Dankoff needs new head

hillside
hillside Registered Users Posts: 157 ✭✭
in Solar Water Pumping #1
I just read through the discussion from 2013 Shurflo vs. Dankoff...it appears my Flowlight booster Pump head has failed. i took it to a electrical shop that services pumps and they had never seen one. Motor & brushes check out "perfect" and they said it looks like this area, pointing to the head. 
I'm not sure if I buy a new head if they can install it. Is that difficult to do?
It's been used sparingly for about 11 years as we use municipal water and the Dankoff fills a 65 gal. pressure tank to feed the house for drinking water and occasional showers. Probably starts up no more than twice or week and each time is a 6 minute run. 24 volt and plenty of voltage here.
If it's a relatively simple job to replace the head maybe I'll look for another shop.
Thanks
8- 235Watt panels, 2 strings in series/parallel, 4 Rolls, 235 AH FLA. batteries, 1800 W.Xantrex pure sine inverter, SRNE ML2440 40Amp Controller &  40 Amp Renogy controller, 24 Volt system. 
5 stand alone PV arrays; 12V gate opener, 24V Dankoff rain water pumping system, 12V Shurflo rain water garden pumping, 12V bathroom lighting and fan.
4- 450 Watt panels with 4 Rolls 235 AH 6 volt batts./ 2-Renogy Tracer 40 Amp controllers/ Xantrex 1800W PSW Inverter.
Honda EU3000W generator for backup.
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Comments

  • Wheelman55
    Wheelman55 Registered Users Posts: 255 ✭✭✭
    #2
    Try contacting Dankoff.  
    Off-Grid in Terlingua, TX
    5,000 watt array - 14 CS 370 watt modules. HZLA horizontal tracker. Schneider: XW6048NA+, Mini PDP, MPPT 80-600, SCP. 390ah LiFeP04 battery bank - 3 Discover AES 42-48-6650 48 volt 130ah LiFePO4 batteries
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  • Graham Parkinson
    Graham Parkinson Registered Users Posts: 190 ✭✭✭
    edited November 4 #3
    As I recall, on the Dankoff Slow Pumps you can either replace the head (super easy) or you can replace the seals and carbon impeller vanes inside the head (a bit more involved).  Dankoff sells kits for either.  The Slow Pumps typically last forever if the water is properly filtered, inlet pressure is high enough to avoid cavitation and pump is not run dry.  We have been pumping water with them for about the last 35 years and have gone through one new head and one rebuild.  Not sure if their booster pumps are similar though.

    Offgrid in cloudy PNW

    Full Schneider system with 18 REC 420W panels, 100A-600V controller, XWPro, Insight Home, six Discover AES Rackmount 5kW batteries, Slimline enclosure, Lynk II, AGS, H650,  H2200, H3000 (Propane conversion on Victron AutoTrans with Gen Line 2 wire AGS on AC1), Kubota 4500, Onan 7500 (on second AGS and AC2).

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