RTT Powder Booths User manual

Installation Manual
Powder Booths
Class 4
Follow Us:
>> Batch Powder Booths
>> Cartridge Batch Powder Booths
>> Pass Through Powder Booths
>> Lab Powder Booths
This Installation Manual reviews an introduction,
safety, component description, installation,
maintenance and warranties of RTT'spowder booths.
888-452-6684
www.rttsolutions.com
Revised August 2020
RTT Engineered Solutions
2975 Discovery Blvd. Rockwall, TX 75032 Toll-Free 888-452-6684 Email [email protected] www.rttsolutions.com
1

1. General Description .................................................. 2
1.1 General Description ..................................................................2
1.2 Compliance to Applicable Codes ........................................... 2
1.3 Proper Grounding Procedures.................................................3
2. Safety ..................................................................... 4
2.1 Safety Alert Symbol and Signal Words................................... 4
2.1.1 Assembly Hazards................................................................... 5
2.1.2 Operational Hazards ..............................................................6
2.1.3 Maintenance Hazards ............................................................7
2.1.4 Fire Hazard ...............................................................................7
2.2 Safety Decals...............................................................................8
2.3 NFPA 33 .......................................................................................9
3. Spray to Waste Powder Booth...................................12
3.1 Three-Stage Filter System ......................................................12
3.2 Manometer................................................................................12
3.3 Air Solenoid Valve ....................................................................16
3.4 Exhaust Fans .............................................................................17
3.5 Powder Exhaust Filter Proving Assembly ...........................20
3.6 Optional Control Panel ...........................................................20
4. Lab, Batch, and Pass Through Powder Booths............21
4.1 Control Panel with Variable Frequency Drive.....................22
4.2 Optimizing Your Collector's Performance ...........................24
4.3 Understanding the Pulse Down System ..............................26
4.4 Troubleshooting Pulse Problems .........................................30
4.5 Exhaust Filter Installation .......................................................33
4.6 Intake Filter Installation ..........................................................34
5. General Lighting Components ..................................35
5.1 Light Fixtures.............................................................................35
6. General Installation Procedures................................36
6.1 Installation General .................................................................36
6.2 Booth Assembly........................................................................37
6.3 Motor Installation.....................................................................39
6.4 Electrical ....................................................................................40
6.6 Tubeaxial Fan............................................................................42
7. General Maintenance Procedures..............................43
7.1 General Instructions ................................................................43
7.2 Fans and Motors.......................................................................43
7.3 Routine Fan Maintenance.......................................................43
7.4 Excessive Fan Vibration...........................................................44
7.5 High Motor Temperature ........................................................44
7.6 High Bearing Temperature.....................................................44
7.7 Lubrication ................................................................................44
7.8 Cautions.....................................................................................44
7.9 Environmental Limitations of Booth Components...........44
7. Warranty ................................................................46
Contents
1

General Description
1.1 General Description
This section contains literature which describes your RTT powder spray booth in general terms. Subsequent
chapters of this manual provide more detailed descriptions of the individual booths and their operating
components, as well as maintenance procedures.
This description covers a family of RTT powder booths. The following booth types are covered herein:
>> Batch Powder Booths (PB)
>> Cartridge Batch Powder Booths (RPB)
>> Pass Through Powder Booths (EPB)
>> Lab Powder Booths
The powder booth itself consists of four major components: powder application area, collection/extraction
chamber, exhaust fan and chamber, and in some cases product doors. A brief description is provided for these
and other related items.
The parts to be powder coated are placed in the powder application area, through the booth opening or
product doors (if so equipped). Air flows through the booth opening(s) to the exhaust filters. Exhaust filters will
vary based on the style of booth purchased. The booth exhaust is routed the exhaust plenum(s) at the exit of the
booth. The exhaust fan then routes the exhaust out through the Final Filters and discharges clean contaminate
free air back into the powder coating room.
Exhaust Fan and Chambers
The Spray to Waste Industrial Batch Powder exhaust chamber is located as shown in the mechanical drawing
package which is included in this manual. Powder laden air is drawn through a three stage filtration system (pre
filter, primary filter and final filter) by a tubeaxial fan which is powered by an ODP motor. Filters clean the air of
powder allowing it to return into the plant environment. The fan is made of spark resistant material and the
motor is located out of the air stream. The exhaust chamber(s) operate(s) under a negative pressure to induce
the required airflow through the exhaust filters.
The Recovery Powder Booth exhaust is located as shown in the mechanical drawing package which is included
with this manual. Powder laden air is drawn through a two stage filtration system (primary cartridge filter and
final HEPA filter) using a plug style fan with a TEFC type motor. Clean air is returned to the plant environment.
1.2 Compliance to Applicable Codes
Warning: Your safety and the safety of others is a direct result of how you operate this powder booth. Make sure
you understand all the controls and the operating instructions before beginning.
Bypassing Safety Devices There are several safety devices provided to ensure safe operation of the powder
booth. DO NOT make any attempt to override these devices.
2

Personal Safety Consult with your powder/material supplier for proper recommendations on respirator types
required for applying the powder/material supplied. Operators should read and follow instructions from the
powder companies Material Safety Data Sheets (MSDS).
All parts and components must be electrically bonded and properly grounded to prevent static buildup
and discharge.
Compliance to Applicable Codes This Powder Booth is designed to be in strict accordance with the National
Fire Protection Association Standard Number 33, “Spray Application Using Flammable Combustible Materials.
The NFPA Standard Safety Code for the design, Construction and Ventilation of Spray Finishing Operations.” This
Powder Booth meets or exceeds the requirements of the Occupational Safety and Health Administration (OSHA).
Material Specifications The powder booth panels, filter racks and product doors (if required) are constructed
of 18 gauge steel, conforming to ASTM A527 “Lock Forming Quality” and are hot dip galvanized per ASTM A525
with G90 coating.
All structural steel conforms to ASTM A36.
Safety Local fire codes prohibit smoking in the vicinity of powder coating operations. Consult your local fire
marshal for posting of “No Smoking” signs.
Improperly maintained equipment could cause sparks which could ignite the powder cloud.
For Your Safety Beware of poor electrical wiring that could cause sparks. DO NOT store flammable liquids
adjacent to or inside the powder booth. Read all refinishing product labels and instructions.
Fire Protection An approved fire detection/suppression system must be installed on the powder coating booth
to comply with NFPA 33, Section 9 and all applicable state and local codes. NOTE: Fire detection/suppression
system supplied by others.
1.3 Proper Grounding Procedures
The powder booth must be properly grounded to a positive earth ground. Powder booth installation should
include a 5/8” diameter rod by 8ʼ-0” in length driven into the ground leaving 8” of protruding above the floor (see
picture). The booth and all booth components MUST be grounded to this rod including all powder application
equipment.
PROPER BOOTH GROUNDING:
>> 5/8” diameter x 8ʼ-0” long copper rod.
>> Grounding rod installed through hole in the floor
leaving at least 8” of rod above floor as close to
booth as installation will allow.
>> Booth, parts hangers, application equipment must
be grounded to this rod.
Failure to properly ground all booth components could
possibly cause static discharge which could result in a fire.
3

2. Safety
2.1 Safety Alert Symbol And Signal Words
Before assembling, operating or servicing the spray booth, you must read, understand and follow the
instructions and safety warnings in this manual. Your spray booth may not be equipped with some of the
optional equipment described in this manual.
NEVER ALLOW ANYONE TO OPERATE THIS EQUIPMENT WITHOUT PROPER TRAINING!
The safety information in this manual is denoted by the safety alert symbol:
The level of risk is indicated by the following signal words:
DANGER - Indicates a hazardous situation, which, if not
avoided, WILL result in death or serious injury.
DANGER
WARNING - Indicates a hazardous situation, which, if not
avoided, could result in death or serious injury.
WARNING
CAUTION - Indicates a hazardous situation, which, if not
avoided, could result in minor or moderate injury.
CAUTION
NOTICE - Indicates a situation that could result in damage
to the equipment or other property.
NOTICE
4

2.1.1 Assembly Hazards
Prevent serious injury or death.
Overriding a safety system may result in unsafe
equipment, which may result in serious injury or death.
Do not override safety devices.
Blade hazard. Keep hands clear of rotating parts.
Follow lockout procedure before servicing.
Prevent serious injury or death.
Use adequate lifting devices to raise, move and install
booth components.
Prevent serious injury or death.
Electrical installations must be performed by qualied
electricians.
Installation must conform to all national, local, and
provincial codes and standards.
WARNING
WARNING
WARNING
WARNING
5

2.1.2 Operational Hazards
Prevent serious injury or death.
Do not operate machine with guards and/or covers open
or removed.
Prevent serious injury or death.
Only trained and qualied personnel may operate booth.
Prevent serious injury or death.
Never operate spray booth while under the inuence of
drugs, alcohol or while feeling ill.
Prevent serious injury or death.
Always wear personal protective equipment (PPE)
appropriate for job.
Read Material Safety Data Sheet for products used in
spray booth.
Shock hazard.
Only a qualied electrician may open electrical control
cabinet.
Disconnect and lockout / tagout all power sources
before adjusting, repairing, or cleaning booth.
WARNING
WARNING
WARNING
WARNING
WARNING
6

2.1.3 Maintenance Hazards
2.1.4 Fire Hazard
No smoking or open flame in or near spray booth. Local fire codes prohibit smoking in the vicinity of spray
painting operations.
Prevent serious injury or death.
Disconnect and lockout / tagout all power sources
before adjusting, repairing, or cleaning booth.
Prevent serious injury or death.
Service, maintenance and adjustments must be
performed by trained and qualied personnel.
Burn hazard. Do not touch hot parts.
Allow to cool before servicing.
Explosion and re hazard.
No smoking or open ame within 50 feet of spray booth.
Prevent serious injury or death.
Always wear personal protective equipment (PPE)
appropriate for job.
Read Material Safety Data Sheet for products used in
spray booth.
WARNING
WARNING
WARNING
WARNING
WARNING
7

Do not store flammable liquids adjacent to or inside spray booth. Read all product labels and instructions.
Do not use any electric powered airless spray rigs, pressure washers or similar equipment when applying a low
flash point solvent or peel coating. Run spray booth exhaust fan to purge dangerous vapors that could ignite or
explode while cleaning or performing maintenance inside spray booth.
AN APPROVED FIRE PROTECTION SYSTEM MUST BE INSTALLED ON YOUR SPRAY BOOTH TO COMPLY
WITH NFPA 33, SECTION 9. PORTABLE FIRE EXTINGUISHERS MUST BE LOCATED IN OR AROUND YOUR
PAINT MIX ROOM PER NFPA 10.
2.2 Safety Decals
Electrical Shock Hazard
Disconnect electric before service.
More than one disconnect switch may
be required to disconnect electric from
equipment.
Equipment must be properly grounded.
Failure to follow these instructions can result
in death or electrical shock.
Risque de Choc Electrique
Débrancher le courant avant l’entretien.
Plus qu’un interrupteur de verrouillage peut
être requis pour débrancher le courant
électrique de cet appareil.
L’appareil doit être connecté à une source de
courant reliée à la terre.
Le non-respect de ces instructions peut
entraîner de la mort ou des chocs électriques.
DANGER
DANGER
Printed in the USA
Imprimé aux É.-U.
Severe Injury Hazard
Do not enter equipment while in operation.
Equipment may start automatically.
Do not operate with door open.
Installation, operation and service must be done by a trained
technician only.
Failure to follow these instructions can result in death or injury.
Risque de Blessures Graves
Ne pas entrer dans cet appareil pendant l’opération.
Cet apparell peut démarrer automatiquement à tout moment.
Ne pas opérer l’apparell avec la porte ouverte.
L’installation, l’opération et l’entretien doit être eectués par un
installateur éprouvé.
Le non-respect de ces instructions peut entraîner de la mort ou des
blessures.
DANGER
DANGER
Printed in the USA
Printed in the USA
To protect you and others against death or serious injury, all
applicable labels shown must be on the booth and must be legible.
If any of these labels are missing or cannot be read, contact your
RTT for replacement labels.
WARNING
Improper installation, adjustment, alleration, service or maintenance can result in death, injury
or property damage. Read the Installation, Operation and Service Manual thoroughly before
installing or servicing this equipment.
Installation, modication, reglage ou maintenance incorrectes peuvent provoquer de la mort, des
blessures ou des dégâts matériels. Liser attentivement le manuel d’installation, d’operations et
d’entretien avant l’installation ou l’entretien de cet équipment.
This heater must be installed in accordance with the manufacturer’s instructions and local
codes. In the absence of local codes, follow the National Fuel Gas Code, ANSI Z223.1 / NFPA
54 of the CAN/CSAB149 installation code.
Cet aérotherme doit être installé en accord avec les instructions du fabricant et les régulations
locaux. S’il n’y a pas des régulations locaux, l’installation doit être en accord avec le Code
National de Gaz de Carburant, ANSI Z223.1 / NFPA 54 ou le Code d’installation, CAN/
CSA-B149.
WARNING
P/N 01010431 Rev A
8

2.3 NFPA 33 Standards for Spray Application
Reprinted with permission from NFPA 33-2016, Standard for Spray Application Using Flammable or Combustible
Materials, Copyright © 2010, National Fire Protection Association, Quincy, MA. This reprinted material is not the
complete and official position of the NF A on the referenced subject, which is represented only by the standard
in its entirety. The following is section 10 from NFPA 33:
10.1 General. Maintenance procedures shall be established to ensure that all spray application apparatus
and processes are operated and maintained in accordance with the manufacturers specifications and the
requirements of this standard. Maintenance shall be the responsibility of the users of the apparatus and
processes.
10.1.1 Spray application operations shall not be conducted outside predetermined spray areas.
10.1.2 Inspection of extinguishing systems shall be conducted to ensure that the performance of the
extinguishing system components will not be aected by overspray and residues.
10.2 Combustible Deposits.
10.2.1 All spray areas shall be kept free of excessive accumulation of deposits of combustible residues.
10.2.2 Combustible coverings (thin paper, plastic) and strippable coatings shall be permitted to be used to
facilitate cleaning operations in spray areas.
10.2.2.1 Where plastic covering is used, it shall be of a static dissipative nature or shall have a maximum
breakdown voltage of 4 kV to prevent accumulation of a hazardous static electric charge.
10.2.3 If residue accumulates to excess in booths, duct or duct discharge points, or other spray areas, all
spraying operations shall be discontinued until conditions have been corrected.
10.3 High-Pressure Hose Lines. High-pressure hose lines that convey flammable or combustible coating
material in “airless” spray application operations shall be inspected daily and shall be repaired or replaced as
necessary. Hose lines and equipment shall be located so that, in the event of a leak or rupture, coating material
will not be discharged into any space having a source of ignition.
10.4 Maintenance Procedures
10.4.1 Overspray collectors shall be inspected daily and clogged filters shall be discarded and replaced.
Maintenance procedures shall be established to ensure that overspray collector filters are replaced before
restriction to airflow is reduced below the minimum established by Section 7.2.
10.4.2 At the close of the dayʼs operation, all discarded overspray collector filters, residue scrapings, and
debris contaminated with residue shall be removed immediately to a designated storage location, placed in a
noncombustible container with a tight-fitting lid, or placed in a water-filled metal container.
10.5 Waste Containers.
10.5.1 Approved waste containers shall be provided wherever rags or waste are impregnated with sprayed
material, and all such rags or waste shall be deposited therein immediately aer use. The contents of waste
containers shall be placed in a designated storage location.
10.5.2 Waste containers containing flammable liquids shall be located in ventilated areas that meet the
requirements of Chapter 7. Such areas shall also meet the electrical area classification requirements of 6.5.5.
9

10.5.3 Waste containers for flammable liquids shall be constructed of conductive materials and shall be bonded
and grounded.
10.5.4 Waste containers for flammable liquids shall be handled and stored in accordance with Chapter 8.
10.6 Clothing. Employeesʼ clothing contaminated with sprayed material shall not be left on the p emises
overnight unless kept in metal lockers.
10.7 Cleaning Operations.
10.7.1 Scope. This section shall apply to the use of flammable or combustible liquids for the flushing and
cleaning of equipment.
10.7.2 Liquids. Class I and Class II liquids used in cleaning operations shall be in original shipping containers or
in listed safety containers.
10.7.3 Location. Cleaning operations using flammable or combustible liquids shall be conducted inside a spray
area with ventilating equipment operating or in ventilated areas that meet the requirements of Chapter 7. Such
areas shall also meet the electrical area classification requirements of 6.5.5.
10.7.4 Equipment. Equipment using flammable or combustible liquids shall meet the requirements of 6.5.5 and
shall be bonded and grounded.
10.7.5 Manual Cleaning. Individual manual cleaning operations shall be limited to not more than 4 L (1 gal) of
flammable or combustible liquid for each cleaning operator.
10.7.6 Liquid Storage. Flammable and combustible liquids shall be handled and stored in accordance with
Chapter 8. Containers used for handling, storage, or recovery of Class I liquids shall be constructed of conductive
materials and shall be bonded and grounded.
10.8 Solvent Distillation Units (Solvent Recyclers).
10.8.1 Scope.
10.8.1.1 Section 10.8 shall apply to solvent distillation units having distillation chambers or still pots that do not
exceed 227 L (60 gal) capacity and are used to recycle Class I, Class II, and Class lIlA liquids. [30:19.6.1.1]
10.8.1.2 This section shall not apply to research, testing, or experimental processes; to distillation processes
carried out in petroleum refineries, chemical plants, or distilleries; or to distillation equipment used in dry
cleaning operations. [30:19.6.1.2]
10.8.2 Equipment. Solvent distillation units shall be approved or shall be listed in accordance with ANSI/UL
2208, Standard for Solvent Distillation Units. [30:19.6.3]
10.8.3 Solvents. Solvent distillation units shall only be used to distill liquids for which they have been
investigated and that are listed on the unitʼs marking or contained within the manufacturerʼs literature.
[30:19.6.3]
10.8.3.1 Unstable or reactive liquids or material shall not be processed unless they have been specifically listed
on the systems markings or contained within the manufacturerʼs literature. [30:19.6.3.1]
10

10.8.4 Location [30:19.6.4]
10.8.4.1 Solvent distillation units shall only be used in locations in accordinance with their approval or listing.
10.8.4.2 Solvent distillation units shall not be used in basements.
10.8.4.3 Solvent distillation units shall be located away from potential sources of ignition, as indicated on the
unitʼs marking.
10.8.5 Liquid Storage. Distilled liquids and liquids awaiting distillation shall be stored in accordance with
Chapter 6 of NFPA 30.
10.9 Spontaneous Ignition Hazards. The same spray booth shall not be alternately used for dierent types of
coating materials if the combination of the materials is conducive to spontaneous ignition, unless all deposits of
the first-used coating material are removed from the booth and exhaust ducts prior to spraying with the second
coating material.
10.10 Chlorinated Solvents. Coating materials containing chlorinated solvents shall not be used with spray
application apparatus or fluid-handling equipment if the chlorinated solvent will come into contact with
aluminum within a piping system, pump, enclosed container, or any enclosure that is capable of being
pressurized by the potential reaction. This shall apply even if the container or system has been constructed with
pressure relief devices.
10.11 Smoking. Signs stating NO SMOKING OR OPEN FLAMES in large letters on contrasting color background
shall be conspicuously posted at all spray areas and paint storage rooms.
10.12 Hot Work. Welding, cutting, and other spark producing operations shall not be permitted in or adjacent to
spray areas until a written permit authorizing such work has been issued. The permit shall be issued by a person
in authority following his or her inspection of the area to ensure that precautions have been taken and will be
followed until the job is completed.
11

3.. Spray to Waste Batch Powder Booth
3.1 Three-Stage Filter System (Pre-Filter, Primary Pocket Filters andFinal Filters)
3.2 Manometer
The manometer is used as a gauge to let you know when your exhaust filters need to be changed. Exhaust filters
typically have a static rating of .5 inches of water.
Some booths are set up to use additional filters or optional filters that have a higher static rating than the
standard .5 inches of water. Check your filter spec sheet to find the exact rating of the filter, but for this guide we
will use the standard .5 inches of water column.
Step 1 - Locate the Manometer
The manometer needs to be located where it can be read daily by the paint department. Locate it on the booth
where there are no obstructions such as shelving or walls to interfere with viewing the manometer. Remember,
without the manometer, you will have no idea how clogged your exhaust filters are, and therefore, no idea if the
booth is performing correctly.
The manometer needs to be installed close to the exhaust filter wall to keep the tubing length to a minimum.
Excess tubing length will reduce the accuracy of the manometer. There will be a high port and a low port on the
top of the manometer. The high port will need to connect to the work chamber, and the low port will need to
connect to the chamber on the suction side of the filter grid.
Low Pressure
Port
(Back Side of
Filters)
Filter Grid Wall
High Pressure Port
(Front Side of Filters)
12

Step 2 - Install the Hose Barbs
Drill a hole in the booth wall just large enough for the plastic hose barb to fit through (approx. 13/32). Then
install the washer and nut on the back side. Be careful not to over tighten or you may strip the plastic threads.
Washer and Nut
Step 3 - Mount the Manometer
Mount the manometer on the wall of the booth and ensure it is level using the included bubble level at the
bottom of the manometer. If the manometer is not level, it will not be accurate.
Step 4 - Fill the Manometer
Turn the “Zero Set” knob counter clockwise until it stops, then turn the knob clockwise 3 full turns. This will
place the adjustment knob in the middle of its travel range. Remove the fill plug at the top of the manometer
and slowly fill with the red fluid. You will not need the entire bottle. Stop filling as soon as you can see the red
fluid enter the clear tube at the bottom of the manometer. Then use the “Zero Set” adjustment knob to get the
red fluid to sit on the 0 mark. If you overfill the gauge, remove the excess fluid by inserting a pipe cleaner through
the fill port to blot up excess oil. Once the red fluid is set on zero, replace the fill cap.
Inside Wall of
Booth Plastic Hose Bart
Top Mounting
Hole
Bottom Mounting Hole
(Slotted to easily adjust level)
Bubble Level
13

Step 5 - Create Your Baseline Measurement
IMPORTANT: All of the filters in the booth need to be installed and new in order to get an accurate baseline. If
the filters have already been used, you will need to remove them and install new, clean filters.
With the new clean filters installed, turn on your exhaust fan. If your exhaust fan is connected to a VFD to control
the speed of the fan, make sure it is set to run at full speed. You will notice the red fluid should move up the scale
and then settle at a number.
14

The number will be dierent from booth to booth, but that does not matter. This is just a baseline setting.
Wherever the red fluid stops is where you will place your Green arrow. In this example, the red fluid stopped at
.25 inches of water column. So because we know our filters are rated for .5 inches of water column, and we know
that with clean filters the fan is drawing .25 inches of water column, we simply add the two numbers together to
tell us where the filters will pack out.
.25 inches of water + .5 inches of water = .75 inches of water total
Step 6 - Set Your Change Filter Arrow
Now that the baseline is set, measure up the scale .5 inches of water to allow for your filters to pack out and that
is where you will place the Red arrow.
At this point, your manometer is set up and ready to use. You should never need to move the arrows once they
are placed. Always check the manometer before turning the fan on to ensure the red fluid is sitting on the 0
mark. If the fluid is not on 0, simply turn the “Zero Set” knob to adjust the fluid to zero before starting the fan.
Starting Pressure
(Fan on with
Clean Filters)
End Pressure
(Change Filters)
15

3.3 Air Solenoid Valve
This section contains literature pertaining to the installation, operation and maintenance of the above
component.
As a built in safety feature, your RTT powder booth is provided with a two-way solenoid valve for the purpose
of ensuring that pressurized air is only available to the powder application equipment if the powder booth is
operating properly.
The function of this valve is to interrupt the supply of compressed air to the powder application equipment
under certain conditions. This is done to prevent powder coating from occurring when the powder booth is
not operating as designed or if any booth doors are open (if equipped). The air solenoid valve is electrically
interlocked with the powder booth exhaust fan(s). If the optional switches are purchased, it is also interlocked
with the product and personnel doors (if equipped). If the fan is not operating, or if a door (if equipped) is open
for longer than a few seconds, the air solenoid valve will shut off the flow of pressurized air to the powder
application equipment.
The unit should be installed down stream of any regulators and filters and upstream of the powder application
equipment. It should be located as close as possible to the fitting to which the powder application equipment
connects in order to insure rapid loss of supply pressure.
Booth
Exhaust
Fan
Control Panel
L1 of Customer provided 3 Phase power
L2 of Customer provided 3 Phase power
L3 of Customer provided 3 Phase power
120VAC Hot Wire provided by customer
120 VAC Nuetral Wire provided by customer
Ground Wire provided by customer
Booth Door Limit
Switch #1
Booth Door Limit
Switch #1
Booth
Light
Fixture
Booth
Light
Fixture
Booth
Light
Fixture
Booth
Light
Fixture
Booth
Light
Fixture
YL
YL
YL
YL
YL
YL
YL
YL
YL
YL
BK GN
WT
BK GN
WT
BK GN
WT
BK GN
WT
BK GN
WT
#1 #2 #3 #4 #5
2 Ground Bar
5 Ground Bar
Nuetral Block
RD
GN RD
Compressed Air Line Compressed Air Line
Air Com-
pressor
Paint
Gun
16

3.4 Exhaust Fans
This section contains literature pertaining to the installation, operation and maintenance of the above
component.
Your RTT powder booth is equipped with a Aerovent tubeaxial fan for exhausting air from the powder booth.
This type of fan was designed specifically for use in applications such as powder booths where the fan drive
motor must be located out of the air stream. The fan blades are constructed of non-sparking aluminum for
added safety. The fan and drive motor have been sized for the specific air flow of your booth, in accordance with
all applicable environmental and safety requirements.
Belt Driven Tubeaxial Fans
The Aerovent model BTABD is a belt driven tubeaxial fan that is designed specifically for reliable and cost
eective air movement in paint spray booth applications. Model BTABD exhaust fans are designed for
applications requiring either a horizontal or a vertical airflow direction.
> Sizes and Performance
> Arrangement 9 – belt driven
> Available in sizes from 12" to 42" diameter
> Capacity from 1,295 to 36,131 CFM
>Static pressures to 1.25" w.g.
Construction Features
> Aluminum non-sparking propeller dynamically balanced for quiet, vibration-free operation
> Continuously welded, heavy-gauge, corrosion resistant, enamel coated steel housing with pre-
punched inlet and outlet flanges
> OSHA belt guards are standard
> No-relubricable "sealed for life" ball bearings in mono-block housing to ensure reliable bearing
performance
> Designed for continuous duty
Housing
Housings are heavy-gauge, hot-rolled steel construction, continuously welded and ground smooth to assure
efficient airflow through the housing. Inlet and outlet flanges are integrally rolled and punched to allow
attachment to ductwork or accessories as necessary. When an inlet bell is required, the housing is formed with a
bell shaped inlet instead of the inlet flange, eliminating the need for and the expense of a separate inlet bell.
Drive Isolated from Airstream
The shaft and bearing assembly is mounted within an inner cylinder isolated from the airstream. The v-belt drive
assembly is enclosed in an aerodynamically designed belt tube which maximizes fan efficiency, minimizes air
blockage and reduces noise generation. An access door on the belt tube is standard.
17

Propeller
> Die Cast aluminum construction
> Unique BackSwept profile with airfoil cross section
> Adjustable pitch blades with factory set blade angles
>Split taper lock bushing for superior holding power on sha
> Generates low wake turbulence for low noise emission
Dimensional Data
'A' ID. I.D.
'B' DIA. B.C.
'C' DIA. O.D.
('E') 'F' Holes
(Only size 12 holes are
straddling center line)
Max.
7.50"
Airflow
'D'
Belt
Guard
Size A B C D E F Max. Mtr
Frame
12 12.25 13.88 14.88 12.00 8 .44 145T
14 14.25 15.88 16.88 12.00 8 .44 145T
16 16.25 17.88 19.00 12.00 8 .44 145T
18 18.25 19.88 21.00 12.00 8 .44 145T
24 24.25 25.88 27.13 15.50 8 .56 184T
30 30.38 31.88 33.25 15.50 8 .56 184T
34 34.38 35.75 37.38 15.50 8 .56 184T
36 36.38 37.88 39.38 15.50 16 .56 184T
42 42.50 43.75 45.50 15.50 16 .56 215T
R33867Dimensions shown are in inches unless otherwise indicated.
Dimensions are not to be used for construction.
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Typical Specifications
Model BTABD, Arrangement 9 – Belt Driven
Fans, where indicated on drawings and schedules, shall be Model BTABD, Arrangement 9, V-belt driven, axial
flow type as manufactured by Aerovent, Minneapolis, Minnesota, and shall be of the size and capacity
as indicated in the fan schedules. Model BTABD fans have been tested in an AMCA registered laboratory in
accordance with AMCA 210 and AMCA 300 test codes for both air and sound. In addition each unit shall be
factory run tested and final trim balanced prior to shipment.
CONSTRUCTION — Fan casings shall be welded of ASTM A-1011 low carbon, commercial quality 12-gauge
hot rolled steel in sizes through 20" diameter, 10-gauge hot rolled steel from 24" diameter thruoough 28"
diameter, and 7-gauge hot rolled steel on sizes greater than 30" in diameter. Inlet and outlet flanges shall
be integrally rolled mechanically from fan casing sheet steel to insure concentricity and alignment..
Accuracy and uniformity of the fan casing shall be insured through the use of welding jigs and fixtures. The
motor base plate shall be fabricated of minimum 3∕16" steel plate and welded to the exterior of the fnaan
casing.
PROPELLERS — Propellers shall be constructed of non-sparking, die cast aluminum hubs and blades. Fan
blade pitch angle shall be preset at the factory. Propellers shall be secured to the fan shaft with a taper lock
bushing.
SHAFT & BEARINGS — All fans shall be supplied with a shaft of AISI -1045 steel material that has been
properly turned, ground, and polished for accuracy. The sha shall be supported by a matched set of non-
relubricable bearings that are housed in a cast aluminum monoblock. All fan bearings are to have an L-10
minimum life as defined by AFBMA of at least 60,000 hours.
DRIVES — Fan drives shall include cast iron sheaves and non-static conducting belts. Fans equipped with
motors up to and including five horsepower will be furnished with a variable pitch type drive sheave to
allow for minor speed adjustment of the fan propeller during system balance. Fans equipped with larger
motors will be furnished with a fixed drive sheave. A belt guard is to be provided to afford personnel safety and
general traffic protection.
MOTORS — Fan motors shall be manufactured in accordance with current applicable standards of IEEE and
NEMA. They shall be foot-mounted, NEMA standard, TEFC or ODP, continuous duty, ball bearing with class
“B” insulation.
BALANCING — The propeller assembly shall be statically and dynamically balanced in accordance with ANSI/
AMCA 204-05 “Balance Quality and Vibration Levels for Fans” to Fan Application Category BV-3, Balance Quality
Grade G6.3. In addition, belt driven fan propellers shall be balanced on the fan shaft after final assembly in the
fan casing, in the manufacturing facility to the following peak velocity values, filter-in, at the fan test
speed:
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