Wilo Yonos GIGA2.0-I Installation And Operating Instructions Manual page 127

6.4.4 Turn of the drive (DN 100,
DN 125)
Installation and operating instructions Wilo-Yonos GIGA2.0-I/-D
Installation
The drive consists of a motor and an electronic module.
Turn of the drive relative to pump housing
The lantern position is maintained, the air vent valve points upwards.
NOTICE
The following work steps provide for dismantling of the mechanical seal. In indi-
vidual cases, the mechanical seal and the lantern O-ring may be damaged. We re-
commend that you order a mechanical seal service kit before turning.
An undamaged mechanical seal can be reused.
1. Leave two transport lugs (Fig. I, Item 30) on the motor flange.
2. Attach drive to the transport lugs with suitable lifting equipment for protection. To
prevent the unit from tipping, place a belt loop around the motor. When attaching,
avoid damaging the electronic module (Fig. 6/7).
3. Realignment may require reversing the orientation of the holder for the fixation of
the differential pressure sensor. To do this, loosen and unscrew both screws of the
holder (Fig. I, Item 13).
4. Loosen and remove the screws (Fig. II, Item 29).
NOTICE
To unscrew the screws (Fig. II, Item 29), use an open-end spanner, angle spanner or
socket wrench with ball head, depending on the type.
5. Press the motor impeller unit (see Fig. 4) off the pump housing. Use the two
threaded holes for this (see Fig. 11). Screw M10 screws with a suitable length into
the threaded holes to loosen the seat.
6. Place the motor impeller unit including the mounted electronic module on a suit-
able workstation and secure it.
7. Release the two non-detachable screws from the protective plate (Fig. II, Item 27)
and remove the protective plate.
8. Put an open-end wrench with 27 mm width across flats into the lantern window
and hold the shaft steady at the wrench flats (Fig. II, Item 16). Unbolt the impeller
nut (Fig. II, Item 22). Remove the impeller (Fig. II, Item 21) from the shaft with a
puller.
9. Loosen the screw (Fig. II, Item 10) to remove the holder for the differential 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 sensing
lines (Fig. I, Item 7). Disconnect the connection cable of the differential pressure
sensor in the electronic module, if necessary.
10. Loosen and remove the screws (Fig. II, Item 10 and Item 10a).
11. Release the lantern from the motor centring device with a two-arm puller (univer-
sal puller) and pull it off the shaft. The mechanical seal (Fig. I, Item 25) will also be
removed when this is done. Avoid jamming the lantern.
12. If the mechanical seal has been damaged, push the stationary ring (Fig. I, Item 26)
of the mechanical seal out of its seat in the lantern. Insert a new stationary ring in
the lantern.
NOTICE
For the following steps, observe the screw tightening torque specified for the re-
spective thread type! See table "Screws and tightening torques" [} 128].
13. Carefully push the lantern over the shaft and position it in the desired alignment to
the motor flange. Observe the permitted installation positions of the components
when doing this. Secure the lantern to the motor flange with the screws (Fig. II,
Item 10 and Item 10a). Tighten the screw for the holder (Fig. II, Item 10) only
slightly.
14. Push the undamaged or new mechanical seal (Fig. I, Item 25) onto the shaft.
en
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