DEKO 400W-BL
DEKO Submersible Water Pump 400W Instruction Manual
Model: 400W-BL
Brand: DEKO
Safety Information
Please read all safety warnings and instructions carefully before operating the pump. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
- Always disconnect the pump from the power supply before handling or performing any maintenance.
- Do not operate the pump with a damaged cord or plug.
- Ensure the power supply matches the voltage specified on the pump's rating label.
- Never lift the pump by its power cord. Use the handle provided.
- This pump is designed for pumping water only. Do not use it for flammable liquids, corrosive chemicals, or sewage containing large solid particles beyond specified limits.
- Keep children and unauthorized persons away from the operating area.
- Ensure the pump is fully submerged during operation to prevent overheating.

Product Overview
Description
The DEKO 400W Submersible Water Pump is a versatile and portable solution for efficient water drainage. Designed for both clean and dirty water, it is ideal for emptying pools, garden ponds, cellars, and ditches. Its robust construction and automatic float switch ensure reliable and safe operation.
Key Features
- Powerful Performance: Max. drainage flow of 8000 L/h, Max. pump height up to 5m, Max. submersion depth of 7m. Easily passes solids up to 35mm in diameter.
- Multi-Outlet Size: Compatible with 1", 1-1/4", G1", and G1-1/2" hose and threaded pipe connections for various applications.
- Automatic Float Switch: Senses water level to automatically start/stop the pump, preventing idling and ensuring efficient operation. Lowest suction level is 35mm.
- Safe and Durable: Constructed from high-quality thermoplastic composite material for corrosion, acid, alkali, and water resistance. Features built-in overheat protection.
- Lightweight and Portable: Weighs only 3.7kg with a 10-meter power cord, making it easy to transport and set up.

Components
The DEKO Submersible Water Pump comes with the following main components:
- Pump Unit with Integrated Motor
- Float Switch with Cable
- Power Cable with Plug
- Multi-size Outlet Adapter (Elbow and threaded connector)


Setup
- Attach the Outlet Adapter: Screw the multi-size outlet adapter onto the pump's discharge port. Ensure it is securely tightened to prevent leaks.
- Connect the Hose: Attach your drainage hose to the appropriate size on the outlet adapter. Use a hose clamp to secure the connection if necessary.
- Position the Pump: Place the pump on a stable, flat surface in the area to be drained. Ensure the pump is fully submerged in water before starting.
- Position the Float Switch: The float switch controls the pump's automatic operation. Ensure it can move freely and is not obstructed by walls or debris. The pump will start when the float switch rises to a certain level and stop when it drops.
Operating Instructions
- Submerge the Pump: Carefully lower the pump into the water, ensuring it is fully submerged and resting on a stable surface.
- Plug In: Connect the pump's power plug to a suitable electrical outlet.
- Automatic Operation: The pump will automatically start when the water level rises, causing the float switch to float upwards (typically when the water level is approximately 50cm above the pump base). It will stop when the water level drops and the float switch lowers (down to approximately 25cm above the pump base, or 35mm by manual control).
- Monitor Drainage: Observe the water drainage to ensure proper operation. The pump is capable of handling solids up to 35mm.
- Manual Operation (if applicable): For continuous operation or to drain water to the lowest possible level (35mm), you may need to manually hold the float switch in the 'on' position or secure it upwards. Refer to the float switch diagram for working and stop states.


Maintenance
Regular maintenance ensures the longevity and optimal performance of your DEKO water pump.
- Cleaning: After each use, especially when pumping dirty water, rinse the pump thoroughly with clean water. Remove any debris or foreign objects from the suction port and impeller area.
- Inspection: Periodically inspect the power cord and plug for any signs of damage. Check the float switch for free movement.
- Storage: When not in use, store the pump in a dry, frost-free location. Ensure it is clean and free of water to prevent freezing damage.
- Winterization: If storing for an extended period or in cold climates, ensure all water is drained from the pump and hose to prevent damage from freezing.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power supply Float switch not activated Overheat protection activated Impeller jammed | Check power connection and fuse Ensure float switch is free and at correct level Allow pump to cool down Disconnect power, clear debris from impeller |
| Low pumping capacity | Partial blockage in suction/discharge Hose kinked or too long/narrow Air in pump | Clean suction port and hose Use appropriate hose, straighten kinks Submerge pump fully, tilt slightly to release air |
| Pump runs but no water is discharged | Pump not fully submerged Air lock Discharge hose blocked | Ensure pump is completely in water Tilt pump to release trapped air Check and clear discharge hose |
| Pump stops unexpectedly | Float switch dropped Overheat protection Power interruption | Check water level and float switch position Allow pump to cool Check power supply |
Specifications
| Specification | Value |
|---|---|
| Model Number | 400W-BL |
| Power Consumption | 400W |
| Power Supply | 240V 50Hz |
| Max. Flow Rate | 8000 L/H |
| Max. Pump Height | 5m |
| Max. Submersion Depth | 7m |
| Max. Particle Size | 35mm |
| Cable Length | 10m |
| Weight (approx.) | 3.7 kg |
| Material | Thermoplastic Composite |
| Product Dimensions | 17 x 15.8 x 33 cm |

Warranty and Support
For warranty information or technical support, please refer to the documentation included with your purchase or contact DEKO customer service directly. Keep your purchase receipt as proof of purchase.
You can often find support contact details on the official DEKO website or through the retailer where you purchased the product.
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