20
c. Rotate shaft 360 degrees. It should be free.
16. Set frame and adapter upright. Clamp to bench for safety as assembly continues.
17. Install inboard bearing labyrinth seal in adapter frame. Make sure that the seal’s drain slots face down. Follow Mainte-
nance instructions in Appendix 5.
18. Put anti-seize compound on the shaft and, if equipped, install shaft sleeve onto shaft.
19. Align anti-rotation pin with notch in sleeve.
• For mechanical seal pumps, read manufacturer’s instructions for assembly. (See STUFFING BOX on page 11.)
20. Install stuffing box cover onto adapter with studs and nuts.
21. Install impeller with new O-ring.
22. Using an impeller wrench or strap wrench on the coupling end of the shaft, tighten by rotating clockwise. Make sure
coupling is tight to the shaft.
23. For packed pumps, install the appropriate packing in the stuffing box cover according to fluid being pumped.
a. First, insert two packing rings into bottom of box.
b. Next, insert the lantern ring. Make sure to stagger packing joints and lantern ring joint by 90 and be sure lantern
ring lines up with flushing connection. Install gland halves.
c. Hand-tighten nuts. You must make final adjustments after the pump has begun operation.
24. For mechanical seal pumps, continue by following manufacturer’s instructions noted in Step 19.
Install casing gasket onto stuffing box cover. At this point, the power end is ready for reinstallation into the casing or for
storage for future use.
25. If returning to service, slide assembly into casing.
26. Install casing bolts into frame to pull assembly into casing.
27. Rotate the shaft to ensure that no rubbing exists.
28. Adjust impeller clearance according to the instructions beginning on page 13.
29. Align drive coupling according to the instructions beginning on page 7, in addition to coupling manufacturer
instructions.
30. If the motor was replaced, check rotation prior to reconnecting coupling halves. (See rotation instructions on page 15).
31. Reinstall coupling guard.
NOTE: These steps do not apply to the 6" STR Model.
Check that motor rotation agrees with pump rotation.
CAUTION
Содержание ANSI LTR
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