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8.1 Fusing and motor protection
1.
be able to switch the system dead at any time.
2.
3.
Allow for a motor overload protection in the switchbox
GB
GB
•
Warranty is void without thermal protection
•
•
•
4.
Allow for an emergency stop.
8.2 Earthing
Consider motor power rating when dimensioning
•
Motor has to be earthed.
•
Provide good contact of the protective con-
ductor terminal.
8.3 Lightning protection
Various models already feature a over-voltage protection ex-works.
For all other models please consult Franklin Electric.
8.4 Connecting examples
1.
direction of rotation corresponds to that of the unit. The
connection features the usual circuit with a clockwise
motor shaft.
2.
3.
4.
8.5 Operation with a soft starting device
•
•
seconds.
•
Soft starting device has to be bridged after acceleration
with a contactor.
•
Please strictly observe the manufacturer's operating
instructions.
8.6 Operation with variable frequency drives
For operation with variable frequency drives please consult Fran-
klin Electric.
9 Work on the motor
Attention
on the entire system please strictly observe the
appropriate instructions of the motor and unit
manufacturer.
Never open the motor since it can only be shut
to the motor or its electrical connections.
After completion of the work apply all safety and
protective devices completely and check for their
function
N
9.1 Determining motor production date
The production date of your submersible motor is marked
alongside the motor name plate:
Franklin Electric submersible motors are a water lubricated de-
required. Loss of a few drops of liquid will not damage the motor as
well water upon installation.
If there is reason to believe there has been a considerable amount
of leakage, please consult the factory for checking procedures.
Do not attempt to open the motor since it can only be shut and
9.3 Measuring the insulation resistance
Perform this measurement before and while the assembled unit
is lowered to the place of application.
Minimum insulation resistance with extension cable:
•
for a new motor >
•
for a used motor >
Minimum insulation resistance without extension cable:
•
for a new motor >
•
for a used motor >
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