8
3. Pry loose the ceramic seal in impeller, apply screwdriver
between seat and cavity in impeller (Figure 6). Clean
cavity from which seat was removed.
4. Lubricate the rubber ring in the impeller with a soap
solution. Press seat into impeller cavity (Figure 7). If a
tool or pipe is necessary to press ceramic seat correctly,
use a cardboard disc or washer to protect the highly
polished ceramic surface of the new seal.
Pump Reassembly:
1. Loosen shaft extension (Key No. 2), so it may be moved
along the shaft with ease. Replace adapter on motor and
tighten capscrews (Key No. 5).
2. Make certain seal faces are clean. Hold the motor shaft
extension stationary and tighten impeller on to shaft.
NOTICE:
3-Phase models use an impeller screw. For
these models, install the impeller washer and lock screw
(left-hand thread—turn counterclockwise) before
proceeding to Step 3.
3. Leaving volute gasket off, place volute on adapter and
tighten nuts (Key No. 11A).
4. Push shaft extension and impeller toward volute until
impeller touches volute. Tighten set screws (Key No. 3)
in place. Remove volute and install gasket (Key No. 8).
Place volute on adapter and tighten nuts (Key No. 11A).
By this procedure, the proper clearance between
impeller face and volute has been established.
Figure 6
Figure 7
Summary of Contents for Sta-Rite CF6 Series
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