Industrial Vacuums For Most Any Cleanup Need

Vacuum cleaners…most of us think of the electric-powered devices that we clean our carpets at home with. The idea of utilizing vacuum in cleaning applications, however, predates the widespread introduction of electric power by a couple of decades. The original idea was to marry a manual vacuum generating device to a carpet sweeper. These had been around for some time, and they’re still seen today: the beater brush turns as the sweeper is pushed across the floor; it picks up dirt in the brush bristles, and deposits it in an internal receptacle. You’ve probably seen them used in restaurants to tidy up small messes on the floor, in lieu of dragging out the noisy vacuum cleaner while folks are eating.

Anyway, these first vacuum cleaners relied on a bellows, piston cylinder, or other such device that was operated by hand, foot – or, according to one source, a rocking chair – to generate a vacuum. Since it took one person to operate the vacuum generating part, and another to push the sweeper, they weren’t very popular at a time when folks were generally looking for labor SAVING products.

The proliferation of electric power around the turn of the 19th/20th century brought about electric vacuum cleaners.  Most homes have one…including the ‘shop vac’ in my garage, my home actually has three.  These are great for home use; many have long cords that allow you to clean the floors in adjacent rooms without unplugging & re-plugging, and most come with a convenient set of tools for baseboards, furniture, HVAC vents, etc.  For carpet & upholstery, they can’t be beat.

In industrial settings, though, the electric-powered models can find themselves at a disadvantage.  The impellers can clog or break, and the electric motors will, in time, burn out.  If used in wet environments, great care must be used (as with any electric products) or there can be a very real shock hazard.

EXAIR Industrial Housekeeping Products offer a solution to all of these issues.  With no moving parts or electric motors, they are extremely reliable.  If you supply them with clean air, they can run darn near indefinitely, maintenance free.  And no electric power means no shock hazard.

We have a variety of products to meet most any need.  Our Chip Vacs and Heavy Duty Dry Vacs are made for dry material cleanup.  They install (in minutes) on an open top drum, and are available with a variety of accessories…tools, drum dollies, tool holders…even the drum itself if you need one.  The Chip Vac is specified for most ‘general purpose’ jobs; the Heavy Duty Dry Vac is more powerful, and abrasion resistant, for more aggressive needs.  Both exhaust the vacuum air flow through a Filter Bag to contain the particulate in the drum.

The Heavy Duty HEPA Vac features the same high power and rugged construction as the Heavy Duty Dry Vac, but replaces the Filter Bag with a HEPA (High Efficiency Particulate Air) Filter for maximum dust containment.  These are used where critical dust removal, mold & allergen containment, or trapping airborne irritants are called for.

(Left to right) Chip Vac, Heavy Duty Dry Vac, Heavy Duty HEPA Vac
Reversible Drum Vac Family

The Reversible Drum Vac is a two-way liquid pumping system, also made for mounting on standard steel drums…closed top drums, in this case.  They can fill or empty a 55 gallon drum in 90 seconds.  Options include 5, 30, and 110 gallon drum sizes, and a High Lift model – increased suction head for deep wells, underground tanks, or higher viscosity liquids, up to 1,400 cP.

Chip Trapper Systems come complete, ready to go, right out of the box.

The Reversible Drum Vac is also at the heart of our popular and award-winning coolant filtration system: the EXAIR Chip Trapper.  A Filter Bag in the “fill” line traps chips, swarf, and shavings.  The liquid passes through, and is able to be immediately pumped back out.  Not only is coolant life extended, regular cleaning of the coolant sump prevents loss of coolant flow due to clogging of the supply lines.  The Chip Trapper is available in 30, 55, and 110 gallon sizes, and also in the High Lift version.

Speaking of two-way operation, the EXAIR Vac-u-Gun is both a vacuum AND blow gun…simply reverse the orientation of the nozzle insert to reverse the operation:

EXAIR’s Vac-u-Gun transforms in seconds from powerful vacuum to efficient blow gun.

The Vac-u-Gun is an efficient, quiet, and versatile tool with numerous applications, from vacuuming sawdust or shavings, to conveying small parts or pellets, to blowing off chips, water, coolant, or scrap.  And, just in time for Spring Cleaning season, we’re letting you find out just how handy it is, for free – by including one with any qualifying Industrial Vacuum purchase, now through April 30, 2019.

If you’d like to discuss a cleanup application, and how an EXAIR Industrial Housekeeping Product can suit your needs, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Understanding Compressed Air Supply Piping

An important component of your compressed air system is the supply piping. The piping will be the middle man that connects your entire facility to the compressor. Before installing pipe, it is important to consider how the compressed air will be consumed at the point of use.  You’ll also need to consider the types of fittings you’ll use, the size of the distribution piping, and whether you plan to add additional equipment in the next few years. If so, it is important that the system is designed to accommodate any potential expansion. This also helps to compensate for potential scale build-up (depending on the material of construction) that will restrict airflow through the pipe.

Air Compressor
Air Compressor and Storage Tanks

The first thing you’ll need to do is determine your air compressor’s maximum CFM and the necessary operating pressure for your point of use products. Keep in mind, operating at a lower pressure can dramatically reduce overall operating costs. Depending on a variety of factors (elevation, temperature, relative humidity) this can be different than what is listed on directly on the compressor. (For a discussion of how this impacts the capacity of your compressor, check out one of our previous blogs – Intelligent Compressed Air: SCFM, ACFM, ICFM, CFM – What do these terms mean?)

Once you’ve determined your compressor’s maximum CFM, draw a schematic of the necessary piping and list out the length of each straight pipe run. Determine the total length of pipe needed for the system. Using a graph or chart, such as this one from Engineering Toolbox. Locate your compressor’s capacity on the y-axis and the required operating pressure along the x-axis. The point at which these values meet will be the recommended MINIMUM pipe size. If you plan on future expansion, now is a good time to move up to the next pipe size to avoid any potential headache.

After determining the appropriate pipe size, you’ll need to consider how everything will begin to fit together. According to the Best Practices for Compressed Air Systems from the Compressed Air Challenge, the air should enter the compressed air header at a 45° angle, in the direction of flow and always through wide-radius elbows. A sharp angle anywhere in the piping system will result in an unnecessary pressure drop. When the air must make a sharp turn, it is forced to slow down. This causes turbulence within the pipe as the air slams into the insides of the pipe and wastes energy. A 90° bend can cause as much as 3-5 psi of pressure loss. Replacing 90° bends with 45° bends instead eliminates unnecessary pressure loss across the system.

Pressure drop through the pipe is caused by the friction of the air mass making contact with the inside walls of the pipe. This is a function of the volume of flow through the pipe. Larger diameter pipes will result in a lower pressure drop, and vice versa for smaller diameter pipes. The chart below from the Compressed Air and Gas Institute Handbook provides the pressure drop that can be expected at varying CFM for 2”, 3”, and 4” ID pipe.

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Air Pressure Drop

To discuss your application and how an EXAIR Intelligent Compressed Air Product can help your process, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.

Jordan Shouse
Application Engineer
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Images Courtesy of  the Compressed Air Challenge and thomasjackson1345 Creative Commons.

Static Elimination for Tight Spaces or Areas Sensitive to Airflow

If you’re having problems with static build up on small and/or lightweight materials where even the smallest amount of airflow can disturb the product, EXAIR has the perfect solution, the EXAIR Gen4 Ionizing Point.  The Gen4 Ionizing Point is a single point ionizer that lends itself naturally to winding, rewinding, slitting or a myriad of other applications.  It can even be mounted through the wall of a duct to neutralize static charges in an existing air or conveyance duct.

Gen4 Ion Point 1
EXAIR’s Ion Point In Action

The Gen4 Ionizing Point is very powerful and robust solution that can dissipate 5,000 volts in .24 seconds from 2″ (51mm) away!  The Gen4 Ionizing Point features an electromagnetically shielded high-voltage cable that is armored to protect against abrasion and cuts and its integrated ground design does not require a separate ground connection.  For even more convenience the Gen4 Ionizing Point is replaceable if the point should ever become dull or bent.

Ionizing Point Performance

Its smaller footprint naturally lends itself to installation into the limited space normally associated with smaller applications.  The stainless steel, and replaceable, emitter point is mounted in a saddle that is 1.77″ (45mm) long by 1″ (26mm) wide and includes two .20″ (5mm) mounting holes that are 1.44″ (37mm) apart for easy mounting.

Gen4 Ion Point 3

Gen4 Ionizing Points are supplied power by either the model 7960 power supply which can operate up to two ionizing products or the 7961 that can operate up to four ionizing products.  Both models feature selectable voltage to run on either 115 VAC or 230 VAC.

The Gen4 Ionizing Point is the perfect solution for spot static elimination without air assistance.  Most importantly both the EXAIR Gen4 Ionizing Point and Gen4 power supplies are UL component recognized to US and Canadian safety standards, and are CE and RoHS compliant.

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All EXAIR Gen4 Static Eliminators use one of two Power Supplies – your choice of the 2-port Model 7960, or the 4-port Model 7961.

When you are looking for static relief application assistance or expert advice on safe, quiet and efficient point of use compressed air products give us a call.   We would enjoy hearing from you!

Steve Harrison
Application Engineer
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Importance of Thermostat Setting for Cabinet Cooling

An EXAIR Cabinet Cooler System with either the Thermostat Control or the Electronic Temperature Control (ETC) option includes a temperature measuring device that is used to control the operation of the Cabinet Cooler System to maintain the set-point temperature.Thermostat and ETC

For most industrial enclosure cooling applications, a temperature of 95°F (35°C) is sufficient to be below the rated maximum operating temperature of the electrical components inside the cabinet. EXAIR Thermostats are preset to 95°F (35°C) and are adjustable. Maintaining the cabinet at 95°F (35°C) will keep the electronics cool and provide long life and reduced failures due to excessive heat. But if 95°F (35°C) is good, why not cool the cabinet to 70°F (21.1°C)?

When cooling an enclosure to a lower temperature, two things come into play that need to be considered. First, the amount of external heat load (the heat load caused by the environment) is increased. Using the table below, we can see the effect of cooling a cabinet to the lower temperature. For a 48″ x 36″ x 18″ cabinet, the surface area is 45 ft² (4.18 m²). If the ambient temperature is 105°F (40.55°C), we can find from the table the factors of 3.3 BTU/hr/ft² and 13.8 BTU/hr/ft² for the Temperature Differentials of 10°F (5.55°C) and 35°F (19.45°C). The factor is multiplied by the cabinet surface area to get the external heat load. The heat load values calculate to be 148.5 BTU/hr and 621 BTU/hr, a difference of 472.5 BTU/hr (119.1 kcal/hr)

External Heat Load

The extra external heat load of 472.5 BTU/hr (119.1 kcal/hr) will require the Cabinet Cooler System to run more often and for a longer duration to effectively remove the additional heat. This will increase, unnecessarily, the operating costs of the cooling operation.

The other factor that must be considered when cooling an enclosure to a lower temperature is that the Cabinet Cooler cooling capacity rating is effected. I won’t go into the detail in this blog, but note that a 1,000 BTU/hr Cabinet Cooler (rated for 95°F (35°C cooling) working to cool a cabinet down to 70°F (21.1°C) instead of 95°, has a reduced cooling capacity of 695 BTU/hr (174 kcal/hr).  The reduction is due to the cold air being able to absorb less heat as the air rises in temperature to 70°F instead of 95°F.

In summary – operating a Cabinet Cooler System at 95°F (35°C) provides a level cooling that will keep sensitive electronics cool and trouble-free, while using the least amount of compressed air possible.  Cooling to below this level will result in higher operation costs.

If you have questions about Cabinet Cooler Systems or any of the 15 different EXAIR Intelligent Compressed Air® Product lines, feel free to contact EXAIR and myself or any of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer
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The Case For EXAIR Swivel Fittings

One of the more common questions we get here in the Application Engineering department at EXAIR is…

“What’s the best angle to position a Super Air Nozzle?”

The simple (and perhaps a little snarky, but I swear that’s not intended) answer is…

“The angle it takes to get the results you need.”

But wait, there’s more…we’re not going to leave anybody hanging like that. Many blow off applications are going to be best served by a “sweep” of air, at a low angle. That will be ideal for removing a light layer of dust from a relatively flat and smooth surface. A bit larger angle, relative to the surface, may be necessary if you need some impingement force to dislodge sticky, clumpy, or mildly adhesive debris.  Rarely will you want to blow directly, at a perpendicular angle, to a material’s surface.  An exception to this might be if you’re trying to remove excess moisture from a porous and thin material, like a web fiber.

Regardless of what angle you need to aim your Super Air Nozzle, there are several ways to do it.  You can use a compression fitting them onto bendable copper tubing…just don’t bend it too much or too often.  We’ve got Stay Set Hoses that allow for quick & easy repositioning…they come in lengths from 6″ to 36″, and are in stock.

EXAIR Stay Set Hoses and Swivel Fittings are ideal for installation and positioning of your Super Air Nozzle.

If you want to hold it in place firmly and securely, you’re looking for a Swivel Fitting.  They’re available for almost all of our Super Air Nozzles, from the Atto to the 1″ NPT Model 1114 High Force Super Air Nozzle.  They offer 50° of total movement, and are made of Stainless Steel for durability in most any environment.

EXAIR Swivel Fittings have male NPT threads on one end, and female NPT on the other.  The smaller Swivels, for the Atto, Pico, and Nano Super Air Nozzles, have M4x0.5mm, M5x0.5mm, and M6x0.75mm female threads, respectively, in the ball of the swivel itself for direct threading of these small Super Air Nozzles.

EXAIR’s Swivel Fitting Family

Swivel Fittings can also be used with a host of other EXAIR products.  In addition to the Super Air Nozzles, for example, they’ve historically been very popular with our Air Amplifiers.  Here’s a short informational video showing just how versatile they are:

EXAIR Intelligent Compressed Air Products are made to be easy to install & operate.  This is our intent from Research & Development, to Shipping & Receiving.  If you have questions, give me a call.  I want you to get the most out of our products!

Russ Bowman
Application Engineer
EXAIR Corporation
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Compressed Air Flow Meter With Wireless Capability Makes Monitoring Demand Easy

Would you like the ability to monitor your plants compressed air usage from one convenient location?  If the answer is yes, EXAIR has just the solution to fit your needs, EXAIR’s Digital Flow Meter with Wireless Capability.

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Wireless capability is an option for EXAIR’s Digital Flowmeter’s.  It is the efficient way to monitor your compressed air consumption wirelessly utilizing the ZigBee® mesh network.  This is accomplished by a module located within the meter that transmits data to an ethernet connected gateway.  Each meter has a range up to 100 feet (30 meters), however the ZigBee mesh network protocol is very versatile as it allows data to also be transmitted from meter to meter, effectively extending the distance over which the system can operate.  So large facilities with great distances to cover are not a problem.

The Digital Flowmeter with Wireless Capability is offered in a kit with a wireless output flow meter, wireless to ethernet gateway, drill guide, power supplies for each component, and ethernet cable for gateway connectivity.  These kits are best suited for new installations.  They are also available without a gateway if you are simply adding an additional meter to a pre-existing Gateway in your plant.  EXAIR simplifies this process by configuring each gateway to communicate with the flowmeter to provide the necessary communication for monitoring your system.  Models from 1/2″ to 4″  iron pipe are in stock. 5″, 6″ iron pipe,  copper pipe ranging from 3/4″ to 4″ diameter and aluminum pipe from 25mm to 101mm diameter are available with short lead time as a special product offering.  Each digital flowmeter is calibrated for the pipe size to which it is mounted and the large digital display shows air use in either SCFM or Cubic Meters per Hour.

Digital Flow Meter Kit
Digital Flowmeter w/ Wireless Capability, Gateway, and Drill Guide Kit

Setting up the EXAIR Digital Flow Meter with Wireless Capability is super easy.  After the meter is installed download the graphing software from our website and install on your computer.  There is also a video tutorial posted in the previous blog from Tyler Daniel, Video Blog: EXAIR’s New Wireless Digital Flowmeter Installation.

The Digital Flowmeter with Wireless Capability is designed for permanent or temporary mounting to the pipe.  It requires the user to drill two small holes through the pipe using the optional drill guide which includes the drill bit and locating fixture.  The two flow sensing probes of the flowmeter are inserted into these holes.  The unit seals to the pipe once the clamps are tightened.  No cutting, welding, adjustments or calibration are needed, ever!  If the unit needs to be removed, blocking rings are available for the 1/2″ to 4″  iron pipe sizes from stock with other sizes available on short lead time as special orders.

If you have questions on Digital Flowmeter’s, Digital Flowmeter’s with Wireless Capability or need expert advice on safe, quiet and efficient point of use compressed air products give us a call.   We would enjoy hearing from you!

Steve Harrison
Application Engineer
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About Compressed Air Dryers – What Are They and Why Use Them

All atmospheric air contains some amount of water vapor.  When air is then cooled to saturation point, the vapor will begin to condense into liquid water. The saturation point is the condition where the the air can hold no more water vapor. The temperature at which this occurs is knows as the dew point.

When ambient air is compressed, heat is generated and the air becomes warmer. In industrial compressed air systems, the air is then routed to an aftercooler, and condensation  begins to take place. To remove the condensation, the air then goes into separator which traps the liquid water. The air leaving the aftercooler is typically saturated at the temperature of the discharge, and any additional cooling that occurs as the air is piped further downstream will cause more liquid to condense out of the air. To address this condensation, compressed air dryers are used.

It is important to dry the air and prevent condensation in the air. Many usages of the compressed air are impacted by liquid water being present. Rust and corrosion can occur in the compressed air piping, leading to scale and contamination at point -of -use processes. Processes such as drying operations and painting would see lower quality if water was deposited onto the parts.

dryers.png

There are many types of dryers – (see recent blogs for more information)

  • Refrigerant Dryer – most commonly used type, air is cooled in an air-to-refrigerant heat exchanger.
  • Regenerative-Desiccant Type – use a porous desiccant that adsorbs (adsorb means the moisture adheres to the desiccant, the desiccant does not change, and the moisture can then be driven off during a regeneration process).
  • Deliquescent Type – use a hygroscopic desiccant medium that absorbs (as opposed to adsorbs) moisture. The desiccant is dissolved into the liquid that is drawn out. Desiccant is used up, and needs to be replaced periodically.
  • Heat of Compression Type – are regenerative desiccant dryers that use the heat generated during compression to accomplish the desiccant regeneration.
  • Membrane Type– use special membranes that allow the water vapor to pass through faster than the dry air, reducing the amount water vapor in air stream.

The air should not be dried any more than is needed for the most stringent application, to reduce the costs associated with the drying process. A pressure dew point of 35°F to 38°F (1.7°C to 3.3°C) often is adequate for many industrial applications.  Lower dew points result in higher operating costs.

If you have questions about compressed air systems and dryers or any of the 15 different EXAIR Intelligent Compressed Air® Product lines, feel free to contact EXAIR and myself or any of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer
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