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Old 08-20-2011, 08:39 PM   #1
Capn_James
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Sep 2010
middle of nowhere, oh
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What would be the best way to cut back the output of my sump for my recirculate chiller? I thought of a dimmer switch but that would probably fry the motor... Any thoughts?
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Old 08-20-2011, 10:21 PM   #2
gmartin
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Nov 2010
Lansing, Michigan
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1) put a valve in the output line and use this to regulate the flow. Restricting the flow is just like asking the pump to pump the liquid higher. It'll only pump so high, and output is reduced the higher the hose end is.
2) never use a dimmer with a motor. There is something that looks like a dimmer, a motor speed control, as used for overhead fans, that many motors are compatible with (e.g. my Teel magnetic drive pump I use for my rims circulation). Get them in your local Home Depot where they sell lighting and overhead fans. Your pump motor? Who knows. If it has a thermal cut out, I'd be more inclined to try it, since it should cut out before damaging the motor.

 
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Old 08-21-2011, 12:25 AM   #3
OKHopHead
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Aug 2011
Tulsa, OK
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A valve on the output is the standard way to do it. A V-ball or globe valve will give you more precise control than a normal ball valve. If you are running at very low flow rates, it may be a good idea to put in a recirculation line to protect the pump.

 
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Old 08-24-2011, 09:39 PM   #4
Capn_James
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Sep 2010
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I think I am going to try the AC motor controller. I will be recirculating my chilling water, using a picnic cooler as my water closet. I'll try the valve if that doesn't work. Just not to keen on sticking my hand into ice cube water to tweek my flow... lol
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Old 08-25-2011, 01:51 AM   #5
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When you get around to installing a valve, place it outside the cooler. The valve only needs to control the flow from the outlet side of the pump. The valve does not need to be connected directly to the outlet on the pump. You could use a vise-grip to clamp down on the hose in a pinch.
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Old 08-25-2011, 06:26 PM   #6
audger
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Apr 2011
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sump pumps are normally direct drive impellers (vs magnetic drive) which do not like being restricted. you can restrict it partially, which would just be like increased head pressure, but if you close the valve completely you can easily and quickly burn the motor out.

... one of the reasons sump pumps arent meant for precise fluid handling.

do you know what type of pump it specifically is?

 
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Old 08-25-2011, 06:34 PM   #7
HexKrak
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Oct 2010
Phoenix
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You could attach a y hose splitter to the output to control flow to the chiller and drain excess back into your tank to avoid putting pressure on the pump.
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Old 08-25-2011, 06:54 PM   #8
Hang Glider
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http://www.circuitspecialists.com/va...c-ps05kva.html

Perhaps this device: (link above)


 
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Old 08-26-2011, 10:06 AM   #9
scone
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Oct 2009
Boston, MA
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This is probably obvious, but why are you trying to restrict the flow of cool water through your chiller? I'm just curious.

 
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Old 08-26-2011, 11:40 AM   #10
mattd2
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Quote:
Originally Posted by scone View Post
This is probably obvious, but why are you trying to restrict the flow of cool water through your chiller? I'm just curious.
My thoughts too, if your wort is getting to cold can you make that go quicker?

 
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