RS – Multi-Stage, I-280
Centrifugal Pump 280 – 16.03.EN
40
connector (410, 411 and 413) bodies, as
applicable.
47. Install plugs (421, 423, 424, 426, and 429).
48. Rotate shaft (6) by hand to ensure shaft rotates
freely. Tighten gland nuts (615) on gland (17A).
CAUTION
Use a hoist with adequate lifting capacity; refer
to Section VII, Paragraph B.
49. Return assembly to installation site. Install pump
on base.
50. Check for soft foot, if needed correct by
shimming or loosen and torque the tie bolts.
Soft foot will cause alignment problems and
may cause failure if not corrected. Secure pump
with capscrews.
51. Rotate shaft (6) by hand to insure shaft rotates
freely and no rubbing noises are present.
52. Install coupling key (46). Install coupling half on
pump shaft (6).
53. Align coupling according to Section VII,
Paragraph F.
54. Reconnect piping, gauge lines, and auxiliary
connections, as necessary. Check for smooth
shaft rotation. Check alignment again. If
different than before, you have pipe strain and
must fix the pipe to eliminate the strain.
55. Reinstall coupling guard.
CAUTION
Pump bearing frames should be filled with
oil before starting the pumping unit. Operation
of the unit without proper lubrication can result
in overheating of the ball bearings, ball bearing
failures, pump seizures and actual breakup of
the equipment, exposing operating personnel to
injury.
56. Fill bearing frame with oil (refer to Section X,
Paragraph A and Table 12.
57. Confirm water is turned on to external flush lines
for pumps equipped with water cooling for either
the oiler or the mechanical seal.
58. Remove all tags from valves and switches.
59. Start pumping unit in accordance with Section
VIII, Paragraph C.
F. REASSEMBLY OF PUMP WITH OPTIONAL
MECHANICAL SEALS. Read this entire section before
reassembling the pump. The instructions that follow are
an aid for properly trained personnel to assemble your
Carver Pump. Refer to Figures 14 and 15 to locate the
pump parts by item number and parts list. If a specific
sectional assembly drawing exists for a particular job
then that drawing should be referred to for assembly.
Refer to Table 14 for recommended torque values.
Assemble the pump in accordance with accepted rules
of engineering practice. Coat individual components with
a suitable lubricant before assembling. Assembly of unit
should be performed on a clean, flat surface. During
reassembly, install parts as applicable. Assembly begins
at the discharge (outboard end) of the pump.
CAUTION
During reassembly, install new O-rings, ball
bearings, oil seals/bearing isolators,
mechanical seals and gaskets if disturbed from
position. O-rings, ball bearings, oil
seals/bearing isolators, mechanical seals and
gaskets may have been damaged during
disassembly.
NOTE
All parts should be thoroughly cleaned or
replaced with new ones if necessary. All
sealing faces should be perfectly clean, but do
not scratch or alter surface finish on seal faces.
Parts marked with * are options that vary by
pumping unit and bearing frame size.
1. Confirm that the rotor TIR was completed per
Section XI, Paragraph D, step 10 before
proceeding with assembly. Secure discharge
casing (1) to work area.
2. Lubricate and install sleeve O-ring (89X) into
groove on discharge end of shaft (6).
3. Install sleeve key (32X) into keyway in shaft (6).
Lubricate inside of sleeve (14X) and slide onto
shaft, lining up keyway of sleeve with sleeve
key.
4. Install diffuser bushing O-ring (89A) on last
stage diffuser bushing (63X). Install last stage
diffuser (5X) with last stage diffuser bushing into
discharge casing (1). Confirm gland studs (630)
are installed in discharge casing.
5. Insert snap ring (176) in snap ring groove on
shaft (6). Insert shaft assembly through
discharge casing (1).
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