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equipment.
22.1.1. Pull Out Element Removal
This pump has a pull-out element, which consists of the pump shaft (12), mechanical seal assembly
(21), casing cover (9), impeller (7), and bearing housing assembly, as well as their attached
parts. This pull-out element makes it unnecessary to remove the driver, motor bracket (6), or casing
(1) to service the bearing housing assembly, mechanical seal (21), impeller (7), wear rings
(8.1/8.2–3.1/3.2), stuffing box bushing (10), and gaskets.
a) Remove all mechanical seal piping, instrumentation and electrical device that can disturbs
disassembly. Pump casing has to be drained.
DANGER
When pump is handling "hot" liquid extreme care must be taken to ensure safety of
operators that drain the pump . Hot pumps must be allowed to cool before
draining.
DANGER
When pump is handling "caustic" liquid extreme care must be taken to ensure
safety of operators when removing auxiliary piping or when draining pump.
Protective devices of suitable protective materials must be worn when draining the
pump.
b) Remove coupling guard (33) from bearing frame (32) by removing bolts and washers.
Remove bolts and nuts holding the guard together, then remove the guard.
c) Disassemble and remove coupling spacer in accordance with the manufacturer's instructions supplied
with the present manual.
d) In case of Oil Lubrication drain the bearing frame of oil removing draining plug (34) at the bottom of
the bearing housing.
DANGER
Use caution when draining hot oil from bearing housing to prevent burns/injury to
personnel
e) Remove the hex bolts clamping the casing cover (9) to the casing (1).
f) Use the jacking bolts provided on the casing cover (9) flange to lift the cover from the casing (1) and
raise the cover above the lower flange of the support head (6).
g) Attach the pullout element lifting arm to the pullout element, then lift the element out of the casing
(1). (See figure 6.2).
Pag. 34/49
Doc. ISM0076_MANUALE_CN SEAL-MV_ENG_REV04.DOCX
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