1. Introduction
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of your SUNTEC oil pump. These gear pumps are designed for use with diesel oil and oil boiler systems, ensuring reliable pressure and flow for various applications. Please read this manual thoroughly before installation and operation to ensure safe and efficient use.
Video: Overview of the SUNTEC oil pump, showing its physical characteristics and components.
2. Setup and Installation
Proper installation is crucial for the optimal performance and longevity of your SUNTEC oil pump. Refer to the diagrams and specifications below for correct mounting and connection.
2.1 Mounting
- Mounting: Flange or hub according to EN 225 standards.
- Connection Threads: Cylindrical according to ISO 228/1.
- Inlet/Outlet: G 1/4 (with facilities for coaxial suction on revision 6 models).
- Nozzle Outlet: G 1/8.
- Pressure Gauge Ports: G 1/8.
- Vacuum Gauge Port: G 1/8.
2.2 Pipe System Configuration
The pump can be configured for one-pipe or two-pipe systems. The by-pass plug is internal and used for the return port in two-pipe systems. For one-pipe systems, a pressure port must be opened to bleed the system.
Image: SUNTEC Pump Type AN - Gear Sizes, Pump Identification, Pump Operating Principle, Bleeding, and One/Two Pipe Installation Diagram. This diagram illustrates the flow paths for both single and two-pipe installations, including the location of the by-pass and pressure adjustment screws.
Image: Technical Data Sheet detailing general specifications, hydraulic data, pump capacity, power consumption, and various pump dimension diagrams for revisions 6, 2, and 4. This includes detailed measurements for mounting and connections.
3. Operating Instructions
The SUNTEC AN oil pump is a basic model incorporating a pressure regulating valve with cut-off. It is suitable for light oil, B10 heating oil/biofuel blend (as defined in DIN V51603-6) and kerosene.
3.1 Pump Operation Principle
The gear set draws oil from the tank through the built-in filter and transfers it to the nozzle line that regulates the oil pressure to the nozzle line. All oil which does not go through the nozzle line is by-passed through the valve back to the return line, in a two-pipe installation or, if it is a one-pipe installation, back to the suction port in the gear-set. In that case, the by-pass plug must be removed from the return port, and the return port sealed by a steel plug and washer.
The valve also has a cut-off function as follows:
- During starting period when the gear-set speed is increasing, all the oil passes through a special flat on the piston, back to the return. Once the speed reaches a certain value and the flow can no longer pass through this flat, then the pressure increases rapidly overcoming the valve spring force and opens the valve.
- During the stop sequence, the gear-set speed slows down and the valve closes when the gear-set capacity is lower than the flat flow.
- The cut-on and cut-off speeds depend on the gear-set size, and set pressure.
3.2 Bleeding the System
- Two-pipe operation: Bleeding is automatic. It can be accelerated by loosening the plug in a pressure gauge port.
- One-pipe operation: A pressure port must be opened to bleed the system.
4. Maintenance
Regular maintenance ensures the longevity and efficient performance of your oil pump.
- Strainer Inspection: The pump includes a strainer with an open area of 6 cm² (for AN 47/77K, 97/97K models) and an opening size of 150 µm. Periodically inspect and clean the strainer to prevent blockages and maintain optimal flow.
- Oil Temperature: Ensure the oil temperature in the pump remains within 0 - 60°C. Operating outside this range may affect pump performance and lifespan.
- Pressure Monitoring: Monitor inlet and return pressures to ensure they do not exceed 2 bars max.
- Suction Height: Maintain a suction height of 0.5 bars max vacuum to prevent air separation from the oil, which can lead to cavitation and reduced efficiency.
5. Troubleshooting
This section provides guidance for common issues you might encounter with your oil pump.
5.1 Air in the System
- If air is present in a two-pipe system, bleeding is automatic. To accelerate the process, you can temporarily loosen the plug in a pressure gauge port until air is expelled.
- For one-pipe systems, it is necessary to open a pressure port to bleed the system manually.
5.2 Reduced Flow or Pressure
- Check the strainer for blockages and clean if necessary.
- Verify that the oil temperature is within the recommended operating range (0 - 60°C).
- Inspect the inlet and return lines for any obstructions or leaks.
- Ensure the suction height is within specifications to prevent air separation.
6. Specifications
Below are the technical specifications for the SUNTEC oil pump series.
6.1 General Data
| Feature | Specification |
|---|---|
| Origin | Mainland China |
| Mounting | Flange or hub according to EN 225 |
| Connection Threads | Cylindrical according to ISO 228/1 |
| Inlet/Outlet | G 1/4 (with facilities for coaxial suction on revision 6 models) |
| Nozzle Outlet | G 1/8 |
| Pressure Gauge Ports | G 1/8 |
| Vacuum Gauge Port | G 1/8 |
| Valve Function | Pressure regulating and cut-off |
| Strainer Open Area | 6 cm² (AN 47/77K, 97/97K) |
| Strainer Opening Size | 150 µm |
| Shaft | Ø 8 mm according to EN 225 |
| By-pass Plug | Internal, for return port in two-pipe system |
| Weight | 1 - 1.3 kg (depending on the model) |
| High-concerned chemical | None |
6.2 Hydraulic Data
| Parameter | Value |
|---|---|
| Gear Size | AN 57/77/97 |
| Nozzle Pressure Range | 7 - 14 bars |
| Factory Setting | 9 bars |
| Inlet Pressure | 2 bars max. |
| Return Pressure | 2 bars max. |
| Suction Height | 0.5 bars max, vacuum to prevent air separation from oil |
| Rotation Speed | 2850 rpm |
| Torque (at 45 rpm) | 0.1 N.m (AN 47/77K), 0.15 N.m (AN 57/77K), 0.20 N.m (AN 97/97K) |
| Oil Temperature | 0 - 60°C in the pump |
7. User Tips
- For optimal performance, ensure the pump is correctly installed for either a one-pipe or two-pipe system, and that the by-pass plug is configured appropriately.
- Regularly check for air in the system, especially after installation or maintenance. Prompt bleeding will prevent operational issues.
- If integrating this pump into a larger system like a "Master BV170E" diesel cannon, ensure all components (e.g., flame sensors, solenoids) are compatible and correctly installed for the entire system to function efficiently.
8. Support and Contact Information
For any questions, technical assistance, or support regarding your SUNTEC oil pump, please contact Tiandi Spray Nozzle Store Store using the following channels:
- WhatsApp: +86 18566922948
- WeChat: +86 18566922948
- Gmail: ys.sales013@gmail.com
- Instagram: ys.sales013
- YouTube: Huajue spray nozzle
We aim to respond to inquiries within 8 hours. If your matter is urgent, please use the direct contact methods provided.
Image: Summary of customer reviews, indicating high product quality and satisfaction.
