39
RotoClone
®
W
© 2015 American Air Filter Company, Inc. Any use of the text or images
this document contains, without permission of American Air Filter
Company, Inc., is prohibited. RotoClone, AAF, REDClean, REDFiltration,
and Reliable Efficient Durable are registered trademarks of American Air
Filter Company, Inc. d/b/a AAF International.
sure to tighten the set screws to the proper torque as recommended by the
bearing supplier (or contact AAF for recommendation). The impeller is reattached
to the shaft, but the taper lock hub screws are not tightened yet. All old gasket
material should be removed from the scroll and water cone. A new water cone
gasket should be cemented to the water cone. The water cone is then reattached
to the scroll using the match marks to orient it in the same position as the original.
The impeller is then checked for proper distance from the water cone edge using
Figure 7 and the Table 7.
The taper lock hub screws are tightened after confirming the proper position
of the impeller. Note that the impeller may shift as the hub is tightened onto the
shaft; the impeller position should be checked while tightening the hub and
repositioned as necessary. A wooden block and hammer can be used to “tap” the
impeller back if required. Recheck the impeller position and rotate the impeller to
insure that it turns freely, once the impeller is locked onto the shaft. The inlet
pieces and piping can then be reattached. A waterproof caulking/gasket is used
between the inlet flanges; remove any old material before reinstalling, and be sure
to encircle bolt holes with caulk, or leaks may result.
Figure 7. Field Replacement of RotoClone W Impeller
