1. Introduction
Thank you for choosing the ZACK Tervo Sensor Soap Dispenser. This manual provides essential information for the safe and efficient use, installation, operation, and maintenance of your new device. Please read this manual thoroughly before use and retain it for future reference.
2. Important Safety Information
- Do not immerse the dispenser in water or any other liquid.
- Keep the device away from direct sunlight and heat sources.
- Use only liquid soap or hand sanitizer suitable for automatic dispensers. Thick gels or abrasive liquids may damage the pump mechanism.
- Do not attempt to disassemble or repair the unit yourself. Contact customer support for assistance.
- Keep out of reach of children to prevent misuse.
- Ensure the dispenser is placed on a stable, flat surface to prevent tipping.
3. Package Contents
Please check the package for the following items:
- ZACK Tervo Sensor Soap Dispenser Unit
- USB Charging Cable (for internal battery)
- User Manual (this document)
4. Product Overview
The ZACK Tervo Sensor Soap Dispenser features a sleek design with an infrared sensor for hygienic, touch-free operation. It is constructed from high-quality stainless steel with a gloss finish.

Figure 1: ZACK Tervo Sensor Soap Dispenser. The image displays the cylindrical, glossy stainless steel body, the dispensing nozzle at the front, and the power button with an indicator light on the top surface.
5. Setup and Installation
5.1. Charging the Device
- Locate the charging port, typically at the base or rear of the dispenser.
- Connect the provided USB charging cable to the dispenser and a suitable USB power adapter (not included).
- The indicator light will show the charging status (e.g., red for charging, green for fully charged).
- Allow the dispenser to fully charge before first use.
5.2. Filling the Dispenser
- Ensure the dispenser is turned off before filling.
- Carefully remove the top cap or lid of the dispenser.
- Pour approximately 200 ml of liquid soap or hand sanitizer into the reservoir. Do not overfill.
- Securely replace the top cap or lid.
5.3. Placement
Place the dispenser on a stable, flat surface in your desired location, such as a bathroom counter or kitchen sink area. Ensure there is sufficient space around the sensor for unobstructed operation.
6. Operating Instructions
6.1. Powering On/Off
- To turn on the dispenser, press and hold the power button located on the top of the unit until the indicator light illuminates.
- To turn off the dispenser, press and hold the power button again until the indicator light turns off. This is recommended for cleaning or long-term storage.
6.2. Dispensing Soap
Once the dispenser is powered on, simply place your hand under the dispensing nozzle. The infrared sensor will detect your hand and automatically dispense a measured amount of liquid soap.
6.3. Adjusting Dispensing Volume
The ZACK Tervo dispenser allows for adjustment of the soap dosage. To adjust the volume, briefly press the power button repeatedly after turning the unit on. Each press will cycle through different dispensing volumes, indicated by the number of times the indicator light flashes. Select the desired volume by stopping at the corresponding flash count.
7. Care and Maintenance
7.1. Cleaning the Dispenser
- Turn off the dispenser before cleaning.
- Wipe the exterior of the dispenser with a soft, damp cloth.
- Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the stainless steel finish.
- Ensure no water enters the battery compartment or sensor area.
7.2. Refilling
Refill the dispenser when the soap level is low to ensure continuous operation. Refer to section 5.2 for filling instructions.
7.3. Long-Term Storage
If the dispenser will not be used for an extended period, it is recommended to empty the soap reservoir, clean the unit, and turn it off. Store it in a cool, dry place.
8. Troubleshooting
If you encounter any issues with your ZACK Tervo Sensor Soap Dispenser, please refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Dispenser does not turn on. | Low battery or unit is off. | Charge the dispenser fully. Press and hold the power button to turn on. |
| Soap is not dispensing. | Empty reservoir, clogged nozzle, or sensor obstruction. | Refill with soap. Clean the nozzle. Ensure nothing is blocking the sensor. |
| Sensor is not responding. | Sensor is dirty, obstructed, or unit is off. | Clean the sensor area. Ensure no objects are too close. Turn the unit on. |
| Soap is too thick or pump is weak. | Soap consistency is not suitable for the dispenser. | Dilute the soap with a small amount of water or use a thinner liquid soap. |
| Dispenser is leaking. | Overfilled, cap not secured, or internal seal issue. | Do not overfill. Ensure the top cap is securely fastened. If problem persists, contact support. |
9. Product Specifications
| Feature | Specification |
|---|---|
| Brand | Zack |
| Model Number | ZACK-40543 |
| Capacity | 200 ml |
| Material | Stainless Steel (Gloss Finish) |
| Product Dimensions (L x W x H) | 0.39" x 2.48" x 7.4" |
| Item Weight | 0.663 ounces |
| Power Source | Rechargeable (via USB cable) |
10. Warranty and Customer Support
ZACK products are manufactured to high-quality standards. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase for specific terms and conditions.
For technical support, warranty claims, or any other inquiries, please contact your retailer or visit the official ZACK website for customer service contact information.