Remounting - FLOWTECH flowboost F.V Operation And Maintenance Manual

Remounting

To remount the components follow the dismantling procedure in inverse order.
Check the state of the O-rings and replace them if they are damaged. Make sure that the O-rings are
correctly inserted on their seats on the pump casing and upper cover. Lubricate the seal rings with clean
water or any other compatible lubricant.
Tightening torque
Type
Impeller Nuts (28.04)
Nuts (61.04) on tie-bolts
Screws (64.25) in the coupling
Screws (70.18) with nuts (70.19
Type
impeller nuts (28.04)
nuts (61.04) on tie-bolts
screws (61.07) lantern upp. cov
screws (32.74) lantern upp. cov
screws (32.04) flange for seal
screws (64.25) in the coupling
screws (64.25) in the coupling flange
screws (70.18) with nuts (70.19)
When tightening the nuts, be careful not to scratch the shaft with the second wrench used on the opposite
side.
ATTENTION: the nuts on the tie-bolts, the screws on the upper cover and the screws with the nuts on the
lantern bracket must be uniformly tightened with alternated crossover tightening procedure in diametrically
opposite positions.
Axial position of the pump rotor
In the vertical position and from the resting position (fig.6a), raise the rotor, levering on a pin inserted in the
hole in the shaft, until the pin can be rested under the coupling. In this position (fig. 6b), by tightening the
screws uniformly, the shaft is locked tight in the coupling. Remove the pin.
Only for 50, in the vertical position from the resting position screw up the screws without blocking the shaft,
so screw up the screw (fig.6c) in the coupling until the screw is supported. In this position, by tightening the
screws uniformly, the shaft is locked tight in the coupling.
Mount the motor.
flowboost
25-32-40-50
8 Nm
50Nm
-
-
50
30 Nm
50 Nm
-
25 Nm
4 Nm
40 Nm
40 Nm
40 Nm
F.V Pump Manual
17