
8 Trouble-shooting
17 of 20
M 1 (K) Alarm Contactor
8 Trouble-shooting
A
Alarm is not activated
B
Alarm is not deactivated
Table 6:
Trouble-shooting
A
B
Possible cause
Remedy
✘
No voltage.
Check electrical connections.
✘
Reed contact defective
Carry out continuity check on alarm
contactor with an ohmmeter; consult
KSB service, if necessary.
✘
✘
Float blocked by dirt, fibres, or fluff.
Clean float and sensor tube.