Operation Manual / Power2 850-M / 4.1 Low-pressure stage
4 Disassembly and assembly / 4.7 Removing the wall insert
© Copyright 2020 ABB. All rights reserved.
HZTL4062_EN
Rev.C
July 2020
4.7
Removing the wall insert
CAUTION
Clearance between compressor wheel and wall insert
Serious damage to machinery or property can result from rubbing or jam-
ming of the compressor wheel at the wall insert.
u
Check that the compressor wheel does not rub against the wall insert
during disassembly/assembly by rotating the rotor.
Fig. 7: Removing wall insert 1
1. Screw nut (72004) onto end of bolt thread as protection.
2. Use three press-off screws (90920) to press off the wall insert (77000) until the lifting
device can be fitted.
3. Remove the press-off screws (90920).
4. Remove two studs (72002) in the upper area.
Fig. 8: Removing wall insert 2
5. Unplug cable connector (86515) and fix speed measurement cable in wall insert.
6. Fit bracket (90030) with screws (90955) and nuts (90415).
Fit two plates (90031) and secure with plate (90032), screw (90656) and nut (90432).
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