Vogt SSD Series, Service Manual, Page: 14 / 21

Useful Tips
Useful Tips
for trouble-free operation
8.3 Pump Starts and Stops in Quick Sequence
Possible Causes Solutions
1.- The pump is turned on due to
the return flow which fills the
sump back up to the start level.
2.- The automatic contactor hold
function is malfunctioning.
Check if:
•
The distance between the start and
stop levels is sufficient.
• The length of the discharge pipe
between the pump and the
discharge basin is sufficiently short.
Check if:
• The contactor connections.
• The voltage in the control circuit
in relation to the rated voltages
in the coil.
• The operation of the start-stop
regulator.
•
Whether the voltage drop on the
line during the start-up
overvoltage causes the
automatic holding function of the
contactor to malfunction.
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