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1 Guidelines
The Franklin Electric submersible motors are a machine compo-
nent in accordance with the "machines" EC guideline. You must not
commission the motor until you have:
•
manufactured a complete machine,
•
met the safety requirements stipulated in the applicable EC
guidelines and confirmed this by a certificate of conformity.
GB
2 Safety
The 4" submersible motor must only be operated in observance of
the following safety regulations:
•
Operate the motor only under water (fig. 1/ fig. 2)
•
Take into account the implementation limits of motor and units
•
Check the electrical system and fusing before switching-on (fig.
3)
•
Protect electrical and mechanical danger spots against access
•
Vent rising pipe before commissioning in order to avoid water
hammers when starting-up
•
Provide a check valve in the pump or rising pipe (max. 7 m
away from pump) (fig. 4)
•
Water temperature with original motor filling not below -3° C,
with water filling not below 0° C (fig. 5)
•
Maximum water temperature +30° C. Higher temperatures only
with derated motors (fig. 5)
•
With generator operation always unload the generator first, i.e.
•
Start: First the generator, then the motor
•
Switch-off: First the motor, then the generator
•
After powering the system check:
•
operating current of the motor at each phase
•
mains voltage with the motor running
•
level of the medium to be pumped
•
Switch off the motor immediately if:
•
Nameplate current is exceeded
•
voltage tolerances of more than, 50Hz +6%/-10% ; 60Hz
+/-10%, compared to the rated voltage on the motor are
measured (fig. 6)
•
dry run is imminent
3 Intended use
Franklin Electric Submersible Motors are specifically designed for sub-
merged operation as drivers of variable torque loads such as pumps
i.e.
•
Drinking water supply
•
Wells in domestic houses, waterworks and agriculture
•
Dewatering, pressure boosting, irregation systems
•
Supply of process water
•
Ground water heating systems
•
Maximum 20 starts per hour, allow 60 seconds between
successive starts.
•
The maximum submergence depth is 150 meters. Up to
1000 meters after consulting Franklin Electric. Motors in 316
SS are available for operation in aggressive environments.
The responsibility for correct material choosing lies with the
customer.
Improper use of Franklin Electric Submersible Motors, like pumping of
air or explosive media is strictly prohibited.
Attention
For required motor cooling, please consult motor
nameplate etch. If cooling flow is not sufficient, fit
an inducer sleeve.
4 Transport and storage
Attention
The motor may be commissioned by trained and
instructed personnel only. Electrical connections
have only to be carried out by qualified personnel.
•
Store motor in original packaging until assembly
•
Under no circumstances may the motor be stored at tempe-
ratures above 50°C since this can lead to filling liquid leakage
and premature motor failure (fig. 7)
•
Storage temperature with original motor filling up to -40° C,
with water filling frost-free (fig. 8)
5 Connecting the motor cable
1.
Remove plastic plug on the motor.
2.
Clear plug and socket of dirt and moisture.
3.
Apply a bit of silicone grease or vaseline to the rubber part of
the plug – pay attention that no grease reaches the electrical
contacts.
Motors with round plug:
4.
Insert plug into the socket until the socket thread becomes
visible again (fig.9/10).
5.
Now turn jam nut counter-clockwise until you find the start of
the thread. Then turn clockwise and tighten it by hand, until
compression of the rubber is noticed. Now, use a 19mm open
end spanner to tighten another ½ turn.
Attention
The maximum tightening torque of the plug is 20
- 27 Nm. If the jam nut is tightened too much, the
plug will become leaky.
Motors with flat plug:
4.
Remove cable clamp screw securing strip (fig.23).
5.
Insert plug into socket and tighten the clamp screw with TX25
or slotted screw driver to 3,5-4Nm. (fig. 23/24).
6.
Route the motor leads along the pump and use the cable
guard to protect it from damage.
6 Extending the motor cable
The cable provided can be extended by the customer, by one of
the following means:
•
Apply non-permanent plug connection with Franklin Electric
Termination Kit 309 090 901 (or -902 with strain relief)
•
Use joints with shrink hose, sealing compound or finished ca-
ble fittings. Protect joints against penetrating moisture (strictly
follow manufacturer's instructions).
Note
The plumbers themselves are responsible for the
correct selection and dimensioning of the drop
cable!
•
Extension cable must be approved for its use in the medium
and the prevailing temperatures.
7 Assembly of motor and unit
These instructions refer to the motor only. Please strictly observe
the assembly instructions of the pump manufacturer!
1.
Place motor and pump horizontally and level (fig. 11).
2.
Turn motor shaft by hand before assembly. It must turn freely
after overcoming the adhesive friction.
3.
Apply acid-free, waterproof grease to the coupling internal
toothing.
4.
Remove hexagon nuts from the studs of the motor.
5.
Align the pump so that its cable guard is in line with the lead
exit of the motor and guide pump and motor together.
6.
If deemed necessary, place spring rings on the studs and
tighten the nuts crosswise. Strictly observe the tightening
torques of the unit manufacturer.
Attention
Check radial and axial clearance of the motor
shaft. There must be no rigid connection since
otherwise motor and pump will be damaged
during commissioning.
7.
Protect coupling spot against contact.
8 Electrical connection
Please observe the specifications on both the nameplate and the
enclosed data sheet. The following connection examples refer only
to the motor itself. They are no recommendation regarding the
control elements connected upstream.
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