Flowserve SVCN 7, Установка, эксплуатация и обслуживание

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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
b. Set up a dial indicator to run on the inside diameter of the wear ring and rotate the table
(or chuck). Total runout must not exceed 0.0015 in (0.04 mm).
6. Install the wear ring retainers in the same manner they were installed previously.
7. Inspect the wear ring wear surface for damage.
4.4.7 REPLACING IMPELLER WEAR RINGS
NOTE
Whenever an impeller has new wear rings installed, it must
be dynamically balanced before reassembly.
To replace an impeller wear ring (200A/B) proceed as follows:
CAUTION
Ensure that the parent part is not damaged during removal of
the wear ring.
1. Remove the wear ring retainers.
2. Remove the old wear ring by placing the impeller in a lathe and turning off the wear ring. If
this is not feasible, grind through the wear ring in two places and break the ring off of the
impeller.
CAUTION
Do not bind or distort the wear ring.
4. Heat the new wear ring to 225°F (107°C) using a torch or induction heater, then slip the wear
ring into place on the impeller. Ensure that the set screw holes in the wear ring line up with
the set screw holes in the impeller.
5. Verify trueness of wear-ring-to-impeller fit as outlined below, or by an equivalent technique.
a. Set impeller with wear ring face up on table of vertical lathe and parallel with face of
table.
b. Align centerline of impeller (that is, centerline of impeller bore) with centerline of table
using bore as true surface for dial indicator. Alignment should be within 0.001 in (0.03
mm).
c. Clamp impeller in centered and parallel position.
d. Set up dial indicator to run outside diameter of wear ring and rotate table. Total runout
must not exceed 0.0015 in (0.04 mm).
6. Install the wear ring retainers in the same manner they were installed previously.
7. Inspect the wear ring wear surface for damage.
DO2604-13 - 4-8 -