Low pressure in my solar heat

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Pool Newbie
Pool Newbie
Posts: 2
Joined: Mon 18 May, 2009 11:26
My Pool: 18foot round1hp pump, sand filter
Location: brandon, mb

Low pressure in my solar heat

Postby jackzach » Sat 16 Jul, 2011 20:59

i put a homemade solar heater made out of 1/2 inch poly 300 feet of it. i have a 1/2 horse jacuzzi pump it will not suck very hard from the 1 1/2 hose from the skimmer to the pump that i reduced down to 1/2 inch poly tube. but when i put my filter on backwash,rinse,drain,jaccuzzi it draws normal from the skimmer and has normal pressure but when its put on filter (that puts it to the 1/2 inch poly it has very little return pressure and the skimmer will barely suck a fly down). please help

Swimming Pool Superstar
Swimming Pool Superstar
Posts: 401
Joined: Sat 16 May, 2009 09:20
My Pool: 16 x 32 gunite21000 gal., Diamond Brite Blue, Swimquip XL pump, DE36
Location: Texas

Low pressure in my solar heat

Postby czechmate » Mon 18 Jul, 2011 19:39

You did not mention where is your solar heater placed. On the roof?
Your 1/2 HP pump is hardly able to negotiate any rise much above the top of the pool.
After all it is only little over 370 watts motor. Little more than in your kitchen disposer.
The impeller is not designed for this purpose and the 1/2 inch pipe is way too small.
Picture L.A. freeway shut down to 1 lane at 5 P.M.

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