforward setup, requiring only hose connections and power plug-in.
- Built-in 24-Hour Timer: Features pre-set cycles from 2 to 12 hours for automatic operation, simplifying pool maintenance.
- High Pump Flow Rate: Delivers 2,100 GPH (7,949 LPH) at the pump and 1,600 GPH (6,056 LPH) system flow rate, suitable for pools up to 12,800 gallons.
- Durable Construction: Manufactured with high standards for safety, quality, and value, ensuring longevity.

Image: The Intex Krystal Clear Sand Filter Pump, showing the main unit with the sand tank, pump motor, and multi-port valve.
Setup and Installation
The Intex Krystal Clear Sand Filter Pump is designed for easy setup. Follow these general steps for installation:
- Placement: Position the pump on a firm, level surface, at least 10 feet (3 meters) from the pool. Ensure it is protected from direct sunlight and adverse weather conditions.
- Sand Filling: Carefully fill the sand tank with the recommended amount and type of filter sand (50 lb (23 kg) #20 Silica). Refer to the detailed user guide for specific instructions on filling and leveling the sand.
- Hose Connections: Connect the hoses from the pool's inlet and outlet fittings to the corresponding ports on the pump. Ensure all connections are secure and leak-free.
- Power Connection: Plug the pump into a grounded electrical outlet with GFCI protection. Do not operate the pump without water.
- Priming: Before starting, ensure the pump is primed according to the user guide to remove any air from the system.

Image: Diagram illustrating key specifications of the sand filter pump, including system flow rate, sand capacity, pool size compatibility, and voltage.

Image: Visual representation of the sand filter pump's features, including the built-in timer/control panel, pressure gauge, 6 functions, and strainer basket.
Operating Instructions
The sand filter pump features a multi-port valve with several functions to manage your pool water. Always turn off the pump before changing the valve position.
- Filter: This is the standard operating mode for daily filtration. Water is pumped through the sand bed, trapping debris, and returned to the pool.
- Backwash: Used to clean the sand filter. Water flows in reverse through the sand bed, dislodging trapped debris, and is discharged through the waste port. Perform backwash when the pressure gauge indicates a higher than normal reading (typically 5-10 PSI above starting pressure).
- Rinse: After backwashing, this mode is used to settle the sand bed and flush any remaining dirty water to waste before returning to filter mode.
- Recirculate: Water is circulated through the pump and returned to the pool without passing through the sand filter. Useful for distributing chemicals or when filtration is not needed.
- Drain: Used to drain water directly from the pool through the waste port, bypassing the filter.
- Closed: Shuts off all flow to the filter and pool. Use this setting when performing maintenance on the pump or pool.
The built-in 24-hour timer allows you to set automatic operating cycles from 2 to 12 hours. Consult the user guide for detailed instructions on setting the timer and specific operating procedures for each function.

Image: The Intex Krystal Clear Sand Filter Pump, highlighting its compatibility with various Intex pools and ease of installation.

Image: Close-up of the Hydro Aeration Technology water inlet jet, showing enhanced water flow back into the pool.
Maintenance
Regular maintenance is crucial for the longevity and optimal performance of your sand filter pump. Key maintenance tasks include:
- Backwashing: Perform backwash regularly, typically when the pressure gauge reads 5-10 PSI above its clean operating pressure, or when water flow decreases noticeably. This removes trapped debris from the sand.
- Rinsing: Always follow backwashing with a rinse cycle to settle the sand and prevent dirty water from returning to the pool.
- Sand Replacement: Filter sand typically needs replacement every 5 years, depending on usage and water quality. Refer to the user guide for detailed instructions on sand replacement.
- Strainer Basket Cleaning: Periodically check and clean the strainer basket located before the pump impeller to remove large debris and ensure unrestricted water flow.
- Winterization: Properly winterize the pump at the end of the swimming season to prevent damage from freezing temperatures. This involves draining all water from the pump and filter, and storing components in a dry, protected area.

Image: A woman operating the Intex Krystal Clear Sand Filter Pump next to an above-ground pool, demonstrating typical usage.

Image: A diagram illustrating advanced water circulation patterns within a pool, indicating improved water movement.
Troubleshooting
If you encounter issues with your Intex Krystal Clear Sand Filter Pump, refer to the following common troubleshooting tips. For more detailed solutions, consult the full user manual.
| Problem | Possible Cause | Solution |
|---|---|---|
| Low Water Flow / Poor Filtration |
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| Pump Not Starting |
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| Water Leaks |
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Specifications
| Attribute | Detail |
|---|---|
| Brand | Intex |
| Model Number | 26645EG (SX2100) |
| Color | Grey |
| Material | Plastic |
| Product Dimensions (L x W x H) | 22.25" x 15.38" x 23.25" |
| Power Source | Corded Electric |
| Item Weight | 36 Pounds |
| Maximum Flow Rate | 7949 Liters Per Hour (2100 GPH) |
| System Flow Rate (In Pool) | 1600 GPH (6056 LPH) |
| Voltage | 120 Volts |
| Wattage | 120 watts |
| Sand Capacity | 50 lb (23 kg) #20 Silica |
| Suitable Pool Size | Up to 12,800 gallons |
Warranty and Support
The Intex Krystal Clear Sand Filter Pump comes with a 2-year manufacturer's warranty. Please retain your proof of purchase for warranty claims.
For comprehensive instructions, safety warnings, and detailed troubleshooting, please refer to the official user guide:
For additional support or inquiries, please visit the official Intex website or contact their customer service.





