Mechanical Installation; Removing And Fitting The Cable Guard; Fitting Of The Submersible Drop Cable And Motor Cable - Grundfos SP Installation And Operating Instructions Manual

8. Mechanical installation

WARNING
Sharp element
Death or serious personal injury
‐
When mounting the facilitating pipe, wear personal
protective equipment to avoid cutting on sharp edges
on the pump.
WARNING
Contamination when pumping drinking water
Death or serious personal injury
‐
Before the pump is used for supplying drinking water,
flush the pump thoroughly with clean water.
‐
Do not use the pump for drinking water if the internal
parts have been in contact with particles or
substances not suitable for water intended for human
consumption.
The pump must be installed according to national water
regulations and standards.
Be careful not to ben or damage long pump sets, when
moving them from horizontal to vertical positions.

8.1 Removing and fitting the cable guard

The cable guard is screwed on to the pump, it must be removed
and fitted by means of screws. See appendix.
Make sure that the pump chambers are aligned when the
cable guard has been fitted.
8.2 Fitting of the submersible drop cable and motor
cable
Before connecting the submersible drop cable to the motor, make
sure that the cable socket is clean and dry.
To facilitate the connection of the cable, lubricate the rubber parts of
the cable plug with non-conducting silicone paste.
Tighten the screws holding the cable to the torques stated [Nm]:
MS402:
MS4000:
MS6000/MS6000P:
MMS6:
MMS8000:
MMS10000:
MMS12000:
Connect the motor cable to the drop cable by use of original
Grundfos cable termination kits, such as shrink tube type KM or
cable termination kit type M0 to M4.
If necessary, shorten the motor cable to ensure that it is always
covered with pump medium prior to making the cable jointing as
described above.
Staybolt diameter
5/16 UNF
1/2 UNF
M8
M12
M16
M20
Staybolt diameters and torques
3.1 Nm
3.0 Nm
4.5 Nm
20 Nm
18 Nm
18 Nm
15 Nm.
Torque
[Nm]
18
50
18
70
150
280
19