Wilo Stratos GIGA2.0-I Notice De Montage Et De Mise En Service page 156

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Fig. 10: Pressing off the motor impeller unit via
threaded holes
156
Installation
sensing lines (Fig. I, Item 7). Disconnect the connection cable of the differential
pressure sensor in the electronic module, if necessary.
CAUTION
Material damage due to bent or kinked pressure sensing lines.
Improper handling can damage the pressure sensing line.
When turning the motor impeller unit, do not bend or kink pressure sensing lines.
5. Press the motor impeller unit (see Fig. 4) off the pump housing. Use the two
threaded holes for this (see Fig. 10). Screw M10 screws with a suitable length into
the threaded holes to loosen the seat.
NOTICE
For the following steps, observe the screw tightening torque specified for the re-
spective thread type! See "Screws and tightening torques [} 159]" table.
6. If the O-ring has been removed, moisten the O-ring (Fig. I, Item 19) and insert it
into the lantern groove.
NOTICE
Always make sure that the O-ring (Fig. I, Item 19) is not twisted or squeezed during
installation.
7. Insert the motor impeller unit (Fig. 4) into the pump housing in the desired posi-
tion.
8. Screw in the screws (Fig. I and Fig. III, Item 29) evenly crosswise, but do not tighten
them yet.
CAUTION
Damage due to incorrect handling!
Not screwing the screws in properly can lead to sluggishness of the shaft.
While screwing in the screws, check the rotatability of the shaft with a socket
wrench on the fan wheel of the motor. If necessary, loosen the screws again and
tighten them evenly crosswise.
9. Clamp the holder (Fig. I, Item 13) of the differential pressure sensor under one of
the screw heads (Fig. I, Item 10) on the side opposite the electronic module. Find
optimum between laying the capillary tubes and DPS cable. Then tighten the
screws (Fig. I, Item 10).
10. Reconnect the connection cable of the differential pressure sensor (Fig. I, Item 8).
When reinstalling the differential pressure sensor, bend the pressure sensing lines as
little as possible and evenly into a suitable position. When doing this, do not deform the
areas at the clamp boltings.
WILO SE 2021-12