7 Servicing/Maintenance
59 of 72
HPK
7.5.5 Fitting the back pull-out unit
WARNING
Back pull-out unit tilting
Risk of crushing hands and feet!
▷
Suspend or support the bearing bracket at the pump end.
ü
The notes and steps stated in
(
ð
Section 7.5.1, Page 54)
to
(
ð
Section 7.5.4, Page 58)
have been observed/carried out.
ü
Any damaged or worn parts have been replaced by original spare parts.
ü
The sealing surfaces have been cleaned.
ü
For back pull-out units supplied without coupling: Fit the coupling in accordance
with the manufacturer's instructions.
1.
If required, suspend or support the back pull-out unit to prevent it from tipping
over. Then slide it into volute casing 102 with a new gasket 411.10.
2.
Tighten nut 920.01 at the volute casing.
3.
Bolt support foot 183 to the baseplate.
7.5.6 Mounting the motor
NOTE
Steps 1 and 2 do not apply to versions with spacer-type coupling.
1.
Shift the motor to connect it to the pump via the coupling.
2.
Fasten the motor to the baseplate.
3.
Align pump and motor.
4.
Connect the motor to the power supply (refer to manufacturer's product
literature).
7.6 Tightening torques
7.6.1 Tightening torques
Use a torque wrench to tighten the screwed connections (902.01/920.01) between the
volute casing and the bearing bracket lantern.
11)
Treat unstamped screwed connections like material pair C35/E+QT/C 35.
12)
These values are determined on the basis of a friction coefficient of μ = 0.12.
13)
After repeated tightening of the threads and in case of good lubrication the values shall be reduced by 15 to 20 %.