Hi Phil,
Here you go… see Jason’s email below.
The GPMs do vary when levels are normal and running in auto as I mentioned previously. They vary to accommodate the variation of the levels in the TPS wet well controlled through the Variable Frequency Drive (VFD) for each pump. The levels in the wet well are in direct relation to the levels in the AB and influent flows.
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.759.0218
F: 503.829.3676
From: Jason Clifford [mailto:jclifford@cityofmolalla.com]
Sent: Wednesday, June 24, 2015 12:04 PM
To: Jennifer Cline
Subject: RE: Transfer Pump Info
Hi Jennifer,
Pump 1: 112hp; 5800gpm at 51’ of total head; max flow is 4300gpm
Pump 2: 112hp; same as above
Pump 3: 50hp; 2400gpm at 49’ of total head; max flow is 8000gpm
Those gpm’s will vary throughout the day and night and weekends.
Pump 3 is relatively new; maybe a year to a year and a half ago. The other two I don’t know.
Hope this helps,
Jason
From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Wednesday, June 24, 2015 11:33 AM
To: Jason Clifford
Subject: Transfer Pump Info
Hi Jason,
I have a few questions regarding the transfer pumps.
Can you please provide the pump HP and maximum pump capacity rate (gpm or gph) for each pump?
Pump 1:
Pump 2:
Pump 3:
Thank you,
Jennifer Cline, P.E.
Public Works Director
117 N Molalla Ave.
PO Box 248 *
Molalla, OR 97038
O: 503.759.0218
F: 503.829.3676
