the hole is not needed.

s


"AE Todd" wrote in message
...
I tried out my new Zoeller non-automatic .3 hp sump pump, and the
instructions say to drill a 3/16 hole on the discharge pipe about
equal to the top of the machine. I did this, and not only does it
reduce the discharge pressure, but it makes an irritating spraying
sound when the water level drops below that point and the water sprays
against the side of the pit. Instructions say that this hole is
required to deal with air buildup when used in conjunction with a one-
way valve. Does anyone have an opinion on if the hole is really
needed?

On another note, I didn't know that the the pump I was replacing was .
5 hp, and it appears that the lower hp of my new pump results in a
dramatic drop in pressure. Interestingly, the old pump is actually an
automatic unit with a float switch, where they just taped up the
switch in an always-on position so that the on/off function is left to
the separate switch unit that the pump is plugged into. I didn't
discover this until I pulled out the old pump and found the float
switch taped to the discharge pipe.