GAYLORD CG3-UVi-SPC Series User manual

Rev 04
Technical Manual
Operation, Maintenance &
Installation
for
Model CG3-UVi-SPC Series
Ventilators
GAYLORD INDUSTRIES
10900 SW Avery Street – Tualatin, Oregon 97062 USA
Email: [e-mail] Toll Free 800-547-9696 – Fax [phone]
www.gaylordventilation.com

All rights reserved. No part of this book may be reproduced, stored in a retrieval
system, or transmitted in any form by an electronic, mechanical, photocopying,
recording means or otherwise without prior written permission of Gaylord
Industries.
©Copyright 2015, Gaylord Industries
The manufacturer reserves the right to modify the materials and
specifications resulting from a continuing program of product
improvement or the availability of new materials

Page iii

Page iv
TABLE OF CONTENTS
Chapter 1 – Introduction Page
About This Manual ………………………………………………………………………………………………………….............. 1-1
Ventilator Description …………….…………………………………………………………………………………………………… 1-2
Model Number Sequence …………………………………………………………………………………………………………….. 1-3
Explanation of Damper Options …………………………………………………………………………………………………… 1-5
Chapter 2 – Principles of Operation
Principle of Operation Overview …………..……………………………………………………………………………………… 2-1
Grease Extraction / Smoke Removal .…….…………………………………………………………………………………….. 2-2
Optional Continuous Cold Water Mist ..……………………………………………………………………………………….. 2-6
Wash Cycle ………………………… ……………………………………………………………………………………………………….. 2-8
Internal Fire Mode ..……………………………………………………...………………………………………………………………. 2-14
Fire Extinguishing Systems ……………………………………………….…………………………………………………………. 2-16
Chapter 3 - Daily Operation
Starting the Exhaust Fan ………………...…………………………………………………………………………………………… 3-1
Turning Off the Exhaust Fan and Starting the Wash Cycle …………………………………………………………. 3-6
Recommend Detergent ………………………………………………………………………………………………………………… 3-10
Chapter 4 – Maintenance
Operator Preventive Maintenance ……………………………………………………………………………………………… 4-1
Preventive Maintenance Required by Code ………………………………………………………………………………… 4-8
UV System - Scheduled Preventive Maintenance ……………………………………………………………………….. 4-9
Chapter 5 - Troubleshooting
Troubleshooting ………………………………………………………………………………………………………………………….. 5-1
Chapter 6 – Testing and Repair
Measuring Airflow ............................................................................................................................ 6-1
Make-Up Air Guidelines ……………………………………………………………………………………………………………….. 6-5
Replacing UV Lamps …………………………………………………………………………………………………………………….. 6-7
Replacing UV Lamp Sockets ………………………………………………………………………………………………………….. 6-13
Replacing UV Ballast ……….……………………………………………………………………………………………………………. 6-19
Main Electrical Raceway Ventilation Fan …………………………………………………………………………………….. 6-30
UV Module Ventilation Fans …………………………………………………………………………………………………………. 6-32
High Temperature Shutdown Controller ……………………………………………………………………………………….. 6-36
Safety Interlock Pressure Switch ……………………………………………………………………………………………………. 6-37
UV Ventilation Control Board …………………………………………………………………………………………………………. 6-37
Replacing UV Module Access Door Gasket ……………………………………………………………………………………. 6-40
Replacing UV Module Plate Gasket ……………………………………………………………………………………………….. 6-41
Damper Motor ……………………………………………………………………………………………………………………………… 6-42
Smoke Pollution Control System (SPC) – Overview ……………………………………………………………………….. 6-46
Testing Voltages at the Spark Plug Terminal Clips ………………………………………………………………………… 6-47
Testing ESP Cells …………………………………………………………………………………………………………………………….. 6-49
Replacing Ionizing Wires ………………………………………………………………………………………………………………… 6-51
Shorting Cell Plates ………………………………………………………………………………………………………………………… 6-52
Testing Plunger Safety Switch ……………………………………………………………………………………………………….. 6-52
Removing Electrical Chassis …………………………………………………………………………………………………………… 6-54
Transformer Voltage Test ………………………………………………………………………………………………………………. 6-55
Page vi

Page v
TABLE OF CONTENTS
Chapter 7 - Parts
Parts - Ventilator ............................................................................................................................... 7-1
Parts - UV Lamp Module ………………………………………………………………………………………………………………. 7-4
Parts – Main Electrical Raceway …………………………………………………………………………………………………… 7-5
Parts – Miscellaneous ……………………………………………………………………………………………………. 7-7
Parts – ESP Cells …………………………………………………………………………………………………………….. 7-8
Parts – Miscellaneous Smoke Pollution Control …………………………………………………………….. 7-9
Chapter 8 – Wiring Diagrams
Wiring Diagrams ………………………………………………………………………………………………………………………….. 8-1
Appendices
Sample Ventilator Nameplate ……………………………………………………………………………………………………… A-1
Installation Requirements ……………………………………………………………………………………………………………. B-1
Cell Rotation Log Sheet ………………………………………………………………………………………………… C-1
Ventilator Start-Up Inspection and Tests – Overview …………………………………………………………………… D-1
Pre Start-Up Check List …………………………………………………………………………………………………………………. D-1
Start-Up Inspection and Tests Report Forms ………………………………………………………………………………… D-3
Limited Warranty ………………………………………………………………………………………................ Inside Back Cover

Page vi
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__________________________________________________________Chapter 1- Introduction, Page 1-1
About this Technical Manual
The purpose of this manual is to provide the Operator, Maintenance and Service personnel instructions
for operating, maintaining, troubleshooting and repairing the Gaylord Ventilator Model CG3-UVi-SPC
Series. Ventilators incorporating UV Systems, most maintenance and all repairs must be performed by a
trained and certified service company. This manual also includes information and guidance to
contractors for initial installation of the Ventilator.
The manual is divided into chapters for easy reference to a particular subject. The pages in the chapters
are numbered with the chapter number, then a dash, and then the page number. So for example pages
in Chapter 2 are numbered 2-1, 2-2, 2-3 etc. Figures and Tables are numbered in a similar manor. For
example Figure 5-3-2 is on page 5-3 and is the second figure. Please keep your manual in a convenient
location for so it can be accessed easily.
If you have any questions or concerns with the installation, operation, maintenance or service of your
Gaylord Ventilator, please contact Gaylord Industries;
Web: www.gaylordventilation.com
E-Mail: [email protected]
Main Phone: [phone]
Toll Free: 800-547-9696
Safety
It is important that the operator read Chapter 2, Principle of Operation, Chapter 3, Daily Operation and
Chapter 3, Maintenance, before operating the Ventilator for the first time. Particular attention should
be given to all the Caution and Warning statements.
Related Technical Manuals
CG3-UVi-SPC-SPC Series Ventilators are controlled by a Gaylord Command Center. The model number
of the Command Center is dictated by when the Ventilator was purchased. Typical models are C-6000
and C-7000 Series. The model number of your Command Center can be found on the nameplate located
on the back of the electrical compartment door. All Installation Operation and Maintenance Manuals
may be downloaded from the Gaylord website: www.gaylordventilation.com or be obtained by calling
Gaylord Industries.

Chapter 1- Introduction, Page 1-2__________________________________________________________
Ventilator Description Overview
The Gaylord Model CG3-UVi-SPC Series is a 3 stage Ventilator containing a high efficiency Grease
Extractor, Ultraviolet Light (UV) and Electrostatic Smoke Pollution Control (SPC) in one integral unit
(Refer to Figure 1-3-1). Stage 1, the primary Grease Extractor, removes the larger grease particulate, key
to the efficient operation of the UV and Smoke Pollution Control sections. Stage 2 is an Ultraviolet Light
System that dramatically reduces grease accumulation in the Pollution Control section, exhaust plenum,
ductwork and exhaust fans. This section contains UV Modules each having six high efficiency lamps
powered by high tech solid state ballasts. Stage 3, the Smoke Pollution Control section, contains
electrostatic precipitator ESP Cells to remove smoke particulate for the airstream.
The Ventilator incorporates six wash manifolds that connect to the Wash Control Cabinet. The Wash
Control Cabinet contains the Command Center that controls the exhaust fan and Wash Cycles. The
primary grease extractor, UV and SPC sections are automatically washed with hot detergent injected
water each time the exhaust fan is shut off, washing the accumulated grease and smoke particles out of
the Ventilator and into the building drain system.
UV and SPC Safety
The Ventilator has many safety features to ensure operators are not exposed to UV light or to high
voltage from the ESP Cell high voltage transformers. The access doors into the Extraction Chamber, UV
Lamp Modules, and the ESP Cells are monitored so if any door is opened the UV Lamps and the ESP Cells
immediately go off. In addition a pressure switch monitors the exhaust flow to shut off the lamp if the
airflow is below a minimum level.
Approvals
The Ventilator is ETL listed to UL Standard 710, 710C and 867. In addition the Ventilator has been tested
for UV light omissions, in compliance with the ACGIH (American Conference of Governmental and
Industrial Hygienist) requirements for exposure to UV light. The Ventilator is also listed by ETL to NSF
Standard Number 2.

__________________________________________________________Chapter 1- Introduction, Page 1-3
Description Overview – Cont.
Stage 3 SPC
Section
Stage 2 UV
Section
Stage 1 Grease
Extractor Section
UV Module
Particulate Separator
3 Position Damper
Exhaust Inlet
UV Module Access Door
Drain
Sloping Grease Gutter
Figure 1-3-1
Typical Section View of Model CG3-UVi-SPC
Series Ventilator
Extractor Access Door
Extractor Wash
Manifold
ESP Cell
Particulate Separator/UV
Module Wash Manifold
ESP Cell Access Door Shown
In Open Position
Lower SPC & Upper UV
Wash
Exhaust Duct Collar
Upper SPC Wash Manifolds

Chapter 1- Introduction, Page 1-4__________________________________________________________
Model Number Sequence
The CG3-UVi-SPC Series model numbers are made up of an alphabetic prefix followed by a series of
alphabetic and/or numeric suffixes to designate the style of ventilator and various options. Sequence of
model numbers is as follows.
1._____
2._____
3._____
4._____
5.______
6._____
7._____
8. ______
9. _______
Series
Damper
Type
Style
Low
Profile
Design
(Option)
Style of
Built in
Make-up
Air If
Applicable
Custom
Air If
Applicable
Cold
Water
Mist, If
Applicable
Autostart
If
Applicable
Front to
Back
Dimension
of the
Ventilator
in Inches
Explanation of Prefixes and Suffixes
1. Series
CG3-UVi-SPC ………… Water Wash Ventilator with ultraviolet light and smoke pollution control
feature.
2. Damper Type
Blank Space …………. Electrically activated three position damper located at air inlet slot (Refer to
Figure 1-5-1).
FDD……………………… Same as CG3-UVi-SPC except inlet damper is fixed and has a fuse link activated
fire damper located at the duct collar (Refer to Figure 1-6-1)
FDT ……………………….
Inlet damper is fixed and no damper motor, and has fuse link activated fire
damper located at the duct collar with a thermostat to detect fire to send
notification (Refer to Figure 1-5-3)
FDL ….………………….. Same as CG3-UVi-SPC except a bracket (Fire Damper Lockout) has been added to
prevent the damper from closing to the fire position (Refer to Figure 1-5-2)
ND ………….…………… Same as CG3-UVi-SPC except inlet damper is fixed and has no fire damper (Refer
to Figure 1-6-2).
3. Style
BDL ……………………... Wall mounted canopy.
BDL-BB ................. Island style for back-to-back cooking equipment using two extraction chambers
and two separate exhaust ducts.
BBC ……………………… Island style for back-to-back cooking equipment using two extraction chambers
with one common exhaust duct.
BDL-DS ………………… Island style for back-to-back cooking equipment using one extraction chamber
with two inlet slots. Has common exhaust duct.
BDL-DS-CL …………… Island style for single line of cooking equipment.
4. Profile
LP........................... Low Profile. Reduced height of front face of Ventilator and sloping end panels.

__________________________________________________________Chapter 1- Introduction, Page 1-5
Explanation of Prefixes and Suffixes – Cont.
5. Style of Built In Make-Up Air (If Applicable)
MAW ……………………. Front face make-up air using perforated stainless steel panels.
MAR ……………………… Front face make-up air using registers or grills.
MAI .......................... Internal short circuit make-up air.
MAW/MAI …………… Combination of MAW and MAI design.
MAR/MAI …………….. Combination of MAR and MAI Design.
6. Custom Air (If Applicable)
CA ………………...……… Additional baffles added to reduce the air volume over specific types of cooking
equipment.
7. Cold Water Mist (If Applicable)
CM ………………………… Addition of cold water manifold with spray nozzles at the air entry slot for
application over solid fuel burning cooking appliances (Refer to Figure 2-6-1).
7. Autostart Option
Blank Space ............. Indicates the hood section does not have Autostart system as required by IMC.
AS ……………………..…. Indicates the hood section has Autostart conforming with the IMC requirement.
8. Front to Back Dimension
In Inches ………………. Indicates front to back dimension of the Ventilator, or the overall width of an
island style.

Chapter 1- Introduction, Page 1-6__________________________________________________________
Explanation of Damper Options
1. CG3-UVi-SPC Ventilator – This is the standard Ventilator
and incorporates a damper at the air inlet slot that
during a wash mode closes forward by and electric
motor to seal off the inlet slot and opens to the exhaust
position when the exhaust fan is started. During a fire
condition a thermostat activates the damper motor
which closes the damper backwards to the fire position
and stays closed until the thermostat drops below its set
point and then closes to the wash position.
2. CG3-UVi-SPC-FDL Series – The FDL in the model number
stands for Fire Damper Lockout. This Ventilator
incorporates the same inlet damper as the CG3-UVi-SPC
that during a wash mode closes forward by and electric
motor to seal off the inlet slot and opens to the exhaust
position when the exhaust fan is started. The main
difference is the CG3-UVi-FDL has a Fire Damper
Lockout (FDL) bracket added that prevents the inlet
damper from closing to the fire position, so it does
NOT have a fire damper. This Ventilator includes a
thermostat so that in the event of a fire send a signal is
sent to the building fire alarm systems.
3. CG3-UVi-SPC-FDT Series – The FDT in the model
number stands for a fuse link Fire damper in the Duct
collar with a Thermostat. The fire damper is weighted
and when the fuse link reaches its melting point, the
damper closes. When the thermostat reaches its set
point, a signal is sent to the building fire alarm
systems.
Figure 1-6-3
Section View
CG3-UVi-SPC-FDT
Figure 1-6-1
Section View
CG3-UVi-SPC
Figure 1-6-2
Section View
CG3-UVi-SPC-FDL

__________________________________________________________Chapter 1- Introduction, Page 1-7
Explanation of Damper Options – Cont.
4. CG3-UVi-SPC-FDD Series – The FDD in the model
number stands for Fire Damper in the Duct collar. The
fire damper is weighted and when the fuse link
reaches its melting point, the damper closes. There is
no thermostat and no signal is sent to the building fire
alarm system.
5. CG3-UVi-SPC-ND Series – The ND in the model number stands
for No Damper.
Figure 1-7-1
Section View
CG3-UVi-SPC-FDD
Figure 1-7-2
Section View
CG3-UVi-SPC-ND

Chapter 1- Introduction, Page 1-8__________________________________________________________
This Page Intentionally Left Blank

__________________________________________________Chapter 2 - Principle of Operation, Page 2-1
Principle of Operation Overview
The Gaylord Model CG3-UVi-SPC Series Ventilator is a high grease extraction efficiency Ventilator that
includes the additional feature of an Ultraviolet Light System that dramatically reduces grease
accumulation in the exhaust plenum, ductwork and exhaust fans, and includes a Smoke Pollution Control
system that will reduce smoke opacity levels below 20% (Refer to Page 2-5 for information on opacity
levels). The Ventilator incorporates a hot water Wash Cycle that automatically washes the accumulated
grease and smoke particles out of the Ventilator and into the building drain system. The standard CG3-
UVi-SPC Ventilator has a full length fire damper located at the air inlet slot, two models have a fire
damper in the exhaust duct collar and one model does not have a fire damper. Refer to Pages 1-6 and 1-
7 for an explanation on fire damper options.
The operation of the exhaust fan and the Wash Cycle is controlled by the Gaylord Command Center
which is located on the face of the Wash Control Cabinet (Refer to Figure 2-1-2). All the plumbing
components, detergent pump and detergent tank are located inside the Wash Control Cabinet (Refer to
Figure 2-1-2 and Figure 2-11-2).
Figure 2-1-1
Typical Command Center
Figure 2-1-2
Typical Wash Control Cabinet

Chapter 2 - Principle of Operation, Page 2-2__________________________________________________
Grease Extraction/Smoke Removal
Overview
The Gaylord “CG3-UVi-SPC” Series Ventilator extracts up to 95% of the grease, dust and lint particles
from the airstream passing through it, when operated and maintained in accordance with design
specifications. This high rate of grease extraction is accomplished by the use of grease extraction
baffles, Particulate Separators and UV lamps and ESP Cells. The following describes the function of each.
Grease Extraction Baffles
When the exhaust fan is started the hot, grease-laden air rising from the cooking surface merges with
the higher velocity air that wipes the front of the cooking equipment and extends, like an air blanket, from
the front edge of the cooking equipment to the air inlet slot of the V entilator. As the air moves
through the V entilator’s extraction chamber at a high speed, it is forced to make a series of turns
around three baffles. As this high velocity air turns around each baffle, the larger particles of grease are
thrown out of the airstream by centrifugal force and collected on the baffles. The extracted grease,
dust and lint are collected in the interior of the ventilator, remaining out of the airstream until
removed daily by the Wash C ycle.
Baffle #1
Important Note: The following description of Baffle #1 is for the standard CG3-UVi-SPC series
Ventilator. For operation of Baffle #1 for series FDL, FDT, FDD, and ND refer to TableT-2-15-1).
This baffle, located at the air entrance of the ventilator, is a three position damper. Position #1
is the Exhaust Mode as shown in Figure 2-3-1 , position #2 is the Wash Cycle Mode as shown
in Figure 2-9-1, and position #3 is the F ire Mode as shown in Figure 2-15-1. When the START
FAN button is pushed on the Command Center, the damper opens to the exhaust mode position
#1 to become the preliminary grease extraction baffle. There is a small sloped grease
collecting gutter on the back side of the damper which drains off liquefied grease to one end of the
Ventilator, preventing it from re-entraining into the airstream.
Baffle #2
This baffle is located on the interior back wall of the ventilator and is a stainless steel pipe,
equipped with brass spray nozzles on 8" to 10" centers (Refer to Figure 2-3-1). During the wash
cycle, hot detergent water is released through the nozzles.
Baffle #3
This baffle is located on the back of the inspection doors (Refer to Figure 2-3-1). This baffle is also a
grease collecting gutter, collecting the grease extracted by the ventilator preventing the contaminants
from dropping back into the high velocity airstream.
Optional Custom Air Baffles
Some Ventilators may be equipped with optional Custom Air baffles, shown dotted, which reduces
the exhaust volume where the baffles occur (Refer to Figure 2-3-1).
Particulate Separator
Once the larger particles of grease have been captured through inertial impaction by the baffles, the
smaller particles will be arrested in the Particulate Separator using the principles of diffusion and inertial
impaction (Refer to Figure 2-3-1). These collected particles will be washed away each day by the Wash
Cycle.

__________________________________________________Chapter 2 - Principle of Operation, Page 2-3
Grease Extraction/Smoke Removal – Cont.
Figure 2-3-1
Exhaust Mode
Baffle #2
Baffle #1
Air Inlet Slot
Baffle #3
UV Lamp
Module
UV Lamps
Optional
Custom Air
Baffles Shown
Dotted
ESP Cells
Exhaust Duct Collar
Particulate
Separator

Chapter 2 - Principle of Operation, Page 2-4__________________________________________________
Grease Extraction/Smoke Removal – Cont.
UV Lamps
Once the baffles and Particulate Separator have collected the grease particles larger than 1 micron, the
UV lamps will break down the remaining grease particles by direct exposure to 254nm light and by the
Ozone, Hydroxyl Radicals and Anionic oxygen created by the 187nm UV light and oxidizing the grease into
a light gray dust. The Ozone will carry down the ductwork and continue to break down the grease
particulate and odor molecules keeping the ductwork much cleaner. The byproducts of this process are
CO2, H20 and the base minerals from the grease and particulate matter coming off of the cooking
surface. The light gray dust that collects on the lamps is washed away each day during the Wash Cycle.
UV Systems are used to remove a high percentage of grease that the baffles and Particulate Separators
cannot remove, offering many benefits to the owner/operator.
The UV Lamps are mounted in an UVi Module which slide into a track downstream of the Particulate
Separator (refer to Figure 2-3-1). The Ballasts are mounted in the front portion of the module and other
electronics are mounted in the electrical raceway (Refer to Figure 6-7-1 and 6-15-1). The Command
Center monitors and displays text indicating the status of the UV System, and Safety Interlocks. Refer to
your Command Center Tech Manual for specific text displayed.
For proper UV operation, the Ventilators must be maintained in good working order. The UV system
must be inspected periodically and the lamps replaced as necessary. The Ventilator, ductwork and
exhaust fan must be inspected in accordance with NFPA-96 or local guidelines, though frequency of duct
cleanings should be significantly reduced. Refer to Chapter 4 for maintenance details.
UV Safety
Caution: Exposure to UV light is harmful to skin and eyes.
The CG3-UVi-SPC Series Ventilator is equipped with panels and Safety Interlocks to protect operators
from direct exposure to UV light. All safety precautions called for in this manual must be followed to
avoid the potential for harm to operators or service personnel. Refer to Page 4-9 for complete
description of safety precautions.
Smoke Removal
The Ventilator removes smoke particles by the use of Electrostatic Precipitator Cells (ESP Cells) located
after the UV section (Refer to Figure 2-3-1). The principle of operation of electrostatic precipitation is
actually quite basic. The Electrostatic Cell is made up of a series of aluminum plates spaced approximately
1/4” (6.35mm) apart (Refer to Figure 2-5-1). Every other plate is energized with 5000 volts of D.C. power
and the alternating plates are grounded. At the entry point of the Cell is a series of thin wires spaced
approximately 4” (101.60mm) apart (Refer to Figure 2-5-1). These wires, referred to as ionizing wires, are
energized with 10,000 volts D.C. and as the smoke particles enter the Cell and pass over the wires they
receive a positive charge. As the charged smoke particles continue through the Cell, the positive plate repels
them and the negative or grounded plate attracts them. Thus, the smoke particles are collected on the
negative plates. The action is efficient, safe and simple.

__________________________________________________Chapter 2 - Principle of Operation, Page 2-5
Grease Extraction/Smoke Removal – Cont.
Basic Facts About Smoke
Smoke particles are extremely small and not visible to the human eye unless thousands of them are
grouped together to form what we see as smoke. Individual particles are measured in units called
microns and one micron equals 1/25,400 of an inch (1/64,516 of a cm).
Smoke generated by commercial cooking equipment has a particulate size of 0.15 microns and it is
these very small particles that smoke abatement equipment must remove from the airstream. The
amount of smoke being discharged from a kitchen exhaust duct is measured in terms of its density,
referred to as opacity - the degree to which emissions block light. A 100% opacity level would be solid
black and 0% would be perfectly clear. Control agencies that have adopted smoke pollution ordinances
are requiring an opacity level of no more than 20%, which is a very light blue smoke.
Typically, heavy smoke producing cooking such as charbroiling creates an opacity level of 60% to 70%.
Opacity readings are taken by the human eye by viewing the smoke being discharged and then
assigning a percentage of opacity to what is seen. Though this method is quite subjective, it is the
method practiced by control agency inspectors who are trained and certified in determining opacity
percentages
Other more technical methods of determining opacity or particulate density are achieved through the
use of opacity meters and cascade impactors. This level of analysis is usually referred to as source
testing. Control agencies occasionally require this type of analysis and if so, the testing is conducted by
state certified contractors which can be quite costly and time-consuming. The efficiency of a pollution
control unit is based on how well it reduces the opacity level of a given airstream. The Gaylord ClearAir
unit will reduce the opacity level below 20%, thereby meeting the requirements of environmental control
agencies.
Figure 2-5-1
Electrostatic Cell
Side View
Figure 2-5-2
Electrostatic Cell
Isometric View

Chapter 2 - Principle of Operation, Page 2-6__________________________________________________
Optional Continuous Cold Water Mist
Overview
Some ventilators may be equipped with optional continuous cold water mist. NFPA-96 requires that all
hoods used over solid fuel burning appliances be equipped with a “spark arrester” to knock down any
embers, created by the burning of solid fuel, to reduce the possibility of embers or sparks being drawn
up into the exhaust duct and fan where it could ignite collected grease. Continuous cold water mist is
one of the acceptable spark arresters.
Continuous cold water mist ventilators incorporate a water manifold with spray nozzles, located at
the lower edge of the air inlet slot (Refer to Figure 2-6-1). The Wash Control Cabinet contains a Cold
Water Mist loop that contains a pressure regulator and pressure gauge (Refer to Figure 2-7-1). The
regulator is adjusted for a flow pressure of 40 PSI. When the exhaust fan is started, the solenoid
valve in the cold water loop in the Wash Control Cabinet opens (Refer to Figure 2-7-1), turning on the
mist nozzles which remain on as long as the exhaust fan is on. The nozzles produce a very fine mist and
are located so
that the entire air stream passes through the mist.
Figure 2-6-1
Optional Cold Water Mist
Cold Water Mist Nozzles