Stenner 45MJL5A1STAA – Classic 45 Series Adjustable Chemical Injection Pump
Product Overview
The Stenner 45MJL5A1STAA is a high-quality peristaltic metering pump designed for precise and consistent chemical injection in pool, spa, and water treatment systems. It provides adjustable flow control, dependable operation, and compatibility with a wide range of liquid chemicals including sanitizers, acids, and pH adjusters.
Key Features
- Adjustable output up to 50 gallons per day at 25 PSI.
- Self-priming peristaltic design—no need for valves or complex priming procedures.
- Durable motor and chemical-resistant tubing for long-term reliability.
- 120V AC, 60Hz motor suitable for continuous or intermittent operation.
- Manual feed rate control dial allows fine-tuning of chemical dosing from 5% to 100% output.
Technical Specifications
- Part Number: 45MJL5A1STAA
- Series: Classic 45 Adjustable
- Voltage: 120V AC / 60Hz
- Maximum Output: 50 GPD (gallons per day)
- Maximum Pressure: 25 PSI
- Motor Power: 1/30 HP
- Tubing Connections: 1/4" ID suction and discharge
- Tube Material: Santoprene (standard chemical-resistant)
Applications
This Stenner pump is commonly used in pool and spa systems, water treatment facilities, and chemical feed applications where accurate dosing is critical. Typical uses include injecting chlorine, acid, soda ash, or specialty chemical solutions for sanitation, pH control, and oxidation.
Installation Instructions
- Mount the pump securely on a flat, stable surface near the chemical source.
- Connect the suction tubing to the chemical supply tank and the discharge tubing to the injection point.
- Ensure proper alignment and secure all connections to prevent leaks.
- Connect to a 120V grounded outlet and verify power supply matches specifications.
- Prime the pump and adjust the feed rate using the control dial for desired output.
Troubleshooting
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No chemical output: Check for air leaks, clogged suction tubing, or worn pump tubing.
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Pump not running: Verify power connection, on/off switch position, and ensure motor is not overloaded.
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Inconsistent dosing: Inspect tubing for cracks or stiffness and replace if necessary.
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Leaks at fittings: Tighten connections and verify correct tubing size and chemical compatibility.
Maintenance Tip
Inspect the pump tubing and fittings monthly for wear or leaks. Replace the pump tube at least once a year or sooner if it shows signs of fatigue. Flush the pump and lines when changing chemical types to prevent cross-contamination. Regular maintenance ensures consistent dosing accuracy and extends the life of the pump.
