ALLDOS KM 255, Руководство по эксплуатации

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KM 255 en Start-up/Shutdown
V1.0 31
from this value, adjusting the zero point will ensure that the values are more precise.
Counterpressure for zero point setting of the pump at the factory
7.4.2 Adjusting the Zero Point
!
Warning
When dosing dangerous media, observe the corresponding safety precautions!
When working on the dosing head, connections or lines:
wear the necessary protective clothing (goggles, gloves! Always adjust the value
with the pressure line connected and with operating counterpressure.
1. Fit a measuring device on the suction side, e.g. place the suction line in a graduated
measuring beaker.
2. Set dosing flow to 15%.
3. Remove cover (1l) from stroke adjustment button (L).
4. Use a screwdriver to loosen the locking screw (21) by approximately 2 rotations.
5. Switch on the pump.
6. Turn the stroke adjustment button slowly towards the zero point, until the dosing (the
liquid level falls) stops in the measuring device.
7. Switch off the pump.
8. Set the scale ring (4l) to zero
8.1 Loosen the screw (3l) in the scale ring (4l) slightly using an Allan wrench M3,
8.2 Turn the scale ring (4l) until both “0” are the same on the scale and scale ring.
8.3 Tighten screw (3l).
9. Depending on the application, tighten the locking screw (21) so that the stroke adjust-
ment button can still be turned/cannot be turned any more.
10. Replace cover (1l).
7.5 Operating the pump
Note
When operating the pump, refer to the section “Operating the pump”, “Operating
the pump electronics “ (only for Etron Profi Electronics), as well as “Maintenance”
and if necessary for troubleshooting, the section “Possible faults”.
Bleed pressure of
the pump [bar]
Counterpressure for zero point setting
of the pump at the factory [bar]
10 3
L Stroke adjustment button
1l Cover
2l Locking screw
3l Screw
4l Scale ring
3l 2l 1l
4l
3l
L