1. Product Overview
The BAOSHISHAN Overhead Stirrer is a robust laboratory instrument designed for efficient mixing of various liquids, including high-viscosity materials. It features a brushless motor for continuous operation, digital speed control, and a timer function, making it suitable for demanding laboratory applications.
Key Features:
- Brushless Motor: High-torque, maintenance-free motor with soft-start function to prevent sample splashing.
- Digital Display & Timer: Intuitive LED control panel with backlit display for precise time-controlled mixing (1-999 minutes).
- Chemical-Resistant Construction: Premium stainless steel chuck and mixing shaft for corrosion resistance.
- Dual-Direction Mixing: Automatic clockwise/counterclockwise rotation for improved mixing efficiency.
- High Viscosity Capability: Handles materials up to 50,000 mPa·s.
- Large Volume Capacity: Suitable for mixing up to 40 liters (H₂O).
What's in the Box:
- Overhead Stirrer Unit
- Support Stand
- Adjustable Clamps
- Mixing Shaft
Image 1.1: The BAOSHISHAN Overhead Stirrer unit with key specifications including maximum stirring volume (40L), maximum viscosity (50000 mPas), maximum torque (180 N·cm), timer range (1s-999min), speed range (50-2200 rpm), and speed accuracy (±3 rpm).
2. Safety Instructions
Read all instructions carefully before operating the device. Failure to follow safety guidelines may result in injury or damage to the equipment.
- Ensure the power supply matches the specifications (110V).
- Always secure the stirrer unit and mixing vessel firmly to the support stand before operation.
- Do not operate the stirrer with damaged cables or if the unit shows signs of malfunction.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and lab coats, when operating the stirrer.
- Avoid touching the rotating mixing shaft during operation.
- Ensure adequate ventilation when mixing volatile or hazardous substances.
- Disconnect the power cord before cleaning or performing any maintenance.
- Do not immerse the main stirrer unit in water or other liquids.
- Keep the work area clean and free from obstructions.
3. Setup and Assembly
Follow these steps to assemble and set up your BAOSHISHAN Overhead Stirrer:
- Assemble the Support Stand: Place the base on a stable, level surface. Insert the vertical rod into the base and secure it.
- Attach the Stirrer Unit: Use the provided stand clamp to attach the overhead stirrer unit to the vertical rod. Position it at a suitable height above your mixing vessel. Ensure the clamp is tightened securely.
- Install the Mixing Shaft: Insert the mixing shaft into the stainless steel chuck of the stirrer unit. Tighten the chuck firmly to ensure the shaft is centered and secure.
- Position the Mixing Vessel: Place your beaker or container directly beneath the mixing shaft on the base of the support stand. Use additional tool holders if necessary to secure the vessel.
- Connect Power: Plug the power cord into a grounded 110V electrical outlet.
Image 3.1: Illustration of the stand clamp (1) for height adjustment and the tool holder (2) for securing the mixing vessel.
Image 3.2: Close-up of the stainless steel chuck and clamp (1) and the base with an anti-slip silicone layer (2).
Image 3.3: Dimensions of the assembled overhead stirrer, showing a height of 32.68 inches (830mm), base width of 14.96 inches (380mm), and base depth of 9.45 inches (240mm).
4. Operating Instructions
Once the stirrer is properly set up, follow these steps for operation:
- Power On: Flip the main power switch to the 'ON' position. The digital display will illuminate.
- Set Speed: Use the 'Min' and 'Max' adjustment knob to set the desired stirring speed. The speed range is 100-2500 rpm. The current speed will be shown on the digital display.
- Set Timer (Optional): Press the 'Mode' button to cycle through timer settings. Use the adjustment knob to set the desired mixing duration (1-999 minutes). The stirrer will automatically stop after the set time.
- Start Mixing: Press the 'Start/Stop' button to begin stirring. The soft-start function will gradually increase the speed to the set value.
- Adjust Rotation Direction: The stirrer supports dual-direction mixing. Consult the specific model's control panel for the button or setting to switch between clockwise and counter-clockwise rotation, if applicable. This feature enhances mixing efficiency for various applications.
- Stop Mixing: Press the 'Start/Stop' button to pause or stop the stirring process.
- Power Off: After use, turn the main power switch to the 'OFF' position and unplug the unit.
Image 4.1: The LED backlit control panel, showing digital readouts for speed and timer settings, along with control buttons for power, loop, and mode.
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your overhead stirrer.
- Cleaning: After each use, unplug the unit and wipe down the stirrer unit, support stand, and mixing shaft with a damp cloth. For chemical spills, use a mild detergent or appropriate solvent, ensuring it does not damage the unit's exterior. Do not use abrasive cleaners.
- Chuck and Shaft: Regularly inspect the stainless steel chuck and mixing shaft for any signs of wear, corrosion, or damage. Clean any residue from the chuck jaws to ensure a secure grip on the mixing shaft.
- Motor: The brushless motor is designed for continuous operation and is maintenance-free, requiring no lubrication or brush replacement.
- Storage: Store the stirrer in a clean, dry environment when not in use.
- Inspection: Periodically check all cables and connections for damage. Ensure all clamps and fasteners are tight.
6. Troubleshooting
Refer to the following table for common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Stirrer does not power on. | No power supply; power cord loose; main switch off. | Check power connection; ensure main switch is ON; test outlet. |
| Mixing shaft does not rotate. | Stirrer not started; chuck loose; motor fault. | Press 'Start/Stop'; tighten chuck; contact customer support if motor fault is suspected. |
| Inconsistent stirring speed. | Overload; unstable power; material too viscous. | Reduce load/volume; check power supply; ensure material viscosity is within limits. |
| Unusual noise or vibration. | Mixing shaft bent/unbalanced; stirrer unit loose; foreign object. | Inspect mixing shaft; tighten all clamps; check for obstructions. |
If the problem persists after attempting these solutions, please contact BAOSHISHAN customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Model | B0F9YPW3YM |
| Power Supply | 110V |
| Speed Range | 100-2500 rpm (adjustable) |
| Speed Accuracy | ±3 rpm |
| Max. Stirring Volume (H₂O) | 40 Liters (10.57 gallons) |
| Max. Viscosity | 50,000 mPa·s |
| Max. Torque | 180 N·cm |
| Timer Range | 1 second - 999 minutes |
| Motor Type | Brushless |
| Chuck Material | Stainless Steel |
| Item Weight | 15 pounds |
| Package Dimensions | 24 x 12 x 8 inches |
8. Warranty and Support
The BAOSHISHAN Overhead Stirrer comes with a 2-year warranty from the date of purchase, providing peace of mind regarding product quality and manufacturing defects.
For technical assistance, warranty claims, or any questions regarding the operation or maintenance of your device, please contact BAOSHISHAN customer support. Our team is available to assist you with any concerns.
Please retain your proof of purchase for warranty validation.
