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Idiomas disponibles
Idiomas disponibles
8.1 Fusing and motor protection
1. Allow for an external mains switch 1 (fig. 11) in order to be able to switch the
system dead at any time.
2. Allow for fuses for each individual phase (fig. 12)
3. Allow for a motor overload protection in the switchbox (fig. 13)
GB
GB
• Warranty is void without thermal protection
• Motor protection according to EN 61947-4-1
• Trip time at 500% I
< 10 sec. (cold bi-metal)
N
• overload setting at operation current (max. I
4. Allow for an emergency stop.
8.2 Earthing
Following a new installation or maintenance works of the motor-driven pump
system, it is required to carry out a resistant measurement on the earth wire.
This measurement is to be done in compliance with the applicable regulations
and with the appropriate measuring devices.
Consider motor power rating when dimensioning the earth con-
nection in accordance with IEC 364-5-54 and EN 60034-1.
•
Motor has to be earthed.
•
Provide good contact of the protective conductor 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. 14). 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. 15)
3. Super Stainless 3-wire connection (fig. 16)
4. Super Stainless PSC (Fig.: 17)
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 (VFD)*
Note: When operating a FE 3 phase submersible 4" motor
with a frequency converter, please strictly observe the VFD
manufacturer's operating instructions!
Ö Make sure that the motor current in all operating levels of the
regulating range does not exceed the nominal motor current
indicated on the type plate.
Ö Adjust the frequency converter so that the limit values for
the nominal motor frequency of min. 30 Hz and max. the
value of the nominal motor frequency (50 or 60 Hz), for PM
motors min.60Hz and max. the nominal motor frequency
(100 or 120Hz) are observed.
Ö Limit any voltage peaks on the motor when using a frequen-
cy converter to the following values:
Ö max. voltage rises 500 V/µs, max. voltage peak 1000V.
Ö Make sure that the running up time from 0 to 30 Hz (PM
Motors from 0 to 60 Hz) and the deceleration time from
30 to 0 Hz (PM Motors from 60 to 0 Hz) is maximum one
second.
Ö Dimension the cable such that power loss due to additional
filters is taken into consideration.
Ö Make sure that the required coolant flow speed along the
motor is also observed with frequency converter operation.
*Franklin Electric 4" single-phase motors are not recommanded
for operation with VFD. Please contact
Franklin Electric.
)
N
6
9 Work on the motor
Attention
De-energize system to the beginning of the work and protect it
against unintented re-energizing (fig. 20).
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.
9.1 Determining motor production date
The production date of your submersible motor is marked above / alongside the
motor name plate:
23 A 66 12 - 00001C
Year of
Month of
manufacturing
manufacturing
(e.g. 2023)
A = January
B = February
M = December
( I = not use)
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-toxic 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
10 Disposal
Dispose of the motor in compliance with the statutory regulations.
Damage to environment due to wrong disposal!
Packaging materials are valuable raw materials and, in many cases,
they can be reused or processed and recycled.
► Electronic scrap, electronic components, lubricants and other
auxiliary materials are subject to hazardous waste treatment
and may only be disposed of by authorised specialist
companies.
► The motor or parts of the motor may not be disposed of in the
household waste.
The local municipal authority or disposal specialist companies
provide information on environmentally compatible disposal.
Place of
Production
manufacturing
sequence number
ATTENTION
NOTE
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