OASE Waterfall Pump 3700 / 5150

Welcome

Welcome to OASE Living Water. You have made an excellent choice with the purchase of this Waterfall Pump 3700 / 5150. Prior to operating the unit, please read these operating instructions carefully and familiarize yourself thoroughly with the unit. Ensure that all work on and with this unit is carried out strictly in accordance with these instructions for safe and correct handling of the product. Keep these instructions in a safe place and pass them on to a new owner if the unit is transferred.

Parts Included

Diagram showing the pump unit (A) and a separate tubing adapter (B).

Warnings and Cautions Symbols

The symbols used in this manual have the following meanings:

• ⚠️ Risk of injury to persons due to dangerous electrical voltage. This symbol indicates an imminent danger, which can lead to death or severe injuries if appropriate measures are not taken.
• ⚠️ Risk of personal injury caused by a general source of danger. This symbol indicates an imminent danger, which can lead to death or severe injuries if appropriate measures are not taken.
• ℹ️ Important! The unit is equipped with a permanent magnet. The magnetic field may affect the function of pacemakers.
• ℹ️ Important information for trouble-free operation.

Intended Use

The Waterfall Pump 3700 / 5150 (referred to as "unit") may only be used as specified:

• For pumping normal pond water for filters, waterfalls, and water courses.
• Operation must adhere to the technical data provided.

Restrictions:

• ❌ Do not use in swimming pools.
• ⚠️ CAUTION - This pump has been evaluated for use with water only.
• ❌ Never run the unit without water.
• ❌ Do not use for commercial or industrial purposes.
• ❌ Do not use in conjunction with chemicals, food products, easily flammable or explosive substances.
• ❌ Do not connect to the domestic water supply.
• ❌ Do not exceed the voltage shown on the pump.
• Inspect the power cord for damage before installation and maintenance.
• Do not remove the grounding pin from the power cord plug.

Use other than that intended: This unit can be dangerous and cause harm if not used in accordance with these instructions. Any use not in accordance with these instructions or modification(s) to the unit will void the limited warranty.

Installation

⚡ WARNING: Risk of electric shock. This pump is supplied with a grounding conductor and grounding-type attachment plug. To reduce the risk of electric shock, be certain that it is connected only to a properly grounded, grounding-type receptacle.

Important Notes:

• Always place the unit below water level.
• It is recommended to place the unit horizontally on the ground ensuring its stable position.
• Do not lift the pump by its power cord. Use the handle to lift and maneuver the pump.

Steps:

1. For maximum water flow, it is recommended that the largest tubing size for your pump is used. If needed, cut the adapter as shown using a hacksaw; consult packaging for tubing size. Diagram showing an adapter being cut with a hacksaw.
2. Attach the adapter to the pump first, then connect tubing to the adapter. NOTE: Tubing is NOT INCLUDED. Diagram illustrating the pump, adapter, and tubing connection.
3. Attach the other end of the tubing to the desired water feature or spillway.

Start-up

⚠️ Attention! The pump must never run dry. Possible consequences: The pump will be destroyed.

Protective measures: Check the water level at regular intervals. Always place the unit below water level.

⚠️ Attention! The installed temperature sensor automatically turns the pump off if it is overloaded. The pump automatically switches on again once the motor has cooled down. Risk of accident!

Install the unit so that it is not exposed to direct sun radiation (max. 104 °F - 40 °C).

Important:

• The unit switches on automatically when power connection is established.

1. Switching on: Connect power plug to the socket. Diagram showing a power plug being inserted into a socket.
2. Switching off: Disconnect the power plug.

Maintenance and Cleaning

⚡ Attention! Dangerous electrical voltage. Possible consequences: Death or serious injuries.

Protective measures:

• For electrical units and installations with a rated voltage of U > 12 V AC or U >30 V DC located in the water: Isolate the units and installations (switch off and disconnect from the power supply) before reaching into the water.
• Isolate the unit before starting any work.
• Secure the unit to prevent unintentional switching on.

⚠️ WARNING: This pump uses a very strong magnet to achieve superior performance. When removing the impeller assembly, there will be considerable magnetic force resisting extraction. This is normal. Likewise, when replacing the impeller assembly, there will be a strong magnetic force pulling the assembly into the pump, potentially causing injury to fingers and, in rare cases, damaging the ceramic shaft or rear bearing. Use thick gloves when replacing the impeller assembly.

Cleaning the unit:

• Regular cleaning may be necessary depending upon the environment. Clean the pump when it is visibly soiled or when a drop in performance is detected. Clean the unit with warm water using a soft brush.
• Never use aggressive cleaning agents or chemical solutions, as these could attack the housing surface or impair function.
• For stubborn furring (calcium deposits), a common household cleaner free from vinegar and chlorine can be used. Subsequently, clean the pump thoroughly with warm water.

Cleaning the pump:

1. Disconnect the pump from the power source. Disconnect the tubing. Diagram showing a power plug being disconnected from a socket.
2. Disassemble the screen and remove the impeller housing to expose the impeller assembly. Diagrams showing pump disassembly steps, revealing the impeller housing.
3. Remove the impeller assembly by pulling on the back round plate behind the impeller.
4. Use a soft cloth or brush to clean the impeller assembly and the inside of the impeller housing. Check parts for damages such as cracked rotor, shaft, or bearing, cracks in the magnet, and broken plastics. Replace parts if necessary. Diagram showing cleaning of the impeller assembly.
5. Reassemble in the reverse order.

Storage/Winterization

• Cease operation when water temperatures drop below 46 °F (8 °C), or when freezing temperatures are expected.
• Thoroughly clean the unit and check for damage.
• Ensure the storage place is inaccessible to children.

Wear Parts and Disposal

Wear Parts: The impeller unit is a wear part and is excluded from the warranty.

Disposal: Do not dispose of this unit with domestic waste! Disable the unit beforehand by cutting off the cables. Further information about recycling can be obtained from your local municipal authority.

Troubleshooting

Technical Specifications

Parts Diagram:

Diagram showing an exploded view of the Waterfall Pump with numbered parts: 1. Screen, 2. Impeller housing, 3. Impeller assembly, 4. O-ring, 5. 1 1/2 in., 2 in. ID tubing adapter.