1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your AUCD 30DCB 18W Oil Pump. This pump is specifically designed for use with 400W-500W fog smoke machines and other compatible equipment. Please read these instructions thoroughly before use to ensure proper function and longevity of the product.

Figure 1: AUCD 30DCB 18W Fog Smoke Machine Oil Pump
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the product:
- Electrical Safety: Ensure the power supply matches the pump's specified voltage (AC 110-120V@60Hz). Disconnect power before installation or maintenance.
- Installation: Only install the pump in compatible equipment as specified (400W-500W fog machines). Improper installation can lead to malfunction or damage.
- Fluid Compatibility: Use only recommended fog machine fluid. Avoid thick or corrosive fluids, as they can damage the pump.
- Handling: Handle the pump with care. Avoid dropping or subjecting it to excessive force.
- No Electric Shock: The water pump core rotor and AC power magnetic core are separated, designed for safe and reliable operation without electric shock risk.
3. Product Overview
The AUCD 30DCB 18W Oil Pump is a robust and reliable component for various applications, primarily fog machines. It features a plastic core and is designed for AC 110-120V operation. Its compact design allows for integration into a range of equipment.

Figure 2: Pump with identification label showing model and voltage.
Key Features:
- Voltage: AC 110-120V@60Hz
- Rated Power: 18W
- Compatibility: Suitable for 400W-500W fog machines
- Safety: Water Pump Core Rotor & AC Power Magnetic Core Separation for enhanced safety.
- Wiring: No need to distinguish positive and negative for connection.
4. Specifications
Detailed technical specifications for the AUCD 30DCB 18W Oil Pump (Model H30-18):

Figure 3: Technical specifications and dimensional diagrams.
| Parameter | Value |
|---|---|
| Voltage | AC 110-120V@60Hz |
| Rated Power | 18W (30DCB) |
| Insulation Class | F |
| Average Flow Rate | 60-180 ml/min |
| Max Pressure | >=2-5 Bar |
| Noise Level (20CM) | =<55 dB |
| Working Temperature | 98 T(K) |
| Certificates | CE, RoHS, UL, VDE |
| Item Weight | 1.44 ounces |
| Package Dimensions | 3.74 x 3.11 x 2.09 inches |
5. Installation and Setup
This section outlines the general steps for installing the 30DCB 18W oil pump into a compatible fog machine. Always ensure the fog machine is unplugged from the power source before beginning installation.
- Access the Old Pump: Carefully open your fog machine to access the existing oil pump. Note the connections of the old pump (electrical wires and fluid lines).
- Disconnect Old Pump: Disconnect the electrical wires and fluid lines from the old pump. Be mindful of any clamps or fittings.
- Mount New Pump: Secure the new AUCD 30DCB 18W pump in the same location as the old one. The pump may come with a mounting bracket.
- Connect Electrical Wires: Connect the two electrical wires from the fog machine to the new pump's wires. This pump does not require distinguishing between positive and negative connections, allowing for free connection. If the pump does not operate, reversing the wires may resolve the issue.
- Connect Fluid Lines: Attach the fluid intake and output lines to the new pump. Ensure all connections are secure and leak-free. You may need to gently bend existing copper pipes to match the new pump's orientation.
- Grounding (if applicable): If your original pump had a separate ground wire connection, ensure proper grounding for the new setup. This may involve attaching the ground wire to the mounting bracket or another suitable ground point within the machine.
- Test: Once all connections are secure, reassemble the fog machine and perform a test run with fog fluid.

Figure 4: Example of pump connections.
6. Operating the Pump (within a Fog Machine)
The 30DCB 18W pump operates automatically when integrated into a fog machine's control system. When the fog machine is activated, the pump draws fog fluid from the reservoir and pushes it through the heating element, where it is vaporized to produce fog.
- Ensure the fog machine's fluid reservoir is adequately filled with appropriate fog fluid.
- Allow the fog machine to reach its operating temperature before activating the fog output.
- The pump's average flow rate is 60-180 ml/min, providing consistent fog output for 400W-500W machines.

Figure 5: The pump is compatible with various fog machine models.
7. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your pump and fog machine.
- Fluid Quality: Always use high-quality, water-based fog fluid. Avoid using thick or oil-based fluids, as these can cause clogs and premature pump failure. If using concentrated fluid, consider diluting it as recommended by the fluid manufacturer.
- Cleaning: Periodically run a fog machine cleaning solution or distilled water through the pump and heating element to prevent mineral buildup and clogs.
- Storage: Before long-term storage, ensure the fog machine is thoroughly cleaned and drained of fog fluid.
8. Troubleshooting
If you encounter issues with your pump, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not operate / No fog output |
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| Weak or inconsistent fog output |
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| Pump is noisy |
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9. Warranty and Support
For warranty information and technical support, please refer to the purchase documentation or contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty claims.
Manufacturer Contact: For specific inquiries regarding AUCD products, please visit the official AUCD store on Amazon or their website for contact details.
