Grundfos SP Series Installation And Operating Instructions Manual page 7

Fig. 4 Motor position during filling - MS 6000
5.2.3 Grundfos MMS 6, MMS 8000, MMS 10000 and MMS
12000 motors
Filling procedure:
Place the motor at a 45 ° angle with the top of the motor upwards.
See fig. 5.
1. Unscrew the plug (A) and place a funnel in the hole.
2. Pour tap water into the motor until the motor liquid inside the
motor starts running out at the plug (A).
1. Place the motor at a 45 ° angle with the top of the motor
upwards. See fig. 5.
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 of A.
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 adding a few
drops of water and turning the shaft.
The submersible motor is now ready for assembly with the pump
and ready for installation.The submersible pump is now ready for
installation.
A
Fig. 5 Motor position during filling - MMS
5.2.4 Franklin motors from 3 kW and up
Check the level of motor liquid in Franklin 4" and 6" motors by
measuring the distance from the bottom plate to the built-in
rubber diaphragm. The distance can be measured by inserting a
rule or a small rod through the hole until it touches the diaphragm.
See fig. 6.
Caution
Take care not to damage the diaphragm.
45°
45°
Fig. 6 Measuring the distance from bottom plate to
diaphragm
The table below shows the correct distance from the outside of
the bottom plate to the diaphragm:
Motor
Franklin 4", 0.25 - 3 kW
(fig. 7a)
Franklin 4", 3 - 7.5 kW
(fig. 7b)
Franklin 6", 4-45 kW
(fig. 7c)
Franklin 6", 4-22 kW
(fig. 7d)
6a
6c
Fig. 7 Franklin motors
If the distance is not correct, carry out an adjustment as
described in section 5.2.5 Franklin motors.
Distance
Dimension
[mm]
A 8
B 16
C1 35
C2 59
6b
6d
7