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PAINT BOOTH AIR FLOW: HOW IT WORKS

During spray jobs in a paint booth, the exhaust system must draw substantial quantities of air out of the shop in order to operate. These volumes must be replenished with equal volumes of air coming into the booth.

STE_AMU Full CornerAIR MAKE-UP (AMU) is defined as…a mechanical means of replacing air that has been exhausted out of the booth.

It’s simple…. it’s all about paint booth air flow. How much air in being put into the booth and how much is being taken out. Airflow while spraying takes the over-spray away from the paint job and out of the booth.

Air in – Air out. Air in – Air out. Air in – Air out. Air in – Air out. That’s it. With the Sure-Cure Air Makeup Unit, you control the amount of air pushed into your booth. Why would you need to push air into your booth?

NEGATIVE AND POSITIVE BOOTH PRESSURE
When the exhaust fan of the booth is turned on, it creates a “negative” air pressure in the booth cabin (taking out more air than is being put in). When there is a negative air pressure, the booth will try to suck in as much air as possible, including dirt and debris from outside the booth. THINK VACUUM CLEANERS.   

To counter this “negative” pressure, an Air Makeup Unit (AMU) unit is used to supply air to replace the air being exhausted. If the AMU is designed to force more air into the booth than is exhausted…the booth is said to have “positive” air pressure. In this case, the booth has more air than outside the booth and when a door is opened, dirt and debris is pushed away from the booth. THINK STANDING IN FRONT OF A FAN. Continue reading PAINT BOOTH AIR FLOW: HOW IT WORKS

Do I Need Paint Booth MakeUp Air? What the heck is it?

Sure-Cure Air Makeup Unit
Sure-Cure Air Makeup Unit

Since we have announced the arrival of the Sure-Cure AMU to the market, we have been getting a lot of questions from customers about what an Air Makeup Unit does, why it is needed and how it works. Here are the simple answers to all of those questions. We’ll try not to make it too complicated, because it’s really simple…. It provides lots of air to the paint booth.

Now, why would anyone need all that extra air? Well, it’s not really ‘extra’ air, it’s replacement – or makeup – air for air that has been used and expelled out of the booth. Booth exhaust systems use up large volumes of air from the space that it is installed. If this air is not replaced at the same rate that it is expelled, the booth, or the building, will experience negative pressure (the air pressure outside the building is greater than the air pressure inside the building).

Why is negative pressure bad? At the risk of sounding like a bunch of engineers, some indicators of negative pressure include the suction pressure that makes booth STE-AMU_Fulldoors difficult to open, exhaust fans that don’t work properly, drafts around doors and windows that cause a poor paint job and poor indoor air quality.

What does this have to do with your painting? Pressure problems make it difficult to paint in a booth and achieve proper coating and curing. When you are able to control the booth pressure and temperature, you are able to effectively remove particulates from the air that can negatively affect the quality of your finish. These problems are more pronounced during the cold season when windows are kept closed, reducing the natural pressure-balancing effect.

When you have an air make-up system, like the Sure-Cure AMU, the unit replaces the air that is expelled by a building’s exhaust system, maintaining the proper balance between inside and outside air pressures.

Some Cool Things About Air Makeup Units:

  • Replacement air can be heated in the winter months or to improve curing time. You can choose to not heat the replacement air in warmer months.
  • Cure your paint job in under an hour, increasing your daily productivity by up to 10X
  • Greatly reduce infiltration of cold outdoor air and drafts through opened booth doors
  • Encourage proper operation of booth exhaust systems
  • Improve the booth’s air quality
  • Eliminate suction pressure at doors
  • Decrease load on existing HVAC system
  • Lower energy costs by as much as 35%
  • Maintain a more comfortable and productive working environment

There are many individual benefits and features that differentiate AMU models and makes. It’s in our Sure-Cure air makeup unit features that make our unit safer and easier to operate. Now that you know why you need an AMU, check out all the benefits of having our AMU.

Want to see the video that launched it all? See the Sure-Cure AMU, in action, from all angles in just 55 seconds!

 

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