AL-KO HW 604 - Water pump

HW 604 - Water pump AL-KO - Free user manual and instructions

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Product Type Submersible dirty water pump
Brand AL-KO
Model HW 604
Power consumption 600 W
Supply voltage 230 V ~ 50 Hz
Max flow rate 14,000 l/h
Max delivery head 6 m
Max immersion depth 5 m
Max particle size 25 mm
Discharge connection 1 1/2" (38 mm)
Protection type IP68
Protection class IPX8
Dimensions (L x W x H) 200 x 200 x 380 mm
Net weight 5.8 kg
Cable length 10 m
Automatic operation Adjustable float switch
Thermal safety Motor overheat protection
Housing material Reinforced plastic
Maintenance Regular cleaning of filter and impeller
Spare parts Available (impeller, seal, non-return valve)
Repairability Repairability score higher than 8/10 according to regulations

Frequently Asked Questions - HW 604 AL-KO

How to prime the AL-KO HW 604 pump?
The pump is self-priming up to 1 m height. For first use, immerse it completely in water before starting.
What to do if the pump does not start?
Check the power supply, that the float is in the high position (not blocked), and that the pump is not clogged with debris. Refer to the troubleshooting section of the manual.
Can the pump be used dry?
No, the pump must never run dry. It may damage the mechanical seal and motor. Use it only submerged.
What is the maximum size of pumpable particles?
The pump can handle particles up to 25 mm in diameter (gravel, leaves, etc.). Beyond that, an upstream filter is recommended.
How to clean the pump after use?
Rinse it with clean water to remove residues. Do not use abrasive products. Check and clean the suction strainer regularly.
Does the pump have overheat protection?
Yes, a thermal protector automatically stops the motor in case of overheating. After cooling, the pump restarts automatically.
What is the maximum flow rate of the HW 604?
The maximum flow rate is 14,000 liters per hour, measured at zero delivery head.
Can a 1-inch hose be connected to the outlet?
The outlet connection is 1 1/2'' (38 mm). Use a reducer if necessary, but this will reduce the flow rate.
Where to find spare parts for the HW 604?
Spare parts (impeller, seal, valve) are available from AL-KO authorized dealers or online. Refer to the parts list in the manual.
How to adjust the float switch?
The float can be locked on the handle to adjust the on/off levels. Follow the instructions in the manual to avoid improper operation.

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How to prime the AL-KO HW 604 pump?
Frequently Asked Questions - 06/21/2026
Response Notice-Facile

Priming your AL-KO HW 604 jet pump is an essential step before first use or after a prolonged stop. Here is the procedure:

Priming Steps:

  • Fill the pump body with clean water through the filling cap (usually located on the top or side of the pump).
  • Ensure that the check valve is functioning properly - water should not escape back.
  • Tightly close the filling cap after filling the pump body.
  • Connect the suction hose to the pump inlet (usually marked).
  • Start the motor and let the pump run for a few seconds. Water should start to flow normally at the outlet.

If water does not flow after a few seconds of operation, stop the pump and repeat the priming, ensuring that the pump body is completely filled with water and free of air bubbles.

Tip: A well-primed pump delivers a steady and consistent flow. If you notice fluctuations or interruptions, check the tightness of the connections and the presence of air in the piping.

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Download the instructions for your Water pump in PDF format for free! Find your manual HW 604 - AL-KO and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. HW 604 by AL-KO.

USER MANUAL HW 604 AL-KO

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AL-KO HW 604 - 1

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INFORMATION | MANUALS | SERVICE

HW 604

HW 604 INOX

AL-KO HW 604 - 2

AL-KO HW 604 - 3

AL-KO HW 604 - 4

AL-KO HW 604 - 5

AL-KO HW 604 - 6

AL-KO HW 604 - 7

477218_a | 07/2013

AL-KO HW 604 - 8iHW 604HW 604INOX
Art. Nr.113 119Art. Nr.113 120
AL-KO HW 604 - 9600 W600 W
AL-KO HW 604 - 10230 V AC, 50 Hz230 V AC, 50 Hz
AL-KO HW 604 - 11X4 X4 X4X4 X4 X4
AL-KO HW 604 - 1276 dB (A)76 dB (A)
AL-KO HW 604 - 139 m9 m
AL-KO HW 604 - 1435 m/3,5 bar35 m/3,5 bar
AL-KO HW 604 - 153100 l/h3100 l/h
AL-KO HW 604 - 1635 °C35 °C
AL-KO HW 604 - 171,5/2,8 bar1,5/2,8 bar
AL-KO HW 604 - 1811
AL-KO HW 604 - 19"1"1
AL-KO HW 604 - 2020 l20 l
AL-KO HW 604 - 2111,3 kgnetto11,2 kgnetto

A 1 2 3 4 12 11 5 10 6 9 8 7

B 13 ALIKO 14

AL-KO HW 604 - 24

Einleitung

Please read the operating instructions carefully before you use the domestic water system to prevent accidents and ensure the trouble-free operation of the system. Make sure you keep the instructions at hand for quick reference. If you resell your pump or give it to another user, please include these instructions in the sale or the gift. The following symbols are used in the instructions:

AL-KO HW 604 - Einleitung - 1

DANGER

This symbol draws your attention to work processes or operating procedures that have to be carefully observed in order to prevent serious injury to the user or another person.

AL-KO HW 604 - DANGER - 1

CAUTION

This symbol draws your attention to information you need to ensure that your system is not damaged due to improper or careless use.

AL-KO HW 604 - CAUTION - 1

PLEASE NOTE

The information symbol draws your attention to essential technical requirements.

For your safety

AL-KO HW 604 - For your safety - 1

The domestic water system may only be connected to an electrical device which is compliant with DIN/VDE 0100, Parts 737, 738 and 702 (swimming pools). Make sure that fuse protection in the form of a 10 A automatic cut-out and a fault current guard circuit with a nominal fault current of 10/30 mA is installed.

AL-KO HW 604 - For your safety - 2

The supply voltage and current specified on the type plate must be identical with the voltage and current of your electrical system.

AL-KO HW 604 - For your safety - 3

If you need to connect your domestic water system to an extension cord, make sure that the cable is 3 x 1.5 mm _2 , that it corresponds to type H07RN-F and is compliant with DIN 57282/57245. The connector must be splash-proof. Cable drums must be completely unwound.

AL-KO HW 604 - For your safety - 4

Please make sure that the system is not operated by anyone

- who has not read or does not fully understand the operating instructions or

- is under the age of 16.

AL-KO HW 604 - For your safety - 5

The domestic water system may not be used for any other than its designated use. Before putting the system into operation, make sure that

- the pump, reservoir, the electric cable and the plug are not worn or damaged.

AL-KO HW 604 - For your safety - 6

Do not operate the system if it is damaged. Necessary repairs must be carried out in a qualified AL-KO service centre.

AL-KO HW 604 - For your safety - 7

Never use the electric cable to lift, carry or attach the system to another object. Do not pull on the cable when unplugging the system.

AL-KO HW 604 - For your safety - 8

Make sure that the system is unplugged before beginning any maintenance, repair or cleaning work. In the event of a malfunction, immediately unplug the system. Make sure that the plug does not get wet.

AL-KO HW 604 - For your safety - 9

Do not attempt to make any changes or modifications to the device by yourself. You may endanger your life or invalidate the warranty.

AL-KO HW 604 - For your safety - 10

Risk of injury due to hot water!

The water in the pump can heat up significantly, during longer periods of operation (>10 min) against closed outlet side.

This hazard can occur due to:

– side under compression closed
– lack of water in the suction pipe
- improper installation
– faulty pressure switch

In this case:

– isolate the pump from the mains
- allow the pump and water to cool down
- check water level on inlet side
- check pipes for water-tightness
- check installation
- check pressure switch
- only restart pump after rectifying the cause of the fault

Use

Designated use

The domestic water system is designed for home use in your house or garden. Please observe the technical data given in the instructions before putting the system into operation. Your domestic water system has been designed for use in the following applications:

  • irrigation and watering, e.g. of your lawn or flower and vegetable gardens
    – domestic water supply
  • increasing pressure in the domestic water supply.

Please observe the regulations issued by your local water works. If necessary, ask a plumber. The system is designed to pump only the following liquids:

- clear water

- rain water

Prohibited use

Your domestic water system is not intended for permanent operation. The system may not be used to pump the following liquids:

  • saltwater
  • beverages or liquid foods
  • corrosives or chemicals
  • acids or combustible, explosive or gas-forming liquids
    – liquids with a temperature above 35 °C
  • sandy water or water containing abrasives

Description of the system

Domestic water system/accessories (Figs. A, B)

1 Pump inlet/suction hose connector
2 Filler screw
3 Pump outlet/pressure hose connector
4 Motor housing
5 Valve
6 Reservoir
7 Pressure gauge
8 Electric cable
9 Draining screw
10 Pressure switch
11 Compensating hose
12 Pump chamber
13 Filter (accessories)
14 AL-KO suction kit (accessories)

Scope of supply

Your domestic water system comes equipped with a pressure switch, a pressure gauge and an electric cable with an earthing-contact type plug.

Function

The domestic water system works automatically. The pump automatically switches on or off depending on the pressure set (see technical data).

The system sucks the liquid to be pumped through the suction hose (1) and lets it out into the reservoir (6). Upon reaching the set cut-out pressure (reservoir is full), the system automatically switches off.

As soon as the pressure falls to below 2,0 bar (water is drained from the reservoir), the system automatically switches back on and continues pumping the liquid until either the reservoir is full or any draining process running has been completed and the reservoir is full.

Thermal protection

Your domestic water system is equipped with a thermal protection switch, which switches the pump off if it overheats. The pump will remain off until it has cooled down. After about 15 - 20 minutes, the pump will automatically switch on.

Setting up and operating the system

AL-KO HW 604 - Setting up and operating the system - 1

Before putting your domestic water system into operation, check the inlet pressure at the diaphragm which can be read out from the valve (5) on the reservoir. Make sure that the pressure is approx. 1.5 bar and correct if required (see Checking the Inlet Pressure).

  • Place the device onto a hard, flat surface so that it cannot tip over and so that it will not be near the flow of water.
  • Make sure that the device is protected from rain and any direct exposure to water.

AL-KO HW 604 - Setting up and operating the system - 2

When attaching the suction and pressure hoses, make sure that they do not exert a tension on the device. We recommend the use of flexible hoses at the pump inlet (1) and outlet (3). If you have any questions, ask your retailer.

AL-KO HW 604 - Setting up and operating the system - 3

When operating the system (automatic operation), take appropriate measures to ensure that damage due to flooding cannot occur if the system should malfunction.

Attaching the suction hose

AL-KO HW 604 - Attaching the suction hose - 1

Choose a hose which is long enough so that the device will not suck in air and run dry. The hose should be at least 30cm under the surface of the liquid to be pumped while the pump is in operation.

Mount a non-return valve in the suction hose to prevent the liquid from running back out of the pump.

- Attach the suction hose. Make sure to screw it in tightly, but take care not to damage the threads.

AL-KO HW 604 - Attaching the suction hose - 2

If the liquid to be pumped is deeper than 4 m, you should use a suction hose which is larger than 1" in diameter for the best performance. We recommend our AL-KO suction set (14), which consists of a suction hose, strainer and non-return valve. The suction set is available at your local retailer's.

AL-KO HW 604 - Attaching the suction hose - 3

Before pumping sandy water, you must insert a filter (13) between the suction hose and the pump inlet or you will damage your domestic water system. The filter is available at your local retailer's.

- When laying the suction hose, make sure that it is lower than the system.

AL-KO HW 604 - Attaching the suction hose - 4

If the suction hose is laid so that it is higher than the device, bubbles will become trapped in the line and the pump will suck air.

Attaching the pressure hose

- Attach the pressure hose. Make sure to screw it in tightly, but take care not to damage the threads.

Filling the pump

AL-KO HW 604 - Filling the pump - 1

Before putting your domestic water system into operation, you must fill the pump chamber with water until it overflows to achieve full suction power. Do not operate the pump while it is dry because this will cause serious damage to the pump.

  • Remove the filler screw (2).
  • Pour water into the opening until the chamber of the pump (12) is full.
  • Replace the filler screw (2) and tighten it.

Switching on the system

  • Open the pressure line (open valve, sprayer, tap, etc.).
  • Plug the electric cable into the socket. The pump will automatically begin to run.
  • As soon as the flow of water is cleared of air bubbles trapped in the line, close the pressure line. When the pressure has fallen and the reservoir is full, the pump will automatically switch off. Your domestic water system is now ready for operation.

Switching off the system

- Switch the system off by unplugging the electric cable from the socket.

Maintenance and Cleaning

AL-KO HW 604 - Maintenance and Cleaning - 1

Before beginning any maintenance or cleaning work, make sure that the device has been unplugged and take precautions to ensure that it cannot be switched on during work!

Cleaning the system

If you have used your domestic water system to pump chlorine water (swimming pool water) or liquids which leave a residue, flush your pump out with clear water after use.

Clearing blockages

If your domestic water system should become blocked so that it does not suction or pump out liquid, remove the obstruction as follows:

  • Remove the suction hose from the pump inlet (1).
  • Attach the pressure hose to the water tap and spray water into the pump chamber until the blockage is flushed out.
  • Check to see that the obstruction has been cleared entirely by switching on the pump for a short time. Do not let the pump suck air.
  • If the pump runs trouble-free, put it into operation as described in the instructions.

Frost protection

Your domestic water system is susceptible to low temperatures. Make sure to empty the device of residual liquid (hoses, pump and reservoir) and store it so that it is protected from frost.

• Empty the suction and pressure hoses.

  • Remove the draining screw (9) and drain all water from the pump chamber. The water contained in the reservoir will be pressed out by the air bellows.
  • Replace the draining screw and store the device so that it is protected from frost.

Setting the pressure switch

The cut-in and cut-out pressures at which the system starts and stops operating have been set in the factory (see technical data). However, if desired, you can adjust the setting as desired at the pressure switch (10), also see Figure C.

  • Unplug the electric cable from the socket.
  • Remove the protective cover from the pressure switch.
  • Use a screwdriver to set the desired pressure:

A= Cut-in pressure

B= Cut-out pressure

Increase pressure = +

Decrease pressure = -

  • Close the pressure switch by replacing the cover.
  • Put the system into operation and check the changed pressures.

AL-KO HW 604 - Setting the pressure switch - 1

Please observe the max. permissible pumping height and pressure; see technical data.

Checking the inlet pressure

  • Unplug the electric cable from the socket.
  • Open the pressure line and drain the water off until the pump is completely empty.
  • Check the inlet pressure at the diaphragm (5).
    The pressure should be approx. 1.5 bar. Correct the pressure if needed.
  • Put the domestic water system into operation as set out in the instructions.

Disposal

AL-KO HW 604 - Disposal - 1

Do not dispose of worn-out units through the household garbage!

The appliance, its packaging and accessories are all produced from recyclable materials and must be disposed of accordingly.

Malfunctions

AL-KO HW 604 - Malfunctions - 1

Before you attempt to remedy any malfunction of your domestic water system, pull the plug to prevent injury or death due to electrocution!

What is wrong?What is the possible reason?What to do:
Motor does not run.Impeller is blocked. Clean the pump.
Thermal switch has switched off.Wait until the thermal switch has automatically switched the pump on again. Check the temperature of the liquid. Have the pump checked.
No power. Have the power supply checked by a qualified electrician.
System runs but does not pump out liquid.Suction hose is not immersed in the liquid to be pumped.Make sure that the suction hose is at least 30 cm beneath the surface.
Suction hose is blocked.DANGER!Risk of injury due to hot water!Clear blockage in suction hose.
Pressure line is blocked.DANGER!Risk of injury due to hot water!Clear blockage in pressure line.
Suction height is too great.Lower suction height.
Pump is dry. Fill the pump with water.
System is only pumping out liquid very slowly or weakly.Suction hose is blocked. Clear the blockage.
Suction height is too great.Lower suction height.
Pumping height is too great.Lower pumping height.
Pump does not run reliably.Air pressure in reservoir is too low.Check the air pressure in the reservoir at the valve (5) and correct to about 1.5 bar if necessary.
Pump fails to switch off automaticallyWater shortage inlet side, Pump sucks in airUnplug the pump, allow to cool down if necessary

AL-KO HW 604 - Malfunctions - 2

If you are unable to remedy a malfunction, please call the AL-KO service centre nearest you.

Introduction

- felaktig installation

- defekt tryckvakt

I detta fall:

Antonio De Filippo, Managing Director

Garantie

EC declaration of conformity

We hereby declare that this product, in the form in which it is marketed, meets the requirements of the harmonised EU guidelines, EU safety standards, and the product-specific standards.

Product

Domestic water system

Serial number

G3043045

Model

HW 604 (601), HW 604 (601) INOX

Sound power level

measured / guaranteed

HW 604 (601),

HW 604 (601) INOX 74/76 dB(A)

Manufacturer

AL-KO Geräte GmbH

Ichenhauser Str. 14

89359 KOETZ

DEUTSCHLAND

EU directives

2006/95/EG

2004/108/EG

2000/14/EG (13)

Conformity evaluation

2000 /14/EG

Appendix V

Executive Officer

Anton Eberle

Ichenhauser Str. 14

89359 KOETZ

DEUTSCHLAND

Harmonised standards

EN 60335-1; VDE 0700-1:2007-02

EN 60335-2-41; VDE 0700-41:2004-12

EN 60335-2-41/A2; VDE 0700-41/A2:2009-02

EN 55014-1; VDE 0875-14-1:2007-06

EN 55014-1/A1; VDE 0875-14-1/A1:2008-12

EN 55014-2; VDE 0875-14-2:2009-06

EN 61000-3-2; VDE 0838-2:2006-10

EN 61000-3-2/A1; VDE 0838-2/A1:2007-05

EN 61000-3-2/A7; VDE0838-2/A7:2007-06

EN 61000-3-2/A4; VDE 0838-2/A4:2007-06

EN 61000-3-3; VDE 0838-3:2009-06

Kötz, 2013-07-26

AL-KO HW 604 - Harmonised standards - 1

Antonio De Filippo, Managing Director

Warranty

If any material or manufacturing defects are found during the statutory customer protection period, we will either repair or replace the equipment, whichever we consider the more appropriate. This statutory period may vary according to the legislation in force in the country where the equipment was purchased.

Our warranty is valid only if: The warranty is no longer valid if:

■ The equipment has been used properly

■ The operating instructions have been followed

■ Genuine replacement parts have been used

■ The equipment has been tampered with

■ Technical modifications have been made

■ The trimmer was not used for its intended purpose (for example, used for commercial or communal applications)

The following are not covered by warranty:

■ Paint damage due to normal wear

■ Wear parts identified by a border XXXXX (X) on the spare parts list

- Combustion motors – these are covered by a separate warranty from the manufacturer concerned

To make a claim under warranty, please take this statement of warranty and proof of purchase to the nearest authorised customer service centre. This warranty does not affect the usual statutory rights of the customer relative to the seller.

Antonio De Filippo, Managing Director

Garantie

Antonio De Filippo, Managing Director

Garanzia

Antonio De Filippo, Managing Director

Garantía

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Garantie

Antonio De Filippo, Managing Director

Garanti

Antonio De Filippo, Managing Director

Garanti

Antonio De Filippo, Managing Director

Takuu

Antonio De Filippo, Managing Director

Záruka

Antonio De Filippo, Managing Director

Záruka

Antonio De Filippo, Managing Director

Garancia

Antonio De Filippo, Managing Director

Gwarancja

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Гарантия

Antonio De Filippo, Managing Director

Гарантія

Antonio De Filippo, Managing Director

Garancija

Antonio De Filippo, Managing Director

Jamstvo

Eventualne greške na materijalu ili greške pri proizvodnji koje se pojave na uređaju otklanjamo za vrijeme zakonskog jamstvenog roka za zahtjeve u slučaju nedostatak po našem izboru u vidu popravke ili zamjenske isporuke. Jamstveni rok određuje se prema zakonu zemlje u kojoj je uređaj kupljen.

Naše jamstvo vrijedi samo u slučaju: Pravo na jamstvo gubi se u slučaju:

■ propisnog rukovanja uređajem
■ poštivanja uputa za rukovanje
■ uporabe originalnih zamjenskih dijelova

Antonio De Filippo, Managing Director

Garanti

Antonio De Filippo, Managing Director

Garantia

Country Company Telephone Fax

AAL-KO Kober Ges.m.b.H.(+43) 3578/2515227(+43) 3578/251538
AUSAL-KO International PTY. LTD(+61) 3/9767-3700(+61) 3/9767-3799
B/LEurogarden NV(+32) 16/805427(+32) 16/805425
BGValerii S&M Group SJ(+359) 2 942 34 02(+359) 2 942 34 10
CHAL-KO Kober AG(+41) 56/4183150(+41) 56/4183160
CZAL-KO Kober Spol.sr.o.(+420) 382/210381(+420) 382/212782
DAL-KO Geräte GmbH(+49) 8221/203-0(+49) 8221/203-138
DKAL-KO Ginge A/S(+45) 98821000(+45) 98825454
EST/LT/LVAL-KO Kober SIA(+371) 67409330(+371) 67807018
FAL-KO S.A.S.(+33) 3/85-763540(+33) 3/85-763588
GBRochford Garden Machinery Ltd.(+44) 1963/828050(+44) 1963/828052
HAL-KO KFT(+36) 29/537050(+36) 29/537051
HRBrun.ko.-prom d.o.o.(+385) 1 3096 567(+385) 1 3096 567
IAL-KO Kober GmbH / SRL(+39) 039/9329311(+39) 039/9329390
INAGRO-COMMERCIAL(+91) 3322874206(+91) 3322874139
IQGulistan Com(+946) 750 450 80 64
IRLCyril Johnston & Co. Ltd.(+44) 2890813121(+44) 2890914220
LYASHOFAN FOR AGRICULT. ACC.(+218) 512660209(+218) 512660209
MABADRA Sarl(+212) 022447128(+212) 022447130
MKTechno Geneks(+389) 2 2551801(+389) 2 2520175
NAL-KO GINGE A/S(+47) 64862550(+47) 64862554
NLO.DE LEEUW GROENTECHNIEK(+31) 38/444 6160(+31) 38/444 6358
PLAL-KO Kober z.o.o.(+48) 61/816 1925(+48) 61/816 1980
ROOMNITECH Technology SRL(+4) 021 326 36 72(+4) 021 326 36 79
RUSOOO AL-KO Kober(+7) 499/168 8718(+7) 499/96600-00
RUSAL-KO St. Petersburg GmbH(+7) 812/4461075(+7) 812/4461075
SAL-KO Ginge Svenska AB(+46) (0) 31573580(+46) (0) 31575620
SKAL-KO Kober Slovakia Spol.s.r.o.(+421) 2/45994112(+421) 2/45648117
SLODARKO OPARA S.P.(+386) 17225858(+386) 17225851
SRBAgromarket doo(+381) 34/300765(+381) 34/354327
TRZIMAS A.S.(+90) 232 4580586(+90) 232 4572697
UATOV AL-KO Kober(+380) 44/4923396(+380) 44/4923397
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Product information

Brand : AL-KO

Model : HW 604

Category : Water pump