Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
8.1 Fusing and motor protection
1.
Allow for an external mains switch 1 (fig. 12) in order to
be able to switch the system dead at any time.
2.
Allow for fuses for each individual phase (fig. 13)
3.
Allow for a motor overload protection in the switchbox
(fig. 14)
GB
•
Warranty is void without thermal protection
•
Motor protection according to EN 60947-4-1
•
Trip time at 500% I
•
overload setting at operation current (max. IN)
4.
Allow for an emergency stop.
8.2 Earthing
Consider motor power rating when dimensioning
the earth connection in accordance with IEC 364-
5-54 and EN 60034-1.
•
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.
3-phase connection (fig. 15). Connect motor so that its
direction of rotation corresponds to that of the unit. The
connection features the usual circuit with a clockwise
rotating field and an counter clockwise rotation for the
motor shaft.
2.
Super Stainless 2-wire connection (fig. 16)
3.
Super Stainless 3-wire connection (fig. 17)
4.
Super Stainless PSC (Fig.: 18)
8.5 Operation with a soft starting device
•
Adjust soft starter to 55% of the rated voltage
•
Adjust acceleration and deceleration time to max. 3
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
De-energize system to the beginning of the work
and protect it against unintented re-energizing
(fig. 22).
Regarding the trouble shooting and rectification
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
and adjusted with special tools.
Do not carry out any modifications or conversions
to the motor or its electrical connections.
After completion of the work apply all safety and
protective devices completely and check for their
function
< 10 sec. (cold bi-metal)
N
9.1 Determining motor production date
The production date of your submersible motor is marked above /
alongside the motor name plate:
9.2 Checking/ replenishing the motor filling
Franklin Electric submersible motors are a water lubricated design.
The motors are factory prefilled with a mixture of water and non-to-
xic antifreeze (FES93). No re-filling prior to installation is required.
Loss of a few drops of liquid will not damage the motor as the
filter check valve will allow lost liquid to be replaced by filtered 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
adjusted with special tools.
9.3 Measuring the insulation resistance
Perform this measurement before and while the assembled unit
is lowered to the place of application.
The motor is ok if the insulation resistance at 20 °C is at least:
Minimum insulation resistance with extension cable:
for a new motor > 4 MΩ
•
•
for a used motor > 1 MΩ
Minimum insulation resistance without extension cable:
•
for a new motor > 400 MΩ
•
for a used motor > 20 MΩ
Publicité
Table des Matières
