Explosion Proof Exhaust Fan, and Explosion Proof Fans

AMCA Types A, B or C, spark resistant construction is available on every fan or blower model manufactured by Cincinnati Fan, with some limitations.  Heavier construction gauges to “contain events” and “leak resistant” construction to minimize any leakage are options we can also manufacture for you.

Our Model PB Series, Cast Aluminum Pressure Blowers, come standard with AMCA Type B spark resistant construction and ship within 10 working days.They can very easily be manufactured with AMCA Type A construction and shipped within 10-15 working days.  Our Model LM and LMF Series Volume Blowers come standard with AMCA Type C construction and ship within 10 working days.

The term “Explosion Proof Exhaust Fans” must be quantified as to its true definition.  There is no such thing as “Explosion Proof” either in exhaust fans, blowers or motors.  Fans can be manufactured to be “Spark and/or Explosion Resistant”.  The Air Movement and Conditioning Association (AMCA) has three classifications for “spark resistant” fans and blowers. These are defined as AMCA Types A, B or C spark resistant construction.  Type A construction requires that all materials of the fan or blower that are “in contact with the air stream” be made of spark resistant nonferrous material such as aluminum or brass.  Type B construction requires a nonferrous wheel and a rubbing ring around the hole where the fan or motor shaft enters the fan or blower housing.  Type C construction requires a nonferrous plate on both sides of the inside of the fan or blower housing.  The type of construction you require is dependant on the ambient location and/or application severity your fan will be subjected to.  You need to be very careful in selecting which type of spark resistant construction you require and specify.  If you are not knowledgeable in this area, you should to hire a consultant that is.

Explosion Proof motors are not guaranteed to be explosion proof either.  They are designed so “if there is an explosion within the motor, the motor design will contain the explosion within the motor and not allow it to go to atmosphere”.  Explosion proof motors are designed or rated by Classes, Groups and “T” Codes for the atmospheres they will be operating in.  If an explosion proof motor is improperly selected for the actual ambient atmosphere it is operating in, it can cause an explosion.  Again, if you are not knowledgeable in specifying what type of explosion proof motor you require for your application, rely on someone that is trained in this area.

NOTE:
For liability reasons, fan and/or motor manufacturers will not specify what types of fan or motor construction you may require for your application(s).  They will quote to your specifications.  If applied properly, your fan, blower and motor will be “spark and/or explosion resistant”.


APPLICATIONS:

The most common applications for “Spark and/or Explosion Resistant Fans or Blowers” are:

• Paint Spray Booth exhaust
• Grain storage bins or silos
• Engine room exhaust
• Chemical and paint storage room ventilation
• Ammunition manufacturing and storage rooms
• Refineries, fuel storage facilities and gas stations
• Explosive and/or flammable liquid storage cabinets.
• Dust collection systems.
  

BENEFITS

The benefits of Cincinnati Fan Spark and/or Explosion Resistant Fans and Blowers are:

• Model PB Blowers are standard with cast aluminum housing and wheels, therefore they are standard with AMCA Type B spark resistant construction. Faster delivery time than other fan manufacturers.
• Adding AMCA Type A spark resistant construction to our Model PB Blowers is an easy option for us. Less expensive than other fan manufacturers.
• Our Models SPB, LM and LMF are standard with AMCA Type C spark resistance. Changing them to AMCA Type B construction is also very easy. Less expensive and quicker delivery than other fan manufacturers.
• Almost all of our Axial Fans come standard with cast aluminum propellers.
  Ideal for paint spray booths and applications that require spark resistant construction.
• We also offer all aluminum construction for almost our complete line of fans and blowers. This type of construction is being built in our shop almost weekly. Quantity and frequency equal lower costs and quicker deliveries.
• We also offer a RUSH SHIP program for our Models PB, SPB, LM and LMF Blowers, with most accessories, that ship in 5 working days.
  Unbeatable in the fan industry.

The design steps are critical for the proper selection and construction of a spark and/or explosion resistant fan or blower.  Cincinnati Fan has over 170 experienced sales engineers across the U.S.A. and Canada to help you with your selection.  Call our sales office for your area.  They, most likely, have already sold fans and blowers for your application.

We are " The OEM and Industrial Air Handling Specialists".  Let us prove it to you.