1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your SUNTEC oil pump. These pumps are designed for use with light oil, B10 heating oil/biofuel blend (as defined in DIN V51603-6), and kerosene applications. They are typically used in one- or two-pipe systems and are often associated with an in-line solenoid valve.
2. Pump Identification
The pump identification system helps in understanding the specific features of your SUNTEC oil pump. Refer to the diagram below for details on model codes and their meanings.
2.1 Model Code Breakdown
- AN: Basic valve with cut-off.
- V: Indicates B10 applications.
- K: Indicates Kerosene applications.
- Gear set capacity: Refer to pump capacity curves for specific values.
- Shaft rotation and nozzle location (seen from shaft end):
- A: Clockwise rotation, right hand nozzle.
- B: Clockwise rotation, left hand nozzle.
- C: Anti-clockwise rotation, left hand nozzle.
- D: Anti-clockwise rotation, right hand nozzle.
- Model number: Specific product model.
- Revision number: Indicates manufacturing revision.
3. Setup and Installation
Proper installation is crucial for the optimal performance and longevity of your SUNTEC oil pump. The pump can be configured for either a one-pipe or two-pipe system.
3.1 General Installation Guidelines
- Ensure all connections are cylindrical according to ISO 228/1.
- Inlet/Return connections are G 1/4.
- Nozzle outlet is G 1/8.
- Pressure and vacuum gauge ports are G 1/8.
- The shaft is Ø 8 mm according to EN 225.
3.2 One-Pipe System Installation
For a one-pipe system, the by-pass plug must be removed from the return port. The return port should then be sealed using a steel plug and washer. A 4 mm Allen key is required for this operation. A pressure port must be opened to bleed the system during initial setup.
3.3 Two-Pipe System Installation
For a two-pipe system, the by-pass plug is installed in the return port. Bleeding in a two-pipe operation is automatic, but can be accelerated by loosening the plug in a pressure gauge port.
Refer to Figure 3 for a schematic diagram of both one-pipe and two-pipe installations, illustrating oil flow and component placement.
4. Operating Principle
The SUNTEC oil pump operates on a gear set mechanism combined with a cut-off valve to regulate oil pressure and flow to the nozzle line.
4.1 Oil Flow and Pressure Regulation
The gear set draws oil from the tank, passing it through a built-in filter. The oil is then transferred to the nozzle line, where the pressure is regulated. Any oil that does not pass through the nozzle line is bypassed back to the return line. In a two-pipe system, it returns directly to the tank. In a one-pipe system, it returns to the suction port of the gear-set after the by-pass plug has been removed from the return port.
4.2 Cut-Off Function
The pump features a cut-off valve that functions as follows:
- During Start-up: As the gear-set speed increases, oil initially passes through a special flat on the piston and returns. Once the speed reaches a specific value, the flow through this flat ceases, causing pressure to rapidly increase. This pressure then overcomes the valve spring force, opening the valve and allowing normal operation.
- During Shut-down: As the gear-set speed slows down, the valve closes when the gear-set capacity falls below the flat flow threshold.
The precise cut-on and cut-off speeds are dependent on the specific gear-set size and the set pressure.
5. Maintenance
Regular maintenance ensures the reliable operation and extends the lifespan of your oil pump.
5.1 Bleeding the System
- Two-Pipe System: Bleeding is automatic. To accelerate the process, you may loosen the plug in a pressure gauge port.
- One-Pipe System: A pressure port must be opened to bleed the system.
5.2 Filter Inspection
The pump includes a built-in filter. Periodically inspect and clean this filter to prevent blockages and ensure consistent oil flow. The strainer has an open area of 6 cm² (AN 47/57K, 67/77K) or 10 cm² (AN 77A, 97K) with an opening size of 150 µm.
5.3 General Care
- Ensure the oil temperature remains within 0 - 60°C in the pump.
- Maintain inlet and return pressures below 2 bars maximum.
- Avoid suction heights exceeding 4200 mm to prevent air separation.
6. Troubleshooting
This section provides guidance for common issues you might encounter with your SUNTEC oil pump.
6.1 Common Issues and Solutions
- No Oil Flow or Low Pressure:
- Check for air in the system. Bleed the pump as described in Section 5.1.
- Inspect the built-in filter for clogs and clean if necessary.
- Verify that the oil supply tank has sufficient oil.
- Ensure all connections are tight and free from leaks.
- Check the inlet and return pressure to ensure they are within specifications (max 2 bars).
- Pump Not Starting or Irregular Operation:
- Verify the power supply to any associated solenoid valve.
- Check for proper shaft rotation.
- Ensure the operating viscosity of the oil is within the recommended range (1.0 - 12 mm²/s).
- Excessive Noise:
- Air in the system can cause noise; bleed the pump.
- Check for loose components or vibrations.
- Ensure the pump is securely mounted.
If problems persist after attempting these troubleshooting steps, contact technical support.
7. Specifications
Detailed technical specifications for the SUNTEC oil pump are provided below. For visual reference, refer to the technical data sheet image.
7.1 General Data
| Feature | Specification |
|---|---|
| Mounting | Flange or hub according to EN 225 |
| Connection threads | Cylindrical according to ISO 228/1 |
| Inlet/Return | G 1/4 (with facilities for conical sealing 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 47/57K, 67/77K); 10 cm² (AN 77A, 97K) |
| Strainer Opening Size | 150 µm |
| Shaft | Ø 8 mm according to EN 225 |
| By-pass plug | Installed in return port for two-pipe system; One to be removed with 4 mm Allen key for one-pipe system |
| Weight | 1 - 1.3 kg (depending on the model) |
7.2 Hydraulic Data
| Parameter | Specification |
|---|---|
| Gear size | 47/57, 67/77, 97 |
| Nozzle pressure range | 7 - 14 bars |
| Factory setting | 9 bars |
| Inlet pressure | 2 bars max. |
| Return pressure | 2 bars max. |
| Suction height | 4200 mm max. |
| Operating viscosity | 1.0 - 12 mm²/s (cSt) |
| Oil temperature | 0 - 60°C in the pump |
| Torque (at 45 rpm) | 0.10 N.m (AN 47/57K), 0.14 N.m (AN 67/77K), 0.20 N.m (AN 97K) |
7.3 Performance Curves and Dimensions
Figure 4 also illustrates pump capacity (L/h) versus pressure (bars) and power consumption (W) versus pressure (bars) for various AN models. Additionally, detailed pump dimensions for revisions 6, 2, and 4 are provided, with a key for identifying suction, return, nozzle outlet, and gauge ports.
8. User Tips
While specific user reviews or Q&A are not available for this manual, general best practices for oil pumps include:
- Always ensure the oil used is clean and free of contaminants to prevent filter clogging and pump damage.
- Regularly check for any unusual noises or vibrations during operation, which could indicate a developing issue.
- Confirm that the pump is installed in a well-ventilated area and protected from extreme temperatures.
- For optimal performance, adhere strictly to the recommended oil viscosity and temperature ranges.
9. Warranty and Support
For warranty information, please refer to the terms and conditions provided by your original seller or distributor at the time of purchase. Warranty coverage typically addresses manufacturing defects and material flaws under normal operating conditions.
9.1 Technical Support
For technical assistance, troubleshooting guidance beyond this manual, or inquiries regarding parts and service, please contact the manufacturer's authorized support channels. You may also reach out to the seller for initial support.
Contact Information:
- WhatsApp: +86 18617281774
- Wechat: +86 18575391412
- QQ: 3835333265
- Email: yssales141@163.com
