Wilo Yonos GIGA2.0-I Einbau- Und Betriebsanleitung Seite 132

en
Fig. 11: Pressing off the motor impeller unit
via threaded holes (DN 100 ... DN 125)
132
Turn of motor impeller unit relative to pump housing
NOTICE
To make the installation work easier, it can be helpful to install the pump
in the piping. Do not connect the pump electrically or fill the pump or
system.
1. Leave two transport lugs (Fig. I, Item 30) on the motor flange.
2. Attach motor impeller unit (Fig. 4) to the transport lugs with suitable lifting equipment
for protection. To prevent the unit from tipping, place a belt loop around the motor
and adapter of the electronic module as shown in Fig. 6. When attaching, avoid dam-
aging the electronic module.
3. Loosen and remove the screws (Fig. I/II/III, Item 29).
NOTICE
To unscrew the screws (Fig. I/II/III, Item 29), use an open-end spanner,
angle spanner or socket wrench with ball head, depending on the type.
We recommend that you use two mounting bolts instead of two screws
(Fig. II/III, Item 29). The mounting bolts are screwed diagonally to each
other through the drilled hole in the lantern into the pump housing.
The installation bolts make it easier to avoid damaging the impeller when
dismantling the motor impeller unit and then reinstalling it.
4. Loosen the screw (Fig. I/III, Item 29, Fig. II, Item 10) to remove the holder for the differ-
ential pressure sensor (Fig. I, Item 13) from the motor flange. Suspend the differential
pressure sensor (Fig. I, Item 8) with the holder (Fig. I, Item 13) from the pressure sens-
ing 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 sens-
ing lines.
5. Detach the motor impeller unit (see Fig. 4) from the pump housing.
Depending on the pump type (see Fig. I ... III), there are various different approaches.
For the pump type Fig. I (DN 32 ... DN 80), loosen the screws (Item 29). Press the motor
impeller unit off the pump housing.
1
For pump type Fig. II and Fig. III (DN 100 ... DN 125) use the two threaded holes (Fig. 11,
Item 1). Use suitable screws provided on-site (e.g. M10 x 25 mm) for this.
NOTICE
For the following steps, observe the screw tightening torque specified for
the respective thread type! See table "Screws and tightening torques"
[" 135].
6. If the O-ring has been removed, moisten the O-ring (Fig. I, Item 19) and insert it into the
pump housing (DN 32 ... DN 80) or into the lantern groove (DN 100 ... DN 125).
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.
Installation and operating instructions • Wilo-Yonos GIGA2.0-I/-D • Ed.01/2023-03