Evoqua V10K - Page 23

V10k automatic 5. Operation
23
EN
For more information see the manual of the control unit.
Tooth wheel defective Check toothes and clamping of
the tooth wheel, replace
motor-gear if necessary.
3Rack moves to the
wrong direction.
Wrong electric wiring Check the terminals connec-
tions (change terminal 2 and 3)
4Rack moves to the
stop.
Limit switch misadjusted or
defective
Adjust positioner
5Feedback signal can-
not be aligned.
Potentiometer misadjusted Check potentiometer adjust-
ment
Potentiometer defective
(1kOhm ± 10%)
Replace board (Note: special
potentiometer, may not be
replaced by a standard poten-
tiometer)
Wiring and terminals
defective
Check wiring and terminals to
the board
Toothed wheels or potentio-
meter shaft loose
Adjust potentiometer and
clamp toothed wheels
6 Positioner moves
without finding the
right position.
Potentiometer defect or
loose
Check potentiometer resis-
tance while moving the rack by
hand, if necessary replace
potentiometer.
Cable to the control unit
loose
Check the cables.
Capacitor defective Replace the board.
7 Positioner moves fore
and back.
Positioner not correctly
fixed to the mounting plate
or potentiometer loose
Check mounting.
8 Movement too slow Load too great, e.g. by bad
alignment
Check load, check positioner
without load, check alignment.
No. Symptoms Probable cause Remedy