Flowserve S-series PolyChem - Manual (Page 37)

USER INSTRUCTIONS POLYCHEM S-SERIES ENGLISH 71569207 11-08
Page 37 of 52
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Figure 6-11
ISO Group A and the ANSI pump models
when equipped with duplex angular contact
bearings use a bearing retainer [2530.1] instead of
a snap ring. Remove the carrier from the bearing.
o) The bearing locknut [3712] and lock washer
[6541.1] may now be removed from the shaft
[2100]. Discard the lock washer.
p) An arbor or hydraulic press may be used to
remove the bearings [3011 and 3013] from the
shaft. It is extremely important to apply even
pressure to the inner bearing race only. Never
apply pressure to the outer race as this exerts
excess load on the balls and causes damage.
Applying pressure to the outer
race could permanently damage the bearings.
q) The ISO Group A and the ANSI pump models
has an optional oil slinger [2541] located between
the bearings. If present, inspect it for damage or
looseness. Remove if it needs to be replaced.
r) On ISO Group B and C pumps and ANSI Group 2
pumps, the bearing housing [3200] must be
separated from the bearing housing adapter [1340].
The adapter O-ring [4610.2] should be discarded.
This is accomplished by removing the cap screws
[6570.5], which thread into the bearing housing.
s) If lip seals [4310.1] and [4310.2] are used, they
should be removed from the bearing carrier and
adapter and discarded.
t) If the bearing isolators are removed from either
the bearing carrier or adapter they must not be
reused, discard appropriately.
u) If magnetic seals are used, maintain the seals as
specified by the manufacturer.
v) Mark 3A design. Remove the Trico oiler/sight
gauge [3855] and oil level tag (Figure 6-12) from
the bearing housing.
ANSI 3A design: Remove the sight gauge [3856]
and oil level tag (Figure 6-12) from the bearing
housing.
Save these parts for reuse.
Figure 6-12
6.9 Examination of parts
6.9.1 Cleaning/inspection
All parts should be thoroughly cleaned and inspected.
New bearings, O-rings, gaskets, and lip seals should
be used. Any parts that show wear or corrosion
should be replaced with new genuine Flowserve parts.
It is important that only non-flammable,
non-contaminated cleaning fluids are used. These
fluids must comply with plant safety and environmental
guidelines.
6.9.2 Critical measurements and tolerances
To maximize reliability of pumps, it is important that
certain parameters and dimensions are measured
and maintained within specified tolerances. It is
important that all parts be checked. Any parts that do
not conform to the specifications should be replaced
with new Flowserve parts.
6.9.3 Parameters that should be checked by users
Flowserve recommends that the user check the
measurements and tolerances in Figure 6-13
whenever pump maintenance is performed. Each of
these measurements is described in more detail on
the following pages.
6.9.4 Additional parameters checked by
Flowserve
The parameters listed below are somewhat more
difficult to measure and/or may require specialized
equipment. For this reason, they are not typically
checked by our customers, although they are
monitored by Flowserve during the manufacturing
and/or design process.
6.9.4.1 Shaft and sleeve (if fitted)
Replace the sleeve if grooved, pitted or worn. Prior
to mounting bearings or installing the shaft into the
bearing housing, check the following parameters.