Bill — if you can find the pressure switch assembly, carefully remove it and
look for a small orifice or hole on the flat face of the switch that threads
into the pump body. That hole can get plugged by particulates that settle out
of the water. Try cleaning it carefully with a toothpick or
Bill,
In addition to a faulty pressure switch, one of the diaphragm/check valve
assemblies may leaking. This results in internal bypassing in the head of
the pump.
Is there a strainer on the pump intake? If not, debris may have gotten
into the pump head and fouled one of the valves.
Do you
Anyone know how to troubleshoot PAR diaphragm pump that pumps great but will
not shut off when reaches pressure. Just keeps on grinding. There is NO air
in system. with faucets open pumps great, great pressure, but when shut
faucets it won't reach pressure and stop. Is there a setting
Bill, it's very likely the pressure switch. Google up your model number and you
will quickly find an exploded diagram and many sources for parts.
Rich
On May 28, 2014, at 23:41, Wwadjourn via CnC-List cnc-list@cnc-list.com
wrote:
Anyone know how to troubleshoot PAR diaphragm pump that
