DC sub pumps [RE-wrenches]

[Eric Smiley]

I recently was called by a client with a 2 year old Sureflow 9300
submersible pump. It is running on a 12 volt battery system.

The pump seemed to be OK at first. However, after it ran for about 5
minutes it tripped the breaker on the circuit would no longer operate -
presenting a dead short at the top of the well.  I had to get back to
Vancouver so the client pulled the  pump today and I haven't had a
chance to inspect it.

I'm debating talking the client into an inverter and AC pump or trying a
DC submersible again.

Any one else encounter this kind of failure?
I've stayed away from DC sub pumps in the past and this was my first and
only.

Eric Smiley
Project Leader
Photovoltaic Energy Applied Research, Technology Centre
British Columbia Institute of Technology
Burnaby Campus

NE25 - 3700 Willingdon Avenue
Burnaby, British Columbia
Canada V5G 3H2

phone: 604.432.8657    fax: 604.436.0286
esmiley at bcit.ca             www.tc.bcit.ca

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