Pump Tips

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When using a pond pump the following points should be considered.

Do not allow pump to run dry.
Make sure water is circulating through the pump.
Always install inlet below water level
Check pump for connections, even the smallest drip will loose around 50 gallons per day.
Do not attempt to operate pump without proper electrical grounding.
A suitable inlet screen should always be used to prevent foreign matter from entering the pump and jamming the impeller.
Do not attempt to open the electrical motor housing.
Clean the impeller chamber regularly, otherwise the flow will continually lessen and eventually cease.
After installing Immediately skim off any oil from the water surface using a bucket to prevent depriving fish of oxygen.
To reduce the risk of electrical shock, connect all electrical items to an earth leakage circuit breaker. 
Do not allow an out-of-pond pump to become externally submerged in water.
Do not run the pump with the inlet restricted by more than 25%,i.e. with too small an inlet pipe.
Do not use a pond or fountain pump for any other liquids.
Harsh water conditions can result in foreign matter build-up on the pump's internal surfaces that can prevent the impeller's function and chemically attack its housing structure.
Control (reduce) flow by valving the discharge pipe work.
The pump cord with plug must be long enough to make electrical connection outside of the pond while allowing its proper placement within the pond.
Some pumps must be physically primed before operation or damage could be caused to the pump.
If your out-of-pond pump is not self-priming, position the pump physically lower than the pond surface, (not in the pond) use a check valve and primer pot in the suction line. Make sure all plumbing joints are air tight.
Ensure when designing the pond that the pump inlets are as far away from its pond return point as possible.
During winter you need to keep the filter operating, raise the pumps inlet to around 1ft below the pond surface, this reduces the chill effect on the deeper water.

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