vent/utility set, blower accessories product guide · vent sets / utility sets, blowers and...

VENT/UTILITY SET, BLOWER ACCESSORIES | PRODUCT GUIDE

OverviewVent Sets / Utility Sets, Blowers and Material Handlers are installed in numerous commercial and industrial systems. These systems range from general ventilation to complex process ventilation. Additional requirements can include seismic or high wind certification.

These specialized applications and systems can require the addition of accessories. Some accessories are only available for specific units and arrangements.

This document provides an overview of the available accessories. Refer to product guides, submittals and IOM’s for more information.

Introduction and Information

VENT/UTILITY SET, BLOWER ACCESSORIES

AMCA Spark Resistant Construction When selecting a product with spark resistant construction, Compute-A-Fan will pre-select the needed accessories and materials in order to comply with AMCA 99 Spark Resistant Construction Guidelines. The following are generalized requirements for each level:

AMCA Type A Construction* (Most Stringent)All parts of the fan in contact with the air or gas being handled shall be made of a nonferrous material.

AMCA Type B ConstructionThe fan shall have a nonferrous impeller and nonferrous ring about the opening through which the shaft passes.

AMCA Type C Construction (Least Stringent)The fan shall be so constructed that a shift of the impeller or shaft will not permit two ferrous parts of the fan to rub or strike.

Note: No bearings, drive components, or electrical devices shall be placed in the air or gas stream unless they are constructed or enclosed in such a manner that failure of that component cannot ignite the surrounding gas stream.

Associated ProductsArrangement 1, 2, 4, 8, 9 & 10 CA/CF, CPA*, CPA-A*, CPS, CPS-A, CPV, Material Handlers *Standard construction for CPA & CPA-A

Notes• Reduce Temperature Range

5.5ºF for every degree ambient temperature is above 100ºF

• Fan speed limits are reduced for elevated airstream temperatures. See below


High Temperature Construction

Temperature Range

Fan Arrangement Construction Requirements

-20ºF to 80ºF All • Standard Construction*

181ºF to 230ºF 1,2,8,9,10 • Standard Construction*

3 • High Temperature Bearings

231ºF to 300ºF1,2,8,9,10 • High Temperature Paint*

3 • High Temperature Bearings• High Temperature Paint

301ºF to 500ºF 1,2,8,9,10

• High Temperature Paint• Special Louvered Weather Cover

(when required)• Shaft Cooler• Steel Wheel & Steel Housing• Motor Heat Shield (Arr, 2, 9, 10 only)

501ºF to 800ºF 1,2,8,9

• High Temp Paint• Special Louvered Weather Cover

(when required)• Shaft Cooler• Steel Wheel & Steel Housing• Motor Heat Shield (Arr, 2, 9, only)

800ºF+ 1, 8 • Consult factory for details

High Temperature Construction Requirements

Material Airstream Temp

Speed Limit

Factor

Carbon Steel

70 1.00

200 0.98

300 0.96

400 0.94

500 0.91

600 0.87

700 0.81

800 0.75

Aluminum 70 1.00

200 0.93

300 0.79*Material Handlers may require Heavy Duty construction base on the point of operation


Applications Construction and Certification

UL Restaurant ExhaustUnits are available with UL Restaurant Exhaust Listing for either 300ºF or 500ºF

In addition to the temperature construction requirements shown on page 3, units with UL Restaurant Exhaust Listing require the following accessories.• Access Door (Page 12)• Drain (Page 12)

Optional Accessories available:• UL Punched Flanged Inlet (Page 15)• UL Punched Discharge Flange (Page 16)• UL Punched Companion Flanges (Pages 15 &

16)Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA*, CPA-A*, CPS, CPS-A, CPV**300º Listing only

UL Smoke ControlUnit selected with UL Power Ventilators for Smoke Control Systems require:• Motor Heat Shield (Page 21) • Steel Wheel

Associated ProductsArrangement 1, 8, 9 & 10 CA, CA-4, CF; CF-4; Single Wide; CPS, CPS-A

Hurricane / High Wind • Models tested per Miami-Dade County’s

Testing Application Standards:• TAS-201• TAS-202• TAS-203

• Products have the following approvals:• NOA (Miami-Dade Notice of

Acceptance)• Florida Building Commission

More detailed information is available in the High Wind and Hurricane Fans Brochure

Associated ProductsCPFB, CPS, CPS-A, CPV

Seismic (OSHPD Pre-Approval) • Models are tested in accordance with the

criteria specified in ICC-ES AC156. • Tests results were accepted by the California

Office of Statewide Health Planning and Development.

• All units are approved with:• Steel housed units • Isolation rails.

More detailed information is available in the Vibration Isolation and Seismic Certification Brochures

Associated ProductsArrangement 9 CA, CF Single Wide (Sizes 120-540); CPS, CPS-A, CPV

AMCA Class UpgradeIn Compute-A-Fan units can be selected with an upgraded AMCA Class*. Considerations are: • Higher maximum RPM• Larger shaft and bearings• At higher classes, arrangements may be

limited

Associated ProductsCA, CA-4, CF, CF-4, Single and Double Wide; CPS, CPS-A *Material Handler can be upgraded from Standard to Heavy Duty Construction

• Spherical roller bearing are typically arranged in minimum two rows.

• Lower speed, higher horsepower application

Features and Benefits• Standard for Cook products• Set screws attach the bearing to the fan shaft

via fastener points embedding into the fan shaft material

• Cook’s Standard Bearing Life L-10 40,000 hours

• Cast housing resists flexing during installation and under operational loads

• Re-lubrication extends the life of the bearing

Bearing Information


CONCENTRIC LOCKING SET SCREW

Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers

Features and Benefits• Concentric locking applies

clamp forces 360º around the fan shaft

• Cook’s Standard Bearing Life L-10 40,000 hours

• Cast housing • Re-lubrication bearing

Features and Benefits• Split housing allows replacement of bearing

insert only.• Available for both ball and roller bearings.• Includes internal concentric locking collar• Bearing Life in excess of L-10 40,000 hours• Cast housing resists flexing during installation

and under operational loads• Re-lubrication extends the life of the bearing

SPLIT PILLOW BLOCK BALL BEARING ROLLER BEARING

• Typically single roll for ball bearing set into a race.

• Higher speed application


Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers

What is bearing life and what does it mean?Bearing life is a statistical calculation based on a percentage of failures that occurred in laboratory conditions. In theselaboratory conditions, controlled loads, specific speeds and proper lubrication are applied to sets of bearings. These bearings are run and timed until fatigue failure occurred. All bearings require lubrication and re-lubrication during their life until. • L-10 life means that 10% of a given set of bearings at a calculated speed and load will fail. • L-50 life is a statistical estimate of when 50% of a given set of bearings at a calculated speed and load will fail. • L-10 hours x 5 = L-50 hours.• Cook standard design is for a minimum of L-10, 40,000 or L-50, 200,000 hours at maximum catalog RPM. • At a specific point of operation (RPM / Motor Hp) the actual bearing life may greatly exceed this advertised life.

Bearing Information


Time Period 24 hr / Day 24 hr / Day 16 hr / Day 16 hr / Day 12 hr / Day 8 hr / DayExample Days / Week 5 Days / Week 7 Days / Week 5 Days / Week 5 Days / Week 5 Days / WeekL-10 40,000 Hours 4.6 Years 6.4 Years 6.9 Years 9.6 Years 12.8 Years 19.2 YearsL-50 200,000 Hours 22.8 Years 32 Years 34 Years 48 Years 64 Years 96 Years

EXTENDED BEARING LIFEFeatures and Benefits• Based on application requirements,

extended bearing life can provide the necessary design life for a system

• Bearing type and size are factory calculated to meet the life at maximum catalog RPM and motor horsepower.L-10

200K

HIGH TEMPERATURE BEARINGS /HIGH TEMPERATURE GREASEFeatures and Benefits• High temperature bearings

• Bearing operation temperature 230° and above• Bearings have greater internal clearance to allow for thermal expansion• Bearings are preloaded by the bearing manufacturer with high temperature

grease . High temperature grease resists thermal breakdown• High temperature grease (only)

• Used in standard bearings • For temperature above 180° but below the minimum temperature for high

temperature bearings


L-1080K

Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPS, CPS-A, Material Handlers


Shaft and Bearings

Features and Benefits• Cast aluminum construction• Provided as temperature

protection for bearings• Also known as Heat Slinger• See Page 3 for required use

SHAFT COOLER

RUB RING

SHAFT SEAL

Features and Benefits• Provide quick and convenient way to

lubricate bearings while the fan is operating

• No need to shut fan down• More convenient access• Available in plastic or optional copper

EXTENDED LUBE LINES

Features and Benefits• Prevents shaft and wheel from

contacting fan housing• Aluminum construction• See Page 2 for AMCA Spark

Resistant Construction

Features and Benefits• Reduces air leakage around fan

shaft in high discharge pressure applications

• Constructed of aluminum with standard gasket material Aramid fiber with NBR binder.

• Optional gasket material, PTFE commonly known by its brand name, Teflon


Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A CPS, CPS-A, CPV, Material Handlers

Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPFB, CPS, CPS-A, CPV, Material Handlers

Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPFB, CPS, CPS-A, CPV, Material Handlers

Rub Ring & Shaft Seal

Extended Lube Lines

Shaft Cooler


Shaft and Belts

STAINLESS STEEL SHAFT

Stainless Steel Shaft

RT400015-20 HP

Features and Benefits• Maintains constant tension on the drive

belt• Belts run 15-20° F cooler increasing

belt life approximately 50%• Reduces start up and maintenance

costs• Simplifies and speeds belt replacement

• Requires no skill and no tools

AUTOMATIC BELT TENSIONER

Associated ProductsArrangement 10, CA, CF, Single Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV; Arrangement 10 Material Handlers

RT30005-10 HP

RT10001/6-3 HP

Features and Benefits• Available in 304 or 316 alloy• Provides a higher level of

corrosion resistance compared to standard shaft coating

Associated ProductsArrangement 1, 2, 3, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA*, CPA-A*, CPFB, CPS, CPS-A, CPV, Material Handlers*Standard construction for CPA & CPA-A

Features and Benefits• Factory supplied replacement belts• Reduces down-time sourcing

replacement• Belts are the same type and size as

originally specified and as installed on the unit

SPARE BELTS

Associated ProductsArrangement 1, 2, 3, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers

Automatic Belt Tensioner

Spare Belts


Inlet, Outlet and Belt Guards

INLET GUARDFeatures and Benefits• Provides a degree of protection against personnel access• Shields belts from weather, UV light and other factors that

may deteriorate the belts • Available in steel and aluminum construction• Optional High Temperature construction

Belt Guard

High Temperature construction


Features and Benefits• Provides protection for personnel and prevents intake

of debris in non-ducted applications• Available in three styles

• Spiral Inlet, material plated steel• Aluminum Inlet Safety Screen• Impact (Hurricane)*

• Factory installed*Required for NOA units installed in non-ducted applications

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide*; Arrangement CPA, CPA-A, CPF, CPS, CPS-A, CPV*Double wide units are shipped with 2

Features and Benefits• Provides protection for personnel and prevents debris from

entering the discharge of the unit in non-ducted applications• Welded construction and factory installed • Available in three styles

• Lorenized expanded steel• Aluminum expanded metal• Impact (Hurricane)*

*Required for NOA units installed in non-ducted applications

OUTLET GUARD

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement CPA, CPA-A, CPF, CPS, CPS-A, CPV

BELT GUARD


OSHA Belt Guard and Weather Cover

OSHA BELT GUARD / WEATHER COVERFeatures and Benefits• Provides a degree of protection against

personnel access that meet OSHA requirements• Shields belts from weather, UV light and other

factors that may deteriorate the belts • Optional available

• High Temperature construction (See page 3 for details)

• With Access Door• High Temperature with Access Door• Impact (Hurricane) construction**Required to meet TAS-201, see page 4

OSHA Belt Guard / Weather Cover

High Temperature construction


Impact construction

OSHA Belt Guard / Weather Cover

with Access Door


OSHA Belt Guard and Weather Cover

BELT GUARD

Features and Benefits• Provides a degree of

protection against personnel access

• Shields the belt from weather, UV light and other facots that may deteriorate the belts

• Split design allows for access without removal of supports

• Available in steel or aluminum construction

• Solid or expanded metal* designs

*Standard for arrangement 3

Belt Guard

Motor Cover

Shaft-Bearing Guard

High Temperature Construction

Associated ProductsArrangement 1, 2, 3, & 9 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement 1 & 9 Material Handlers

SHAFT-BEARING GUARD

Features and Benefits• Provides a degree of

protection against personnel access

• When installed with Belt Guard provide OHSA level of protection

• Available in steel or aluminum construction

• Optional High Temperature Construction available

Associated ProductsArrangement 1 & 9 CA, CA-4, CF, CF-4 Single Wide; Arrangement 1 & 9 Material Handlers

Features and Benefits• Provides additional

protection for motor• When outdoor motor cover

is required for ODP motors• Cover is vented to dissipate

heat• Available in steel or

aluminum construction• Optional High Temperature

Construction available

MOTOR COVER

Associated ProductsArrangement 1*, 3*, & 9 CA, CA-4, CF, CF-4 Single Wide & Double Wide; Arrangement 1* & 9 Material Handlers*Motor Cover designed for use with Cook isolation base


Cleaning and Collection

ACCESS DOOR

Features and Benefits• Provides access for cleaning and inspection of

wheel• Bolted or Hinged styles• Constructed from the same material as fan

housing• Gasketed to minimize leakage

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPF, CPS, CPS-A, CPV, Material Handler

Features and Benefits• Provides for collection of grease• Removable for cleaning• Maximum capacity 1 liter per NFPA 96

code requirements.• Welded aluminum construction• Internal water baffle • Shipped loose for field mounting

GREASE TROUGH – HANGING

Associated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A, CPS, CPS-A, CPV

GREASE TERMINATOR

Features and Benefits• Provides for collection of grease• Canister made from high impact plastic.• Canister is clear for monitoring grease amounts• Fill fibers formulated to absorbed grease while

repelling water• Shipped loose for field mounting to housing

drainAssociated ProductsArrangement 1, 2, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A, CPS, CPS-A, CPV

Drain

Features and Benefits• Provides for a threaded connection for

field installed piping• ¾ inch NPT pipe coupling fully welded

at lowest point on the unit

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPF, CPS, CPS-A, CPV, Material Handler

DRAIN


Split Housing

SPLIT HOUSING

Features and Benefits• Allows for the unit to be disassembled in

the field to aid in the transport and installation in an existing building

• Fan housing is split in the factory. • All splits include bolted flanges for ease of

assemble.• Flanges are welded to the housing• Standard split is horizontal, just above the

fan shaft• Vertical, scroll housing, 4-way splits and

bolt-on pedestals are available, consult factory for details.

• Concentric locking bearings are recommended with split housing option. See page 5

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA*, CPA-A*, CPFB*, CPS*, CPS-A*, CPV*, Material Handler*Housing will no longer be rotatable with split housing

Horizontal Split Vertical Split

4-way Split Scroll Split


Wheel Options

MATERIAL HANDLER WHEEL TYPESMaterial Handlers have different wheel to address the material the fan is conveying. Like the unit, wheel are available in Standard or Heavy-Duty construction

Features and Benefits• MH – Open Type

• Light material such as dust or other small granular material

• MHB – Backplate Type• String or fibrous material,

like paper shredding, threads or other cloth fibers

• MHR – Reinforced Open Type• Like the MH this wheel is

design for heavier dust and larger particles

• MHA – Air Handling Type• Clean air, high pressure

application

Associated ProductsMaterial Handler

MH MHB

MHR MHA

ALUMINUM WHEEL

Features and Benefits• Available for either flat blade or airfoil wheel

design• Lighter wheel without any reduction in

strength• Maximum temperature 300°F• Used in some corrosion resistant applications.

See Compute-A-Fan Tools / Corrosion Resistance Guide for more information

• Required for AMCA spark resistance construction. See page 2 for details

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA*, CPA-A*, CPS, CPS-A, CPV, Material Handler***Standard construction for CPA, & CPA-A**Available for MHA wheel only

COATINGS• Lorenized• Epoxy powder • The list goes on!• What is right for your

applications? • More detailed information

is available in the Coating Brochure


Inlet Connections

FLANGED INLET

Features and Benefits• Provides flanged, bolted

connection for the attachment of ductwork

• Constructed of structural angle and welded to minimum 10-gauge tube

• Bolted to inlet at the factory*• Available in steel or aluminum• Standard pre-punched holes

spaced to matches inlet cone bolt location

• Optional pre-punched hole pattern of 4 inch maximum on-center spacing, to meet NFPA 96 requirement for UL Restaurant Exhaust Listing installation

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers**Flanged Inlet on Material Handlers are welded directly to the inlet collar of the fan

INLET COMPANION FLANGE

Features and Benefits• Provides an exact mating part for

the connection of ductwork• Used in conjunction with Flanged

Inlet• Constructed with the same

structural angle as the Flanged Inlet

• Ship loose for attaching to ductwork

• Available in steel or aluminum• Pre-punched holes spaced to

matches either the standard or optional hole pattern of the Flanged Inlet

Flanged Inlet

Inlet Companion Flange

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers


Outlet Connections

DISCHARGE FLANGE

Features and Benefits• Provides method for connecting

discharge duct to the unit• The welded structural angle is

constructed of the same material as the housing

• Vent Sets / Utility Sets• Standard feature • Bolted to housing

• Blowers• Standard feature • Welded to housing

• Material Handler • Optional • Welded to housing

• Pre-punched are available for either standard pattern or 4 inch maximum on-center spacing, to meet NFPA 96 requirement for UL Restaurant Exhaust Listing installation


DISCHARGE COMPANION FLANGE

Features and Benefits• Provides an exact mating

part for the connection of ductwork

• Used in conjunction with Discharge Flange

• Constructed with the same structural angle as the Discharge Flange

• Ship loose for attaching to ductwork

• Available in steel or aluminum

• With or without pre-punched holes

• Pre-punched flanges are spaced to match either the standard or optional hole pattern of the Discharge Flange

Discharge Flange

Discharge Companion Flange



Flex Connector and Stainless-Steel Construction

Feature and Benefits• Reduces vibration transmission from

the fan to the duct work• Neoprene coated fiberglass fabric

mechanically fastened and sealed • Discharge Flex Duct ConnectorS are

provided with a flanged connection

FLEX DUCT CONNECTOR

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV

VIBRATION ISOLATION• Rails versus Bases?• Rubber-in-Shear versus

Spring?• What type of Springs? • More detailed information is

available in the Vibration Isolation Brochure

STAINLESS STEEL CONSTRUCTIONFeature and Benefits• For specific corrosion resistant application• Available in 304 and 316 alloys• Option for entire unit or airstream only

stainless-steel construction• Refer to Compute-A-Fan Tools / Corrosion

Resistance Guide for more information

Associated ProductsCPS, CPS-A

0.032 Aluminum

0.032 Aluminum

0.032 Aluminum

D

W

H

0.032 Aluminum


Inlet Box and Curb Cap

Feature and Benefits• Inlet Box plenum is design to have less than 1% impact on performance• Compact footprint that requires only one roof penetration versus

traditional duct drop and equipment rails • Removable gasketed plenum access panel with quick release latches• Available with NOA (Hurricane) certification

Associated ProductsCPA, CPA-A, CPS, CPS-A, CPV

CURB CAP AND INLET BOX

Quick release latches for easy access

Low loss inlet box

Curb cap

Roof curb

Conveniently located handles for installation and removal


Stack Extension

STACK EXTENSIONFeatures and Benefits• 10-foot discharge height• Design to withstand 125 MPH continuous wind load

without guy wires• Lifting lugs assist in installation• Aluminum construction • Drain in housing automatically included with stack

extension

Associated ProductsCPS, CPS-A, CPV, (Sizes 60-365)

Vari-Flow Motors & Controls• Vari-Flow motors and controls are ideal when

simple, demand-based control is required.• Energy savings and controllability have never been

easier• Includes pressure, temperature, humidity, CO2, VOC

and 2-speed control• SimpliDrive – Cook’s pre-installed, pre-wired, pre-

programmed VFD is compatible with the entire line of Vari-Flow controls

• More detailed information is available on the Vari-Flow product pages and in the Vari-Flow Product Guide

*Stack Extension for sizes 60-270 are shipped in two sections


Airflow Measurement and Monitoring

Inlet Piezometric Ring

Feature and Benefits• Non-invasive airflow

measurement device that does not impact airflow performance

• High pressure and low-pressure ports are piped to the fan housing exterior

• With the connection of a differential pressure measurement device an airflow measure can be achieved

INLET PIEZOMETRIC RING

Feature and Benefits• Displays, monitors and

communicates airflow using the piezometric ring

• All flow coefficients are pre-programmed into the unit. Simply set the Cook fan model and size via the pushbutton display

• Display either CFM or LPS• Outputs 0-10 signal which is

proportional to the airflow for connection to BMS/BAS

• Ships assembled in a NEMA 4, 4X, 12, 13 enclosure

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPS, CPS-A, CPV

Associated ProductsArrangement 1, 2, 3, 4, 8, 9 & 10 CA, CA-4, CF, CF-4 Single Wide & Double Wide; CPA, CPA-A, CPS, CPS-A, CPV

CFMS- COOK FLOW MONITOR


Motor Accessories

MOTOR SLIDE BASE

MOTOR HEAT SHIELD

Feature and Benefits• Provides method for tensioning belts• Slide Base to be securely anchored to

concrete slab or isolation base• Steel construction with plated steel

tension bolts• Available for motor frames 56 to

449T

Associated ProductsArrangement 1, 3, & 9* CA, CA-4, CF, CF-4, Single Wide & Double Wide; Arrangement 1 & 9* Material Handler*Provided as a standard feature for arrangement 9 units

Feature and Benefits• Shields motor from heat radiating

from fan housing• Constructed of foil backed fiberglass

or aluminum plate• See page 3 for High Temperature

Construction for detailsAssociated ProductsArrangement 1, 2, 9 & 10 CA, CA-4, CF, CF-4 Single Wide; CPA, CPA-A, CPFB, CPS, CPS-A, CPV, Material Handlers

DAMPERS & SHUTTERS• Cook offers a wide variety of gravity

backdraft, motorized backdraft, control style and low leakage dampers

• More detailed information is available in the Damper & Shutter Accessories Product Guide

Buy American• Loren Cook Company products

are manufactured in the USA• Cook manufacturing locations

• Springfield, Missouri*• Coffeyville, Kansas*Corporate Headquarters

NEMA Enclosures Types*

NEMA 1

NEMA 1 (Lockable)

NEMA 1 Heavy Duty

NEMA 3

NEMA 4

NEMA 7 / 9

Service Switches


NEMA 1Indoor use only. Provides protection against personnel access and against ingress of foreign objects like falling dirt.

NEMA 3 For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, and snow), windblown dust and will not be damaged by external formation of ice.

NEMA 3R For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, snow), and will not be damaged by external formation of ice. Windblown dust protect is not part of the rating.

NEMA 4 For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, snow, splashing water, and hose directed water), windblown dust and will not be damaged by external formation of ice.

NEMA 4X For either indoor or outdoor use. Provides protection against personnel access and against ingress of water (rain, sleet, snow, splashing water, and hose directed water), windblown dust and will not be damaged by external formation of ice. Also provide an additional level of protection against corrosion.

NEMA 7ǂ

Enclosures constructed for indoor hazardous classified locations as Class I, Division 1, Groups A, B, C, or D.

NEMA 9ǂ

Enclosures constructed for indoor hazardous classified locations as Class II, Division 1, Groups E, F, or G.

Additional features and terms:Lockable – Provided with means of locking the device to prevent from being energized.Heavy duty – As known as ‘knife blade’. Visible bars or blades that operate to close the switch circuit.

*Adapted from National Electrical Manufactures Association, NEMA Standards Publication 205 (Current)ǂ NEMA enclosure rating types can be combined to achieve the required rating for the environment. Example NEMA 3R, 7/9 for outdoor hazardous locations.

ACCESSORIES

May 2020

Loren Cook Company2015 E Dale St

Springfield, MO 65803www.lorencook.com

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