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How to determine if a make-up air system is required: It’s simple math

Anytime a paint booth is installed in a building, the amount of exhausted air must be a consideration.

For example, a booth exhausting 13,000 cubic feet per minute installed in a building measuring 50 x50 x 15 (37,500 cubic feet), the air will change every two minutes. This produces a negative pressure condition on the building that can cause safety issues. If the building is equipped with gas-fired unit heaters, the negative pressure condition can actually pull gas from the pilot valves and put raw gas into the room. NFPA-33 addresses this with a calculation.

NFPA-33 A.7.3 “If the volume of the room or building where the exhaust system is located is not at least equal to 20 times the volumetric capacity of the fans (three air changes per hour), then additional make-up air should be provided.”

Going back to the 13,000 cfm exhaust fan. 13,000 x 20 = 260,000 cubic feet. The room would have to be 110’ x 110’x 20’ (264,500 cubic feet).

The rule of thumb is to provide the same amount of air being exhausted with some adjustment in the unit to provide the customer with the proper pressure he requires. Some may want slightly more positive pressure while some may want a neutral pressure building.

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

Make-up air units can be placed outside or inside as long as the intake air is drawn from the outside. The control panels are mounted inside the building and can be interlocked to the paint booth to operate simultaneously. If you want more information on the Sure-Cure units from Standard Tools and Equipment, visit us online.

The ductwork is simple, the discharge duct should be equipped with a diffuser to help distribute air more evenly into the room.

If you have any questions, give us a call and we’ll gladly assist in determining if more makeup air is needed. 800-312-7488.

 

 

Air Makeup Units (AMUs) Are HUMMIN’

AMU production 1014 (2)amu production 1014It’s going to be 85 in Greensboro, NC today, but cooler weather is just around the corner!  How do I know that?  Well, I just walked through our Sure-Cure air makeup unit (AMU) production shop, and things are hummin’.  We have four units on the bench in process and several more in the queue this week. These Sure-Cure AMU’s are in big demand.  ETL-certified and tested, they are among the safest units on the market today.

The Sure-Cure will provide gas-heated warm air inside your spray painting booth to speed curing time, even on the coldest days!  With a guaranteed 80 degree rise over ambient air temperature, if it is 0 degrees outside it will be 80 degrees inside your booth!  No more waiting hours or days for dry time.  Plus you can put it into cure mode at the end of the day and go home.  The unit will shut off automatically when the paint is cured.

If you have an Air Makeup Unit that is more than 10 years old you may be a candidate for a new high-efficiency Sure-Cure AMU.  Many of the old style Air Makeup Unit’s contain heat exchangers that can crack over years of use.  This greatly reduces the ability of the unit to heat the air to the desired temperature.  It could also result in dangerous fumes being emitted into your booth or painting area!

Our units are popular because Standard Tools is committed to a 2 to 3 week turnaround in producing these units, even in the winter months.  Other manufacturers take 8 to 12 weeks to ship an AMU!  So get your order in today, and be ready for the cold when it gets here!

Introducing the Sure-Cure Air Makeup Unit from Standard Tools and Equipment Co.

We have always been the innovative type; it’s kind of a given if you’re in the manufacturing business. In today’s market, businesses must adapt and change to endure. Through Standard Tools and Equipment Co, Tools USA (since 1979) and Eagle Equipment (since 1953), have continued to grow and expand, remaining a leader in the industry.

Have you ever found a product and it was so genius and so simple, you thought to yourself, “Why didn’t I think of this?”

We find that our most successful endeavors come from looking around the industry that we know best and noticing that we can create something better than anyone else out there. For us, that’s exactly how Standard Tools and Equipment began making paint booths in 1997. We noticed a need, we heard customer after customer asking and we had all the right elements to make a better booth ourselves. Since then, we have become an industry leader in paint booth systems. We use our knowledge and experience to develop unsurpassed products for our customers.

The Sure-Cure Air Makeup Unit, STE-AMUWe are proud to introduce you to our latest successful adventure, the Sure-Cure® Air Makeup Unit.

We started developing plans for our own air makeup unit in 2011. This plan came from a couple apparent needs:

  1. There was a great need in the market for a safe and reliable unit that had all the bells and whistles included in the marketed price.
  2. Customers were fed up with the lengthy wait times that were currently associated with Air Makeup Units. They didn’t understand how we could design, customize, build and ship a paint booth in less than 10 days but they had to wait months, for their air makeup unit. We didn’t understand it either.
  3. We researched and decided that we could make them ourselves. We would do it better, safer and quicker. After all, we are a leading paint booth manufacturer and we know what it takes to heat a booth properly. It only made sense to build them ourselves. Continue reading Introducing the Sure-Cure Air Makeup Unit from Standard Tools and Equipment Co.

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