Greenheck BCSW-FRP 15 User Manual

Fiberglass Centrifugal Fans

Model BCSW-FRP

• Belt and Direct Drive • Backward-Curved Wheels

June

2010

Model BCSW-FRP

Greenheck’s model BCSW-FRP backward-curved centrifugal fans are designed to provide reliable and efficient operation for corrosive applications. Our products are manufactured using hand lay-up and chop spray fiberglass construction techniques. Every fiberglass component complies with the ASTM C582 and ASTM D4167 specifications for fiberglass laminates and blowers.

• Fiberglass Reinforced Plastic (FRP) available in sizes 6-73

• Both belt and direct drive arrangements

• Backward-curved single width wheel

• Concentric mount bearings with the industry’s highest cataloged bearing life

• Each BCSW-FRP fan complies with ASTM D4167 and ASTM C582 through the use of a protective layer of “C” veil as standard.

• Coated steel drive frame

• AMCA Spark A Resistant

• AMCA Licensed Air Performance Certified Rating for sizes 15-73. Sizes 6, 8 and 10 are not AMCA Licensed.

• Capacities range from 300 to 150,000 cfm (510 to 255,000 m³/hr)

®®

Greenheck Fan Corporation certifies that the model BSCW-FRP sizes 15-73 fans shown herein are licensed to bear the AMCA seal. Sizes 6, 8, and 10 are not certified. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.

BCSW-FRP Model Number Code:

36 - BCSW - FRP - 4 - CCW - III - BH

Fan Size

6-73

Model

Backward-Curved Single Width Fiberglass Reinforced Plastic

Arrangement

4, 9, 9H, 10

Leading Edge Support

All Greenheck products are supported by the industry’s best product literature, electronic media, and Computer Aided Product Selection (CAPS) program. You’ll also ﬁnd extensive product and Installation, Operation and Maintenance Manuals (IOM) information on the internet.

And of course, you can always count on the personal service and expertise of our national and international representative organization. To locate your nearest Greenheck representative, call 715-359-6171 or visit our web site at www.greenheck.com

Rotation

CW, CCW

Discharge Position

Class

I, II, III, IV

Typical Applications

Greenheck BCSW-FRP centrifugal fans are the fan of choice for use in highly corrosive environments. A few of typical applications are detailed below.

Wastewater Treatment

Wastewater treatment plants produce some of the most corrosive gases that flow through any duct system including hydrogen sulfide, methane, ammonia, chlorine, and many others. In addition to the wastewater components, a number of corrosive chemicals are added to the wastewater at different stages of the process.

Wastewater treatment plant ventilation is split into two categories: general ventilation and odor control. Model BCSW-FRP fans are mainly used in the odor control portion of the ventilation system. Hydrogen sulfide is the most common gas produced by the wastewater. It is highly explosive, so an explosion proof motor should be used, and the fan should be statically grounded by carbon gelling the interior surface of the fan housing.

Other Industries:

• Chemical Process

• Pharmaceutical

• Fertilizer

Semiconductor Manufacturing

There are many toxic and corrosive materials used in the semiconductor fabrication process. A variety of acids are utilized to clean the metals before the chips are assembled. Different acids and corrosive gases are also used in various other stages of the manufacturing process. The most common of these include hydrochloric acid (HCl), hydrofluoric acid (HF), phosphoric acid (H3PO4), and ammonia (NH3).

It is important that all systems in a semiconductor manufacturing facility run continuously, without fail. The hazardous chemicals and acids used pose a health hazard for employees if not vented properly.

FRP fans can last decades without needing to be replaced, and with minimal maintenance requirements, limiting the duration of ventilation downtime.

Other Applications:

• Roasters

• Precipitators

• Plant Ventilation

• Pulp and Paper

• Metal and Metal Finishing

• Fiber Optics/Glass

• Food and Agricultural

• Mining/Minerals Processing

• Digesters

• Reagant Preparation

• Clean Rooms

• Scrubbers for Pollution Control

• Pickling and Galvanizing Lines

Corrosion Resistance

• No steel parts exposed to the airstream.

• Resin specially formulated for resistance to corrosive chemicals.

• Nexus Veil (a synthetic cloth) layering is optional for the most severe applications, such as hydrogen fluoride and strong oxidizers.

• Ultraviolet (UV) resistant top coat — all surfaces exposed to UV rays are stabilized against ultraviolet degradation, suitable for outdoor installation.

Interior

“C” Veil or Nexus

One oz. material

Two oz. chopped strand material

Chopped strand material

Two oz. chopped strand material

“C” Glass Veil

UV Inhibitor Top Coat

ExteriorStandard Lamination Sequence

Corrosion Resistance and Temperature Rating

BCSW-FRP

Chemical

Aluminum

Stainless 316

Temperature

Resistance

°F (°C)

Carbon Steel

Chemical

Aluminum

Stainless 316

Carbon Steel

Resistance: G = Good F = Fair NR = Not Recommended Resistance: G = Good F = Fair NR = Not Recommended Acetic Acid (10%) - Fumes G G F 210° (99°) Hydrobromic Acid (25%) NR NR NR 200° (93°) Ethyl Alcohol G G G 150° (66°) Hydrochloric Acid (15%) NR NR NR 210° (99°) Aluminum Chloride NR G NR 210° (99°) Hypochlorous Acid NR NR NR 90° (32°) Aluminum Fluoride F NR G 90° (32°) Hydrofluosilicic Acid (10%) NR NR - 150° (66°) Ammonium Chloride NR F NR 210° (99°) Hydrofluoric Acid (10%) NR NR NR 100° (38°) Ammonium Sulphate NR G F 210° (99°) Hydrogen Peroxide (30%) G G NR 100° (38°) Barium Chloride NR G F 210° (99°) Lactic Acid F G NR 210° (99°) Barium Hydroxide NR G F 150° (66°) Lithium Chloride NR NR - 210° (99°) Bromine, Wet Gas NR NR NR 90° (32°) Magnesium Chloride NR G F 210° (99°) Calcium Oxide

NR F - 170° (77°) Phosphoric Acid (10%) NR F NR 210° (99°)

(Caustic Lime) Carbon Dioxide (Dry) F G NR 210° (99°) Picric Acid NR F NR 100° (38°) Chlorine Gas (Dry) F F NR 180° (82°) Potassium Carbonate

NR NR - 180° (82°)

(Potash) Chlorine Gas (Moist) NR NR NR 180° (82°) Potassium Chloride NR NR F 210° (99°) Chlorine Water NR NR NR 180° (82°) Potassium Hydroxide

NR NR G 150° (66°)

(Caustic Potash) Chromic Acid (5%) F G NR 100° (38°) Potassium Sulfate NR F F 210° (99°) Citric Acid F G NR 210° (99°) Salt Spray F G NR 210° (99°) Copper Chloride NR NR NR 210° (99°) Sodium Carbonate NR NR NR 180° (82°) Copper Cyanide NR G NR 210° (99°) Sodium Chloride NR F NR 210° (99°) Copper Nitrate NR G NR 210° (99°) Sodium Hydroxide

NR NR F 150° (66°)

(Caustic Soda) Copper Sulphate NR G NR 210° (99°) Stearic F G NR 210° (99°) Ferric Chloride NR NR NR 180° (82°) Sulfuric Acid (25%) NR NR NR 200° (93°) Ferric Sulphate NR F NR 210° (99°) Sulfurous Acid (10%) F G NR 100° (38°) Ferrous Sulphate G G NR 210° (99°) Tannic Acid NR F NR 210° (99°) Fluoboric Acid NR F NR 180° (82°) Tartaric F G NR 210° (99°) Formic Acid (10%) F G NR 180° (82°) Water, Fresh F G NR 220° (104°)

BCSW-FRP fans are rated good for the maximum allowable temperature for each chemical. NOTE: Maximum allowable airstream temperature for BCSW-FRP fans currently offered is 180°F (82°C).

BCSW-FRP

Temperature

Resistance

°F (°C)

Construction Features and Benefits

Housings

BCSW-FRP housings are constructed from corrosion-resistant, fire retardant polyester resin systems. Each BCSW-FRP fan complies with ASTM D4167 and ASTM C582 through the use of a protective layer of “C” veil as standard. The standard housing lamination sequence is shown on page 4.

All hardware in contact with the airstream is made of stainless steel and will be encapsulated in fire retardant polyester to eliminate all sources of corrosion and ensure all components have the same extended service life as the fan itself.

Fan shafts are made of coated carbon steel for fans where the shaft to wheel connection is made outside of the airstream. For shaft to wheel connections made in the airstream, 316 stainless steel is used.

The fan bases are constructed from heavy-gauge steel with a vinyl coating as standard. Epoxy coatings are also available for more severely corrosive environments. Arrangement 10 is standard for smaller fans up to size 25; Arrangement 9 is standard for sizes 30 thru 73.

Wheels

Greenheck BCSW-FRP centrifugal fans have non-overloading backward curved blades. Every wheel is laid up by hand. The blades are strapped to the backplate rather than just glued to ensure a stronger wheel. The

backplate and hub are made of steel and encapsulated in FRP. The minimum peak static efficiency for every wheel is 65%. Every wheel is statically and dynamically balanced twice; the wheel is balanced by itself prior to assembly and then again in the housing. The balancing is conducted in accordance with AMCA 204-06 with a vibration limit of 0.05 in./sec. velocity for direct drive and 0.078 in./sec. velocity for belt drive.

Weatherhoods

BCSW-FRP weatherhoods protect the motor and drive components from rain, moisture, dust, dirt. They are standard on all arrangement 10 fans and optional on arrangement 4.

Belt Guards

BCSW-FRP belt guards are required on all arrangement 9 and 9H fans and are designed for easy access to the belts and pulleys. BCSW-FRP shaft guards are required on all arrangement 9, and 9H fans and are designed to cover the shaft and bearings. All guards can be made to meet OSHA guidelines.

Premium Bearings

The FRP products are manufactured with “Air Handling Quality” self aligning ball and roller bearings. Our standard bearings use concentric lock collars (no set screws) which ensure smooth operation and provide superior grip force between the bearing collar and fan shaft. All bearings are selected for a basic rating fatigue life of L(10) in excess of 80,000 hours. For more critical applications, Greenheck offers bearings with a minimum L(10) life in excess of 200,000 hours. Our bearings include zerk fittings for relubrication.

L(10) Life

Industry Standard 40,000 hrs. 200,000 hrs.

Greenheck Standard 80,000 hrs. 400,000 hrs.

Greenheck Upgrade 200,000 hrs. 1,000,000 hrs.

L(10) life implies 90% reliability or 10% failure rate after the stated hours. L(50) life implies 50% reliability or 50% failure rate after the stated hours.

Equal to L(50) or

Average Life

BCSW-FRP

Inlet Cone

Access Door

with Gasket

Outlet Flange

Base/Housing Foot Angle (4)

Housing

Wheel

Gasket

Backplate

Shaft Seal

Shaft Guard

Bearings

Shaft

Motor Pulley

Adjustable Motor

Slide Base

Belt

Shaft

Pulley

Belt

Guard

Belt Guard

Cover

Vibration Isolators and Structural Bases

Greenheck offers a complete package of vibration isolators to reduce transmitted vibrations.

Vibration isolator options include neoprene, housed spring and restrained spring isolators. Housed and restrained springs are only available on sizes 30-73.

Isolator Type Application

Housed Spring

Restrained Spring

Rubber-in-Shear

Permits radial and axial vibration dampening where less motion can be tolerated.

Used where large weight changes or high wind loads occur. Upward vertical movement is prevented by mechanical restraints.

Neoprene isolators highly effective for relatively small fans with RPMs of 1800 and over.

Accessories

Inlet and Outlet Flanges

A slip ﬁt connection on the inlet and an unpunched ﬂange on the outlet are standard on all BCSW-FRP sizes and arrangements. An unpunched ﬂange is also an option for the inlet.

Companion Flanges

Punched companion ﬂanges are available for both the inlet and outlet for all sizes.

Discharge Transitions

Integral discharge transitions are available when a transition from rectangular discharge to round duct is needed. Integral transitions are available up to size44. For sizes 48 to 73, a separate bolt-on transition is available.

Access Doors

Bolted or hinged (quick opening) access doors are available to provide access for inspection and cleaning. Raised access doors are also available for use with the integral acoustical insulation.

Shaft Seals

The standard seal is a Teﬂon® plate. Stufﬁng box type seals or mechanical seals are available for more severe requirements.

Extended Life Bearing

Extended life bearings are selected for a basic fatigue life L(10) rating per ABMA Standards in excess of 200,000 hours at the maximum RPM for each pressure class. L(10) is the life associated with 90% statistical reliability of a bearing.

Extended Lubrication Lines

Flexible rubber tubing extending from the bearings to grease ﬁttings at a convenient location on the drive frame are available for all FRP fans. Stainless steel extended lubrication lines are also available for highly corrosive applications.

Disconnect Switches

Greenheck offers a wide variety of NEMA rated disconnect switches. Switches are shipped loose for ﬁeld installation.

Drain Connection

A FRP coupling drain connection is located at the bottom of the fan housing to drain any water or other liquids that may accumulate within the fan.

Drive Frame Coatings

There are three types of coatings available for the fan drive frame: Types A, B, and C. Type A is a hand brushed enamel ﬁnish for the least corrosive applications. Type B is a sandblasted and epoxy coating for slightly more corrosive applications. Type C is a sandblasted and double epoxy coating for the most severely corrosive applications.

Stainless Steel Shafts

Stainless steel shafts are available for highly corrosive applications.

Integral Acoustical Insulation

Integral acoustical insulation is built into the fan by encasing 2 inches of insulation in ﬁberglass. This integral insulation allows for normal access to fan components while lowering the sound levels.

Carbon Gel

Every FRP surface in contact with airstream is graphite-impregnated to eliminate static buildup within the fan. A grounding lug is located externally. Used when explosive gases are in the airstream.

Nexus Veil

Nexus Veil is a type of synthetic cloth used to obtain a longer service life in aggressive environments. Necessary for hydrogen ﬂuoride service and in environments containing strong oxidizers.

Configurations

Fan

Isolation Base

Motor position and fan rotation is determined from drive side

FAN

BCSWFRP-36

Arrangement 10* — Belt Drive

Sizes 6-25

• Compact design providing space savings.

• Bearings are located out of the airstream.

• Motor is mounted beneath the drive frame.

• Includes easy-to-remove weatherhood.

Arrangement 9H — Belt Drive

Sizes 30-73

• Bearings are located out of the airstream.

• Motor is mounted horizontally on the drive frame for easy accessibility.

• Belt guard and shaft guard included.

Arrangement 9 — Belt Drive

Sizes 30-73

• Easy access to motors mounted on drive frame.

• Bearings are located out of the airstream.

• Standard motor position is on the left side of the drive frame for CW rotation and on the right side for CCW rotation.

• Belt guard and shaft guard is included.

Arrangement 4 — Direct Drive

Sizes 6-44

• Available with wheel and housing modiﬁcations for speciﬁc performance.

• Provides compact design with low maintenance.

Discharge Positions and Rotatable Housings

All BCSW-FRP centrifugal fans are available with clockwise (CW) or counterclockwise (CCW) rotation in ﬁve standard discharge positions. Rotatable housings are standard on fan sizes 25 and less; arrangements 10 and 4.

Class of Construction

Fan Class refers to a construction level designed to handle a given fan outlet velocity and pressure. As the fan performance requirements increase, the fan construction (material gauge, shaft diameter, motor size) must also increase to physically handle the new work load.

Centrifugal products are available in Class I, II, III, or IV, with Class I being the lightest construction and Class IV having the heaviest construction and performance capacity.

A typical fan curve is shown with shaded class limits.

CW THCW BH CW TAUCW UBCW BAU CCW THCCW BH CCW TAUCCW UBCCW BAU

Static Pressure (Pa x 100)

7½

Static Pressure (in. wg)

1½

0 5 10 15 20 25 30 35 40

0 10 20 30 40 50 60

750

625

500

50% WOV

1360

1275

1175

1099

1000

879

Volume (cfm x 1000)

Volume (m /hr x 1000)

60% WOV

1550

1450

Constant RPM

Constant HP

% WOV

Density 0.075 lb/ft

Density 1.2 kg/m

70% WOV

1625

80% WOV

90% WOV

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