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Operating Instructions
9.2.10 Clearances for heat dissipation
Motor size
Min. clearance between
motor and adjacent surface
[mm]
-
35
Tab. 17 Min. clearances for heat dissipation
9.3 Tightening torques
9.3.1
Screws
►
Tighten the screws by means of a torque wrench.

The following values apply to new screws on the casing
(101).
Size
Property class
Tightening torque
[Nm]
M5
A2 / A4-70
2.5
Tab. 18 Tightening torques for screw
9.3.2
►
Motor clamp
The worm drive hose clamp on the canned motor has to be
tightened by means of a torque wrench. The permissible
tightening torque ranges between 3 and 5 Nm.
9.4 Screw fittings
9.4.1

With cylindrical external thread
The following values apply to new screw fittings in cast-iron
casings.
Size
G 1/4 A
Tightening torque [Nm]
Brass
Stainless
steel
PPS
19.7
25.0
8.3
Tab. 19 Tightening torque for cylindrical screw fittings
9.4.2

With conical external thread
The above specified tightening torques do not apply to
screw fittings with conical screw-in threads. Here, tightness
is not achieved by using a specific tightening torque but by
additional sealing material (e.g. sealing tape, adhesive).
9.5 Permissible forces / torques acting
on the pump nozzles
►
The connection nozzles must not be subjected to any
forces and torques exerted by media pipes.
9.6 Accessories
Accessories included in the scope of supply are listed on the
delivery note.
08/2010
1096.0909 | Y-2951W-MM
23