EMS-USA Insulated Doors	www.ems-usa.us

News From EMS-USA Insulated Doors

	Hello, Dietz And Watson recently replaced one of their bi-parting sliding doors (at right) with an all stainless EMS-USA insulated door. The previous door, as you can see, was no fit for a food production facility. The old door had rust streaming down both door leafs from the header, that was “supposed” to be stainless, but proved otherwise.  In addition, the old door had numerous areas for harmful bacteria to collect and cause sanitation concerns. The engineers at EMS-USA Insulated Doors solved the problems of rust developing from wash downs with their unique stainless steel hygienic rail.  In addition, the circular rail is very east to clean and minimizes any debris collection points. We invite you to see for yourselves the practical value these doors bring to the food industry. If you need to replace any of your doors we would like the opportunity to talk to you so you can learn more about our complete door line. Dietz And Watson did.  How about you? Regards, EMS-USA Insulated Doors

	gholz@ems-usa.us www.ems-usa.us Phone:  608-744-3145                                                                                        Fax:  608-744-3144 Cuba City, WI

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The Critical Role that Hinges Play on your Cooler and Freezer Doors

The Critical Role that Hinges Play on your Cooler and Freezer Doors

Back when Mountain men built their cabins they would build a door then attach leather straps to the door as hinges, they served their purpose the door opened and the door closed. What I’m saying is anything can be used for a hinge and while we have come a long way from the inventions of Daniel Boone and Davy Crocket we still can improve our hinge.

Today perhaps we don’t think too much about “Hinges” we walk through countless doors every day and the door opens and closes swinging on hinges of one kind or another. Life goes on without much thought.

But on a freezer or cooler door the hinge becomes a bit more important for two reasons.

The doors weight and maintaining a good seal is imperative to the doors operation. While some door manufactures have good seals and strong hinges to support the door they don’t always work together in harmony. 

So imagine a door that not only considers the weight of the door and adjusts its placement of hinges accordingly, but also takes into account the seal. Not only does the door seal well but the seal lasts. And to top it all off you can adjust the door up and down at the hinge with the turn of a wrench.

EMS has made this a reality with the development of their hinges. The first part of the hinge that should be addressed is its material. As with all EMS doors the hardware is stainless steel and our hinges are no exception whether on our commercial doors or freezer doors stainless steel is a standard.

Does the placement of the hinge matter? It depends on the weight and size of the door; this dictates our number and placement of hinges.

For instance our Freezer door (the GTM 1) can be used in blast freezer rooms reaching -40 degrees. The thickness of the door ranges between 4.72”- 6.30” depending on application and temperature difference. At EMS we design the door for the application not a one size fits all, thus the range in door thickness.  Now our door is light in comparison to many manufactures, we use 10# polyurethane foam (read news letter article Why EMS-USA Uses a 10# Polyurethane Foam) which strengthens the door and eliminates the need for an internal frame and absolutely no wood in or around the door.

OK, that’s interesting. Why? Well, let’s think about it. Our engineers did.Where is most of the weight of the door - the bottom, middle, or top of the door? If you said top of the door you're right. So that is where the added support should be too right? So when you look at an EMS door you will see the third hinge 2” below the top hinge. We’re not trying to be different we’re trying to engineer our door so it works and lasts for our customers. You could have a gold plated door but if it falls off its hinges or begins to tilt what good is it?

Now, what about the seal? We have great seals all the way around the door. But again what good are they if they don’t last and they wear off.  This is a common problem with most doors, the bottom seal wears out as door opens and closes. OK, so they have a threshold for the door it keeps the door up and off the ground and thus the seal only touches when the door closes? What about the employee with the cart back in forth over the threshold bump, bump or the wash down when the threshold makes a dam? 

EMS doors eliminate the threshold and the seal wear issue with “rising hinges” that come up as the door swings open lifting the door ¼ ” up and out of the way. In fact our full line of doors has this feature of rising hinges.  However, only our freezer and cooler doors have rising hinges that have a three-dimensional adjust-ability.

EMS has taken all things into consideration with the development of our swing door line. We have really only touched on one of the aspects of our door and one that most may think is inconsequential: the hinges. It’s really the attention to detail that make EMS-USA an industry leader, so check out our whole line at http://www.ems-usa.us.

MOTORS: Gear-less vs. Geared

The electric motor, the work horse of modern industry.  Since the Industrial Revolution motors of one form or another have shaped our lives. In the beginning we would first would power up an electric motor and simply see how fast it could spin.  Then we would attach the motor to pulleys and gears load them up until they burned up. We later realized that if you increase voltage and motor windings you would increase the power of the motor.  Eventually we learned more about electricity we could adjust the frequency or aptitudes making our motors perform better, thus the invention of “The Control”.

Today electric motors are a huge industry in and of themselves they have become very job specific and the control today is just if not more important than the motor it runs. I’m not trying to give you a history lesson on motors and controls but rather look at how they affect our industry in power operated doors.   

Most power sliding doors use a gear motor which consists of an electric motor attached to a set of gears to provide the needed torque to move a large sliding door.
This gets the job done, the door moves. 

However having gears attached to a motor adds to the moving parts and to the maintenance. Now you have grease fitting, chains and with chains more grease and grime.  Because of this particular system now when the door looses power you have to have a mechanical disconnect to open the door in an emergency situation again adding to the moving parts of the door.

Sounds complicated doesn’t it. Great for the maintenance man they will be busy.
The question is how can we simplify this system?

Well why not take the gears out and change the greasy chain to a titanium reinforced cog belt that is moved by a cog pulley attached to the motor shaft. Then use a Gear-less Motor or Induction AC motor aka” the squirrel cage” motor that freewheels when the power is off. 

Is this a new motor? No an inventor by the name of Nikola Tesla designed this motor in 1882. It is one the most common motors used today in fact. It’s the same motor that is used with gears.

Why do others use gears? It’s all about torque. The gears give them a mechanical advantage to overcome the weight of the door and add torque to the system to move the door. OK how can we take away the gears and still move a large door?

First EMS doors are light and strong due to their design, 10# foam without any wood or add structural frame to weigh down the door.

Second our rail and rollers eliminate friction and rolling resistance with sealed bearings in our rollers. Once the door is out of the seal depressions built into our rail the door moves easily.

Third and most importantly our engineers have developed a Control that dynamically adjusts the current to the motor increasing the torque to move the doors without added gears. The very nature of the motor allows the motor to freewheel when powered off.
     
The benefits:

·    The motor naturally freewheeling eliminates add safety features like the mechanical disconnect.

·    Without all those extra moving parts, the gears, the mechanical release and the grease fittings we have eliminated a lot of maintenance. Good right?

·    Replacing the chain with a dry cog belt giving us a clean greaseless way of moving our door. No need for a cover for the chain we don’t have one to collect dirt and grime.

·    Again less maintenance and cost.

To recap EMS-USA has provided the only to date in the USA “Gearless Motor Drive” to our sliding door line. Providing a simple, clean, and well engineered product to our customers.


By:  Jesse O’Neil
        EMS-USA

Cutting Edge Technology When Power Is Needed

EMS -THE ONE AND ONLY GEAR LESS MOTOR AND CONTROL

           

The motor naturally freewheeling eliminates add safety features like the mechanical disconnect. Without all those extra moving parts, the gears, the mechanical release, the grease fittings, we have eliminated a lot of maintenance.

           

Without EMS’s cutting edge control that dynamically adjusts the torque of the motor none of this would be possible. Not to mention all the options we have to offer to operate our doors.

EMS-USA has provided the only to date in the USA “Gearless Motor Drive System” to our Vertical and Sliding door lines. Providing a simple, clean, and well engineered product to our customers.

SEE MORE AT EMS-USA.US