RS – Multi-Stage, I-280
Centrifugal Pump 280 – 16.03.EN
31
C. DISASSEMBLY OF PUMP WITH OPTIONAL
MECHANICAL SEALS. The instructions that follow are
an aid for properly trained personnel to service 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 service work.
Read this entire section before disassembling the pump.
NOTE
Parts marked with * are options that vary by
pumping unit and bearing frame size.
ATEX and CE require bearing isolators and
metal splash guards. Other customers may use
oils seals and plastic splash guards. These
items fit in the same positions.
Refer to Section II for Safety precautions before
disassembling pump.
After completion of dismantling, all parts should be
thoroughly cleaned or replaced by new ones if
necessary. All gaskets and sealing faces should be
perfectly clean. When cutting new gaskets, make sure
they are exactly the same thickness as the old ones.
CAUTION
Use a hoist with adequate lifting capacity; refer
to Section VII, Paragraph B.
When pump is handling hazardous fluid,
extreme care must be taken to ensure safety of
personnel when attempting to drain pump and
piping before disconnecting the pumping unit.
Suitable protection devices should be used
and/or protective clothing should be worn.
NOTE
Pump should be dismantled from the suction
end. Mark or number each component while
dismantling according to sequence.
1. Complete Section XI, Paragraph A before
continuing with disassembly.
2. With pump in a horizontal position clamp down
discharge case (1) foot to steady pump during
disassembly.
3. Support interstage casings (111) before
dismantling to prevent from being dropped while
suction case (9) is removed.
4. Remove male connectors (410 and 561*)
bodies from seal glands (17A and 17X*).
NOTE
Refer to mechanical seal vendor instructions for
proper mechanical seal removal procedure.
5. For cartridge mechanical seals (90*), loosen
setscrews holding the cartridge seal sleeve to
shaft (6) and remove cartridge seal.
6. For Type 1 mechanical seals (90*), remove nuts
(615) and washers (646) from studs (630) on
seal glands (17A and 17X). Slide back seal
gland from suction casing (9) and discharge
casing (1) to release mechanical seals (90 and
91) tension.
7. Starting on suction end (Inboard) remove bolts
(601), washers (850), O-rings (89W) from
bearing cap (37). Remove bearing cap (37) from
inboard bearing frame (99). Bearing cap bearing
isolator (168*) will be removed with bearing cap.
Remove bearing cap bearing isolator and
discard.
8. Remove bearing jam nuts (22) from shaft (6).
NOTE
Do not remove both bearing frames at the
same time. Pump should be dismantled from
the suction end.
9. Remove bearing frame bolts (600). Remove
inboard bearing frame (99) from suction case
(9). Ball bearing (16), spacer sleeve (14G), and
bearing frame bearing isolator (169) will come
off together with the inboard bearing frame.
Discard ball bearing and bearing frame bearing
isolator.
10. Remove slinger (40) from sleeve (14A).
Remove seal gland (17A) and sleeve from shaft
(6).
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