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Thread: Procon Pump Failure

  1. #1
    Join Date
    Jan 2015
    Location
    Catskill Mts, Ulster County NY
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    518

    Default Procon Pump Failure

    I'm running (was running) a NGMP 100STDRO single 4x40 RO. A few minutes after startup yesterday, the procon stopped pumping. Pressure (190psi) fell to zero, no concentrate or permeate. Motor was running as normal. Thee was no noise or warning, it just stoped pumping. The pump was ice cold, and was working fine until the moment it stopped. I was fixing a leak on the concentrate recirc line back to the holding tank when it stopped. The unit is just over 1 year old. The sap was at an underwhelming 1%, so I'm not running without an RO (no doubt my season is over now). I'll be in contact with NGMP Monday, but just curious about what could have happened.
    Gary / Zena Crossroads / 42˚ 00' 24" N / Hobby in Early '70s, Addiction since 2014

    +-150 taps on 3/16 (45 on Lunchbox Vac/Releaser)
    12x14 timber framed sap house w/attached 10x14 shed roof for storage w/expansion plans for 2020
    2 x 6 Smoky Lake hybrid pan on home built arch (cast concrete) with AUF/AOF/steam hood/preheater
    7.0 KW Sun Power PV System, Smokey Lake Filter Press/Steam Bottler, NGMP 100 gph RO

  2. #2
    Join Date
    Mar 2011
    Location
    UP MI
    Posts
    216

    Default

    Probably the impeller broke. I’ve had a few do that before I changed to a better pump. You can get a rebuild kit for them for about 50 bucks if I recall, easy fix.


    Sent from my iPhone using Tapatalk

  3. #3
    Join Date
    Jan 2015
    Location
    Catskill Mts, Ulster County NY
    Posts
    518

    Default

    It is guessed that my pump ran dry at some point and the vanes were damaged or broken. This could have jammed the impeller and caused the key to shear, thus stopping the pump. Without disassembly of the pump, we can't be sure. But, I am interested in a possible rebuild, so I will look into that, and will also take a look inside the pump.

    There could have been a number of reasons for the pump running dry; empty feed tank, unsecured hose falling out of the feed tank, suction holding the open end of the feed line to the bottom or side of the feed tank. I don't recall the first two occurring, but the hose could have stuck to the tank bottom/wall, or even curled so that end was not under the sap level. We do know that the unit never froze, and that the pre-filter has been changed before every rinse cycle, so not too likely a dirty filter blocked the flow.

    My current setup protects much more against running dry, for whatever reason, but early on it was possible, particularly if I was away from the unit for any length of time.
    Gary / Zena Crossroads / 42˚ 00' 24" N / Hobby in Early '70s, Addiction since 2014

    +-150 taps on 3/16 (45 on Lunchbox Vac/Releaser)
    12x14 timber framed sap house w/attached 10x14 shed roof for storage w/expansion plans for 2020
    2 x 6 Smoky Lake hybrid pan on home built arch (cast concrete) with AUF/AOF/steam hood/preheater
    7.0 KW Sun Power PV System, Smokey Lake Filter Press/Steam Bottler, NGMP 100 gph RO

  4. #4
    Join Date
    Jan 2015
    Location
    Catskill Mts, Ulster County NY
    Posts
    518

    Default

    Quote Originally Posted by regor0 View Post
    Probably the impeller broke. I’ve had a few do that before I changed to a better pump. You can get a rebuild kit for them for about 50 bucks if I recall, easy fix.


    Sent from my iPhone using Tapatalk
    What would be a better pump?

  5. #5
    Join Date
    Mar 2011
    Location
    UP MI
    Posts
    216

    Default Procon Pump Failure

    I have a Goulds Booster Pump
    10GBC15, fantastic high pressure pump.


    Sent from my iPhone using Tapatalk

  6. #6
    Join Date
    Jan 2015
    Location
    Catskill Mts, Ulster County NY
    Posts
    518

    Default

    I've always liked Goulds pumps.

  7. #7
    Join Date
    Mar 2013
    Location
    Merrimack, NH
    Posts
    551

    Default

    Can I ask what pressure you get with that Goulds 10 pump? I have a Goulds 7 and cant really run it more than about 210psi.

    Thanks!

    Quote Originally Posted by regor0 View Post
    I have a Goulds Booster Pump
    10GBC15, fantastic high pressure pump.


    Sent from my iPhone using Tapatalk
    2020 Upgraded RO to 2 post and 7GBS Gould Pump. 400 taps
    2019 New Smoky Lake 2x6 raised flue, Simplicity Autodraw system, The Maple Guys Maple Jet Filter Press, a beautiful new bride to be my sugaring partner :-)
    2018 Deployed
    2017 Expanded Sugar Shack, new 2x6 with float box, NEXTgen Maple RO, 250+ taps (I hope for 300), still on sap sacks
    2016 New Sugar Shack, 2x6 evaporator, 160 taps, all on Sap Sacks
    2015 Deployed
    2014 110 taps
    2013 35 taps

  8. #8
    Join Date
    Jan 2015
    Location
    Catskill Mts, Ulster County NY
    Posts
    518

    Default

    Quote Originally Posted by regor0 View Post
    Probably the impeller broke. I’ve had a few do that before I changed to a better pump. You can get a rebuild kit for them for about 50 bucks if I recall, easy fix.
    Removed the pump. The drive shaft sheared off, probably due to broken vain jamming the impeller. This is a Series 5 pump, SS with 1/2' fittings. The best price I've found on a rebuild kit is $95 from EDCO, which is actually the same price they charge to rebuild the pump if you send it to them. So I may just send it in. If anyone knows of a better deal, let me know.

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