Tools / Power Tools
Bosch GardenPump 18 Cordless Water Pump User Manual
Quick guide for the Bosch GardenPump 18 cordless water pump. Includes setup, installation, operation, battery care, and troubleshooting.
Table of contents
Quick guide from the manual
The Bosch GardenPump 18 is designed for pumping rainwater from a water tank to irrigate flower beds, lawns, and vegetable beds. It can also be used for minor cleaning tasks. The system consists of a pump, a battery control unit, and a battery.
Installation and Setup
1. Mounting the Control Unit: Fasten the wall attachment or water tank attachment in a shaded spot. The control unit is equipped with a thermal circuit and will switch off if it gets too hot.
2. Determining Cable and Hose Length: Position the pump approximately 50 mm above the base of the tank to avoid sediment. Calculate the required cable length (L1 = H + D + E – 250 mm) and hose length (L2 = H – 130 mm).
3. Assembly: Wrap excess cable around the pump and secure it with the cable clamp. Cut the connecting hose to the calculated length and attach the anti-siphon connector. Connect the 2-pin plug to the control unit and secure the union nut. Attach the universal connector to the pump.
Operation
Switching On/Off: Press the On/Off switch. The battery charge indicator will light up.
Timer Function: While the pump is on, press the timer button. Each press increases the running time by 5 minutes, up to a maximum of 15 minutes. The selected time is indicated by the timer LED.
Dry-Run Protection: The pump automatically switches off if no more water can be pumped.
Maintenance and Cleaning
Filter: Regularly inspect and clean the filter located at the bottom of the pump. Pull it off downwards, clean under running water, and reattach.
Anti-Siphon Connector: If blocked, remove the cap and ball, clean under running water, and reassemble.
Winter Storage: Remove the pump from the water tank, disconnect the cable and hose, drain all water, clean the exterior, and store in a frost-free environment.
Troubleshooting
If the warning triangle flashes red, the battery is too hot or cold. If it flashes yellow, the dry-run protection is activated; reposition the pump so it is fully submerged.
Manufacturer information
Bosch
Practical help
Common problems
Warning triangle flashes red
Battery is too hot or too cold. Allow it to cool or warm up.
Warning triangle flashes yellow
Dry-running protection is activated. Reposition the pump so it is fully submerged.
Pump does not start
Ensure the battery control unit cover is fully closed and locked, the battery is inserted correctly, and the cable is firmly connected.
Pump runs but with limited or pulsating pressure
Check for a clogged filter, insufficient water level, air in the pump/hose, or a kinked hose.
Before use
- Ensure the water tank is closed with a lid to prevent children or animals from falling in.
- Check that the pump and accessories are in perfect condition.
- Ensure the control unit is mounted in a shaded area.
- Fully charge the battery before first use.
- Ensure the pump is positioned 50 mm above the tank base.
Specs in practice
- Max. submersion depth
- 1.8 m
- Max. water temperature
- 35 °C
Model compatibility
- Use only with the GardenPump 18 battery control unit.
- Do not use in swimming pools.
- Do not use at altitudes above 2000 m above sea level.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.