Wahoo
Well-Known Member
Makes sense, thanks for the quick response!
Walter,
Attempting to do a toolbox install of my 815. I read what you said around Page 30 of this thread about offsetting the magnet on the shaft. When I take off the motor bracket, I can't seem to take the magnet off the shaft. It looks like there is a place for a set screw, but unless I'm missing something, it doesn't look like there is a set screw there! Despite this, I can't seem to slide or remove the magnet. See pic....
- What is going on that doesn't allow me to slide or remove the magnet?
- Does this even in fact have to be done? The toolbox is relatively thin (~1/32"?) and in most of the blogs and articles I've seen about this type of setup, offsetting the magnet isn't mentioned.
Much thanks!!!
WalterAtMarchPump said:Yeah, i went through this with another member that was trying something like this....unfortunately our pumps don't really make big pressure. First pump i have that can actually make 40psi would be our 8 series....its a 3hp 3 phase unit and can flow 125 gallons per minute....so it would be a BIT overkill for this!! LOL What you would need is some sort of positive displacement pump to make those pressure levels. Like a gear drive or peristaltic or diaphragm.
The other member was going to make a carboy cleaner...or was it a keg cleaner....don't remember. But anyway he was going to try and use an AC-5C-MD and place the outlet of the pipe as close tot he bottom of the vessel as possible to help distribute the fluids all over the bottom of it. But again i don't think there was enough pressure for him so i don't know what ever happened to his idea.
Walter, thinking of how you can restrict the outlet as much as you want, I had a thought...
Is there any issue with running these long term? Consider a house pumping water from a well... pump is running 24/7, but the flow itself is controlled by opening the outlets (faucets/taps). Could a (primed, of course) March pump be left continuously running for days without any major problems?
Hi Walter, I recently broke the outlet port on my 809, and while I see replacement heads sold online I'm curious if they come with an impeller shaft or if you need to use your existing one?
If it's an existing one, how would I go about removing it and installing on the new head?
Hi Walter,
Can you round me up some part numbers? I need to place an order with my local pump shop here soon.
I need an 815 larger impeller pump with a base and a 6 foot cord, inline 1/2 NPT head.
Do you guys have stainless heads preloaded with the 815 impeller in the 1/2 NPT inline configuration?
Thanks in advance.
Walter, thinking of how you can restrict the outlet as much as you want, I had a thought...
Is there any issue with running these long term? Consider a house pumping water from a well... pump is running 24/7, but the flow itself is controlled by opening the outlets (faucets/taps). Could a (primed, of course) March pump be left continuously running for days without any major problems?
Hi Walter, I am looking into a bit of automation including flowrate monitoring and would like to eventually have flow control. the 2 options I have prelimanary started looking at areeither a modulated actuated bal valve on the pump output or controlling the pump speed/power.
For the second option I was originally thinking somehow build a VFD but that would likely result in a square wave AC being feed to the pump, would this be an issue?
The othermehtod I have come accros is PWM the pump, is there any issues with doing this - any recommend frequency for the PWM?
I'm not speaking for Walter, but with my limited experience with well pumps, they pump up to a pressure, then shut off. When you open a valve the pressure drops, and the pump kicks back on.
This is of course irrelevant to your question of continuous running under restriction. Just saying....
Hi Walter, I recently broke the outlet port on my 809, and while I see replacement heads sold online I'm curious if they come with an impeller shaft or if you need to use your existing one?
If it's an existing one, how would I go about removing it and installing on the new head?
Walter
Will prolonged exposure to starsan hurt my pump? Im thinking about building a keg/carboy/bottle wash/rinse station and was thinking about using my pump to circulate the liquid.
Thank
Sorry for the late reply....for some reason i wasnt getting any emails notifying me of any new postings...
Anyway part number you are looking for is 0809-0196-0600
that would give you an 815-PL with base and 6' cord (inline version)
if you want the center inlet version then it would be 0809-0196-0800
We do have a stainless version but its the center inlet style...not the inline sorry
From what i know about VFD....it only works right on 3 phase motors
For these single phase units you would need some sort of PWM...but ive never really looked into it before. Some of our customer do get into things like this but you are talking about place thats have a big budget for playing around....like Honeywell, Culligan, and IBM
I would think having some sort of a ball valve with a stepper motor setup or the sorts would be easier to do and probably cheaper....but i dont know...
Thanks Walter. Can you give me the part numbers for the SS heads with the center inlets? Thanks a bunch.
Is there a way to upgrade this pump to handle boiling wort temperatures?
Thanks,
Nick
Yes and no......the series 4 pumps are the exact same pump as the series 5 physicly...the difference is inside with the impeller. You could buy the 5B pump head and it will bolt right up...but if you try and pump with it it would probably overload the motor and woudl overheat. If you wanted to make it work then you would need to take the 5B impeller and have the blade height milled down to match that of the series 4 pump and you would be in business.
if you have a local machine shop all they would need to do it chuck it up on a lathe and mill the blades down to 1/4" tall as the 5b impeller blades are 3/8" tall...shouldnt cost much at all...would take them less then 2 min to do it all.
But if you are only working with 170* liquids, then the standard pump will be just fine. The Kynar plastic we use on these pumps is FDA approved for potable water use.
Overkill with our pumps is usually easier to deal with then not having enough. When you have too big a pump with a mag-drive centrifical, you can choke the outlet to balance the system out, or we can trim the impeller to cut the flow rates and the pump can be made to run in a happy state. The right pump is usually determined by your setup and what you want to get out of it in the end. If you feel the 815 wont be enough then check out the AC-3B pump...its the next step up from the 815 and gives a little more output.
If you have any more questions or want to talk, just give me a call at work
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