NOTICE:
Protect machined surfaces while cleaning the parts. Failure to do so may result in equip-
ment damage.
6.5.1 Replacement guidelines
Casing check and replacement
WARNING:
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and en-
sure gasket sealing surfaces are not damaged and repair or replace as necessary.
Inspect the casing for cracks and excessive wear or pitting. Thoroughly clean gasket surfaces and
alignment fits in order to remove rust and debris.
Repair or replace the casing if you notice any of these conditions:
Casing areas to inspect
The arrows point to the areas to inspect for wear on the casing:
Figure 41: 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 1.6 mm | 1/16 in., or
•
When worn evenly more than 0.8 mm | 1/32 in.
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.
6.5 Pre-assembly inspections
74
Model IC, ICI, ICH, ICIH Installation, Operation, and Maintenance Manual
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