Goulds Pumps IC - IOM - Manual (Page 65)

Casing areas to inspect
The arrows point to the areas to inspect for wear on the casing:
Figure 9: Areas to inspect on the casing
Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller parts When to replace
Impeller vanes • When grooved deeper than 1/16 in. (1.6 mm),
or
• When worn evenly more than 1/32 in. (0.8 mm)
Vane edges When you see cracks, pitting, or corrosion damage
Impeller clearances and reconditioning
When you recondition the impeller, consider this information:
• For pumps installed in potentially explosive atmospheres, you must replace worn parts when the wear
limits have been reached.
• For volute casings (102V) with a wear ring (502.11) and casing covers (161) with a wear ring (502.31),
you can restore the correct clearance in one of two ways:
• Replace the impeller and the wear ring.
• Contact your ITT representative in order to acquire a customized wear ring (bored to fit) in order
to avoid replacement of the impeller.
• When the volute casing (102V) or casing cover (161) without a wear ring must be repaired, you can
install a wear ring in order to renew pump performance. The volute casing and/or the casing cover
must be re-machined. Contact your ITT representative for assistance.
Maintenance
Model IC, ICI, ICH, ICIH Installation, Operation, and Maintenance Manual 63