Wilo -Stratos GIGA2.0-I Einbau- Und Betriebsanleitung Seite 142

en
Fig. 10: Pressing off the motor impeller unit
via threaded holes
142
sure sensor (Fig. I, Item 8) with the holder (Fig. I, Item 13) from the pressure sensing
lines (Fig. I, Item 7). Disconnect the connection cable of the differential pressure sensor
in the electronic module, if necessary, or loosen the union nut of the cable connection
on the differential pressure sensor and remove the plug.
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 sens-
ing lines.
5. Press the motor impeller unit (see Fig. 4) off the pump housing. Depending on the pump
type (see Fig. I ... Fig. III), there are two different approaches.
For the pump type (Fig. III), loosen the screws (Item 29). Use the two adjacent threaded
1
holes (Fig. 10, Item 1) and use suitable screws provided on-site (e.g. M10 x 25 mm).
For the pump type (Fig. I and Fig. II), use the two threaded holes M10 (Fig. 99). Use suit-
able screws provided on-site (e.g. M10 x 20 mm). The slots (Fig. 99, Item 2) can also be
used for pressing off.
NOTICE
For the following steps, observe the screw tightening torque specified for
the respective thread type! See "Screws and tightening torques [} 145]"
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 position.
8. Screw in the screws (Fig. I, Fig. II 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.
After tightening the screws (Fig. I, Fig. II and Fig. III, Item 29), check the ro-
tatability of the shaft with an Allen key 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) or re-
store the plugged connection on the differential pressure sensor.
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.
To facilitate the optimal positioning of the pressure sensing lines, the differential pressure
sensor can be separated from the holder (Fig. I, Item 13), rotated by 180° around the longit-
udinal axis and reinstalled.
Installation and operating instructions • Wilo-Stratos GIGA2.0-I, Wilo-Stratos GIGA2.0-D • Ed.02/2022-07