Pulsafeeder Polyfeeder EN - Manual (Page 14)

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6.5.1.3 Water Inlet Connection
Connect the pressurized water source to the dilution water inlet of the system. The water source must
be able to support a minimum of the capacity that you wish to make of dilute polymer at 30 psig. If
water pressure varies, installation of a water pressure regulator may be necessary to have reasonable
control over the water flow.
6.5.1.4 Polymer Inlet Connection
Connect the neat polymer tote bin or bulk tank to the neat polymer inlet.
6.5.1.5 Polymer Solution Outlet Connection
Connect the discharge piping to the Solution outlet.
6.5.1.6 Polymer Pressure Relief Routing
It is recommended to run a line from the neat polymer pressure relief valve back to the neat polymer
tote. This will avoid loss of polymer in the event of an over pressure condition.
6.5.1.7 Priming/Filling Dilution Stream Piping
Open the dilution water inlet valve. Make sure valve is completely open.
Note the reading on the dilution water pressure gage. This should be greater than 30 psi and MUST BE
less than 100 psi.
Slowly open (by rotating the hand wheels counter-clockwise) the primary and (if present) secondary
dilution globe valves. This will fill the dilution pipelines and polymer mixing chamber with water.
Adjust valves until the floats on the primary and secondary rotameters indicate the desired solution
output in gallons per minute.
Pulsafeeder recommends a primary to secondary flow ratio of 4:1 e.g. if you want 20 GPM of polymer
solution, 20/5=4, run 4 GPM secondary dilution and 16 GPM of primary dilution.
Once the desired dilution water flowrate is established, the Dilution water inlet (ball) valve can either
be closed temporarily to save water while the neat polymer feed pipeline is primed, or be left running.
6.5.1.8 Priming/Filling Polymer Delivery Piping
NOTE: It is not recommended to inject neat polymer into the mixing chamber when dilution
water is not running or when the mixing chamber is empty.
6.5.1.8.1 Priming the Polymer Suction Side
Open the following valves:
 Neat Polymer discharge side Bleed Valve
 Calibration Column isolation Valve
 Neat Polymer suction side Drain Valve
Be mindful of the bleed and pressure relief ports when opening valves! Especially if the pipeline
was previously under pressure. Wear protective clothing and goggles to prevent injury in the
event of unanticipated chemical discharges.