Labconco Intelli-Sense CS 10 User manual

Intelli-Sense™Multi-Speed
Blowers
Coated Steel Models
Complete Intelli-Sense MSB
Blower with Controls
Intelli-Sense MSB Blower –No Controls (used for
replacement or Integrated Intelli-Sense Hoods)
All 50/60 Hz
All 50/60 Hz
CS 10"
7061110-115v, -20-230v
7061111-115v, -21-230v
CS 12"
7061112-115v, -22-230v
7061113-115v, -23-230v
Fiberglass Models
Complete Intelli-Sense MSB
Blower with Controls
Intelli-Sense MSB Blower –No Controls (used for
replacement or Integrated Intelli-Sense Hoods)
All 50/60 Hz
All 50/60 Hz
FRP 10"
7181810-115v, -20-230v
7181811-115v, -21-230v
FRP 12"
7181812-115v, -22-230v
7181813-115v, -23-230v
PVC Models
Complete Intelli-Sense MSB
Blower with Controls
Intelli-Sense MSB Blower –No Controls (used for
replacement or Integrated Intelli-Sense Hoods)
All 50/60 Hz
All 50/60 Hz
PVC 10"
7183410-115v, -20-230v
7183411-115v, -21-230v
PVC 12"
7183412-115v, -22-230v
7183413-115v, -23-230v

Copyright © 2019 Labconco Corporation. The information contained in this manual and the accompanying
products are copyrighted and all rights reserved by Labconco Corporation. Labconco Corporation reserves
the right to make periodic design changes without obligation to notify any person or entity of such change.
Returned or Damaged Goods
Do not return goods without the prior authorization from Labconco. Unauthorized returns will not be
accepted. If your shipment was damaged in transit, you must file a claim directly with the freight carrier.
Labconco Corporation and its dealers are not responsible for shipping damages.
The United States Interstate Commerce Commission rules require that claims be filed with the delivery
carrier within fifteen (15) days of delivery.
Limitation of Liability
The disposal and/or emission of substances used in connection with this equipment may be governed by
various federal, state, or local regulations. All users of this equipment are required to become familiar with
any regulations that apply in the user’s area concerning the dumping of waste materials in or upon water,
land, or air and to comply with such regulations. Labconco Corporation is held harmless with respect to
user’s compliance with such regulations.
Contacting Labconco Corporation
If you have questions that are not addressed in this manual, or if you need technical assistance, contact
Labconco’s Customer Service Department or Labconco’s Product Service Department at 1-800-821-5525
or 1-816-333-8811, between the hours of 7:30 a.m. and 5:30 p.m., Central Standard Time.
Part #7115900, Rev. I
ECO L864
Warranty
Labconco Corporation provides a warranty to the original buyer for the repair or replacement of parts and
reasonable labor as a result of normal and proper use of the equipment with compatible chemicals. Broken
glassware and maintenance items, such as filters, gaskets, light bulbs, finishes and lubrication are not
warranted. Excluded from warranty are products with improper installation, erratic electrical or utility supply,
unauthorized repair and products used with incompatible chemicals.
The warranty for Intelli-Sense™ Multi-Speed Blowers will expire one year from date of installation or two
years from date of shipment from Labconco, whichever is sooner. Warranty is non-transferable and only
applies to the owner (organization) of record.
Buyer is exclusively responsible for the set-up, installation, verification, decontamination or calibration of
equipment. This limited warranty covers parts and labor, but not transportation and insurance charges. If the
failure is determined to be covered under this warranty, the dealer or Labconco Corporation will authorize
repair or replacement of all defective parts to restore the unit to operation. Repairs may be completed by 3rd
party service agents approved by Labconco Corporation. Labconco Corporation reserves the rights to limit this
warranty based on a service agent’s travel, working hours, the site’s entry restrictions and unobstructed access
to serviceable components of the product.
Under no circumstances shall Labconco Corporation be liable for indirect, consequential, or special damages
of any kind. This warranty is exclusive and in lieu of all other warranties whether oral, or implied.

ORIGINAL INSTRUCTIONS
TABLE OF CONTENTS
CHAPTER 1: INTRODUCTION 1
About This Manual 2
Typographical Conventions 3
CHAPTER 2: PREREQUISITES 5
Location Requirements 5
Mounting Support Requirements 6
Electrical Power Requirements 6
Controls Wiring 6
Space Requirements 6
CHAPTER 3: GETTING STARTED 7
Unpacking Your Blower 7
Install Blower on a Supporting Structure 8
Adjust Blower Outlet Orientation 8
Install Exhaust Run with Vibration Dampers 9
Connect Blower Inlet for Coated Steel Blowers 9
Connect Blower Inlet for Fiberglass Blowers 9
Connect Blower Inlet for PVC Blowers 9
Connect PVC Blower Drain 10
Connect to the Blower Outlet 10
For Coated Steel Blowers 13
For Fiberglass Blowers 13
For PVC Blowers 13
Connect to the Electrical Supply Source 14
Modify the Fume Hood Controls and Install the
MSB Control Box 15
Adjust Fan Speed and Confirm Performance 21
CHAPTER 4: PERFORMANCE DATA & SAFETY PRECAUTIONS 23
Specifications and Performance Data 23
Blower Curves 24
Safety Precautions 30
CHAPTER 5: USING YOUR BLOWER 31
CHAPTER 6: MAINTAINING YOUR BLOWER 33
Routine Maintenance 33
Motor 33
Bearings 34
Coupler 34
Common Service Operations 34

CHAPTER 7: MODIFYING YOUR BLOWER, CALCULATING
STATIC PRESSURE LOSS, AND BLOWER SIZING 35
Airflow Monitors for Fume Hoods 35
Two Main Blower Modifications 36
Additional Modifications by Adding Ductwork Accessories 36
Blower Sizing Example 36
Sizes and Pressure Losses in Thermoplastic Duct 37
Typical Fume Removal System 38
Thermoplastic Duct 39
Duct Couplings, Female 39
Duct Couplings, Male 39
Elbows 39
Thermoplastic Duct Reducers 40
Zero Pressure Weathercaps 40
Spiral Tube 40
Manual Duct Dampers 40
Flexible Duct Connections 41
Blower Transition Adaptors 41
Auxiliary-Air Transition Adaptor 41
T and Y Connections 41
Accessories for Basic 47 Hoods 42
Exhaust Transition Adaptor 42
Accessories for Perchloric Acid Applications 42
Wash Rings 42
Accessories for Pathogens, Organic Vapors and Odor Control Applications 42
HEPA Filter Packs 42
Charcoal Filter Packs 42
Backdraft Dampers 43
Bird Screens 43
CHAPTER 8: PROTECTOR I-S HOOD 45
CHAPTER 9: TROUBLESHOOTING 52
APPENDIX A: BLOWER REPLACEMENT PARTS 55
APPENDIX B: BLOWER DIMENSIONS 58
APPENDIX C: BLOWER ENVIRONMENTAL CONDITIONS,
WIRING DETAIL, AND WIRING DIAGRAMS 61
APPENDIX D: TYPICAL INTELLI-SENSE OPERATING CURVE 65
APPENDIX E: TYPICAL LABORATORY CONTROLS WITH
INDIVIDUAL INTELLI-SENSE BLOWERS 67
APPENDIX F: TYPICAL PERCHLORIC ACID HOOD
INSTALLATION DIAGRAM 68

Product Service 1-800-522-7658
1
CHAPTER 1
INTRODUCTION
Congratulations on your purchase of a Labconco Intelli-Sense Multi-Speed Blower
(MSB). Your MSB with electronically commutated motor (ECM) has been
specifically engineered to meet the demanding requirements of most laboratory
ventilation situations associated with fume hood and enclosure exhaust. The
outside steel housing of the blower encloses the UL listed ECM motor, shaft,
junction box wiring, and bearings. The MSB also includes a fume hood blower
control box to be located on top of the fume hood, inlet power control cable, three
position switch replacement, and fume hood switch label replacement.
The contaminated air housing of the Coated Steel Blower has a protective phenolic
coating. The Fiberglass Blower features a fiberglass reinforced polyester housing
and an injection molded polypropylene impeller. The PVC Blower housing is
formed out of polyvinyl chloride (PVC) and the impeller wheel is injection molded
polyvinylidene fluoride (PVDF). The MSB’s feature cooling vents and weather
cover that allow for unrestricted exterior roof mounting. The blowers also feature
forward curved impellers to ensure quiet operation and optimum air delivery.
All Multi-Speed Blowers utilize a direct drive ECM motor that uses 1/3 less
energy than typical AC belt drive motors. ECM’s run approximately 95% efficient
whereas AC motors run about 60% efficient. Multi-Speed Blowers make it easy to
size fume hood blower systems as they cover a much broader speed range. For
most applications, the Intelli-Sense Blower is typically used for only one fume
hood. The Intelli-Sense Multi-Speed Blower with two or three position operation
can be used in standby mode or night setback mode and set to exhaust at a
minimum flow rate with the fume hood sash closed. Two or three speed blower
systems should be considered when the total number of fume hoods does not
financially substantiate the start-up costs of a variable air volume (VAV) system.
Two or three position blower systems are less expensive to install and still provide
an air volume reduction. Please reference Appendix E for typical laboratory
controls with individual Intelli-Sense Blowers. Please refer to Chapter 8 for
Integrated Intelli-Sense Hoods supplied with limit switches for automatic Intelli-
Sense Blower operation. Studies have shown that fume hoods on two or three

Chapter 1: Introduction
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2
Original instructions
position systems can reduce air flow (CFM) by 50-70% per year. For example, a 6-
ft fume hood operating 24 hours a day at 100fpm (735 CFM at $7/CFM/Yr) at the
18-in sash height at constant volume can cost $5145 per year to operate, but with a
MSB used 4 hours per day and the remaining 20 hours a day in standby mode
would cost only $2578 per year to operate, saving $2567 per hood annually. For
this example, the $2567 annual savings is 50%.
Your Multi-Speed Blower offers many unique features to enhance performance.
To take full advantage of them, acquaint yourself with this manual and keep it
handy for future reference. If you are unfamiliar with how blowers operate, review
Chapter 4: Performance Data and Safety Precautions before you begin operating
the blower. Even if you are experienced, review Chapter 5: Using your Blower.
If the unit is not operated as specified in this manual it may
impair the protection provided by the unit.
Si l'appareil n'est pas utilisé comme spécifié dans ce manuel, il
peut compromettre la protection offerte par l'appareil.
About This Manual
This manual will help you learn how to install, use, and maintain your blower.
Instructions for installing optional equipment on your blower are also included.
Chapter 1: Introduction provides a brief overview of the blower, explains the
organization of the manual, and defines the typographical conventions used in the
manual.
Chapter 2: Prerequisites explains what you need to do to prepare your site before
you install your blower. Electrical and service requirements are discussed.
Chapter 3: Getting Started contains the information you need to properly unpack,
inspect, install and certify your blower.
Chapter 4: Performance Data and Safety Precautions explains how the blower
operates and the appropriate precautions you should take when using the blower.
Chapter 5: Using your Blower discusses basic operation.
Chapter 6: Maintaining Your Blower explains how to perform routine
maintenance on your blower.
Chapter 7: Modifying Your Blower, Calculating Static Pressure Loss, and Blower
Sizing explains how to modify the blower or add ductwork accessories.
!

Chapter 1: Introduction
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Original instructions
Chapter 8: Troubleshooting contains a table of situations you may encounter
while using your blower including the probable causes of the problems and
suggested corrective actions.
Appendix A: Blower Replacement Parts contains labeled diagrams of all of the
components of the blowers.
Appendix B: Blower Dimensions contains comprehensive diagrams showing all of
the dimensions for the various blowers.
Appendix C: Blower Environmental Conditions contains the environmental
conditions to operate the blower.
Typographical Conventions
Recognizing the following typographical conventions will help you understand and
use this manual:
Book, chapter, and section titles are shown in italic type (e.g., Chapter 3:
Getting Started).
Steps required to perform a task are presented in a numbered format.
Comments located in the margins provide suggestions, reminders, and
references.
Critical information is presented in boldface type in paragraphs that are
preceded by the exclamation icon. Failure to comply with the information
following an exclamation icon may result in injury to the user or permanent
damage to the Blower.
L'information critique est présenté en caractères gras dans les paragraphes qui
sont précédés de l'icône d'exclamation. Le non respect de l'information suite à
un point d'exclamation peut entraîner des blessures à l'utilisateur ou des
dommages permanents au ventilateur.
Critical information is presented in boldface type in paragraphs that are
preceded by the wrench icon. Only a trained certifier or contractor should
perform these operations. Failure to comply with the information following a
wrench icon may result in injury to the user or permanent damage to your
Blower.
L'information critique est présenté en caractères gras dans les paragraphes qui
sont précédés de l'icône de la clé. Seul un certificateur ou un entrepreneur
qualifié doit effectuer ces opérations. Le non respect de l'information suite à
une icône de la clé peut entraîner des blessures à l'utilisateur ou des dommages
permanents à votre ventilateur.
Important information is presented in capitalized type in paragraphs that are
preceded by the pointer icon. It is imperative that the information contained in
these paragraphs be thoroughly read and understood by the user.
A letter icon precedes information that is specific to a particular blower model.
The CS icon indicates the text is specific to the Coated Steel Blower.
!

CS

Chapter 1: Introduction
Product Service 1-800-522-7658
4
Original instructions
The FRP icon indicates the text is specific to the Fiberglass Blower.
The PVC icon indicates the text is specific to the PVC Blower.
CAUTION –See Manual. When this symbol is on the unit it indicates a
caution that is detailed in this manual.
ATTENTION –Voir le manuel. Lorsque ce symbole est allumé l'unité, il
indique une mise en garde qui est détaillée dans ce manuel.
CAUTION –Hot Surface.
AVERTIR –Surface Chaude
If you would like to review how blowers operate, or their differentiating features
go to Chapter 4: Performance Data and Safety Precautions.
For information on the operational characteristics of the blower, go to Chapter 5:
Using your Blower.
If your blower is installed and you need to perform routine maintenance on the
blower, proceed to Chapter 6: Maintaining Your Blower.
For information on making modifications to the configuration of your blower, go
to Chapter 7: Modifying Your Blower, Calculating Static Pressure Loss, and
Blower Sizing.
Refer to Chapter 8: Troubleshooting if you are experiencing problems with your
blower.
FRP
PVC
!

Product Service 1-800-522-7658
5
CHAPTER 2
PREREQUISITES
Before you install your blower, you need to prepare your site for installation. A
dedicated source of electrical power must be located near the installation site.
Carefully read this chapter to learn:
The location requirements for your installation site.
The mounting support requirements for your installation site.
The electrical power requirements for your installation site.
The fume hood controls, controls wiring, and controls modifications for
your installation site.
The space requirements for your installation site.
Refer to Appendix B: Blower Dimensions for complete blower dimensions.
Refer to Appendix C: Blower Environmental Conditions for complete
environmental conditions and wiring diagram.
Location Requirements
In positioning your blower, care should be taken to make sure that it is away from
all other types of air handling equipment (intake fans, air conditioning units, etc.).
Your blower should also include a minimum of 7 ft. of ducting above the roofline
to generate proper air dispersion of materials being exhausted through the blower.
Also consider the location of the blower inlet with respect to the hood you are
exhausting. Proper planning and layout are essential in selecting a blower
location.

Chapter 2: Prerequisites
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Original instructions
Mounting Support Requirements
You must provide vibration isolators, vibration mounting pads, and/or a roof curb
support for proper mounting of the blower. Vibration isolators or vibration
mounting pads are available from many sources such as a local industrial supply
company. Labconco recommends supporting the blower with 5/16" diameter
mounting hardware.
Electrical Power Requirements
Please refer to the wiring diagrams in Appendix C. The exterior blower wiring
should be terminated at the junction box located inside the blower housing. The
outside blower weather cover is removed to access the junction box. The MSB
blower is wired according to the specific voltage and terminations on the motor
and blower model. Locate the specific wiring voltage for your blower motor on
the instruction manual cover and in the charts in Chapter 4: Performance Data and
Safety Precautions. All MSB blowers operate at a maximum of 10 full load amps
for 115V and 6 full load amps for 230V.
Controls Wiring Requirements
Please refer to the wiring diagrams in Appendix C. The MSB comes with the
Intelli-Sense MSB Control Box, controls cable, power inlet cable, 3-position
switch, and 3-position switch label. The power for the MSB Control Box comes
from the light circuit on the fume hood. The controls wiring for the MSB requires
a fume hood modification to add the control cable from the 3-position switch/label.
A shielded cable (Belden 9940, 22 GA, 4 conductor shielded or equal) from the
roof blower junction box must be run to the MSB Control Box per the wiring
diagram and wiring detail in Appendix C. If needed, refer to the diagram in
Appendix E that further depicts the controls needed for a typical laboratory with
individual Intelli-Sense blowers.
Space Requirements
The dimensions for the different models are shown in Appendix B: Blower
Dimensions.

Product Service 1-800-522-7658
7
CHAPTER 3
GETTING STARTED
Now you are ready to unpack, inspect, and install the blower. Read this chapter to
learn how to:
Unpack and move your blower.
Install the blower on a supporting structure.
Adjust the blower outlet orientation.
Install the exhaust run with vibration dampers.
Connect to the blower inlet.
Connect to the blower outlet.
Connect the electrical supply source.
Modify the fume hood controls and install the MSB Control Box.
Adjust the fan speed and confirm blower performance.
Connect the PVC Blower drain. (PVC Blowers only)
Unpacking Your Blower
Carefully remove the shipping carton from your blower. Inspect the blower for
damage that may have occurred in transit. If the blower is damaged, notify the
delivery carrier immediately and retain the entire shipment intact for inspection by
the carrier.
DO NOT RETURN GOODS WITHOUT THE PRIOR
AUTHORIZATION OF LABCONCO. UNAUTHORIZED
RETURNS WILL NOT BE ACCEPTED.

The United
States Interstate
Commerce
Commission
rules require
that claims be
filed with the
delivery carrier
within fifteen
(15) days of
delivery.

Chapter 3: Getting Started
Product Service 1-800-522-7658
8
Original instructions
IF YOUR BLOWER WAS DAMAGED IN TRANSIT, YOU
MUST FILE A CLAIM DIRECTLY WITH THE FREIGHT
CARRIER. LABCONCO CORPORATION AND ITS
DEALERS ARE NOT RESPONSIBLE FOR SHIPPING
DAMAGE.
Do not discard the packing material for your blower until you have installed and
tested the blower.
Install the Blower on a Supporting
Structure
Now that you have located your blower as instructed in Chapter 2: Prerequisites,
you are ready to mount the blower on a roof curb support. Additionally, you may
isolate the blower by mounting the blower on either vibration isolators or vibration
mounting pads, which are available from a local industrial supply company. The
supporting structure is custom for each installation. Labconco recommends
supporting the blower with 5/16" diameter mounting hardware. See Appendix B:
Blower Dimensions for appropriate mounting hole locations for your particular
blower.
Adjust the Blower Outlet Orientation
The housing on your blower can be rotated to facilitate your duct run
configuration. By rotating the blower housing, you will be able to change the
blower outlet location on your blower. The Coated Steel Blowers can be rotated to
one of eight different positions and the Fiberglass or PVC Blowers can be rotated
to one of three different positions. See the drawings in Appendix A to locate the
parts to disassemble. To rotate the blower housing, proceed as follows:
1. Remove the upper weathercover panel, which has louvers.
2. Once removed, you have complete access to the 8 fasteners that hold your
blower housing assembly in position. Removing these fasteners allows you
to rotate the housing to one of the other desired outlet positions. Then
insert the 8 fasteners and secure the blower housing in that specific
position.
3. Reinstall the upper weathercover panel and you are ready for operation.
HINT:Most blowers are installed for upward discharge.

!

Chapter 3: Getting Started
Product Service 1-800-522-7658
9
Original instructions
Install the Exhaust Run with Vibration
Dampers
Rubber isolation sleeves may be used in your exhaust duct run prior to entering the
blower inlet. These isolation sleeves dampen vibration that is being generated by
the blower and decrease noise level at the fume hood. See the flexible duct
connections listed in Chapter 7.
Connect to the Blower Inlet for Coated
Steel Blowers
10" Coated Steel Blowers feature a 10-7/8" ID by 1-1/2" wide circular inlet ring.
This inlet ring is suitable for use with 10-inch diameter PVC ductwork. The PVC
ductwork itself will fit inside the inlet ring and should be fastened by sheet metal
screws through the inlet ring. A silicone sealant should also be used to seal
between the ductwork and the blower inlet ring to prevent any air or moisture
leakage.
12" Coated Steel Blowers feature a 12-1/4" OD by 1-1/2" wide inlet ring, which is
suitable for use with 12-inch diameter PVC ductwork. The 12-inch diameter PVC
ductwork will fit over the inlet ring on the blower and should be fastened in
position by sheet metal screws into the metal ring.
Connect to the Blower Inlet for Fiberglass
Blowers
10" Fiberglass Blowers feature a 10-3/8" OD inlet ring. This inlet ring is suitable
for use with 10-inch diameter PVC ductwork. The PVC ductwork will fit outside
the inlet ring and should be fastened by sheet metal screws through the fiberglass
inlet ring. A silicone sealant is to be used to seal between the ductwork and the
blower inlet ring to prevent air or moisture leakage.
12" Fiberglass Blowers feature 12-3/8" OD inlet ring, which is suitable for use
with 12-inch diameter PVC ductwork. The 12-inch diameter PVC ductwork will
fit over the inlet ring on the blower and fastened by sheet metal screws through the
fiberglass inlet ring.
Connect to the Blower Inlet for PVC Blowers
10" PVC Blowers feature a 10-3/8" OD inlet ring. This inlet ring is suitable for
use with 10-inch diameter PVC ductwork. The PVC ductwork will fit outside the
inlet ring through the PVC inlet ring. A silicone sealant should also be used to seal
between the ductwork and the blower inlet ring to prevent air or moisture leakage.
CS
FRP
PVC

Chapter 3: Getting Started
Product Service 1-800-522-7658
10
Original instructions
12" PVC Blowers feature a 12-3/8" OD inlet ring, which is suitable for use with
12-inch diameter PVC ductwork. The 12-inch diameter PVC ductwork will fit
over the inlet ring on the blower and should be fastened in position by sheet metal
screws into the fiberglass ring.
Connect the PVC Blower Drain
The PVC Blower has a 1/2" NPT drain connection in the bottom of the housing.
When this connection is used, it should be directed into a proper drain or into the
exhaust duct for proper disposal.
CAUTION: Draining the blower housing directly onto the roof may
cause damage to your roof due to the corrosive chemicals exhausted.
ATTENTION: Vidange du carter de la soufflante directement
sur le toit peut causer des dommages à votre toit en raison des
produits chimiques corrosifs épuisé.
Connect to the Blower Outlet
Before proceeding with the blower outlet connection, read the two warnings and
follow the suggested pictures listed next:
WARNING: Should your exhaust stack, on the outlet side of
the exhaust blower, extend over 7 feet, both guy wires and
additional structural supports are required to carry the weight
of this ductwork. The guy wires must be substantial enough to
support the exhaust stack against high wind velocities. See
photos on next page.
ATTENTION: Si votre cheminée d'échappement, sur le côté de
sortie du ventilateur d'évacuation, s'étendent sur 7 pieds, les
deux haubans et les supports structuraux supplémentaires sont
nécessaires pour supporter le poids de cette canalisation. Les
haubans doivent être suffisamment importants pour soutenir la
cheminée d'échappement contre la vitesse des vents élevés. Voir
les photos à la page suivante.
HINT: An exhaust damper either before or after the MSB
Blower is very useful for fine tuning the airflow.
PVC
!
!

Chapter 3: Getting Started
Product Service 1-800-522-7658
11
Original instructions
Good Installation –Picture 1
Good Installation –Picture 2
Poor Installation –Picture 3
Two-piece C-clamp coupler supports
exhaust duct diameter to secure weight load
of duct picked up by structural support.
Structural support is connected to C-clamp coupler.
Note: Duct diameters, duct materials,
and heights change and Labconco
does not carry the structural supports
or guy wires.
Guy wires from 3 sides are supported
off the roof to prevent wind velocities
from deflecting the exhaust duct.
Blower damage can occur without
structural supports and guy wires.
(Please note the crooked exhaust duct
when installed without structural
supports and without guy wires.)

Chapter 3: Getting Started
Product Service 1-800-522-7658
12
Original instructions
Good Installation –Picture 4
Note: Duct diameters, duct materials, and heights change and Labconco does not carry
the structural supports or guy wires.
Five Typical Blowers
Typical 3-piece turnbuckle
connected to structural frame.
Typical structural frame to
support exhaust duct and
resist wind damage.

Chapter 3: Getting Started
Product Service 1-800-522-7658
13
Original instructions
For Coated Steel Blowers
10" Coated Steel Blowers include a 10" by 5-1/2" rectangular outlet. A
rectangular to round Transition Adaptor, Labconco part number 4722401, adapts
the outlet connection to accept 10-inch diameter PVC ductwork Transition
Adaptor. Labconco part number 4722400 adapts the outlet on these blowers to
accept 8-inch diameter PVC ductwork.
12" Coated Steel Blowers include a 13-1/2" by 7" rectangular outlet. Transition
Adaptor, Labconco part number 7003400, adapts the outlet of these blowers to
accept 12-inch diameter PVC ductwork.
For Fiberglass Blowers
10" Fiberglass Blowers feature a 10-3/4" ID outlet connection. Ten-inch diameter
ductwork will slip into this connection and should be held by sheet metal screws
through the housing. Silicone sealant should be used to seal any air leaks between
the duct and blower outlet connection.
12" Fiberglass Blowers feature a 12-3/4" ID outlet connection. Twelve-inch
diameter ductwork will slip into this connection and should be held by sheet metal
screws through the housing. Silicone sealant should be used to seal any air leaks
between the duct and blower outlet connection.
For PVC Blowers
10" PVC Blowers feature a 10-3/4" ID outlet connection. Ten-inch diameter
ductwork will slip into this connection and should be held by sheet metal screws
through the housing. Silicone sealant should be used to seal any air leaks between
the duct and blower outlet connection.
12" PVC Blowers feature a 12-3/4" ID outlet connection. Twelve-inch diameter
ductwork will slip into this connection and should be held by sheet metal screws
through the housing. Silicone sealant should be used to seal any air leaks between
the duct and blower outlet connection.
CS
FRP
PVC

Chapter 3: Getting Started
Product Service 1-800-522-7658
14
Original instructions
Connect to the Electrical Supply Source
The main electrical power supply connection for the MSB is made directly at the
junction box underneath the outer weather cover and below the ECM motor. Refer
to wiring detail and wiring diagrams in Appendix C. Remove the weather cover
from the MSB and wire directly to the power wires inside the outside junction box
located beneath the ECM motor. A knockout has also been provided on the side of
the j-box for this purpose.
Access the j-box by removing the top weathercover of the blower base. This
weathercover is held in position by machine screws, and once they have been
removed, you will have access to the j-box of your blower.
CAUTION: Inspect the MSB blower nameplate voltage and
model number carefully prior to connecting your electrical
service. The wiring harness determines the voltage. The 115V
harness is 7115300 and the 230V harness is 7115301 per wiring
diagrams in Appendix C.
ATTENTION: Vérifiez la tension nominale ventilateur MSB et
le numéro de modèle attentivement avant de brancher votre
service électrique. Le câblage détermine la tension. Le harnais
de 115V est 7115300 et le faisceau de 230V est 7115301 par les
schémas de câblage à l'annexe C.
The blower base end panel is positioned above the blower base to allow for a
continuous flow of cooling air through the motor cavity. Slots and louvers have
also been placed on both the front and back of the blower base to provide airflow
through this motor cavity. Because there is a gap between the end panel and the
base, you will be able to run your electrical conduit directly underneath this panel.
No special cutouts or modifications are necessary.
NOTE: WHEN THE WIRING FOR YOUR BLOWER HAS
BEEN COMPLETED, CHECK FOR PROPER MOTOR
ROTATION. THE MOTOR SHOULD OPERATE IN A
CLOCKWISE ROTATION AS VIEWED FROM THE SHAFT
SIDE TO OBTAIN PROPER ROTATION OF THE IMPELLER
WHEEL. WHEN IN OPERATION, THE IMPELLER SHOULD
ROTATE COUNTERCLOCKWISE WHEN VIEWED FROM
THE BLOWER INLET.

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Chapter 3: Getting Started
Product Service 1-800-522-7658
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Original instructions
CAUTION: This blower contains an electrical motor, which
requires proper electrical connection per the countries National
Electrical Code to prevent hazards. The National Electrical
Code and local codes may require that a circuit disconnect,
overload protection, and short circuit protection be included in
the installation. The unit should be connected by a licensed
electrician.
ATTENTION: Ce ventilateur contient un moteur électrique, ce
qui nécessite une bonne connexion électrique par les pays
National Electrical Code de prévention des risques. Le National
Electrical Code et les codes locaux peuvent exiger que la
déconnexion du circuit, protection de surcharge, et la protection
de court-circuit sont inclus dans l'installation. L'appareil doit
être raccordé par un électricien agréé.
Modify the Fume Hood Controls and
Install the MSB Blower Control Box
Labconco Intelli-Sense Blowers require control circuitry to vary the speed and set
up the fume hood for two or three speed operation. If desired, the MSB can still be
set up for simple ON/OFF operation. The three switch options are listed below
and on the wiring diagrams in Appendix C.
Switch Options
Mode A
Mode B
Mode C
MAX
MAX
MAX
MED
MIN
OFF
MIN
OFF
Follow these steps to properly install the control circuitry per the wiring diagrams
in Appendix C. Note: If using the Integrated Intelli-Sense Hood supplied with limit
switches for automatic Intelli-Sense Blower operation, then refer to Chapter 8 and
only follow steps 1, 2, 4, 11, and 12.
1. Ensure the power is turned off at the roof disconnect and at the fume hood.
2. With shielded wire (Belden 9940, 22 GA, 4 conductor shielded or equal),
run the control wires from the roof mounted junction box beneath the ECM
motor to the top of the fume hood.
3. With the two self-tapping screws provided, mount the MSB Control Box to
the back of the light support per diagrams, Figure 3-1 through 3-8.
4. Crimp the shielded control wire from the roof mounted blower to the MSB
Control box per the wiring detail and wiring diagrams in Appendix C. As
needed, reference Appendix E for installation.
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Chapter 3: Getting Started
Product Service 1-800-522-7658
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Original instructions
5. Run the MSB Control Box Power Cable with the IEC inlet from the control
box to the junction box on the fume hood and connect to the fume hood
light circuit per wiring detail and wirings diagram in Appendix C.
6. If two or three position blower setting is desired, remove the blower switch
and blower switch label from the fume hood. For simple ON/OFF, skip
this step.
7. Ensure that the power to the unit is shut off and then remove the existing
wires to the blower switch. Important: Prevent the existing wires to the
blower switch from causing interference with the sash. Attach one
jumper 7115400 to the blower cable wire terminals and another jumper
7115400 to the monitor cable terminals.
8. Install the new blower switch label, blower switch, and blower switch
retainer. If needed, blower switch cutout is 0.83" x 1.45" (2.1 cm x 3.7 cm).
9. Connect the MSB Control Cable wires to the new blower switch as follows.
On one half of the switch:
a. Connect the White wire to the top terminal
b. Connect the Red wire to the middle terminal.
c. Connect the Black wire to the bottom terminal.
d. Reference Appendix C and Appendix E for wiring details.
10. If Night Setback mode is desired for an airflow monitor, connect harness
7117700 to the top two terminals on the unused half of the new blower
switch. The other end of 7117700 connects to the Night Setback input of
the airflow monitor. See Chapter 7.
11. All electrical connections to the roof mounted blower, the MSB Control
Box, and switch wiring should be intact.
12. Restore power to the roof mounted blower and the fume hood.
Figure 3-1
MSB Control Box –Manual Blower Switch