Xylem 8100 Series Centrifugal Pumps AC2515 REV.C User Manual

Page 12

should be roughly equal to the shaft
diameter.

5. Tighten

setscrews.

6. Bring the pump and motor halves of the

coupler into approximate height alignment,
by placing equal amounts of shims under
all the motor feet.

7. Tighten the motor bolts.
8. Use a spacer bar equal in thickness to the

gap specified in Figure 10C. Insert bar, as
shown below, to same depth at 90°
intervals and measure clearance between
bar and hub face with feeler gauges. The
difference in minimum and maximum
measurements must not exceed the
angular installation limits shown in Figure
10H.

FIGURE 10C – USING SPACER BAR

9. Align so that a straight edge rests (as

shown in Figure 10D) on both hubs and
also at 90° intervals without rotating the
coupling. Check with feelers. The
clearance must not exceed the
PARALLEL OFFSET installation limits
specified in Figure 10H.

FIGURE 10D – USING STRAIGHT EDGE

10. If adjustment is needed, loosen the motor

bolts and add (or remove) an equal
amount of shims under each motor foot to
align the height. To correct side

misalignment, strike the side of the motor
foot with a mallet.

11. Tighten the motor bolts and check again.

If a correction is made, re-check alignment
in all directions. Repeat this process until
the desired result is obtained.

12. Pack gap and grooves with coupling

vendor supplied grease before inserting
grid. When grids are furnished in two or
more segments, install them so that all cut
ends extend in the same direction as
shown below. This will ensure correct grid
contact with non-rotating pin in cover
halves.

13. Spread the grid slightly to pass over the

coupling teeth and seat with a soft mallet.

FIGURE 10E – SEATING THE GRID

14. Pack the spaces between and around the

grid with as much as coupling vendor
supplied grease as possible and wipe off
the excess until flush with the top of the
grid.

15. Position seals on hubs to line-up with

grooves in cover. Position gaskets on
flange of lower cover half and assemble
covers so that the match marks are on the
same side.