1. Introducció
The Einhell AQUINNA 18/28 Power X-Change garden pump is a cordless, battery-powered device designed for pumping water in various garden applications. It is part of the Einhell Power X-Change system, allowing for flexible use of compatible batteries and chargers (sold separately). This manual provides essential information for the safe and efficient operation, setup, and maintenance of your garden pump.
Please read these instructions carefully before using the pump for the first time and keep them for future reference.

Figure 1: The Einhell AQUINNA 18/28 Power X-Change garden pump, showcasing el seu disseny compacte i la nansa integrada.
2. Instruccions de seguretat
Always observe the following safety precautions to prevent injury and damage to the pump.
Seguretat general
- Llegiu totes les instruccions abans d'utilitzar.
- Assegureu-vos que la bomba estigui col·locada en una superfície estable i plana.
- Do not operate the pump without water, as this can cause damage.
- Mantingueu els nens i les persones no autoritzades allunyats de la zona d'operació.
- Wear appropriate personal protective equipment (PPE) if necessary.
Electrical Safety (Battery)
- Only use original Einhell Power X-Change batteries and chargers.
- Do not expose batteries to water, heat, or direct sunlight.
- Store batteries in a dry place at room temperature.
- Remove the battery from the pump before any cleaning, maintenance, or storage.

Figure 2: Illustration indicating that the battery and charger are not included with the pump and must be purchased separately.
3. Components mésview
Familiarize yourself with the main components of your Einhell AQUINNA 18/28 garden pump:
- Nansa de transport: Per facilitar el transport.
- Compartiment de la bateria: For inserting the Power X-Change battery.
- Interruptor d'encesa/apagada/mode: To control pump operation and select power modes.
- Water Filling Screw: For filling the pump housing with water before operation.
- Suction Connection (Inlet): Threaded connection for the suction hose.
- Pressure Connection (Outlet): Threaded connection for the discharge hose.
- Water Drain Screw: For emptying the pump, especially for frost protection.
- Forats de muntatge: For securing the pump in a fixed location.

Figura 3: Primer pla view of the robust metal threaded connections for suction and pressure hoses on the pump.
4. Configuració
4.1 Instal·lació de la bateria
- Obriu la tapa del compartiment de la bateria.
- Insert a charged Einhell Power X-Change 18V battery into the compartment until it clicks into place.
- Tanqueu bé la tapa del compartiment de la bateria.

Figure 4: Demonstrating the correct method for inserting a Power X-Change battery into the pump's battery compartment.
4.2 Connexió de mànegues
- Mànega d'aspiració: Connect a suitable suction hose (minimum 1 inch diameter recommended) to the suction connection (inlet) of the pump. Ensure all connections are airtight to prevent air intake, which can reduce pump performance. The maximum suction depth is 6 meters.
- Mànega de descàrrega: Connect a discharge hose to the pressure connection (outlet) of the pump. Secure all connections with appropriate clamps si cal.
4.3 Cebament de la bomba
Before initial operation, the pump housing must be filled with water to ensure proper function and prevent damage.
- Remove the battery from the pump.
- Unscrew the water filling screw located on the top of the pump.
- Carefully fill the pump housing with clean water until it overflows.
- Replace and tighten the water filling screw securely.

Figure 5: Close-up of the red water filling screw, used to prime the pump with water before operation.
5. Instruccions de funcionament
5.1 Engegada de la bomba
- Ensure the pump is primed and all hoses are securely connected.
- Inseriu una bateria carregada.
- Move the On/Off/Mode switch to the desired operating mode.

Figure 6: Detail of the On/Off/Mode switch, allowing selection between ECO and BOOST modes.
5.2 modes d’alimentació
- Mode ECO: Provides maximum battery life with reduced pump pressure. Ideal for lighter watering tasks or when extended run time is required.
- Mode BOOST: Delivers maximum pump power and pressure (up to 2.5 bar, 25m head). Suitable for demanding applications or when higher flow rates are needed.
5.3 Parada de la bomba
To stop the pump, move the On/Off/Mode switch to the "OFF" position. For extended breaks or when finished, remove the battery.

Figure 7: The Einhell AQUINNA 18/28 pump in use, demonstrating its application for garden irrigation from a water source.
6. Manteniment
Un manteniment regular garanteix la longevitat i el rendiment òptim de la bomba.
6.1 Neteja
- After each use, clean the exterior of the pump with a damp tela.
- Periodically check the suction filter (if installed) for debris and clean as necessary.
- Ensure no foreign objects enter the pump's inlet or outlet.
6.2 Protecció contra les gelades
To prevent damage from freezing temperatures, completely drain the pump before storing it for winter or in cold conditions.
- Traieu la bateria.
- Desconnecteu totes les mànegues.
- Unscrew the water drain screw located at the bottom of the pump.
- Allow all water to drain completely. Tilt the pump if necessary.
- Replace and tighten the water drain screw.

Figure 8: Close-up of the water drain screw, essential for emptying the pump to prevent frost damage during cold weather.
6.3 Emmagatzematge
Store the pump in a dry, frost-free location, out of reach of children. Ensure the battery is removed before storage.
7. Solució De Problemes
This section addresses common issues you might encounter with your garden pump.
| Problema | Causa possible | Solució |
|---|---|---|
| La bomba no arrenca. | Battery not inserted or discharged. | Inseriu una bateria carregada. |
| Interruptor d'encesa/apagada en la posició "OFF". | Move switch to "ECO" or "BOOST". | |
| La bomba funciona però no subministra aigua. | Pump not primed (air in housing). | Prime the pump by filling with water (Section 4.3). |
| Suction hose not airtight or too long. | Check all suction connections for leaks. Shorten hose if excessively long. | |
| Suction height too great (over 6m). | Reduce suction height or move pump closer to water source. | |
| Reduced pump performance. | Filtre d'aspiració obstruït. | Netegeu el filtre d'aspiració. |
| Càrrega de la bateria baixa. | Recarregueu o substituïu la bateria. | |
| La bomba s'atura inesperadament. | Protecció de sobrecàrrega activada. | Allow pump to cool down. Check for blockages in hoses or pump. |
8. Especificacions tècniques
| Característica | Especificació |
|---|---|
| Model | AQUINNA 18/28 |
| Número de part | 4180440 |
| Voltage | 18 V (Power X-Change) |
| Màx. Velocitat de flux | 2800 Liters per Hour |
| Alçada màxima de la bomba (capçal) | 25 metres (2.5 bar) |
| Max. Suction Depth | 6 metres |
| Dimensions del producte (L x A x A) | 17.52" x 6.1" x 8.27" |
| Pes de l'article | 2.55 kg (5.61 lliures) |
| Material | Metal (connections) |
| Components inclosos | Battery Garden Pump, Key for Water Fill and Drain Screw |
| Bateria i carregador | Not included (Power X-Change system) |
9. Garantia i Suport
Informació de la garantia
Einhell products are manufactured to high-quality standards and undergo strict quality controls. The warranty period for this product is typically 2 years from the date of purchase, as per EU regulations for spare part availability. Please retain your proof of purchase for any warranty claims.
The warranty does not cover damage caused by improper use, normal wear and tear, or failure to follow the instructions in this manual.
Atenció al client
For technical assistance, spare parts, or warranty inquiries, please contact your local Einhell service center or visit the official Einhell website. Contact details can usually be found in the packaging or on the Einhell corporate weblloc.





