SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

Pulling water from lake with a 1.5 hp motor, Pressure is 50psi and drops to 40psi while 7 ag-5 impluse sprinkler work. The heads are nozzel are 2.7 each. Pressure holds for approx 17 min and than falls to over that time to below 30 psi and than fails

HELP

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Wet_Boots</i>
<br />Suction line leak? Clogged inlet strainer?
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

suction line link - I replaced the inline back flow and a new compression connector, clogged inlet strainer - I cleaned the strainer cloth over the inlet pipe and while it runs the water seems clear. I also dis-assembled the motor casing for debris clean out, there was no debris ? Thanks for your response, any other ideas??<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Wet_Boots</i>
<br />Suction line leak? Clogged inlet strainer?
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

suction line link - I replaced the inline back flow and a new compression connector, clogged inlet strainer - I cleaned the strainer cloth over the inlet pipe and while it runs the water seems clear. I also dis-assembled the motor casing for debris clean out, there was no debris ? Thanks for your response, any other ideas??<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Wet_Boots</i>
<br />Suction line leak? Clogged inlet strainer?
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Thanks for the response, you were correct with the suction line leak, a small (one drop every 3 min) from a coupling. Go fiqure.
thanks again for your ideas and helpful response

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Wet_Boots</i>
<br />I would be checking the suction pressure (negative pressure, actually) with a vacuum gauge and looking to see if there's some change during operation. How old is the pump?
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">