EasySwitch Wet-Dry Vac with HEPA Filter

When I bought my first house (I was a happy condo dweller prior to the birth of my second son), I got a gift card for a home improvement store from some of the folks I worked with. Since my mother-in-law had already bought me a lawn mower, I used that gift card to purchase another staple of the Suburban Dad’s Garage: a heavy duty wet-dry shop vac. It quickly proved its usefulness as a dry vac in cleaning up after a couple of wood working and plumbing (mis)adventures, and as a wet vac following a sump pump failure & subsequent replacement. That last part was when I learned a valuable lesson about the filter cartridge that catches dirt, debris, sawdust, PVC shavings, copper shavings & solder slag: it gets ruined, and makes a HUGE mess inside the drum, if you don’t take it out before pumping the residual water from your basement sump.

I’d like to say that never happened again, but I had the old “there’s got to be a better design” thought every time I carefully positioned a large trash bag underneath so I could finagle a waterlogged & debris-laden filter out of my shop vac canister without making an even bigger mess on the floor. Now, I don’t believe this had anything to do with our R&D engineers’ development of the EasySwitch Wet-Dry Vac, but it IS an amazing coincidence…

Not that it’s particularly difficult to change the filter in my shop vac, but this is indeed an “Easy Switch”.

If you’re looking for a powerful, reliable, and easy to use industrial vacuum, here it is. Made to fit a standard 55 gallon open top drum, the EasySwitch Wet-Dry Vac Systems come in a variety of configurations to meet your specific Industrial Housekeeping needs:

  • If you have a drum, the EasySwitch Wet-Dry Vac kit comes with everything you need for basic operation:
    • The EasySwitch Wet-Dry unit itself
    • Drum Lid with filter hatch
    • Standard or HEPA filter & pre-filter
    • 20ft compressed air hose, pressure gauge, and shutoff valve
    • 10ft vacuum hose, crevice tool, straight wand, skimmer tool, and dust brush
  • For portability and convenience, the Deluxe system adds:
    • Drum dolly
    • Upgrade to anti-static vacuum hose and Heavy Duty Aluminum Tools
    • Spill Recovery Kit (for floor cleanup of liquids)
    • Magnetic Tool Holder
  • And if you need a drum, the Premium system adds that as well.

The standard filter is suitable for general purpose dry vacuuming, but for critical dust removal, our HEPA filter conforms to IEST-RP-CC-007 specifications for minimum 99.97% filtration at the 0.3 micron level. If your cleanup involves toxic materials, respiratory irritants…anything that people shouldn’t be breathing…you’ll definitely want the HEPA filter.

For critical dust containment, the award winning HEPA EasySwitch Wet-Dry Vac System is your durable, reliable, compressed air operated solution!

And, of course, you can still remove the filter (don’t forget that part; that’s how this blog started) for high performance liquid vacuuming as well. If you’d like to find out more about the HEPA EasySwitch Wet-Dry Vac – or any of our other Industrial Housekeeping Products – give me a call.

Russ Bowman, CCASS

Application Engineer
EXAIR Corporation
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EXAIR Cold Gun, Different Application, Problem Solved!

Recently I was working with a customer on sizing a EXAIR Cabinet Cooler when I found out they would be best suited by another EXAIR product! They wanted to cool some analyzer panel fins (heat sinks) while keeping dust off of them. This application said Cold Gun all the way!

I recommended our Model # 5315 Cold Gun Aircoolant System with two cold outlets. The Cold Gun produces a 50°F temperature drop from compressed air supply temperature and provides 1,000 Btu/hr. of cooling capacity. For example, if your compressed air supply temperature is 70°F you would effectively see 20°F air being discharged from the cold exhaust. The Dual Point Hose Kit splits the cold airflow into 2 separate streams, providing for a wider coverage area.

5315_SCGdual
Model # 5315 Cold Gun System with dual point hose kit

The customer decided to order a single unit and after a week of testing replied back…

“We tried one a week ago with excellent results! We are installing three more today. 

Thank you so much for your help! Our analyzer is running 31°F cooler than it had been with no more overtemp failures!”

It goes without mentioning, but this is the type of positive feedback we are thrilled to hear! It feels incredible when a customer takes time out of their busy schedule to acknowledge how EXAIR products provided the perfect solution for their needs!

BUT the story doesn’t end there… just last week, over 2 months since our last correspondence, the customer sent me another email that read…

“Just a follow up on the effectiveness of the cold air guns. We have not experienced a single failure of our TOC analyzers since the guns were installed two months ago.

The cold air solved the problem of our analyzer overheating — even during the hottest part of the summer.

Thank you for your excellent recommendation!”

I let the customer know how much we appreciated the awesome news and how happy we were to be able to solve their problem. At the end of the day, that’s what we strive for, to provide the best and largest selection of Intelligent Compressed Air Products on the market today.

Jordan Shouse
Application Engineer

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EXAIR Siphon Fed Air Atomizing Liquid Spray Nozzles

Amongst EXAIR’s continuously growing product offering, some of the newest are a family of Air Atomizing Liquid Spray Nozzles that does not require a pressurized liquid source. These are known as the Siphon Fed Air Atomizing Nozzles. These nozzles can be easily implemented where a tank can be installed and lower the cost of the installation by not requiring a liquid pump, just point of use compressed air.

Siphon Fed model

This action is done by the unique design of the air cap.  As the velocity of the air passes through the air cap, low pressure is created by a venturi.  The Siphon Fed Atomizing Nozzles can draw liquid from a suction height of 36” (91 cm), or gravity fed. They are manufactured from 303 stainless steel for durability and corrosion resistance. The Siphon Fed models can spray viscous fluids up to 200 centipoises and are used in many applications like rinsing, coating, cooling, quenching, humidification, or dust control. The images below showcases how simple the setup can be for the siphon and gravity fed installations.

EXAIR Siphon Fed Nozzles work with non-pressurized liquids, either siphoned (left) or gravity fed (right.)

EXAIR carries three different body sizes, 1/8” NPT, ¼” NPT, and ½” NPT ports; so, you can create a light mist or a heavy spray of liquid.  The maximum liquid flow rate is controlled by the air cap and liquid cap combination.  A unique feature of the EXAIR Atomizing Nozzle is that the caps are easily interchangeable for each body size to modify the spray patterns, control the amount of fluid, and reduce any downtime if cleaning is required.  The video below shows just how easily the changeover is done.

In addition to the three different inlet/body sizes, we also offer the Siphon Fed in both a round spray pattern or a flat fan spray pattern. These are also controlled by the air and liquid cap combination. This means it is easy to convert a round pattern that may be needed for a job, over to a flat fan pattern for the next setup. Each pattern is also available in several flow rates of liquid and air to dial in the performance required by the application.

Siphon Fed Air Atomizing Spray Nozzles

Additionally, if you would like to positively shut the liquid flow off from the nozzle in order to prevent drips, over use of liquid, or to shut off the gravity fed liquid when not needed, the No-Drip versions of these nozzles is also available. This is easily controlled by simply reducing the compressed air operating pressure to below the designated cracking pressure of the patented No-Drip valve.

No Drip Siphon Fed Round Pattern Atomizing Nozzle

If you would like to discuss which spray nozzle is best suited for your application, please reach out to an Application Engineer.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF

The Negative Effect of Hot Ambient Conditions on Traditional A/C Refrigerant Panel Coolers vs EXAIR Cabinet Coolers

EXAIR’s High Temp Cabinet Cooler Systems

As summer endures and temperatures continue to rise panel conditioning units can start to struggle to keep your electronics cool.  An agricultural company contacted EXAIR as they were having some issues with their air conditioning panel cooler.  The increase in outside temperatures caused the air conditioning systems to underperform.  The electronics were overheating and shutting down production.  They needed a better way to keep the internal circuits cool during the hotter months of summer. 

They sent in the information on the A/C panel that they were using (reference photo below).  I circled the important factors that we would need.  EXAIR is familiar with these tags as we helped many customers to find a more reliable way to keep their electronics cool.  This customer stated that they had already replaced three units in the past 10 years.  The one above has been in operation for only 3 months, and they were still worried about failure.  It could be due to lack of maintenance, dirty environment, or high ambient temperatures, but the short life of the refrigeration units was a major concern. 

From the placard, the total cooling capacity was DIN EN 14511 L35 L35 0.38KW as circled above.   The DIN EN 14511 is a European Standard that rates the performance of air conditioning units.  The first L35 is the temperature rating for inside the panel, 35oC.  The second L35 is the ambient temperature, 35oC.  The cooling capacity at those temperature conditions is 0.38KW, or 1,296 BTU/hr.  As you can see, the performance was measured with the ambient temperature at 35oC (95oF).  If the ambient temperature goes above this standard rating, the cooling capacity of the air conditioning unit will start to decrease.  With the EXAIR Cabinet Cooler Systems, we use the internal temperature as 35oC (95oF) as well, but our external temperature can be as high as 93oC (200oF).  Here is a diagram showing the range of the different types of cooling devices as compared to the ambient temperatures and the environment.

Another note on the placard is the IP Code – IP54; and “Maintains the environmental integrity of type 12”.  EXAIR offers three different NEMA ratings to keep the integrity of your panel.  We offer NEMA 12, NEMA 4 and NEMA 4X.  The rated voltage for the A/C panel cooler is 115 V / 60 Hz / 1-.  EXAIR offers three different voltages with our solenoid valves to work in conjunction with our thermostats.  We have 240Vac, 115Vac, and 24Vdc.  So, from the information supplied by the A/C panel cooler, we are getting close for a recommendation.  What do we need next?  The ambient temperature condition which affected the A/C panel cooler.  I need this information to calculate the heat load on the hottest day of the hottest month. 

In the Cabinet Cooler Sizing Guide that we sent to them; they marked the “Maximum external temperature possible” at 130oF (54.4oC).  As seen in the chart below, this is the upper limit for the performance conditions for an A/C unit.  With the EXAIR Cabinet Cooler System, we can offer a High Temperature Cabinet Cooler that can work up to 200oF (93oC).  And, they will still operate under the harshest of environments.  With the size of their panel, the external heat load was calculated at 980 BTU/hr.  Remember, since we are replacing the A/C panel cooler with an EXAIR Cabinet Cooler System, we will need to add the 0.38KW or 1,296 BTU/hr to the external heat load.  The total heat load is measured at 980 BTU/hr + 1,296 BTU/hr = 2,276 BTU/hr

Since we now have all the information, I recommended a model HT4340 Cabinet Cooler System.  This system has a NEMA 12 Cabinet Cooler, a filter, a cold air distribution kit, a thermostat, and a 115Vac solenoid valve.  The cooling capacity for the HT4340 is 2.800 BTU/hr; above the required 2,276 BTU/hr maximum heat load.  So, when the internal temperature reaches 95oF (35oC), the thermostat will turn the solenoid off to save compressed air.  This Cabinet Cooler System fit the criteria as noted on the placard on the A/C unit for replacement. 

HT4340 Cabinet Cooler System

With they received the model HT4340, they were amazed at how small and compact the unit was.  The Cabinet Cooler does not have any moving parts, Freon, or condensers to clean.  They only need clean compressed air.  The installation was also very simple.  It took them longer to remove the A/C unit than to install the EXAIR Cabinet Cooler.  They were able to start using the Cabinet Cooler in less than one hour.  They also commented to me about how they wished that they knew about the Cabinet Cooler Systems 10 years ago.  The breakdowns, the replacements, the maintenance, and the headaches that the A/C units delivered cost them much money in material and production shutdowns. 

If you have electrical panels over-heating or air conditioning units under-performing, you should try an EXAIR Cabinet Cooler System.  You can fill out the Cabinet Cooler Sizing Guide and an Application Engineer will find the best model to keep your operations running; even during the summer months. 

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb