Re-Assembly; Motor; Tightening Torques - salmson S Serie Manuel D'installation Et Mise En Service

Stainless steel variants :
1. Remove mechanical seal housing fastening screws 6570 from housing
4211.
2. Remove mechanical seal housing 4211.
3. If necessary remove stationary seat and leap seal.
4. Slide out the shaft sleeve.
5. Depending on pump size : remove rear wear plate fastening screws
6570.
6. Remove rear wear plate and gasket 4510.
9.3.1.3 COMPLETE DISMANTLING OF BEARING BRACKET
ASSEMBLY
Biblock variant with IEC adaptation lantern :
1. Remove motor fastening screws 6580.
2. Remove the motor 8100 with the half coupling 7200.2 on.
3. Take the coupling flexible part 7310 apart.
4. Unscrew half coupling stop screw and slide it out from the shaft.
Ball bearings removal :
1. Remove screws 6570 from rear ball bearing cover 3011.
2. Take the cover 3260 apart.
3. Slide out the shaft 2100 with the two ball bearings 3011 from the
bearing housing 3200.
4. Withdraw stop ring 6544.
5. Press out ball bearings 3011 from the shaft.
9.3.1.4 COMPLETE DISMANTLING OF THE CASING
One piece casing :
1. Remove wear plate fastening screws 6570.
2. Take front wear plate 1915 apart.
Non return valve :
1. Remove suction flange fastening nuts 6580.
2. Remove the suction flange 1139.
3. Remove the non return valve assembly 5420.
9.3.2 RE‐ASSEMBLY
Before starting assembly of the pump consult the sectional
drawing.
Respect screws and bolts tightening torques.
Check that threads, bearing and gaskets surfaces are clean.
9.3.2.1 ASSEMBLY OF BEARING BRACKET
1. Clean with care the inside of the bearing housing 3200 and the surface
of ball bearings housings.
2. The following methods are recommended to fit the bearings on the
shaft :
rst
1 method : Use a hot plate, hot bath, oven or an induction heater to
heat the bearing race so that it can be easily slided onto the shaft. It will
then shrink and grip the shaft. Heating temperature should never exceed
100°C.
nd
2 method : Press the bearing onto the shaft using a hand press. Make
sure the force is applied on inner bearing race. Take care to avoid
damaging the shaft or the bearing.
3. Slide the assembly in the bearing housing.
4. Install bearing cover and tighten fastening screws.
9.3.2.2 ASSEMBLY OF MECHANICAL SEAL
Assembly is performed in the reverse steps of dismantling.
Using the section drawing of the pump will be necessary.
Extreme cleanliness is required when installing the mechanical
seal onto the shaft sleeve. Avoid damaging the seal faces and the
O'Ring. (shaft must be free from scratches, burrs, ...).
It is recommended to apply lightly grease or a neutral oil to ease
assembly.
Make sure the leap seal is installed in the indicated direction. See sketch
below :
Location of the rotating part of the mechanical seal don't have to
be set. Mechanical seal is set per construction.
All gaskets should be replaced by new ones before assembly. Make sure
PFTE and fiber based gaskets are not bent or broken when handled and
installed.
9.3.3 MOTOR
In order to ensure an optimum lifetime of the integrated motor a
minimum maintenance is necessary : clean cooling fins regularly, check
coupling alignment (if any), check cable gland tightening, ...
Ball bearing lifetime depends on axial and radial forces applied on motor
shaft therefore on the pump design (close‐coupled pump, pump sets
with elastic coupling, ...).
Motor can be fitted with lifetime lubricated ball bearings (identified ZZ
or 2Z) or greased. Greasing nipples are located at the ball bearings and
re‐greasing quantities are indicated on motor nameplate.
See motor instructions manual to find data about maintenance work to
be performed.
9.4 TIGHTENING TORQUES
Tightening torques depend on the material used in the assembly and on
the type of lubricant that is used.
Refer to applicable regulation to know the tightening torques for
the fastening of cast iron or stainless steel made flanges.
The values given below should be only indicative. If real tightening
torques are required please ask our technical services.
Threads
M10
M12(*)
M14
M16
M18
M24
M30
(*) : tightening torque for impeller check port and drain port fastening
nuts : 25Nm.
Stainless steel bolts : apply anti‐fretting paste before assembly.
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ENGLISH
Tightening torques
M6 9 Nm
M8 23 Nm
46 Nm
80 Nm
130 Nm
150 Nm
180 Nm
250 Nm
300 Nm