PUMP AND COMPRESSOR QUESTION AND ANSWER

1. Name parts of the centrifugal pump?

Rotary parts; Shaft, Impeller, Coupling, Mechanical seal, Oil rings

Stationary parts; Casing, Stuffing box, Bearing housing

2.How do you check impeller back clearance?

By the use of feeler gauge and with dial indicator as possible.

3. How do you check impeller front clearance?

By the use of feeler gauge and with dial indicator as possible.

4. How do you adjust impeller front clearance?

Add or remove casing gasket thickness

5. Where is fixed bearing located?

a. In back pullout pumps, fans – inboard

b. Double suction single discharge pump – outboard

c. Mixers (agitators) – top bearing

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