Summit Pump 2196 ANSI Model

Signs Your Centrifugal Pump Needs Repair

Centrifugal pumps are an essential component of many industrial applications. Oftentimes, your production efficiency is dependent on how well your pumps are functioning. 

If you notice that your centrifugal pump needs repairs, or there are signs that it is not working as it should, then it is in your best interest to have it fixed immediately. A pump that breaks down completely can halt production, lead to unplanned downtime, and, of course, cost you a lot of money!

There are five common signs that your centrifugal pump needs attention.

  1. Pump leakage
  2. Unusual noises or vibrations
  3. Reduced pump flow
  4. Overheating
  5. Slow re-priming

C&B Equipment can help you fix these issues, and we can also perform regular maintenance to ensure that they don’t happen again!

1. Pump Leakage

A leaking pump is an immediate red flag. Excessive pressure, temperature, or corrosion can loosen the seals and joints, allowing fluid to escape. Fixing a leaking pump can be as simple as tightening the fasteners around the joint. However, in other cases, the mechanical seal or gasket may need replacing.

2. Unusual Noises or Vibrations

As with most equipment, unusual sounds or a continuous noise are signs of a problem. Common causes include bearing failure or a foreign object inside the pump. Rattling noises, accompanied by vibration, are a sign of cavitation. Cavitation can cause significant damage to the pump, so you’ll need to act quickly to address the problem.

3. Reduced Pump Flow

Have you noticed a significant reduction in pump flow? Is it taking your pump longer to do its job?

There are several causes of flow reduction. Some of the most common include the following.

  • Open bypass valve
  • Damaged impeller, wear plate, or wear ring
  • Leaking gasket
  • Clogged or collapsed suction line
  • Clogged pump inlet, impeller, or discharge line

If you notice any of these issues, then you should contact C&B Equipment, so we can get your pump back in working order.

4. Overheating

Clogged pumps often result in overheating, as well as reduced flow. If a centrifugal pump is overheating, this usually means the flow of the pump is being restricted.

Common trouble spots include the following.

  • Clogged suction strainer
  • Clogged recirculation port
  • Obstructed air release line or valve
  • Obstructed discharge line

Recommended Read Types of Centrifugal Pumps: Which One is Right for You?

5. Slow Re-Priming

Improper clearance is the most common cause of slower re-prime, but there are other possibilities as well. A leaking seal, a loose gasket, a worn volute, or a clogged recirculation port can also slow down the re-priming process. If the clearance checks out, then you should have a maximum vacuum check done to determine the location of the problem.

What is pump priming?


Priming is something that needs to be done if you want your pump to function properly. In the case of centrifugal pumps, this means filling it up with water. Different pumps need to be primed in different ways. Consult your owner’s manual or contact C&B Equipment to determine the proper way to prime your pump. Keep in mind that some pumps are self-priming.


Don’t Settle for Temporary “Fixes”

Despite the popular saying, duct tape does NOT fix everything. If your centrifugal pump is kept running with patchwork repairs and temporary fixes, you’ll quite literally pay for it later. While you may feel pressured to keep production running, these temporary fixes won’t prevent the imminent failure of the pump. 

You’re far better off scheduling a repair while you still have options. Otherwise, production can come to a screeching halt later. C&B Equipment offers pump installation and repair, as well as regular maintenance to increase your plant uptime.

Take a look at our pump repair and maintenance services!


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