1. Introduction
This manual provides detailed instructions for the safe and efficient use of your SICCE Syncra Silent 2.0 Multifunction Water Pump. Designed for versatility and quiet operation, this pump is suitable for various applications including aquariums, indoor fountains, ponds, and hydroponic systems. Please read this manual thoroughly before installation and operation.

Image 1.1: The SICCE Syncra Silent 2.0 Multifunction Water Pump.
The Syncra Silent series combines high performance with energy efficiency and extremely quiet operation. Its robust design ensures long-term reliability when properly maintained.

Image 1.2: The Syncra Silent pump is suitable for aquariums, chillers, hydroponics, fountains, and industrial applications.
2. Important Safety Instructions
WARNING: To avoid injury, basic safety precautions should be observed, including the following:
- Read and follow all safety instructions and all important notices on the appliance before using it.
- DANGER – To avoid possible electric shock, special care should be taken since water is used in the use of aquarium equipment. For each of the following situations, do not attempt repairs yourself; return the appliance to an authorized service facility for service or discard the appliance.
- If the appliance falls into water, DO NOT reach for it. First, unplug it and then retrieve it. If electrical components get wet, unplug the appliance immediately.
- If the appliance shows any sign of abnormal water leakage, immediately unplug it from the power source.
- Carefully examine the appliance after installation. It should not be plugged in if there is water on parts not intended to be wet.
- Do not operate any appliance if it has a damaged cord or plug, or if it is malfunctioning or has been dropped or damaged in any manner.
- To avoid the possibility of the appliance plug or receptacle getting wet, position the aquarium stand and tank to one side of a wall-mounted receptacle to prevent water from dripping onto the receptacle or plug. A "drip loop" should be arranged by the user for each cord connecting an aquarium appliance to a receptacle. The "drip loop" is that part of the cord below the level of the receptacle, or the connector if an extension cord is used, to prevent water from traveling along the cord and coming into contact with the receptacle. If the plug or receptacle does get wet, DO NOT unplug the cord. Disconnect the fuse or circuit breaker that supplies power to the appliance. Then unplug and examine for presence of water in the receptacle.
- Close supervision is necessary when any appliance is used by or near children.
- To avoid injury, do not contact moving parts or hot parts such as heaters, reflectors, lamp bulbs, and the like.
- Always unplug an appliance from an outlet when not in use, before putting on or taking off parts, and before cleaning. Never yank cord to pull plug from outlet. Grasp the plug and pull to disconnect.
- Do not use an appliance for other than intended use. The use of attachments not recommended or sold by the appliance manufacturer may cause an unsafe condition.
- Do not install or store the appliance where it will be exposed to the weather or to temperatures below freezing.
- Ensure the appliance is securely installed before operating it.
- Read and observe all important notices on the appliance.
3. Package Contents
Upon opening the package, verify that all components are present and undamaged:
- SICCE Syncra Silent 2.0 Water Pump
- Pre-chamber with adjustable flow control
- Impeller cover
- Suction cups (pre-installed or separate)
- Various barb and threaded fittings for hose connections
- Instruction Manual (this document)

Image 3.1: Main components of the Syncra Silent pump, including the prechamber, impeller cover, and suction cups.

Image 3.2: Various barb and threaded fittings for different Syncra Silent models (0.5/1.0, 1.5, 2.0/2.5/3.0, 3.5/4.0/5.0).
4. Setup and Installation
The Syncra Silent 2.0 pump can be used in two primary configurations: submersed or in-line (external).
4.1 Submersed Use
- Attach the appropriate barb fitting to the pump's outlet.
- Connect your hose to the barb fitting.
- Ensure the suction cups are securely attached to the bottom of the pump.
- Place the pump entirely underwater in your aquarium, sump, pond, or reservoir. Ensure it is stable and not obstructed.
- Route the power cord safely, creating a drip loop before plugging into an electrical outlet.
4.2 In-line (External) Use
- Attach the appropriate threaded fittings to both the inlet and outlet of the pump.
- Connect your inlet and outlet hoses securely to the fittings.
- Position the pump on a stable, level surface. The included suction cups can help reduce vibrations.
- Ensure the pump is not exposed to direct weather or freezing temperatures if used outdoors.
- Route the power cord safely, creating a drip loop before plugging into an electrical outlet.

Image 4.1: Illustration of submersed and in-line installation methods for the Syncra Silent pump.
4.3 Flow Control and Features
The Syncra Silent 2.0 features a prechamber with adjustable flow control, allowing you to regulate the water flow rate. The pump is designed for tool-free disassembling for easy maintenance. Taller suction cups are included to prevent vibrations and ensure quiet operation.

Image 4.2: Key features include tool-free disassembling, adjustable flow control prechamber, and double high suction cups.
5. Operating Instructions
Once installed, ensure all connections are secure and the pump is positioned correctly for your application.
- Power On: Plug the pump into a suitable electrical outlet. The pump should start immediately.
- Adjust Flow: If your model includes an adjustable flow control, rotate the prechamber dial to increase or decrease the water flow as needed for your system.
- Monitor Operation: Observe the pump for the first few minutes to ensure proper water flow and quiet operation. Some initial air bubbles or slight noise may occur as air is purged from the system.
- Continuous Use: The Syncra Silent pump is designed for continuous operation.
Note:
- The pump is designed to be ultra-quiet. If you notice excessive noise, refer to the troubleshooting section.
- Ensure the pump is always submerged if used in a submersible configuration to prevent dry running, which can damage the motor.
6. Maintenance and Cleaning
Regular maintenance ensures the longevity and optimal performance of your Syncra Silent pump. The pump features a special recirculation feature for rotor self-cleaning, but periodic manual cleaning is still recommended.
- Disconnect Power: Always unplug the pump from the electrical outlet before performing any maintenance.
- Disassembly: The pump is designed for tool-free disassembly. Gently pull the front cover (prechamber) to remove it. Then, remove the impeller cover and the impeller assembly.
- Clean Components:
- Clean the impeller, impeller shaft, and the pump housing interior using a soft brush and clean water.
- Remove any debris, algae, or mineral deposits that may have accumulated.
- For stubborn deposits, a mild vinegar solution can be used, followed by thorough rinsing with clean water.
- Inspect Components: Check the impeller for any signs of wear or damage. Ensure the ceramic shaft and bushings are intact. Replace any worn or damaged parts with genuine Sicce spare parts.
- Reassembly: Reassemble the pump in reverse order, ensuring all parts fit securely.
- Test: After reassembly, place the pump back into its operating environment and plug it in to test its function.

Image 6.1: The high-quality impeller component, crucial for silent and energy-saving performance.
7. Troubleshooting Guide
If your SICCE Syncra Silent 2.0 pump is not functioning as expected, consult the following table for common issues and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start or runs intermittently. |
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| Reduced water flow. |
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| Excessive noise or vibration. |
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8. Technical Specifications
| Feature | Detail |
|---|---|
| Model | Syncra Silent 2.0 |
| Brand | Sicce |
| Power Source | AC/DC |
| Voltage | 120 Volts |
| Wattage | 35 Watts |
| Maximum Flow Rate | 568 GPH (approx. 1 Gallon Per Minute) |
| Maximum Lifting Height | 1.5 Feet (0.45 meters) |
| Product Dimensions (L x W x H) | 4.9" x 3" x 3.8" (12.4 cm x 7.6 cm x 9.6 cm) |
| Item Weight | 16 ounces (1 pound) |
| Material | Stainless Steel (internal components), Durable Plastic |
| Applications | Aquariums, Fountains, Ponds, Hydroponics, Terrariums |
| Compatibility | Freshwater & Saltwater |

Image 8.1: Dimensional drawings for various Syncra Silent pump models (0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 5.0).

Image 8.2: Visual comparison of different Syncra Silent pump sizes.
9. Warranty and Support
The SICCE Syncra Silent 2.0 pump comes with a standard 3-year warranty. This warranty can be extended to 5 years with online product registration. Please retain your proof of purchase for warranty claims.
For technical support, spare parts, or warranty inquiries, please visit the official Sicce website or contact their customer service department. You can also visit the Sicce Store on Amazon for additional product information and support resources.

Image 9.1: Sicce, a brand with over 40 years of experience in the aquarium and gardening market.





