RS – Multi-Stage, I-280
Centrifugal Pump 280 – 16.03.EN
43
NOTE
Rotate the shaft so the mark (arrow) that was
put on during rotor TIR process is pointing
down. Tap with a soft mallet along the suction,
interstage and discharge casings. DO NOT
rotate shaft until both end jam nuts have been
torqued.
34. Torque bearing jam nut (22) to 20 ft/lbs on
suction end. Rotate pump shaft to insure shaft
spins freely.
35. To install mechanical seals, remove bearing jam
nut (22) on suction end of pump. Remove
bearing frame (99); inboard ball bearing (16),
bearing isolator (169), and spacer sleeve (78)
can stay in bearing frame.
NOTE
DO NOT rotate shaft during mechanical seal
installation. Refer to mechanical seal vendor
instructions for complete seal installation
procedure.
36. If applicable, install cartridge mechanical seal
(90*) on suction casing (9) with hex nuts (615)
on studs (630). Remove seal clip after pump
assembly is complete.
37. If applicable, for Type 1 mechanical seals
determine placement of seal collar (68*) on
sleeve (14A), refer to Table 7. For Installation of
mechanical seal (90*) rotating element, refer to
the following procedure:
a. Scribe a mark on the sleeve (14A) flush with
stuffing box face. Remove sleeve making
sure sleeve key (32X) stays in shaft (6)
keyway. Refer to Table 7, Standard
Mechanical Seal Settings, for specified
distance and make a second scribe mark.
b. Install seal collar (68*) face to the second
scribe mark. Secure seal collar to shaft
sleeve (14A) with setscrews (665) using
Loctite to secure seal collar.
38. Lubricate inside of sleeve (14A).
39. Align keyway to mark scribed in step 25.
40. Slide sleeve (14A) over sleeve O-ring (89X).
41. If stationary element of mechanical seal is
replaced, clean, dry, and lubricate inboard gland
(17A*).
42. Lubricate both inboard gland (17A*), stationary
element, and O-ring of mechanical seal (90*)
with suitable lubricant. Insert stationary element
of mechanical seal (90*) into inboard gland.
Lubricate and install gland O-ring (89H*) on
inboard gland (17A).
43. Lubricate and Install rotating elements (rubber
bellow) of mechanical seal (90*) onto sleeve
(14A).
44. Slide inboard gland (17A*) with stationary
elements of mechanical seal (90*) over end of
shaft (6) onto suction casing (9) with studs (630)
and nuts (615) finger tight. As applicable,
ensure tap flush lines in inboard gland (17A*) is
positioned so flush lines can be connected.
45. If removed install slinger (40) on sleeve (14A).
CAUTION
Handle inboard bearing isolator (169) with care.
Mishandling could damage faces of inboard
bearing isolator.
46. Install bearing frame bearing isolator (169) in
bearing frame (99).
47. Secure bearing frame (99) to suction casing (9)
by tightening bolts (600).
CAUTION
While installing radial ball bearings, do NOT
unnecessarily hit bearings. If damage to ball
bearings occurs, replace damaged ball
bearings with new ball bearings.
After 20,000 Hours of service, replace the
ball bearings.
48. Install new radial ball bearing (16) on shaft (6).
NOTE
Confirm the shaft, so the mark (arrow) that was
put on during rotor TIR process is still pointing
down. DO NOT rotate shaft until both end jam
nuts have been torqued.
49. Install one jam nut (22) and torque to 20 ft/lbs.
Use removable thread locker and install second
jam nut and torque to 30 ft/lbs.
50. Install new bearing cap bearing isolator (168) in
bearing cap (37). Confirm that the breather vent
(405), oil view sight (143), and plugs (426) are
still installed in the bearing cap. Lubricate and
install O-ring (89F) on bearing frame. Secure
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