1. Introduction and Overview
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Taco 006-ST4 1/40 HP 115V Stainless Steel Circulator Pump. The Taco 006-ST4 is designed for circulating water in various heating and cooling applications, particularly where corrosion resistance is critical. Its self-lubricating design enhances reliability by eliminating the need for a mechanical seal.
2. Safety Information
WARNING: To reduce the risk of electric shock, always disconnect power to the unit before installation, servicing, or maintenance. Refer to the complete instruction manual for proper installation procedures. This equipment is for indoor use only and must be installed by a qualified professional. Not for use in swimming pool or marine areas.
- Always ensure the power supply matches the pump's voltage requirements (115V).
- Do not operate the pump without water. Dry running can cause severe damage.
- Ensure all plumbing connections are secure and leak-free to prevent water damage.
- Wear appropriate personal protective equipment (PPE) during installation and maintenance.
- Observe all local codes and regulations for electrical and plumbing installations.
3. Product Features
The Taco 006-ST4 Circulator Pump offers several key features:
- Self-Lubricating Design: Eliminates the need for a mechanical seal, improving long-term reliability and reducing maintenance.
- Stainless Steel Construction: Provides excellent corrosion resistance, making it suitable for a wide range of water circulation applications.
- Compact Design: Facilitates installation in confined spaces.
- Quiet Operation: Engineered for minimal noise during operation.
- Continuous Duty: Designed for reliable, continuous performance.
4. Setup and Installation
Proper installation is crucial for the optimal performance and longevity of your Taco 006-ST4 circulator pump. Always refer to the detailed installation instructions provided in the full product manual for specific guidance.
General Installation Guidelines:
- Mounting: The pump should be mounted securely in a horizontal position with the motor housing level. Ensure adequate clearance for wiring and future maintenance.
- Piping: Connect the pump to the system piping using appropriate fittings. Ensure that the system is clean and free of debris before connecting the pump.
- Electrical Connections: All electrical wiring must be performed by a qualified electrician in accordance with local and national electrical codes. Ensure the power supply is disconnected before making any connections. The pump requires a 115V, 60Hz power supply.
- System Filling: After installation, fill the system with water and thoroughly purge all air to prevent dry running and cavitation.
Figure 1: Front view of the Taco 006-ST4 Circulator Pump, showing the motor, pump housing, and electrical connection box. Key specifications like HP, Amps, Volts, Max Press, and Max Water Temp are visible on the label.
Figure 2: Dimensional view of the Taco 006-ST4 Circulator Pump, indicating approximate measurements of 6 inches in height, 6 inches in width, and 4 inches in depth for installation planning.
5. Operating Instructions
Once properly installed and the system is filled and purged of air, the Taco 006-ST4 pump is designed for straightforward operation.
- Power On: Restore electrical power to the pump. The pump will begin circulating water immediately.
- System Monitoring: Observe the system for proper flow and ensure there are no leaks. Listen for any unusual noises, which could indicate air in the system or an obstruction.
- Temperature and Pressure: Ensure the system's operating temperature and pressure remain within the pump's specified limits (Max Press: 125 PSI, Max Water Temp: 220 °F / 104 °C).
The pump is designed for continuous duty, meaning it can operate for extended periods without interruption.
6. Maintenance
The Taco 006-ST4 circulator pump features a self-lubricating design, which significantly reduces maintenance requirements. Regular inspection is generally sufficient to ensure continued reliable operation.
- Annual Inspection: Periodically inspect the pump for any signs of leaks, corrosion, or unusual wear.
- Noise Check: Listen for any changes in operating noise. Increased noise can indicate air in the system, cavitation, or potential motor issues.
- Electrical Connections: Ensure all electrical connections remain tight and free from corrosion.
- Cleaning: Keep the exterior of the pump clean and free of dust or debris to ensure proper heat dissipation.
No user-serviceable parts are inside the sealed motor housing. For any internal issues, contact a qualified service technician.
7. Troubleshooting
This section addresses common issues you might encounter with your circulator pump. For complex problems, consult a qualified professional.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start or run | No power; tripped circuit breaker; faulty wiring; seized impeller | Check power supply and circuit breaker. Verify wiring connections. Consult a technician if impeller is seized. |
| No or low flow | Air in system; closed valves; clogged impeller; incorrect pump size | Purge air from the system. Open all necessary valves. Inspect for clogs. Ensure pump is correctly sized for application. |
| Excessive noise or vibration | Air in system (cavitation); loose mounting; foreign object in pump; worn bearings | Purge air from system. Tighten mounting bolts. Disconnect power and inspect impeller for obstructions. Contact service for worn bearings. |
| Leaking from pump | Loose connections; damaged gaskets/O-rings; cracked housing | Tighten pipe connections. Replace damaged gaskets/O-rings. A cracked housing requires pump replacement. |
8. Specifications
Detailed technical specifications for the Taco 006-ST4 Circulator Pump:
| Specification | Value |
|---|---|
| Model Number | 006-ST4 |
| Horsepower (HP) | 1/40 HP |
| Voltage | 115V |
| Amperage | 0.52 Amps |
| Frequency | 60 Hz |
| RPM | 3250 RPM |
| Maximum Pressure | 125 PSI |
| Maximum Water Temperature | 220 °F (104 °C) |
| Material | Stainless Steel |
| Enclosure Type | Type 2 |
| Class | Class H |
| Approximate Dimensions (L x W x H) | 6" x 6" x 4" |
| Item Weight | 1 pound (16 ounces) |
| Power Source | Electric |
Figure 3: Side profile of the Taco 006-ST4 Circulator Pump, illustrating its compact size with a height of approximately 5.7 inches (14 cm).
9. Warranty and Support
Taco products are manufactured to high standards and typically come with a limited warranty. While specific warranty terms may vary, the Taco 006-ST4 is generally covered by a manufacturer's warranty, often for a period of three years from the date of purchase, covering defects in materials and workmanship.
For warranty claims, technical support, or service inquiries, please contact Taco customer service or your authorized dealer. Keep your proof of purchase and product model information readily available when contacting support.
Contact Information: Refer to the official Taco website or the documentation included with your product for the most current contact details.
