What action should be taken if a one month old pump is not performing to its design specification?

Question

It is a question i have on a plumbing course im doing

Answer 1

Send it back and get a new one.  It should be under warranty.

Answer 2

You need to validate the pump thru a test. Pressure and Flow Volumn

Request the test criteria: Fluid Type, inlet pipe size, outlet pipe size and temperature to operate at and time duration.

Verify that nothing in the set up is incorrect.

There are several causes to not perform adequately such as: Inlet pipe is too small or has cavitation affects occurring. Fluid density is different. Outlet pipe is too large.

Do a static pressure test with air on the inlet as well on the outlet to verify no leaks. Like that done on a car cylinder.

Answer 3

if its a vertical pump, check impeller lift and pipe stress on flanges at pump case. if horizontal, motor and pump alignment parameters should be met, also check for soft feet at tie down bolts. check for pipe stress at flanges on pump case.