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Sump Pump Self Control

14-02-2012
by 
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Australian Pump has announced the availability of an automatic submersible pump system designed to be simple to set without the complication and expense of a control box.  No control box means no additional wiring or power requirements other than the standard pump power cable. Both installation and maintenance costs are therefore dramatically lower.

These super tough, lightweight, pumps have a proven track record for long life in both continuous and intermittent sump applications. The pumps are controlled by robust float switches which are simply adjusted to the required activation height.

The system uses two automatic pumps, one of which has a third, additional float switch. The pumps automatically switch on when the water level rises, and switch off when no longer required, thus saving power. The pair of pumps can be set to run alternately, but if the water continues to rise both pumps will work together until the level drops to that pre-set.

“These PU pumps are very versatile. You can set a pair up in tandem to share the load or to operate alternately depending on the water level” said Bill Miller of Mr Drains. “Simply by setting the heights of the automatic float switches any plumber can control when the pumps start, stop, whether they work together or alternate,” he said.

The PU series of submersible pumps is manufactured by Tsurumi Pump at the Kyoto plant, Japan. Tsurumi is the world’s largest submersible pump manufacturer with the capacity to build up to one million units per year.

The pumps in the PU series produce flows of up to 800 litres per minute, with vertical heads of 16 metres.  The series includes both three phase and single phase options with two pole motors up to 1.5kW and are available with 1 ½”, 2” and 3”discharge bores

The PU series are made from moulded resin and stainless steel and are therefore not only lightweight but corrosion resistant. The pump’s vortex impeller is made of fibreglass reinforced resin. This type of impeller passes small solids in suspension through the pump without causing damage or the risk of clogging.

“Tsurumi pumps are loaded with features aimed to extend working life,” said Miller. “This means that you can really ‘set and forget’ these little beauties.”

A unique double mechanical seal with two silicon carbide seal faces operates within an oil chamber to provide maximum seal life.  Tsurumi’s “Oil Lifter” ensures the mechanical seal is continually lubricated even if the lubricant level falls.  

The motors feature a self resetting thermal protection device that reacts to the heat generated by an over current or dry run conditions.  That means that when the motor cools down to a safe operating temperature, the motor automatically restarts.

The Tsurumi PU series are designed for tough applications in construction and plumbing industry. The pumps are particularly suited to pumping waste water, sewage and even rainwater that may contain solids.

Further information on the complete range of Tsurumi submersible pumps is available on the Australian Pump website (www.aussiepumps.com.au) and from Aussie Pump Distributors throughout Australia.

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