E-Vac For Lubricant Recovery

Over the last 3 months, I have been in contact with a customer, keeping track of an application that involved the EXAIR E-Vac.  The customer had reached out to us looking for some advice on how to solve a process problem. The operation is a drawing/stamping process, and the when the part exits the machine there is coolant that resides in a deep draw section, approx 0.4″ in diameter by 3.5″deep.  About 1 oz of coolant per part is retained, and over many 1000’s of parts, would add up to lost dollars and messy clean up.

The customer was looking for an automated process that would be able to draw out the coolant and direct the liquid back to the coolant reservoir, all while maintaining the current machine run rate. We settled in on the model 840015 Adjustable E-Vac Generator. The Adjustable E-Vac has a straight through pathway from suction through to discharge, allowing for fast evacuation times.  A simple turn of the unit changes the vacuum and flow levels to best match the needs of the application.  The Adjustable E-Vac coupled to a solenoid valve controlled by the stamping machine resulted in the automatic system the customer was looking for.

Adjustable EVac
Adjustable E-Vac Family

The customer ordered a unit, and based on the preliminary bench testing, it was approved for a production run trial. After some tweaking in the production environment, the unit was performing to spec, and was then subjected to a 100,000+ part run.  The results were a success!  Instead of the parts exiting onto an inclined conveyor, relying on gravity to drain and causing coolant to collect under the conveyor, the coolant could be removed in a controlled manner and sent back to the reservoir.  Less mess and no coolant loss.

EXAIR manufactures (3) types of E-Vacs – Low vacuum generators for porous materials, high vacuum generators for non-porous materials, and the adjustable type for flexible vacuum performance.  They are available in multiple sizes, to best match the vacuum requirements, while using the least amount of compressed air.

To discuss your application and how the EXAIR E-VAC can benefit your process, feel free to contact EXAIR and myself or one of our other Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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When Business is Easy You Save Time, Money & Eliminate Frustrations

Easy to do business with – It’s more than a saying we have around here; it’s something we practice at every opportunity, and every step. This may sound very “customer-service-ey,” and indeed it gets practiced in that arena a LOT, but it extends through every department in this company…from Sales & Marketing, to Order Entry & Accounting, to Engineering & Production, to Shipping & Receiving. Here’s a quick example of how it all came together just the other day:

A residential building products manufacturer has a machine located in a very dusty environment. The space is not climate controlled, and there’s a lot of hot work done there, so, even as fall temperatures cool off from the heat of summer, it still gets fairly hot, which causes the machine’s electronic controls to malfunction, and, eventually, trip off-line due to an overheat condition.

The engineer that was put in charge of solving this problem had just seen a magazine advertisement for our Cabinet Cooler Systems, and called to inquire. Within the hour, he had called me back with the data from the Cabinet Cooler Sizing Guide I sent him, and we determined that a Model 4315 NEMA 12 Cabinet Cooler System – 1,000 Btu/hr – w/Thermostat Control would fit the bill. He placed the order before we got off the phone.  Easy.

EXAIR Cabinet Cooler Systems - the easy solution to your overheating electronic controls.
EXAIR Cabinet Cooler Systems – the easy solution to your overheating electronic controls.

As a stock catalog product, this shipped the same day, thanks to the prompt attention paid to processing the order. Since they were extremely motivated to keep this machine running properly, it shipped for arrival the next morning.  Easy.

As soon as it got there, they opened the box and prepared to install it. Of course, these are designed for quick and easy installation, so they were up and running by mid-morning…less than 24 hours after the production supervisor asked his engineer for a way to keep his machine running.  Easy.

“Easy to do business with.” It’s more than a saying we have around here; it’s who we are at EXAIR. If you’re reading this blog, chances are you might already know this. Regardless, if you have a compressed air product or application that you’d like to discuss, give us a call.  Easy.

Russ Bowman
Application Engineer
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Expert Product Support Is Second Nature at EXAIR

The other day, my good friend at our German distributor contacted me with a need for some help on a Digital Flow Meter. His customer made a test rig to put the Digital Flow Meter in-line with their machines on a per-machine basis to check for flow rates and leaks. That’s a great way to use the Flow Meters. But this customer was making some bench tests and were not getting what they felt to be proper flow rate readings and their readings were not consistent between the Digital Flow Meter readout and the data pulled from the USB Data Logger.

Luckily, my colleague and his customer thought to send me some photos of their set-up as well as a data chart output from the Data Logger. These made the job of sleuthing out the problem that much easier. You see, the customer took the time to read the instructions to know about how long to make the test pipe and where to locate the meter along the length of that test pipe. So, they wanted to show me that they had 30 diameters of pipe up stream and 5 diameters of pipe down-stream per the instructions.

When I viewed their photo as you will see below, I saw everything seemed to be laid out well and assembled with good technique. But one thing stood out to me. If the 30 diameters of pipe were up-stream of the meter. That meant the airflow was coming to the meter from the right in the photo. And as you can see, the meter is sitting upright so they can see the numbers on the readout properly.

Gesamt
Digital Flow Meter on Test Pipe

There is only one problem. In that arrangement, the meter display would actually need to be upside down. The root of the problem is that the meter was installed for ease of reading in this test procedure. The customer neglected to note that there is only one direction in which the meter can be installed. There is an arrow on the side of the meter box that indicates the direction of flow.

IMG_5492
Digital Flow Meter Flow Direction Indicator

When you mount the meter counter to that arrow, the readings given by the meter become distorted due to how the meter works. One probe is heated to maintain a set temperature differential and if installed in reverse order, the meter overcompensates in its power applied which then messes up the reading output. The solution to this problem was to simply un-bolt the meter from the pipe and flip it over to have the right orientation. Unfortunately, this is what can happen when the instructions are not consulted in their entirety. But then again, who of us haven’t been guilty of that at some point!

The other problem the end customer was having was a mismatch of readings between their meter and the USB Data Logger. So I reviewed their output flow graph and noticed right away the problem. See the graph below:

Capture
Flow Data Chart

When setting up the USB Data Logger through the software, they neglected to set the 4 mA base line to equal zero flow. So, whatever value was stored in the software ended up making 4 mA set to about 3 m3/minute according to the graph above. The top end of the flow meter’s capacity also has to be entered into the software as the 20 mA value so that the milliamp output truly mimics what the flow meter is seeing.

After a quick discussion with my colleague, he then turned to his customer to have the same discussion with them and all was working fine by the end of the day. The customer could get on to the original task at hand which was to discover leaks and baseline his machines for airflow.

If you ever have any difficulty with an EXAIR product, we have a full staff of Application Engineers who can assist you with these kinds of problems with the equipment. It is truly our goal to make sure that everyone’s experience with our company is top notch.

Neal Raker, International Sales Manager
nealraker@exair.com
EXAIR_NR

Always make sure you have good support.

There is nothing worse than buying something with great hopes that the device will help you achieve a goal only to find out it doesn’t work at all like you had hoped or like the advertisement said it would.  I take that back…  The only thing worse than this is to discover there is no technical support or information on the product and you are basically stuck with something that doesn’t work.   Other times you can make do with the performance but it just doesn’t do as good a job as you need it to.  I like to call these “Band aid fixes”.   (What is shown below is what I truly hope to be one of those fixes.)

Here at EXAIR I get quite a few calls where people have an application that kind of works but they could really use something that is going to be more effective.  This is where our team of Application Engineers comes in.  You see we not only help you choose the product that will work for your application but then if you get it in-house and it isn’t working as good as you hoped then you call back in and we give you full tech support of the products for free.  We’ll help you fine tune the applications as much as possible and if it still doesn’t work we will take the product back on our 30 day guarantee.

Everything you do is always better with the proper support or safety net.  Just like my brother in-law and I had a support vehicle when we went through Deal’s Gap.   The video from the support vehicle is below.  (It’s sped up due to the time constraints of YouTube.)

So if you need some technical support on your application or on our product, feel free to give us a call.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF