1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the DOPZNJWF QB60 DC Water Pump, specifically the 24V model. Please read this manual thoroughly before using the pump to ensure proper function and longevity.
1.1 Product Overview
The DOPZNJWF QB60 series DC Water Pump is a brushed motor booster pump designed for various industrial and domestic applications. It features a robust design for reliable performance and ease of maintenance.
1.2 Key Features
- Wide Range of Applications: Suitable for diverse industrial and general water transfer needs.
- Automatic Pressure Preservation: Designed to automatically adjust pressure to maintain a consistent output.
- Easy Maintenance: Simple structure facilitates straightforward maintenance procedures.
- Superior Performance: Delivers high output pressure and offers strong adjustability, constructed with durable materials.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the pump.
- Ensure the power supply matches the pump's voltage (24V DC for this model). Incorrect voltage can cause severe damage.
- Disconnect power before performing any installation, maintenance, or troubleshooting.
- Do not operate the pump dry. Ensure the pump is primed with water before starting to prevent damage to internal components.
- Install the pump in a well-ventilated area, protected from direct sunlight, rain, and extreme temperatures.
- All electrical connections must be made by a qualified professional and comply with local electrical codes.
- Keep children and unauthorized personnel away from the pump during operation.
3. Product Components and Dimensions
The QB60 DC Water Pump comes with essential components for installation and operation. Familiarize yourself with the pump's structure and dimensions.

Figure 3.1: DOPZNJWF QB60 DC Water Pump (Main Unit)

Figure 3.2: QB60 DC Water Pump with included accessories, typically including connectors, seals, and a filter.

Figure 3.3: Dimensions of the QB60 DC Water Pump. Approximate measurements are 242mm (length), 150mm (height), and 115mm (width). The outlet has an inner diameter of 25mm and an outer diameter of 42mm.
4. Specifications
Technical specifications for the QB60 series, with specific details for the 24V model.

Figure 4.1: Specifications for QB60-12V, QB60-24V, and QB60-48V models.
| Specification | Value |
|---|---|
| Model | QB60-24V |
| Voltage | 24V DC |
| Power | 280W |
| Max. Head | 20m |
| Max. Flow | 1.5 m³/h |
| Outlet Size | 1 Inch / 25mm |
| Item Weight | 6.61 pounds (approx. 3000 Grams) |
| Package Dimensions | 1.18 x 0.79 x 0.39 inches (shipping package) |
| Manufacturer | DOPZNJWF |
| Assembly Required | No |
5. Installation (Setup)
Proper installation is crucial for the pump's performance and safety.
5.1 Mounting the Pump
- Choose a stable, level surface for mounting the pump.
- Ensure the location is dry, well-ventilated, and protected from environmental elements.
- Secure the pump using appropriate fasteners through the mounting holes on its base.
5.2 Plumbing Connections
- Connect the suction pipe to the pump's inlet and the discharge pipe to the outlet. Ensure all connections are airtight to prevent air leaks, which can affect pump performance.
- Use appropriate thread sealant or PTFE tape on all threaded connections.
- Install a foot valve with a strainer at the end of the suction pipe in the water source to prevent debris from entering the pump and to maintain prime.
- Ensure the pipe diameters are compatible with the pump's inlet/outlet (1 inch / 25mm).
5.3 Electrical Connections
- Verify that the power supply is 24V DC.
- Connect the positive (+) wire from the power supply to the positive terminal on the pump and the negative (-) wire to the negative terminal. Observe correct polarity.
- Ensure all electrical connections are secure and insulated to prevent short circuits.
- Consider installing an appropriate fuse or circuit breaker for overcurrent protection.
6. Operation
Follow these steps for safe and effective operation of your QB60 DC Water Pump.
6.1 Priming the Pump
Before the first use or after the pump has been drained, it must be primed.
- Ensure all plumbing connections are tight.
- Open the priming port (if available) or slowly fill the pump casing with water until it is full.
- Close the priming port securely.
- Ensure the suction pipe is fully submerged in the water source.
6.2 Starting the Pump
- Once primed, connect the pump to the 24V DC power supply.
- The pump should start automatically or can be manually switched on if an external switch is installed.
- Monitor the pump for the first few minutes to ensure water flow and check for any leaks or unusual noises.
6.3 Stopping the Pump
To stop the pump, disconnect it from the 24V DC power supply or switch off the external power switch.
7. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your pump.
7.1 Routine Checks
- Check for Leaks: Periodically inspect all plumbing connections for leaks. Tighten or re-seal as necessary.
- Inspect Power Cable: Ensure the power cable is not damaged or frayed.
- Clean Strainer/Filter: If a foot valve with a strainer is used, regularly clean it to prevent blockages and maintain flow.
- Listen for Unusual Noises: Any new or unusual noises may indicate a problem requiring attention.
7.2 Winterization (if applicable)
If the pump is exposed to freezing temperatures, drain all water from the pump and pipes to prevent damage from ice expansion. Store the pump in a warm, dry place.
8. Troubleshooting
Refer to the following table for common issues and their potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power supply Incorrect wiring Motor fault | Check power connection and voltage Verify correct polarity (+/-) Consult a qualified technician |
| Pump runs but no water flows | Pump not primed Air leak in suction line Suction line blocked Foot valve/strainer clogged | Prime the pump Check and tighten all suction connections Clear any blockages in the suction line Clean the foot valve/strainer |
| Low water flow or pressure | Partial blockage Air in the system Excessive head/lift Worn impeller | Check for and clear partial blockages Re-prime the pump, check for leaks Ensure installation is within pump's specifications Consult a qualified technician |
| Pump is noisy | Cavitation (air in pump) Loose mounting Bearing wear | Ensure pump is fully primed and no air leaks Tighten mounting bolts Consult a qualified technician |
9. Disposal
When the pump reaches the end of its service life, dispose of it responsibly according to local environmental regulations. Do not dispose of electrical appliances with general household waste. Contact your local authorities for information on recycling and disposal options.