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95-03009
PRE-ASSEMBLED SEALS
Pre-assembled (Cartridge) Seals have all of the
seal components mounted to a flange. They are
pre adjusted at factory. Follow the Seal
Manufacturers's (John Crane, A. W. Chesterton,
etc.) recommendations regarding application,
operation and maintenance.
The following procedures apply to this type of
seal:
DISASSEMBLY
1. Remove all flush connections and fittings.
Remove the casing clamp, casing and O-ring
from the housing flange. (Figure 11)
2. Remove the impeller retainer bolt and O-
ring; then loosen the seal setscrews-and pull the
impeller, backplate and seal off the bearing
shaft as a unit. Set the assembly face down
(on
the impeller).
(Figure 11-12)
Note: The clearance shims that position the
impeller within the casing are at the end of the
impeller hub (inside the seal.) Keep shims
together as a set for reassembly.
(Figure 12)
3. Remove the seal unit from the backplate
assembly by removing the cap screws holding
the seal flange to the seal adapter. Pull seal
from seal adapter. Remove seal adapter by
removing socket head cap screws holding
adapter to the back plate. (Figure 12)
PUMP ASSEMBLY
1. Place shims, backplate and impeller on
the shaft assembly. Hand tighten the impeller
retainer bolt on the shaft.
2. Check the space between the back of the
impeller and the backplate with a feeler gage
(.030 nominal) while holding the backplate tight
against the bearing housing flange.
(Any axial
movement of the shaft should not be added to
the .030 nominal clearance.)
If needed, change
this clearance by adding or removing shims.
(Figure12-13) Confirm operating clearances by
clamping the casing to the bearing housing
flange and rotating the shaft/impeller manually
to be sure the impeller does not touch the casing
or backplate. When proper shim pack is
confirmed
remove
the casing, impeller and
backplate leaving the shim pack on the shaft.
3. Insert L-gasket into the backplate. Insert
cartridge adapter into the backplate and tighten
with four socket head cap screws. (Figure 14)
IMPELLER BOLT
ASSEMBLY
O-RING
.030'
Figure 13
Figure 12
Figure 11
Figure 14
BACKPLATE
SHIMS
CARTRIDGE
SEAL
SOCKET
HEAD
CAPSCREW
IMPELLER
CAP SCREW
ADAPTER
CLAMP
CASING
ADAPTER
SOCKET HEAD
CAP SCREW
L-GASKET
CARTRIDGE SEALS
REMOVAL / ASSEMBLY
SET SCREWS
BACKPLATE
Summary of Contents for 200 series
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Page 25: ...24 95 03009 MAINTENANCE SEE PAGE 34 MOTOR MOUNTS ELECTRIC MOTORS ...
Page 26: ...25 95 03009 MAINTENANCE SEE PAGE 34 MOTOR MOUNTS ELECTRIC MOTORS ...
Page 30: ...29 95 03009 AVAILABLE SEALS FOR 200 SERIES PARTS LISTS Figure 38 ...
Page 40: ...39 95 03009 THIS PAGE IS INTENTIONALLY LEFT BLANK INSTALLATION DIMENSIONS Style A 7 12 96 ...