Dual Submersible install [RE-wrenches]

[Matt Tritt]

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  Nick,

  If the existing pump was installed in the "usual" fashion, you will find 
it impossible to lower your ETA past the first pipe centering spacer. These 
are sometimes placed way far from the pump but usually within about 20'.

  Another problem to expect is the lack of room in the casing that can cause 
the new pump to hang up in the drop wire, safety rope and drop pipe. 
Remember that the pipe wants to be several inches in from the wall, which is 
just where your pump will want to go.

  Regardless of how you manage to stuff all this equipment in the hole, when 
it comes time to pull one or the other you will have to pull both. If you've 
ever worked with Aermotor pumps, they solved this same problem by providing 
a place to connect the output of a "regular" submersible on the bottom of 
their positive displacement pump; this way the pumps share the same pipe 
eliminating lots of duplicated material.

  I wish you the best of luck with your effort. I have done this before, but 
won't do it again unless the casing is at least 8" I.D.!

  Matt T
  ----- Original Message ----- 
  From: "Nick Lucchese" <nickl at sierrasolar.com>
  To: <RE-wrenches at topica.com>
  Sent: Friday, October 22, 2004 11:48 AM
  Subject: Dual Submersible install [RE-wrenches]




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  Greetings Fellow Wrenches,
    Tomorrow I head out to finish an installation of an ETA Pump that is
  to be installed with an existing 240v submersible. Panels to disco
  and controller conduit to well head is already in place so I'm hoping
  for a somewhat shorter day than the first. I've never dropped a
  second pump next to an existing before and wondering if anyone out
  there has any helpful tips or recommendations from experience they've
  had with such an install. The well has a 6" casing and the existing
  pump utilizes a 1" discharge pipe so I'm hoping for a smooth drop. It
  will be lowered by the owner and myself by hand almost 240' with many
  opportunities to snag on the existing pump, especially if the bundle
  wraps were spaced further rather than closer apart. One of my fears
  is that it will snag and force us to pull up the existing and lower
  both at the same time which is impossible to accomplish with just two
  people. What would be the ideal distance of separation between the
  two pumps in the well?

    Any tips or recommendations would certainly be helpful from those
  with any experience on such an install. Also, any resources on where
  to get dual discharge and electrical port well seals? I was
  successful at getting one fabricated from our local well supplier but
  at $120 it seems there must be a better resource available.

  As always thanks for your time,

  Nick A Lucchese

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