AU
14
7.5.3 Mechanical
seal
- Mount the fixed part of the mechanical seal.
- Mount the rotating part of the seal on the shaft wearing
sleeve, taking care not to damage the o-ring. Attach it to
the shaft wearing sleeve (where appropriate) with
separation bushing, and introduce it in the shaft, through
to the stopper.
- Mount the impeller until it comes into contact with the
shaft wearing sleeve.
- Firmly tighten the impeller nuts.
- Finish mounting the pump.
7.5.4 Pump
Mount the pump in reverse order to when dismounting (see
point 7.4.5)
Additional observations
:
- All the joints intervening in the dismounting of the pump
must be renewed.
- Use the bearings (320) indicated.
- Do not forget to correctly position the deflector (507)
through the window of the cover (161).
- Check the correct location of pieces,
especially the seals and impellers, and
tighten the impeller nuts as shown in the chart in point
7.5.6.
Note
- Do not forget to position all the safety and
protection elements, such as coupling guards,
before starting up the equipment.
-
The pump materials have been selected in
accordance with the process fluid indicated in the
datasheets. If this fluid is modified, check with KSB ITUR that
the new fluid is suitable for the pump.
7.5.5
Tightening torque of the screws/nuts
Steel
Stainless
steel
ISO Metric
thread
Tightening Torque in [N·m]
(for non-lubricated thread
)
M4 3.1 2.15
M5 6.1 4.25
M6 10.4 7.3
M8 25.2 17.7
M10 49.5 34.8
M12 85.2 59.9
M16 211 148
M20 412 290
M24 710 276
M27 1050 409
M30 1420 554
7.5.6
Tightening torque of the impeller nuts
Metric
thread
Tightening Torque in [N·m]
(for non-lubricated thread
)
M14x1.5 38
M20x1.5 100
M27x1.5 250
M33x1.5 460
M52x1.5 2000
