What are the first 5 signs of vacuum pump failure?
Even the most well-constructed vacuum pump can fail after extended use. In industrial applications, for instance, the downtime resulting
from pump failures can be prohibitively expensive — especially if it forces production to grind to a halt.
As vacuum pumps are found in every day technology, consumers are also impacted by pump failure. The rattling sound of a failing car engine
pump, for example, illustrates that your car engine needs repairs.
Knowing the signs of vacuum pump failure is crucial in maintaining a functioning system and avoiding dangerous or expensive issues resulting
from failure — like being stranded after having car engine issues or missing shipments when your production line halts. Here, we unpack five
of the most common signs of vacuum pump malfunction. But first, let’s explore why maintenance schedules are key in avoiding vacuum pump
failure.
MAINTENANCE
SCHEDULES AND CLUES FROM A FAILING VACUUM PUMP
When a vacuum pump fails, it rarely occurs without warning.
But it can be challenging to know what an optimally functioning vacuum pump looks like. This is because vacuums are almost always
incorporated into larger systems while being used for varied-use cases. As a small part of a larger system, it’s also difficult to assess
when pump maintenance is needed until production is affected.
Despite this, proper maintenance is required to identify when vacuum pumps are near to failing. Without maintenance, you risk being caught
off guard by unexpected downtime and the cost of repairing or replacing a pump. Creating a maintenance plan helps you avoid pump failure and
ensures you fix system leaks before any issues or
telltale signs arise. These plans should be guided by the owner’s manual, the project environment and the material being pumped.
Your maintenance plan should allow for the servicing, repair and replacement of pumps. For smaller projects, this may involve sending pumps
back to the manufacturer. With this in mind, here are the common signs of a failing vacuum pump:
1. INCREASED NOISE
When your vacuum pump exhibits loud or atypical noise, then it may be close to failure. Throughout their use, ageing and accumulated wear
cause a specific part in the pump to fail. Increased noise is often a sign that a pump requires maintenance and cleaning. While parts like
diaphragms, valve plates and seals are easily replaced, increased bearing, motor or air noises may indicate that more extensive repairs are
needed.
2. EXTENDED PROCESSING TIMES
If dirt or other contaminants enters the vacuum pump chamber or valves, overall pump performance can be impacted. When pumps need more time
to accomplish operations, they may be in danger of failing.
At this point, thoroughly cleaning your pump and ensuring that no contaminants reach other parts is a necessity. Without this step, these
contaminants will continue affecting pumps, leading to more maintenance or repairs. Filters are also valuable in preventing contaminants
from entering your system.
3. OVERHEATING AND CONSTANT RESTARTS
It can be difficult to diagnose vacuum pump failures resulting from heat buildup. Factors may include having a bad motor, incompatible pump
applications or poor ventilation. Constant overheating may indicate a malfunction.
When troubleshooting for an overheating pump, first assess the pump ventilation openings. If these openings are blocked or are too close to
another object, fixing this issue may be as easy as resituating the pump.
4. YOUR VACUUM PUMP WON'T TURN ON
If a pump won't turn on, it may be a fuse issue. First, check if the pump’s fuses are blown. If your pump works and there are no issues
after you’ve replaced the fuses, then you’ve fixed the problem.
But if blown fuses are a continuous problem, then you may have a power issue — or you’re using a voltage that is too high for your pump.
5. SLOW STARTS OR STANDSTILLS
Blockages or flow restrictions at the inlet or outlet cause vacuum pumps to start slowly. If there are no blockages, your pump might have a
damaged or weak motor or capacitor.
This could be the result of an improper application, especially if there's an inlet vacuum or added pressure at the outlet, which will need
to be addressed. When a vacuum pump fails here, fuses can overheat and burn out, eventually leading to damage of the motor or start
capacitor.
PREVENTING VACUUM FAILURES
Establishing a regular maintenance schedule is key to preventing vacuum failures before they occur. Another step to preventing failure is to
look out for the five signs shared above.
But preventing vacuum failure is only one step in maintaining a safe and reliable vacuum system. We’ve written a free ebook to help
organisations troubleshoot vacuum system issues and optimise vacuum system performance. In it, we share insights on:
The causes of slow evacuation time
How to increase ultimate pressure of the vacuum pump
How to deal with troublesome vacuum pumps and gauges
How to deal with ambient conditions such as temperature, magnetic fields and ionizing radiation
The Ash Air range of rotary claw vacuum pumps is the best alternative to rotary vane pumps. A vacuum claw pump is virtually zero maintenance and compared to rotary vane pumps can work at vacuum levels of 400 to 1000 mbar without overheating. Rotary claw vacuum pumps are the best choice for CNC guided wood routers.
The Ash Air range of humble liquid ring pumps is still the most reliable form of large volume vacuum generation available today. These liquid ring pumps are simple to use and very reliable, and the best option when sucked air contains a large amount of saturated gas.
Dry and oil-sealed vane vacuum pumps are robust, affordable and easy in maintenance. You can use DVP vane pumps for wide range of application, for skin packaging, holding, lifting, thermoforming.
Who we are and how Ash Air can help your business!
Ash Air has been around in New Zealand since 1979, and we’ve grown into a nationwide company with international support and a
reputation for quality and reliability.We look after all things compressed air for your business!
Reciprocating, Screw, air compressors
Vacuum pumps
Nitrogen
An extensive line of air treatment components
Ash Air's range of Chicago Pneumatic, Alup, Pneumatech, and Quincy compressors are used extensively around the world in industries
ranging from oil and gas to food, automotive and farming, and we bring you these world class compressors here in the land of the long white
cloud.Our technicians are compressed air equipment experts and are dedicated to addressing customer needs. Supported by a 13 locations
nationwide, Ash Air offers one of the widest selections of compressed air equipment and parts available today in New Zealand.
Reliability and Efficiency
With Ash Air compressors, you can count on reliability and high performance for even the most demanding applications. We focus our
efforts on the following:
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