WIK USER INSTRUCTIONS ENGLISH BO2662 5/09
Page 61 of 76
outlined in interference fit part installation
(section 6.9.1.1) above.
4) Place the shaft on the base assembly as
follows:
a) Install lifting gear, if necessary, on the
suction spacer casing [1130] and place it
on the legs of the base assembly. Remove
lifting gear, if installed.
b) Install shaft hoisting fitting on thrust collar
locknut [3712.2] threads at free end of
shaft [2100].
c) With nylon lifting strap under shaft [2100]
at coupling side of suction impeller
[2200.1] and soft cable in shaft hoisting
fitting, use two hoists to lift the shaft [2100]
into a vertical position. Remove the nylon
lifting strap.
d) Set coupling end of shaft [2100] into base
assembly. Remove the lifting gear and
shaft hoisting fitting.
5) Adjust the legs of the base assembly so that
the inboard edge of the suction impeller
[2200.1] shroud vane passage area is flush
with the adjacent face of the suction spacer
casing [1130].
6) Assemble the remaining stages, except the
discharge stage, as follows:
a) Install the intermediate cover [1460] or
destaging spacer (if installed) using the
procedure outlined in interference fit part
installation (section 6.9.1.1) above. Ensure
that the assembly rail slots in the covers
are aligned by test fitting the assembly rail
[9363] after each cover is installed.
b) Install split ring [2531.1] (if installed) and
impeller key(s) [6700.4], ensuring that
ends of split ring [2531.1] match evenly.
c) Install the impeller [2200] on the impeller
key(s) [6700.4] and against the split ring
[2531.1] (or shaft shoulder, if no split ring
is installed), using the procedure outlined
in interference fit part installation (section
6.9.1.1) above.
7) Assemble the discharge stage as follows:
a) Install the discharge spacer casing [1140]
using the procedure outlined in
interference fit part installation (section
6.9.1.1) above. Install the assembly rail
[9363] in slots in covers.
b) Install split ring [2531.1] (if installed) and
impeller key(s) [6700.4], ensuring that
ends of split ring [2531.1] match evenly.
c) Install the impeller [2200] on the impeller
key(s) [6700.4] and against the split ring
[2531.1] (or shaft shoulder, if no split ring
is installed), using the procedure outlined
in interference fit part installation (section
6.9.1.1) above.
8) Install balance drum key [6700.5]
See the ASSEMBLY drawing in the back
of this manual, to determine the method used to
secure the balance drum [6230].
9) Install the balance drum [6230] on key
[6700.5] using procedure outlined in
interference fit part installation (section
6.9.1.1) above, then:
a) install split ring [2531.2] and retainer
[2530.2], or
b) slide hot sleeve [6230] toward coupling
end to clear shaft shoulder, install split ring
[2531.2], reheat sleeve [6230] as
necessary, and move sleeve [6230]
towards free end to retain split ring
[2531.2].
Failure to clamp assembly together
before moving it to the horizontal position will
result in component damage.
10) Securely clamp assembly in vertical assembly
apparatus.
11) With one hoist attached to each end of the
vertical assembly apparatus with soft cables,
tip the internal assembly into a horizontal
position and position it so that the intermediate
cover [1460] rest on wooden blocks. Remove
the lifting gear and vertical assembly
apparatus.
If the axial movement of the shaft
[2100] or the running position of the impeller(s)
[2200] is not within tolerance, the internal
assembly has probably been assembled
incorrectly or with improper parts. The cause must
be located and corrected before the internal
assembly is installed in the case.
12) Determine and record the rotor lateral
movement as described in
Figure 6-8
Rotor
Lateral Movement
below.