Explosion proof fans or hazardous location fans and blowers are an essential part of a warehouse, plant, mill, spray booth, tank, confined space or any other area where ignitable fumes, gases or dust may be present. Read More. We carry the largest collection of commercial and industrial explosion proof fans and blowers for hazardous locations in the industry. We offer brands such as Canarm Ltd. What determines if an area has a Hazardous Location classification?
Any area that poses a risk for a fire or an explosion, due to the gases, vapors, combustible dust, flammable liquids or ignitable fibers in the atmosphere carries the classification of a Hazardous Location. Any time electrical equipment is used in this type of an area, there runs the risk of a fire or explosion occurring.
Typically aluminum is the non-ferrous material used here. Utilizes only a non-ferrous rubbing plate that is typically constructed of aluminum but can be constructed out of the aforementioned alternative materials when appropriate. Class determines the nature of the hazardous material properties in the given atmosphere. Class does not determine whether or not there are sufficient enough amounts of any of these above materials in the atmosphere to cause an ignition or explosion.
Group is the determination of the type of hazardous material present in the surround atmosphere. Gases include hydrogen, butadiene, ethylene oxide, propylene oxide, and acrolein. Gases include ethyl ether, ethylene, acetaldehyde and cyclopropane. Gases include acetone, ammonia, benzene, butane, ethanol, gasoline, methane, natural gas, naphtha and propane. Dusts such as flour, starch, grain, wood, plastic, and chemical are present in the atmosphere.
Home Explosion Proof Fans and Blowers. Please call Filters Explosion Proof Fans and Blowers. This section is regarding Classifications, Divisions and Groups: 1.
Read less. Explosion Proof Wall Exhaust Fans. Explosion Proof Roof Exhaust Fans. Explosion Proof Wall Supply Fans. Explosion Proof Roof Supply Fans. Explosion Proof Air Circulator Fans.
Dust Collector Captures Exhaust from Sandblasting Operation
Explosion Proof Ceiling Mounted Fans. Explosion Proof Specialty Lighting. Explosion Proof Portable Cooling Fans. Explosion Proof Evaporative Cooler Fans.Greenheck is the leading supplier of air movement, control and conditioning equipment including fans.
You will find our fans in every type of commercial, institutional, and industrial buildings. Applications range from comfort ventilation to manufacturing processes.
Toggle navigation Toggle navigation. Products Air Movement Fans. Fans for every commercial, industrial and institutional application. Roof curb mounted fan and ventilator products supply and exhaust applications for commercial, institutional and industrial installations. Designed for inline installations and offering a wide performance range. Fans are used for clean air, sound sensitive, industrial or grease-laden exhaust air applications.
Includes both direct and belt drive fans with various impeller types, suitable for in-wall mounted applications. Ductless design uses jet fans to dilute and remove contaminants and control smoke. These move air towards exhaust areas. VIEW Circulators. Ceiling exhaust fans are ideal for clean air applications such as bathroom and general exhaust. Low flow and high-pressure air movement for removing hot air, moisture, fumes and small, lightweight particles such as dust, wood chips, and paper trimmings.
VIEW Blowers. Fan systems designed and engineered to remove hazardous or noxious fumes meeting laboratory requirements. Exhaust effluents have high discharge velocities and plume height. Pre-engineered, centrifugal exhaust systems designed to safely remove and disperse contaminated air in commercial, institutional or industrial applications.
Compact and economical, plenum fans are designed to operate individually or as a multi-fan array in air handling and pressurized plenum applications. Roof support structures for fans and ventilators on flat, pitched, or ridged roofs. Make-up Air.
Indoor Air Handling Units. Dedicated Outdoor Air Systems.A steel fabrication facility had a dedicated bay for sandblasting and painting that required capturing and filtering smoke, fumes, and dust. The sandblast material was an abrasive silica that would pulverize upon contact with the metal surface and create thousands of fine dust particles that would cloudy the air and fill the room.
Monroe designed and installed a 6, CFM Cartridge Dust Collector to capture the exhaust from the sandblast and painting bay. The unit contained long life pleated fabric filters, a AMCA rated fan, a dust collection hopper with slide gate, a storage drum, and a compressed air chamber, as well as all necessary controls and filter monitoring equipment.
The filters in the collector were mounted in a vertical position to ensure that when the collected dust was pulsed from the cartridges it would fall to the bottom of the collector. The unit was installed outdoors with ductwork running from the interior of the sandblast bay outside to the collector itself.
The unit provided the necessary suction required to exhaust the sandblast operation and filter the airborne dust. Download PDF. Learn More: Dust Collectors.Simple and cheap sandblasting booth
Air Dust Collector for Sandblasting. Air Pollution Control. Related Posts. Air Carbon Adsorber for Odor Control. Air Glass Resin Scrubbing System.Downblast Roof Exhaust Fans include both direct drive and belt drive options. Direct drive for short, low resistance duct work with average air volume requirements.
Belt drive for average resistance ductwork and high volume requirements. High pressure option for long ductwork with high resistance. Exhaust flows out and downward toward the roof surface. Suitable for roof-mount applications exhausting relatively clean air. All quotes include fan and roof curb submittals for architectural review and approval. Curbs for built-up roofs also available. Curbs to include damper shelves and vibration isolation rails per project specifications.
Fans, curbs and louvers can include a custom finish to match the building color. The model G is a direct drive, spun aluminum fan, designed for roof mounting on a curb for general, clean air exhaust applications. Units feature a spun aluminum housing and have certifications including seismic, high wind and hurricane. Use this belt drive centrifugal roof exhaust fan for general clean air applications where the air discharge is downward, toward the roof surface.
The GB features a spun aluminum housing. Model LD is a direct drive, fabra hood-style fan, intended for roof-mounted applications exhausting relatively clean air, where height and aesthetics are a concern. Units feature a backward-inclined aluminum wheel, with a low silhouette housing. Model LB is a belt drive, fabra hood-style fan, designed for roof mounting in clean air exhaust applications, where height and aesthetics are a concern.
The units feature a backward-inclined aluminum wheel, with a low silhouette housing. Model Vari-Green Drive to be a factory mounted and wired variable frequency drive compatible with induction motors. Drive shall be factory programmed to match the characteristics of the fan and motor on which it is installed.
Operation shall be controlled by an on-board dial, V input signal, mA input signal, or other Vari-Green Controls. System shall include appropriate terminal connections for a 24VDC motorized backdraft damper. Drive shall be equipped to mitigate harmonics to levels in compliance with IEEE without the use of external reactors or filter. Internal circuitry shall be UL recognized and accept 3 phase input at voltage ranges of V or V. Drive status communicated through LED indication for power, run, and fault.
System shall include appropriate terminal connections for a 24VDC motorized backdraft damper and control power, 4 digital inputs, 2 digital outputs, and Bluetooth connectivity with a companion app for mobile devices. Motor to be an electronic commutation EC motor specifically designed for fan applications. AC induction type motors are not acceptable. Motors shall be permanently lubricated with heavy-duty ball bearings to match the fan load and prewired to the specific voltage and phase.
Internal motor circuitry shall convert AC power supplied to the fan to DC power to operate the motor. Speed shall be controlled by either a potentiometer dial mounted on the motor or by a VDC signal. Control shall include a Proportional Integral Derivative PID feedback loop and shall have labeled terminal strips for easy wiring.
Control to be a packaged Indoor Air Quality control designed to regulate fan speed based on level of VOC concentration in a space.
Fan shall be direct drive including an electronic commutation EC Vari-Green motor. Control to be a packaged constant pressure control designed to regulate fan speed based on demand.
Control shall include a Proportional Integral Derivative PID feedback loop and shall have all components prewired to labeled terminal strips for easy wiring. System shall include the appropriate pressure tap and preset pressure transducer.
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Indoor installations shall include pressure tap duct or room and control box with integral pressure transducer. Outdoor installations shall include duct pressure tap, pressure transducer, and control box.
Control box shall be pre wired and in a NEMA-3R weather tight enclosure for mounting outdoors near the fans location.When ventilation is used as an engineering control method, the system shall be installed and operated according to the requirements of this section. Such exhaust systems shall be so designed that dusts, fumes, mists, vapors, or gases are not drawn through the work area of employees. The exhaust system shall be in operation continually during all operations which it is designed to serve.
If the employee remains in the contaminated zone, the system shall continue to operate after the cessation of said operations, the length of time to depend upon the individual circumstances and effectiveness of the general ventilation system.
Since dust capable of causing disability is, according to the best medical opinion, of microscopic size, tending to remain for hours in suspension in still air, it is essential that the exhaust system be continued in operation for a time after the work process or equipment served by the same shall have ceased, in order to ensure the removal of the harmful elements to the required extent.
For the same reason, employees wearing respiratory equipment should not remove same immediately until the atmosphere seems clear. Collecting systems which return air to work area may be used if concentrations which accumulate in the work area air do not result in harmful exposure to employees. Dust and refuse discharged from an exhaust system shall be disposed of in such a manner that it will not result in harmful exposure to employees.
Abrasive-blasting respirator. A respirator constructed so that it covers the wearer's head, neck, and shoulders to protect the wearer from rebounding abrasive. Abrasives and the surface coatings on the materials blasted are shattered and pulverized during blasting operations and the dust formed will contain particles of respirable size. The composition and toxicity of the dust from these sources shall be considered in making an evaluation of the potential health hazards.
The concentration of respirable dust or fume in the breathing zone of the abrasive-blasting operator or any other worker shall be kept below the levels specified in Organic abrasives which are combustible shall be used only in automatic systems.
Where flammable or explosive dust mixtures may be present, the construction of the equipment, including the exhaust system and all electric wiring, shall conform to the requirements of American National Standard Installation of Blower and Exhaust Systems for Dust, Stock, and Vapor Removal or Conveying, Z The blast nozzle shall be bonded and grounded to prevent the build up of static charges.
Where flammable or explosive dust mixtures may be present, the abrasive blasting enclosure, the ducts, and the dust collector shall be constructed with loose panels or explosion venting areas, located on sides away from any occupied area, to provide for pressure relief in case of explosion, following the principles set forth in the National Fire Protection Association Explosion venting Guide.
NFPA Blast-cleaning enclosures shall be exhaust ventilated in such a way that a continuous inward flow of air will be maintained at all openings in the enclosure during the blasting operation. All air inlets and access openings shall be baffled or so arranged that by the combination of inward air flow and baffling the escape of abrasive or dust particles into an adjacent work area will be minimized and visible spurts of dust will not be observed. The rate of exhaust shall be sufficient to provide prompt clearance of the dust-laden air within the enclosure after the cessation of blasting.
Before the enclosure is opened, the blast shall be turned off and the exhaust system shall be run for a sufficient period of time to remove the dusty air within the enclosure. Safety glass protected by screening shall be used in observation windows, where hard deep-cutting abrasives are used. Slit abrasive-resistant baffles shall be installed in multiple sets at all small access openings where dust might escape, and shall be inspected regularly and replaced when needed.
Door on blast-cleaning rooms shall be operable from both inside and outside, except that where there is a small operator access door, the large work access door may be closed or opened from the outside only. The construction, installation, inspection, and maintenance of exhaust systems shall conform to the principles and requirements set forth in American National Standard Fundamentals Governing the Design and Operation of Local Exhaust Systems, Z9.
The static pressure drop at the exhaust ducts leading from the equipment shall be checked when the installation is completed and periodically thereafter to assure continued satisfactory operation.
Whenever an appreciable change in the pressure drop indicates a partial blockage, the system shall be cleaned and returned to normal operating condition. In installation where the abrasive is recirculated, the exhaust ventilation system for the blasting enclosure shall not be relied upon for the removal of fines from the spent abrasive instead of an abrasive separator.
An abrasive separator shall be provided for the purpose. The air exhausted from blast-cleaning equipment shall be discharged through dust collecting equipment.
Dust collectors shall be set up so that the accumulated dust can be emptied and removed without contaminating other working areas. Employers must use only respirators approved by NIOSH under 42 CFR part 84 for protecting employees from dusts produced during abrasive-blasting operations.This four-bladed vaneaxial fan is called a Jet Fan because a highvelocity jet of compressed air is ejected from the trailing edge of the blade, as shown in the diagram.
This results in the forward rotation of the fan wheel just like a jet plane is pushed forward by the high-velocity jet ejected from the rear of the jet engine. We stock the most complete line of corrosion control equipment and supplies in the Southwest.
Conflict Materials Statement. Corrosion Control Equipment. Use for general ventilation in any location where compressed air is available. Use as blower or exhauster. Suited for ventilation of tanks, process vessels, or other confined areas for the removal of hazardous fumes or contaminated air from welding, sandblasting and other operations. Rated operating pressure PSI.
Design allows for lower RPMs while still moving more air. Bearings are packed with a hi-tech synthetic lubricant for longer life. Propeller precision balanced by removing material from end of blades.
Related Articles and Resources. This equipment has a 1 Year Manufacturer Warranty to be free from defects in materials and workmanship, under normal use and service, for a period of 12 months from date of shipment. Download the warranty flyer here. How do I know what size fan to order? What equipment is under the hood? How long is the duct from hood to fan?
Once you have gathered this information, email it to us and we will be able to identify the correct fan. You can also call us with the information if that is easier. When sizing a new exhaust fan for replacement, it is important to know the base size you need. For a proper fit, make sure that the new fan base is larger than the existing curb.
Are the pulleys adjustable? There is an adjustable sheave on the motor and two hex-set screws on the pulley. One screw secures the pulley to the shaft while the other allows the two halves to be adjusted closer together or further apart.
When adjusting, you must retighten the hex-set screws on a flat side of the pulley base. You increase the fan speed by adjusting the halves closer together. Adjusting them further apart will slow the fan speed down. Double grove pulleys must be turned the same number of turns or the belts will not seat properly in the groves. After adjusting pulleys, it is very important to check motor amperage.
How do you replace a pulley? Loosening the set screw will allow you to easily remove the single groove pulleys.