Dwelltech Report post Posted March 11, 2017 Any suggestions on a replacement pump for this 12V 7.0GPM FLOJET PENTAFLEX?These are pricey and not easy or fast to get ahold of. If at all. Share this post Link to post Share on other sites
Roof Cleaning Virginia Report post Posted March 11, 2017 Fatboy 2 or Fatboy 3. 12v and 7 GPM when unrestricted. Operation will be identical to the Pentaflex. 1 Apple Roof Cleaning (813) 655-8777 reacted to this Share this post Link to post Share on other sites
Dwelltech Report post Posted March 13, 2017 Thank you, that's what I was thinking but needed reinforcement. Appreciate the help! 1 Roof Cleaning Virginia reacted to this Share this post Link to post Share on other sites
Dwelltech Report post Posted March 15, 2017 Wiring for dummy.....Apparently I'm m not connecting something correctly.The switch doesn't function but will trip and pump continues to run.The Flojet was a bit different than this FB I hooked upbattery leads to switch positive from pump to switchNegative from pump to switch.whats the obvious thing I'm missing? Quit laughing! Share this post Link to post Share on other sites
Roof Cleaning Virginia Report post Posted March 15, 2017 I haven't used a FB for a while (we use 5850s) so someone keep me honest here. There should only be only two exposed wires on the FB, a black one and a red one. It looks like you have third wire (black) coming from the relay area? Did you disconnect something perhaps? If so, put it back like the way it came and then:Red wire from FB to switch, then switch wire to positive battery terminalBlack wire (original loose one) straight to negative battery terminal. Share this post Link to post Share on other sites
Dwelltech Report post Posted March 15, 2017 Here's a better photo. The extra wire was from the old Flojet ,don't think it serves any purpose with this pump that I know of.Dont understand why pump will work but switch doesn't. Share this post Link to post Share on other sites
Dwelltech Report post Posted March 15, 2017 I haven't used a FB for a while (we use 5850s) so someone keep me honest here. There should only be only two exposed wires on the FB, a black one and a red one. It looks like you have third wire (black) coming from the relay area? Did you disconnect something perhaps? If so, put it back like the way it came and then:Red wire from FB to switch, then switch wire to positive battery terminalBlack wire (original loose one) straight to negative battery terminal.I connected it all like that but still the same. Obviously I'm missing something but... I replaced the switch just in case. No change. Share this post Link to post Share on other sites
Roof Cleaning Virginia Report post Posted March 15, 2017 That's much more clear.Black ground wires connected together ("Leads from battery connected to "Neg from pump""POS from pump" to terminal on the switch.OTHER terminal on switch to positive battery terminalWhat is NOT clear is if you have 12v to the switch through the metal firewall. If so, then the 'line side' terminal may always be hot. In which case, wire the pump to the load side. If you have a VOM you can figure out it pretty easily.When I ran switches (I don't any longer, they just corrode and fail at the worst opportune time) I simply ran a single pole switch in series with the positive lead. You'll figure it out. :-) Share this post Link to post Share on other sites
Atlas1 Report post Posted March 15, 2017 (edited) @Central Iowa Roof Cleaning has a youtube video that shows how to wire that pump through a solenoid, and you'll never have to buy or replace another relay again. I would pm him and ask for his help.There ARE supposed to be three wires (one comes from the pressure switch) but I'm not sure how to wire them without using the solenoid.(The one he shows in his video is a 7870-101E SB.....Not sure what's different about the 101Y SB....Sorry about that) Edited March 15, 2017 by Atlas1 Share this post Link to post Share on other sites
Roof Cleaning Virginia Report post Posted March 16, 2017 There's are only two leads to wire. I ran those things for years. The hot lead from the motor does indeed route to the pressure switch, then from the other side of the pressure switch back to the battery. Once the pre-set pressure is reached, it "opens" the pressure switch interrupting the 12v.With Dwelltech, I think it's something with his external switch as the pump will run, but the switch doesn't shut it off. He'll have it figured out in the morning. :-)BTW - I heard that Bruce's solenoid solution that you mention works great! Share this post Link to post Share on other sites
Atlas1 Report post Posted March 16, 2017 The solenoid mod does work great....I love it! I guess I should have mentioned, as part of that mod, you change some of the pressure switch wiring around, so you end up with three wires instead of just two. It's hard to explain without watching Bruce's video, but it works, and works very well. 1 Roof Cleaning Virginia reacted to this Share this post Link to post Share on other sites
Dwelltech Report post Posted March 16, 2017 I just did it this way with a battery disconnect switch,seems fine. Thanks for all the input! Still don't get the other one but oh well. Share this post Link to post Share on other sites
coastal1 Report post Posted March 16, 2017 These systems can be a little confusing however, when running a relay or solenoid switch, you would run the line power to the input of the solenoid switch. On the same terminal run a power wire to the pumps pressure switch "line side". Take the other red wire which generally goes straight to the pump and run it back to the solenoids switch terminal( small post ). Run a hot wire off the other side( output terminal ) of the solenoid and connect it to the red wire of the pump.The pump switch needs to be "hot" at all times. When the pressure against the switch drops and closes the switch contacts, it energizes the switch terminal of the solenoid which allows the higher current load to pass through the solenoid and go to the pumps hot wire.Mike Share this post Link to post Share on other sites
bulletproof Report post Posted March 17, 2017 Can a 5850 be run off a solenoid too? Share this post Link to post Share on other sites
coastal1 Report post Posted March 17, 2017 Can a 5850 be run off a solenoid too? Sure can! Virtually any 12v pump can be run off a solenoid.Mike Share this post Link to post Share on other sites
bulletproof Report post Posted March 18, 2017 great thanks Share this post Link to post Share on other sites
Dwelltech Report post Posted June 10, 2017 Well 3 months and two fat boys later... I need a new pump Fu#!Rinsed as usual too. Dont understand it my flojet went went two years. Time to move away from 12v maybe? 1 Apple Roof Cleaning (813) 655-8777 reacted to this Share this post Link to post Share on other sites
