Positional Requirements - Grundfos SP Serie Montage- Und Betriebsanleitung

4.1.3 Grundfos submersible motors MMS 6000, MMS 8000,
MMS 10000 and MMS 12000
Filling procedure:
1. Place the motor at a 45 ° angle with the top of the motor
upwards, see fig. 4.
2. Unscrew the plug A and place a funnel in the hole.
3. Pour tap water into the motor until the motor liquid inside the
motor starts running out at A.
Caution: Do not use motor liquid as it contains oil.
4. Remove the funnel and refit the plug A.
Before fitting the motor to a pump after a long
period of storage, lubricate the shaft seal by
Caution
adding a few drops of water and turning the
shaft.
The submersible pump is now ready for installation.
A
Fig. 4 Motor position during filling – MMS
4.1.4 Franklin submersible motors from 3 kW and up
The level of the motor liquid in Franklin 4" and 6" submersible
motors is checked by measuring the distance from the bottom
plate to the built-in rubber diaphragm. This distance can be
measured by inserting a rule or a small rod through the hole until
it touches the diaphragm, fig. 5.
Caution Take care not to damage the diaphragm.
Fig. 5 Measuring the distance from bottom plate to
diaphragm
The following table shows the correct distance from the outside of
the bottom plate to the diaphragm:
Motor
Franklin 4", 0.25 to 3 kW
(see fig. 6a)
Franklin 4", 3 to 7.5 kW
(see fig. 6b)
Franklin 6", 4 to 45 kW
(see fig. 6c)
Franklin 6", 4 to 22 kW
(see fig. 6d)
8
45°
A C1
B C2
Dimension Distance
A 8 mm
B 16 mm
C1 35 mm
C2 59 mm
6a
6c
Fig. 6 Franklin submersible motors
If the distance is not correct, carry out an adjustment as
described in section 4.1.5 Franklin submersible motors.
4.1.5 Franklin submersible motors
The level of the motor liquid in Franklin 8" submersible motors is
checked as follows:
1. Prise out the filter in front of the valve at the top of the motor
using a screwdriver. If the filter is slotted, unscrew. The
position of the filling valve is shown in fig. 7.
2. Press the filling syringe against the valve and inject the liquid,
fig. 7. If the valve cone is depressed too far, it may be
damaged thus causing the valve to leak.
3. Remove any air in the motor by pressing the point of the filling
syringe lightly against the valve.
4. Repeat the process of injecting liquid and releasing air until
the liquid starts running out or the diaphragm is in its correct
position (Franklin 4" and 6").
5. Reinstall the filter after refilling with liquid.
The submersible pump is now ready for installation.
Fig. 7 Position of filling valve

4.2 Positional requirements

Warning
If the pump is to be installed in a position where
it is accessible, the coupling must be suitably
isolated from human touch. The pump can for
instance be built into a flow sleeve.
Depending on motor type, the pump can be installed either
vertically or horizontally. A complete list of motor types suitable
for horizontal installation is shown in section 4.2.1.
6b
6d