Downtime: It Isn’t Always BAD

When you say Downtime in an industrial or manufacturing setting, it may easily carry a negative connotation. This means that the output of production is not happening and input to production has halted as well. If this is not planned, it is absolutely a worst-case scenario. In our personal lives, though, downtime generally doesn’t have a negative meaning behind it. That’s the time to disconnect and recharge to maximize your output after you return to production and that is exactly what I had the luxury to do recently. This is also a message I received from a person I look up to and trust in their experiences. Vacation time can be looked at similar to a preventative and planned downtime of equipment. Without it we just wear down and eventually productivity grinds to a halt. While hanging out at a lake with my daughters this past week, I helped them hone their fishing skills. They each baited their own hooks with worms and chose their spots. We completely slayed some bluegills, and released every single one of them.

The calm of a storm rolling in when you have nothing to do is serene.

Prescribed maintenance, preventative maintenance, vacations all help to build back into the production of whatever good or service the company provides. The entire production of a facility all starts with the utilities, energy, water, compressed air, steam, other compressed gases, and the personnel. If your power input isn’t maintained, monitoring connections and disconnects, you can find yourself with a lack of service, resulting in dangerous situations. City water is often required for processes or for the facility to function properly, even an office building needs it for plumbing, fire suppression, and drinking. Steam, compressed gases and compressed air may all be required by the processes.

Servicing the compressed air where it starts is one of the most critical steps in operating a compressed air system. Making sure that your compressor has the minimum downtime, all starts with the preventative and prescriptive maintenance. One of the first tasks should always be changing and monitoring the intake air filter. Like Russ Bowman said a while back in his blog, take a deep breath, if you sneeze or smell something that is from the intake air your nose just took in from the surrounding area. That’s even after your nose hair has already partially filtered air intake. Your compressor is no different. If you let it suck up debris, dust, and pollen, then it is eventually going to have a failure. Instead of sneezing, it may burn up a vane, valve, scroll or screw. That is going to be a considerably higher cost and longer downtime than just performing the manufacturer’s listed items to maintain optimal performance.

The compressor shown above according to the caretaker receives a regular change on the airfilter every month. This is just before the cleaning and changeover. Not only do they change the filter, they make sure to clean the entire housing inside and out. That’s one of the ways this compressor has lasted with minimal downtime over the past 20 years.

If you want to learn more about other key maintenance items in your compressed air system, please contact an Application Engineer today.

Brian Farno, MBA – CCASS Application Engineer

BrianFarno@EXAIR.com
@EXAIR_BF

Low Pressure Alarms Got You Down?

When the operating air pressure within a manufacturing facility drops it is easily noticed.  This is because the equipment that is depending on that air pressure to stay above a set point will generally stop working and halt in an alarm state safely.  (This is not always the case and in fact I have personally seen machines crash due to low compressed air pressure.)  This creates down time, safety hazards, equipment hazards and is all around not good for production.  This is why low pressure alarms are taken very seriously in most facilities.(See the video below.)

 

Sometimes the reason behind low air pressure in areas is easy to find.  If the alarm happens every time a machine reaches a point in the production cycle where air is used to blow parts off then the point of use blow off can be looked at to see how its efficiency can be maximized.   Other times it is not so simple.  There may not be a pattern to when the low pressure alarm goes off and therefore cannot be easily traced.   This is where the 6 Steps To Compressed Air Optimization comes in to play.  The best way to narrow down what area the fault is generating in is to get some base line measurements on the total air usage for the system by using a product like the Digital Flowmeter with USB Data logger.

EXAIR's Digital Flowmeter w/ USB Data Logger
EXAIR’s Digital Flowmeter w/ USB Data Logger

Once the baseline is known for the complete system, measuring the main branch lines for the systems will then need to be performed. This could be on the main header where it branches off to individual areas of the plant, or if it is a small shop any line that is off the main header.  By recording the usage over a period of time it will highlight use trends including low use/high use times and random spikes in demand you may not be aware of. The next step would be to then look further into the high use and random spikes. If a flow meter is placed on individual legs of the air system, it will be easier to determine what area of the plant is causing high use, or knowing what processes occur during the time period shown in the data.

By having flow meters on individual branches the cause of the high demand on the compressed air system will become very clearer, whether it be an open pipe blow off, stuck valve on a drain, or just an operator not paying attention, the cause will be able to be determined and eliminated.

EXAIR offers a full range of Digital Flowmeters with USB data loggers and we offer custom calibrations as well as sizes to fit virtually any compressed air piping you may have within your facility.   Feel free to contact an Application Engineer to discuss the possibilities.

Brian Farno
Application Engineer Manager
BrianFarno@EXAIR.com
@EXAIR_BF