With both taps turned off, if the pump pressure switch doesn't see back
pressure, it will run until it sees pressure, and the pump turns off. When
the cold water is turned on, the pump pressure switch sees no back
pressure, and pumps the cold water. When the cold water tap is closed, the
pressure switch sees back pressure and turns the pump off. When the hot
water tap is turned on, there is still some back pressure (coming from the
hot water tank), so the pump doesn't turn on immediately. After the hot
water runs for a while, there is no back pressure, and the pump turns on.
This is normal operation. If the pump is straining before it shuts off,
it's because pressure is building up in the hot water tank.

Alan Bergen
35 Mk III Thirsty
Rose City YC
Portland, OR


On Tue, Oct 23, 2018 at 10:58 AM, Jim Watts via CnC-List <
cnc-list@cnc-list.com> wrote:

> No accumulator tank, the T/P valve is the only thing I changed, no other
> lines disconnected.
> Thanks for all the thoughts, I'll try bleeding off the T/P valve and see
> if it helps.
>
> Jim Watts
> Paradigm Shift
> C&C 35 Mk III
> Victoria, BC
>
>
>
>
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