1. Introduction
Thank you for choosing the Jebao Jecod Smart Doser MD-4.5. This automatic dosing pump is designed to provide precise and reliable liquid dosing for your aquarium, essential for maintaining stable water parameters in coral reef and fish tanks. Featuring both Smart WiFi and manual control functions, the MD-4.5 offers flexibility and ease of use for hobbyists.

2. Key Features
- Smart WiFi control function for remote management.
- Manual control function for direct operation.
- Automatic dosing with high precision.
- Safety low voltage operation (DC 12V).
- Automatic control of dosing liquid for consistent results.
- Includes fixed support for secure installation.

3. What's in the Box
Upon unpacking your Jebao Jecod Smart Doser MD-4.5, please ensure all items are present and in good condition:
- 1 x MD-4.5 Dosing Pump
- 1 x 12V Power Supply Adapter
- 1 x User Manual

4. Setup Guide
4.1 Physical Installation
- Choose a suitable location near your aquarium, ensuring it is dry and protected from splashes.
- Mount the MD-4.5 using the integrated fixed support. Ensure it is level and secure.
- Connect the dosing tubes to the pump heads (CH1-CH5) and route them to your dosing containers and aquarium. Ensure tubes are not kinked or obstructed.
- Connect the 12V Power Supply Adapter to the dosing pump and then to a power outlet.
4.2 App Download and WiFi Connection
The Smart Doser MD-4.5 can be controlled via a mobile application. Download the official Jebao/Jecod app from your device's app store:
Follow the in-app instructions to connect your MD-4.5 to your home WiFi network. The device supports Smart AP mode, meaning a router may not be required for initial setup or direct connection in some cases.
4.3 Initial Calibration/Priming
Before first use, it is recommended to prime the pump heads and calibrate the dosing volume for each channel. Refer to the app's calibration section for detailed steps. This typically involves running a small amount of liquid through each channel and verifying the dispensed volume.
5. Operating Instructions
The MD-4.5 offers both automatic and manual control options:
5.1 Automatic Dosing (via App)
- Open the Jebao/Jecod app and select your MD-4.5 device.
- Navigate to the dosing schedule or program settings.
- For each channel (CH1-CH5), set the desired dosing volume (e.g., ml) and frequency (e.g., daily, weekly, multiple times a day).
- Save your settings. The pump will now automatically dispense the specified liquids according to your schedule.
- Monitor the liquid levels in your dosing containers regularly.
5.2 Manual Control
For immediate or temporary dosing, you can use the manual control function:
- Via App: The app typically provides a manual override option where you can select a channel and initiate a single dose or continuous flow for a set duration.
- On Device: Some models may have physical buttons (e.g., CH1-CH5) for manual priming or a quick dose. Refer to the device's physical interface for specific manual control options.
6. Maintenance
Regular maintenance ensures the longevity and accuracy of your dosing pump:
- Tubing Inspection: Periodically check all dosing tubes for kinks, blockages, or signs of wear. Replace any damaged tubing promptly.
- Pump Head Cleaning: If dosing accuracy decreases or flow is inconsistent, the pump heads may need cleaning. Disconnect power, remove the pump head covers, and clean any residue from the rollers and tubing.
- Calibration Check: Re-calibrate your dosing channels every few months or if you notice discrepancies in your aquarium's water parameters.
- Power Supply: Ensure the power adapter is free from damage and connected securely.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump not dosing | No power; tubing kinked/blocked; empty dosing container; incorrect schedule. | Check power connection; inspect tubing; refill container; verify app schedule. |
| Inaccurate dosing volume | Pump head wear; air bubbles in tubing; incorrect calibration. | Clean/replace pump head tubing; remove air bubbles; re-calibrate pump. |
| WiFi connection issues | Incorrect WiFi password; device too far from router; network interference. | Re-enter WiFi credentials; move device closer to router; restart router/device. |
| Pump making unusual noise | Worn pump head; foreign object in pump head. | Inspect and clean pump head; replace worn parts if necessary. |
8. Specifications
| Attribute | Value |
|---|---|
| Model | MD-4.5 |
| Power Consumption | 8 W |
| Dosing Capacity | 4 x 50ml/min (per channel) |
| Max Head (Hmax) | 1.5 m |
| Dimensions (L x W x H) | 22 x 9 x 8 cm (approx. 26.5 x 6.2 x 6.0 cm as per diagram) |
| Power Adapter | DC 12V |
| Voltage | 110-240V (Input for adapter) |
| Material | Stainless Steel (internal components/housing) |
| Battery Included | No |
| High-concerned chemical | None |
| Origin | Mainland China |

9. User Tips
- Label Your Tubes: Clearly label each dosing tube to avoid confusion between different supplements.
- Elevate Dosing Containers: Placing your dosing containers slightly above the pump can help with consistent flow and reduce strain on the pump.
- Regular Water Testing: Even with automatic dosing, regular water parameter testing is crucial to ensure your dosing regimen is effective and to catch any potential issues early.
- Backup Power: Consider connecting your dosing pump to a UPS (Uninterruptible Power Supply) to prevent missed doses during power outages.
- Check for Air Bubbles: Air bubbles in the dosing lines can lead to inaccurate dosing. Periodically check and remove any trapped air.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the retailer or manufacturer directly. Keep your purchase receipt as proof of purchase.






