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Backup Sump Pump Question
The backup pump currently will run, but not pump any water out of the
drainage hole. The pump's instruction says that if this occurs to drill a small hole in the drainage pipe about 3 inches above the hole. Can someone explain to me why this should work, before I start drilling holes in my pipes? Thanks, Paul W |
#2
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Paul W wrote:
The backup pump currently will run, but not pump any water out of the drainage hole. The pump's instruction says that if this occurs to drill a small hole in the drainage pipe about 3 inches above the hole. Can someone explain to me why this should work, before I start drilling holes in my pipes? Thanks, Paul W http://www.askthebuilder.com/195_Sum...uardians.shtml Excerpt: "The vibrations and inability to pump on occasions can almost always be attributed to pump air- lock. When a sump pumps turns off, the water in the discharge line between the pump and the check valve drains back into the sump. If the pipe between the pump and the check valve is solid, the air in the line will compress the next time the pump tries to empty the sump basin. This compressed air can prevent water from leaving the pump. A 3/16 inch vent hole in the side of the discharge pipe inside the sump solves this problem. Check to see if your discharge line inside the pit has this hole. If it does, make sure it is not clogged." |
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