Gunner Asch writes:



Any 3phase firepump will work on a VFD at the proper voltage.

The pump is the easy part.

Put a 3 minute timer to the fire alarm, a loud warning indicator and
then have it automatically turn on the VFD. G

CalFire/NFPA 13D require there be one pump for potable water and
fire; seems too many homeowners neglected the sprinkler-only
pump. That's why the VFD's are used. When the flow-switch on the
sprinkler line trips, it's time to boogy.

I could use an ordinary VFD but the ones from pump companies
offer many advantages: low flow/high flow protection, low/high
suction, pump overheat, etc. I found the ITT Technologic 502
which does EVERYTHING including RS-485. But I'm hoping for
something less exotic.



--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433