IMPORTANT: If using a frequency converter on a standard 575V motor, certain
precautions must be taken.
•
Either a special output sine filter with common-mode voltage suppression or an isolation trans-
former on the input of the converter is required.
•
If neither of these solutions is possible and it is required to operate a 575V motor on a frequency
converter, special designs are available from Franklin Electric for most motor ratings.
Motor Operation with a Soft Starter
NOTE:
When operating a motor with a soft starter, the relevant operating manual must be observed!
Set the starting voltage of the soft starter to 55% of the nominal voltage and set the running up and delay
times to max. three seconds.
Bridge the soft starter after running up, using a contactor.
MAINTENANCE AND SERVICE
The motor is maintenance-free, no maintenance or service activities are necessary.
TROUBLESHOOTING
Fault
Unusual noises, problems
with the proper running of
the pump or the pump
switching on and off too
frequently.
The pump repeatedly
switches off
SERVICE
Repairs must only be carried out by authorized professional workshops (only use original Franklin Electric
spare parts).
If you have any questions or problems, please contact your dealer or contact Franklin Electric via Internet
www.franklinwater.com
(
Try to find the cause of the fault on the pump unit.
Have the insulation resistance checked by a professional
If no cause can be found in the motor or the motor cable, have
the electrical system checked.
), phone 800-348-2420, or email techsupport@fele.com.
Remedy
MAINTENANCE AND SERVICE
Motor Operation with a Soft Starter
13