ProMinent Hydro 3 Series, Руководство по эксплуатации, Страница: 54 / 96

The plant or production facility can calibrate each pump to a back pressure
that is lower than the nominal pressure ordered.
The following pressure stages (in bar) are available:
Pump 10 16 25 40 64 100
HP2,
HP3 X X X X X X
WARNING!
ATEX pump only: Take suitable precautions in potentially
explosive atmospheres regarding the feed chemical in the
open measuring cylinder - see handling instructions below.
The dosing rate can only be calibrated when the discharge
line is connected and under normal operating conditions. As
the dosing rate is dependent upon the actual back pressure.
4
1
2
5
t
1
t
2
Q
1
Q
2
a) b)
Fig. 22: a) Adjust indicating dial, b) Schematic assembly for calibration
Materials required:
n
Measuring beaker
n
Stop watch
1. Switch off the pump.
2. Turn the stroke adjustment dial to maximum, beyond 100% to the
stop.
3. API versions only: Remove the metal cap from the stroke adjust‐
ment dial.
4. Remove the cover (4) from the stroke adjustment dial and slacken
off the screw (3) beneath slightly.
5. Guide the suction line into a measuring beaker - see Fig. 22.
6. Fill the measuring beaker with feed chemical.
7. Start the pump.
8. As soon as the system back pressure of the system has been
reached, determine the fill level Q
1
and start the stopwatch.
9. Run the pump for a while.
10. Simultaneously determine the fill level Q
2
and stop the stopwatch.
11. Calculate the dosing rate value.
12. Reduce the dosing rate using the stroke adjustment dial and repeat
steps 7 to 10 until the required value is reached.
Repairs
54