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Thread: Solar panels for vacuum pump

  1. #11
    Join Date
    Jan 2006
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    Oneida NY
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    10,922

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    If the charger has an output of 8 or more amps. Reading the specs that pump at it's highest pressure output uses 6.8A, thus an 8A out charger will work regardless of the load on the pump. If the output pressure never exceeds 30 or even 40 PSI a 6A is big enough.
    Dave Klish about 400 taps, down from much more. Will hold about the same for 2021
    2012 Mahindra 36 HP 4x4/ loader/cab/heat/AC:-)
    3x8 raised flue evaporator
    250 GPH converted to electric, RO by Ray Gingerich
    6.32 KW solar system, 1.48KW is battery backed up, all net metered
    website: www.cnymaple.com

  2. #12
    Join Date
    Nov 2013
    Location
    Princeton, MA
    Posts
    401

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    A battery charger is designed to charge a battery, so it may not act the same as a regulated power supply, if you want to power the pump directly. Especially if it is a cheap charger. The battery acts like a capacitor which smooths out the 60 cycle AC line fluctuations. Maybe it will work OK, but I would suggest checking the pump voltage with a voltmeter to make sure the pump voltage is between 11-14 volts when running. You could find a small lead acid battery like from a lawn tractor, motorcycle etc that is not being used and keep it connected if this is a problem.

    Dave
    Mountain Maple farm
    2020: 207 taps, 60% red maples. Mountain Maple S3 diaphragm pump controller with automated sap transfer
    New website:
    https://www.mountainmaplefarm.com
    https://www.facebook.com/MountainMapleFarm/

  3. #13
    Join Date
    Nov 2011
    Location
    Mi
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    111

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    so just hook the pump and charger to the battery leads at the same time would this work. I do have a old lawn a garden battery that does not hold a charge could I do that.
    Smoky lake full pint on my leader half pint arch
    75- 100 taps depending on how lazy I am
    Homemade RO sapinator
    4 kids who help (at least for about the first hour of the season)

  4. #14
    Join Date
    Nov 2013
    Location
    Princeton, MA
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    401

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    That should work.

    Quote Originally Posted by Greenthumb View Post
    so just hook the pump and charger to the battery leads at the same time would this work. I do have a old lawn a garden battery that does not hold a charge could I do that.
    Mountain Maple farm
    2020: 207 taps, 60% red maples. Mountain Maple S3 diaphragm pump controller with automated sap transfer
    New website:
    https://www.mountainmaplefarm.com
    https://www.facebook.com/MountainMapleFarm/

  5. #15
    Join Date
    Mar 2013
    Location
    West Sumner, ME
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    207

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    Do you have a temperature controller? All you need to do it set it to turn the pump on and off at certain temperatures. Im using a simple Inkbird controller on 2 systems. It turns the pumps on and off and runs a ball valve. So when the pumps are off the valve is open in case I run out of battery the sap will bypass the pump and gravity flow.
    West Sumner Sugar House
    West Sumner, ME
    400 +/- Taps - 2 x 8 CDL Venturi - 2 Shurflo Solar Systems - MES Dolly 300
    https://www.facebook.com/WestSumnerSugarHouse

  6. #16
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    Jan 2013
    Location
    Enon Valley Pa
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    33

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    West Summer Sugar. I was wondering were you bought the by pass valve that opens when the pump is off?

  7. #17
    Join Date
    Mar 2013
    Location
    West Sumner, ME
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    207

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    Quote Originally Posted by toothfairy050 View Post
    West Summer Sugar. I was wondering were you bought the by pass valve that opens when the pump is off?
    It all in the programing and wiring of your system. I use normally open ball valves so at night when the pump turns off, the valve goes back to and open position, bypassing the pump allowing for gravity. In the morning, the pump kicks on, the valve closes and all sap flows through the pump. I usually get my valves on ebay.
    West Sumner Sugar House
    West Sumner, ME
    400 +/- Taps - 2 x 8 CDL Venturi - 2 Shurflo Solar Systems - MES Dolly 300
    https://www.facebook.com/WestSumnerSugarHouse

  8. #18
    Join Date
    Jan 2013
    Location
    Enon Valley Pa
    Posts
    33

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    Thanks for the info

  9. #19
    Join Date
    Jan 2018
    Location
    Manitoulin Island, Ontario
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    That is what is was attempting to do was run a temp controller but i set the parameters to turn off and on the pump and either the pump doesnt turn on or shut off at desired temps...
    Last edited by Beerclouds; 01-26-2021 at 12:00 PM.

  10. #20
    Join Date
    Mar 2013
    Location
    West Sumner, ME
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    Quote Originally Posted by Beerclouds View Post
    That is what is was attempting to do was run a temp controller but i set the parameters to turn off and on the pump and either the pump doesnt turn on or shut off at desired temps...
    What controller are you using? And are you using heating or cooling mode? I believe my Inkbird controller is in cooling mode meaning as the temp goes up, it thinks it needs to cool so it turns on the pump.
    West Sumner Sugar House
    West Sumner, ME
    400 +/- Taps - 2 x 8 CDL Venturi - 2 Shurflo Solar Systems - MES Dolly 300
    https://www.facebook.com/WestSumnerSugarHouse

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