HW 604 Inox - Water pump AL-KO - Free user manual and instructions
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| Product type | Garden water pump |
| Brand | AL-KO |
| Model | HW 604 Inox |
| Material | Stainless steel (Inox) |
| Power | 600 W |
| Max. flow rate | 3400 L/h |
| Max. pressure | 4 bar |
| Max. suction height | 7 m |
| Max. delivery head | 40 m |
| Connections | 1" male / 1" female garden hose |
| Water temperature | Up to 35 °C |
| Protection class | IPX4 |
| Motor type | Brushed motor with thermal protection |
| Suction filter | Integrated stainless steel strainer |
| Dimensions (L × W × H) | 30.5 × 20 × 25 cm |
| Weight | 6.8 kg |
| Power cable | 1.5 m with Schuko plug |
| Features | Self-priming, dry-run protection |
| Maintenance | Clean strainer regularly; drain after use |
| Spare parts | Impeller, seals, and valve kits available |
Frequently Asked Questions - HW 604 Inox AL-KO
How do I prime the AL-KO HW 604 Inox?
Before start, fill the pump housing with water through the priming port. Open the suction valve, keep the delivery valve slightly open, and switch on. The pump is self-priming up to 7 m.
What is the maximum suction depth?
The maximum suction height is 7 meters. For reliable priming, keep the suction hose as short and straight as possible and use rigid pipes with a foot valve.
Can the pump run dry?
No, the dry run protection will stop the motor, but prolonged dry running can damage the mechanical seal. Always ensure the suction hose is submerged.
How to winterize the pump?
Drain all water from the pump and piping, disconnect the suction and deliver hoses, and store the pump in a frost-free room. Use a drain plug if present.
What type of water can I pump?
This pump is designed for clean water (rainwater, tap water) without abrasive particles. Do not pump seawater, chemicals, or flammable liquids.
How to clean the suction strainer?
Disconnect the pump from the power supply and remove the strainer on the suction side. Rinse it under running water with a plastic brush. Reinstall it securely.
Why does the pump lose prime?
Check for air leaks in the suction line, low water level, or a clogged foot valve. Also verify that the pump is not sucking in air through the shaft seal.
How to replace the impeller?
Disconnect power, undo the pump housing bolts, and remove the diffuser. Take out the impeller, note its orientation, and install the new one. Use a torque wrench for reassembly.
What is the recommended hose diameter?
Use a 1-inch suction hose and a 1-inch delivery hose. Reducing to smaller diameters will reduce the flow rate and pressure.
Does the pump have a pressure switch?
No, the HW 604 Inox is a manual pump without an automatic pressure switch. A separate pressure tank or switch can be added for automatic operation.
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USER MANUAL HW 604 Inox AL-KO
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Product information
Brand : AL-KO
Model : HW 604 Inox
Category : Water pump