Operation:  - A clogged or dirty admission screen is the output of the pump to reduce in general. Therefore, you often need to wash the surrounding rubble. If less flow is needed, place the flow control lever.  - To perform cleaning or maintenance of the pump, first removed, then the front cover and turbine housing of the unit. A small brush will use to clean the wheel cylinder or you can simply wash the internal debris under running water.     Note:  1. This item can not work in water above 35 ℃ or below.  2. The pump will not operate for a long dry period, otherwise it will be damaged.  3. The pump is not pulling through the power cord.  4. Put the power cord of this unit is available can not be replaced.  5. If the pump is running, check the following points. Check and make sure there is a coherent power supply to the pump unit.  6. The maximum depth of the submersible pumps: 1M.     Note:  1. Check if the rated voltage at the same point as the actual voltage before use.  2. Separate the pump unit from the power supply before proceeding or performing maintenance work.  3. Performed through regular maintenance, it can extend the life of the pump.  4. During installation, the power jack of the pump ensure the plug on the point of more inserted which ensure that water flows through the output wire reproduces.     Package includes:  1 x Aquarium Pump.  4 x Seals.  2 x Outlet Adapters