ProMinent ProMix Series, Руководство по эксплуатации, Страница: 38 / 68

Pr o Minent ProMix
‘DB' & 'PB’ Polymer Feeder
ProMix Series MA Batch/Inline User Manual
38
No Feed STOP
This fault occurs because the feeder isn’t getting confirming
pulses from the pump or the flow measuring device on the
pump outlet.
Verify the wiring is tightly connected to controller input terminal
‘
R
’ to and an adjacent Ground symbol
terminal.
Some devices may also require +DC Power.
You
can bypass by disconnecting ‘
R
’ & then jumpering ‘
R
’
terminal to
‘Q’
, stealing pulses from the primary water meter.
‘
R
’ won’t display correct fed polymer volume, but you’ll be
feeding polymer.
Mixer @ Max%
Reduce the Dilution flow GPM.
OR Increase the Primary flow GPM.
Either change lowers the mixer polymer concentration.
You can also reduce the Local or Remote setpoint, although
that’s usually a less desirable fix.
Pump @ MaxFeed
Decreasing the Primary flow GPM and or the Dilution flow GPM
will reduce the pump feed rate.
Verify that the actual pump matches the pump set in the feeder
and that the maximum pump capacity is set correctly both in
the pump and within the feeder.
As in Mixer @ Max% , you can also reduce the Local or Remote
setpoi
nt, although that’s usually a less desirable fix.
If you need more polymer than the feeder can deliver, consider
a pump upgrade.
Open Loop Alarms
The 4-20mA current output loops will immediately alarm if the
loops are not powered and terminated.
These alarms have no effect on the operation of the feeder.
If you wish to terminate the loops, connect +DC Power to either
or both current output ‘
+
’ terminal(s) and connect the ‘
-
‘
terminal(s) to any Ground symbol terminal