Setting The Pump Capacity - ProMinent EXtronic EXBb Operating Instructions Manual

Start up
Example

9.2 Setting the pump capacity

34
Tab. 6: Input data
Pump capacity at medium
back pressure:
Desired pump capacity:
Back pressure:
Tab. 7: Calculation and results
Correction factor according
to diagram:
Pump capacity to be set:
Stroke length according to
nomograph:
Stroke rate according to
nomograph:
– Select a large stroke length and low stroke rate
for more viscous and gaseous media.
Use a self-bleeding dosing head for gaseous
–
media with a viscosity of ≤ 20 mPas.
Select a low stroke height and high rate for
–
good mixing.
For precise metering, wherever possible select
–
a stroke length of no less than 30 %; at max‐
imum pressure, the stroke length should be:
.
≥ 60 % for type 1601,
–
≥ 40 % for types 1201 and 1002,
–
≥ 20 % for type 0803;
–
the stroke length can be reduced further
with lower pressure.
CAUTION!
Only adjust the stroke length when the pump is
running.
If the stroke length control knob (14) is pressed
without first releasing the lock (15), the adjustment
of the stroke length control knob is altered!
Failure to observe the setting instructions may
result in incorrect metering.
Requirements:
Pump installation and commissioning are complete.
The setting values have been calculated using the nomographs.
11.9 l/h (refer to performance
data)
6 l/h
8 bar
0.9
6 l/h / 0.9 = 6.66 l/h
80 %
80 strokes/min