WELLS MANUFACTURING
265 Hobson Street, Smithville, Tennessee 37166
telephone: 800-264-7827
www.wells-mfg.com
IMPORTANT: DO NOT DISCARD THIS MANUAL
This manual is considered to be part of the appliance and is to be given to the OWNER or
MANAGER of the restaurant, or to the person responsible for TRAINING OPERATORS of
this appliance. Additional manuals are available from your WELLS DEALER.
THIS MANUAL MUST BE READ AND UNDERSTOOD BY ALL PERSONS USING OR
INSTALLING THIS APPLIANCE. Contact your WELLS DEALER if you have any
questions concerning installation, operation or maintenance of this equipment.
OWNERS MANUAL
COUNTERTOP
VENTLESS UNIVERSAL
HOOD SYSTEM
for
COUNTERTOP ELECTRIC
APPLIANCES
MODEL
WVU-31CT
Manual Includes
INSTALLATION
USE & CARE
EXPLODED VIEW
PARTS LIST
WIRING DIAGRAM
524
2M-Z17951 REV E (04-22)
IL2732
xi
LIMITED EQUIPMENT WARRANTY
Wells Manufacturing warrants to the original purchaser of new Wells
products to be free from defects in material or workmanship, under normal
and proper use and maintenance service as specified by Wells and upon
proper installation and start-up in accordance with the instructions
supplied with each Wells unit. Wells’ obligation under this warranty is
limited to a period of one [1] year from the date of original installation, or
eighteen [18] months from original invoice date, whichever occurs first.
Defects that occur as a result of normal use, within the time period and
limitations defined in this warranty, will at Wells’ discretion have the parts
replaced or repaired by Wells or a Wells-authorized service agency.
THIS WARRANTY IS SUBJECT TO ALL LISTED CONDITIONS
Repairs performed under this warranty are to be performed by a Wells
authorized service agency. Wells will not be responsible for charges
incurred or service performed by non-authorized repair agencies. In all
cases, the nearest Wells-authorized service agency must be used. Wells will
be responsible for normal labor charges incurred in the repair or
replacement of a warrantied product within 50 miles (80.5 km) of an
authorized service agency. Time and expense charges for anything beyond
that distance will be the responsibility of the owner. All labor will need to
be performed during regular service hours. Any overtime premium will be
charged to the owner. For all shipments outside the U.S.A. and Canada,
please see the International Warranty for specific details. It is the
responsibility of the owner to inspect and report any shipping damage
claims, hidden or otherwise, promptly following delivery. No mileage or
travel charges will be honored on any equipment that is deemed portable.
In general, equipment with a cord and plug weighing less than 50 lb. (22.7
kg) is considered portable and should be taken or shipped to the closest
authorized service agency, transportation prepaid.
CONTACT
Should you require any assistance regarding the operation or maintenance
of any Wells Manufacturing; phone or email our service department. In all
correspondence provide the model number and serial number of the unit
needing service; include the voltage or gas type.
Normal Business Hours: 8:00 a.m. to 4:30 p.m. Central
Telephone: 800-264-7827 Tech Service Option 2
Email: TechService@partstown.com
www.Wells-Mfg.com
WARRANTY EXCLUSIONS
THE FOLLOWING WILL NOT BE COVERED UNDER WARRANTY.
Wells’ sole obligation under this warranty is limited to either repair or
replacement parts, subject to the additional limitations detailed
below. This warranty neither assumes nor authorizes any person to
assume obligations other than those expressly covered by this
warranty.
• Any product which has not been used, maintained, or installed in
accordance with the directions published in the appropriate
installation sheet and/or owner’s manual, including incorrect gas or
electrical connection. Wells is not liable for any unit which has been
mishandled, abused, misapplied, subjected to harsh chemicals,
modified by unauthorized personnel, damaged by flood, fire, or other
acts of nature [or God], or which have an altered or missing serial
number.
• Installation, labor, and job checkouts, calibration of heat controls,
air and gas burner/bypass/pilot adjustments, gas or electrical system
checks, voltage and phase conversions, cleaning of equipment, or
seasoning of griddle surface.
• Replacement of fuses or resetting of circuit breakers, safety
controls, or reset buttons.
• Replacement of broken or damaged glass components, quartz
heating elements, and light bulbs.
• Labor charges for all removable and consumable parts in gas
charbroilers and hotplates, including but not limited to burners,
grates, and radiants.
• Any labor charges incurred by delays, waiting time, or operating
restrictions that hinder a service technician’s ability to perform
service.
• Replacement of parts that fail or are damaged due to normal wear
or labor for replacement of parts that can be replaced during a daily
cleaning routine, such as but not limited to silicone belts, PTFE non-
stick sheets, control labels, knobs, bulbs, fuses, quartz heating
elements, baskets, racks, and grease drawers.
• Any economic loss of business or profits.
• Non-OEM parts. Use of non-OEM parts without Wells’ approval will
void the warranty.
• Units exceeding one [1] year from original installation date, or more
than eighteen [18] months from original invoice date, whichever
comes first.
ADDITIONAL WARRANTIES
• Specific/chain-specific equipment may have additional and/or
extended warranties.
The foregoing warranty is in lieu of any and all other warran�es
expressed or implied and cons�tutes the en�re warranty.
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
1
WARRANTY xi
ELECTRICAL SPECIFICATIONS 1
WARNINGS - ENGLISH 2
WARNINGS - FRENCH 3
CLEARANCES 4
FIRE SUPPRESSION SYSTEM 5
FEATURES & OPERATING CONTROLS 6-7
PRECAUTIONS & GENERAL INFORMATION 8
AGENCY LISTING INFORMATION 9
INSTALLATION 9
Unpacking & Inspection 9
Components 9
Under-Hood Appliance Limitations 10
Service Technician Installation Notes 11
Site Preparation 12
Mechanical Installation 13
Electrical Installation 14-15
ANSUL® INSTALLATION & SETUP 14-15
Fire Suppression System Installation 16
Filter Installation 17
OPERATION 18
Control Panel 18
Operation Lights 18
CLEANING INSTRUCTIONS 19-20
REQUIRED MAINTENANCE & MAINTENANCE LOGS 21-25
TROUBLESHOOTING SUGGESTIONS 26
WIRING DIAGRAM 27
EXPLODED VIEW & PARTS LIST 28-34
PARTS & SERVICE 35
Thank You for purchasing this Wells Manufacturing appliance.
Proper installation, professional operation and consistent maintenance of this appliance will ensure
that it gives you the very best performance and a long, economical service life.
This manual contains information and instructions for the ventless ventilation hood, its use and care.
For information regarding cooking appliance(s), please refer to the manufacturer’s operation manual.
TABLE OF CONTENTS
ELECTRICAL SPECIFICATIONS
INTRODUCTION
Model Volts Amps Power Supply
WVU-31CT 208/240V 1.9 For supply connection use #12 AWG copper wire only.
2
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
WARNINGS - ENGLISH
IMPORTANT: DO NOT DISCARD THIS MANUAL
This manual is considered to be part of the appliance and is to be given to the OWNER or
MANAGER of the restaurant, or to the person responsible for TRAINING OPERATORS of this
appliance. Additional manuals are available from your WELLS DEALER.
THIS MANUAL MUST BE READ AND UNDERSTOOD BY ALL PERSONS USING OR INSTALLING THIS
APPLIANCE. Contact your WELLS DEALER if you have any questions concerning installation, operation
or maintenance of this equipment.
DANGER
FIRE HAZARD
Fire suppression system must be charged and
certied by an authorized Ansul® distributor.
DO NOT attempt to modify or bypass the re
suppression system.
An uncontrolled re can cause serious injury or
death.
WARNING:
If the re suppression system is
discharged, a buzzer will sound
continuously. The unit will remain
inoperable until the re suppression system
is serviced, recharged and reset by an
authorized Ansul® distributor.
NOTE:
If a REMOTE MANUAL PULL STATION
is installed, moving the ventilator for any
reason may cause the Ansul® system to
discharge.
DANGER - DO NOT BLOCK ACCESS
TO THE FIRE EXTINGUSHING
MANUAL PULL.
DANGER:
SUFFOCATION HAZARD
“Do not attempt to use this ventilator with
gas-red units. This ventilator will not
remove products of combustion. Unvented
exhaust gasses can be deadly.”
WARNING:
SHOCK HAZARD
All servicing requiring access to non-insulated
electrical components must be performed by
a factory authorized technician.
DO NOT open any access panel which
requires the use of tools. Failure to follow this
warning can result in severe electrical shock.
WARNING:
RISK OF INJURY
Installation procedures must be performed by
a qualied technician with full knowledge of all
applicable electrical codes. Failure can result
in personal injury and property damage.
WARNING:
SLIP AND FALL HAZARD
DO NOT operate any grease-producing
cooking appliance unless the grease cup
is properly installed. Oil will drip onto oor
creating a slipping hazard.
WARNING:
DO NOT attempt to wash the HEPA /
CHARCOAL lter pack or pre-lter. Water
absorption will render the lter unusable.
Use of a wet or clogged lter will cause the
ventilator system to shut down. Use only
new, clean Wells® Authorized Service Parts.
Keep spare lter packs on hand to avoid
distrupions. Service Department 1-314-678-
6314.
Exposed surfaces can be hot to the touch and
may cause burns. Allow unit to cool before
cleaning or servicing.
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
3
WARNINGS - FRENCH
IMPORTANT : NE JETEZ PAS CE MANUEL
Ce manuel fait partie intégrante de l’appareil et doit être remis au PROPRIÉTAIRE, au GÉRANT
du restaurant ou au responsable de la FORMATION DES UTILISATEURS. Des manuels
supplémentaires sont disponibles auprès de votre concessionnaire WELLS.
TOUTE PERSONNE INSTALLANT OU UTILISANT CET APPAREIL DOIT LIRE CE MANUEL ET
S’ASSURER DE L’AVOIR COMPRIS.
Veuillez contacter votre CONCESSIONNAIRE WELLS pour toute question concernant
l’installation, l’utilisation ou l’entretien de cet équipement.
DANGER
RISQUE D’INCENDIE
Le système anti-incendie doit être chargé
et certié par un distributeur agréé Ansul®.
N’essayez PAS de modier ou de
contourner le système anti-incendie.
Un feu hors de contrôle risque de
provoquer des blessures graves, voire
mortelles.
AVERTISSEMENT :
Une alarme sonore se déclenche en
continu si le système anti-incendie est
déchargé. L’unité reste inutilisable
jusqu’à ce qu’un distributeur agréé Ansul®
eectue son intervention, le recharge et le
réinitialise.
REMARQUE :
Si un AVERTISSEUR D’INCENDIE À
DISTANCE MANUEL est installé, tout
déplacement du ventilateur, quel qu’en soit
le motif, peut provoquer la décharge du
système Ansul®.
DANGER - NE PAS BLOQUER
L’ACCÈS À LA POIGNÉE DE
L’EXTINCTEUR !
DANGER :
RISQUE DE SUFFOCATION
“Ce ventilateur ne doit pas être utilisé avec
des appareils à gaz. Il n’absorbe pas les
produits de combustion. En l’absence de
sortie d’aération, les gaz de combustion
peuvent être mortels.”
AVERTISSEMENT :
RISQUE DE DÉCHARGE ÉLECTRIQUE
Toute intervention nécessitant d’accéder à des
composants électriques non isolés doit être
eectuée par un technicien agréé usine.
N’ouvrez AUCUN panneau d’accès nécessitant
l’utilisation d’un outil. Le non-respect de cet
avertissement peut exposer à une décharge
électrique sévère.
AVERTISSEMENT :
RISQUE DE BLESSURE
Les procédures d’installation doivent être
eectuées par un technicien qualié ayant pleine
connaissance des réglementations applicables. Le
non-respect de cet avertissement peut provoquer
des blessures et des dommages matériels.
AVERTISSEMENT :
RISQUE DE CHUTE
N’utilisez PAS d’appareil de cuisson produisant
de la graisse sans que le godet à graisse soit
correctement installé. Vous risqueriez de glisser
car la graisse éclabousserait le sol.
AVERTISSEMENT :
N’essayez PAS de nettoyer le ltre ou le pré-ltre
HEPA ou à CHARBON. L’eau absorbée rendrait
le ltre inutilisable. Un ltre humide ou colmaté
provoque l’arrêt du système de ventilation. Utilisez
uniquement des pièces neuves et propres,
homologuées par Wells®. Conservez des
ltres de rechange pour éviter l’interruption du
fonctionnement.
Service clientèle : +1-314-678-6314.
4
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
32.52”
19.72”
29.5”
30.2”
3”
20.78”
4.8”
8”
53.30”
31.1”
31”
56.7”
5”
8”
18”
IL2734
CLEARANCES
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
5
FIRE SUPPRESSION SYSTEM
ELECTRIC & ANSUL
KNOCK-OUTS
(3 SIDES)
THERMAL
DETECTORS
(2 PLACES)
NOZZELS
(5 TOTAL)
CUSTOMER
ANSUL HOOK-UP
IL2740
Fire Suppression System Installation
It is required that this unit be protected by a UL listed re suppression
system, provided by the customer. The nal installation, testing and
certication of the system is the responsibility of the customer and MUST
be performed by a qualied Fire Protection Agent in accordance with the
hood system.
This Wells Ventless System includes factory installed piping, plenum,
discharge nozzles, thermal detectors.
A list of customer supplied Ansul® parts are listed in the PARTS LIST
section of this manual. (See Page 34)
DANGER
FIRE HAZARD
Fire suppression system
must be charged and certied
by an authorized Ansul®
distributor.
DO NOT attempt to modify or
bypass the re suppression
system.
An uncontrolled re can
cause serious injury or death.
NOTE:
If the re suppression system
is discharged, a buzzer will
sound continuously. The unit
will remain inoperable until
the re suppression system is
serviced, recharged and reset
by an authorized Ansul®
distributor.
Charging of the Ansul®
Fire Suppression system
must be in accordance with
Ansul® Design, Installation,
Recharge and Maintenance
Manual, #418087.
NOTE:
If a REMOTE MANUAL PULL
STATION is installed, moving
the ventilator for any reason
may cause the Ansul®
system to discharge.
IMPORTANT:
Should the re suppression
system discharge: all nozzles
must be replaced, and all
lines thoroughly cleaned,
prior to recharging the
system.
Residual re suppression
media may compromise the
ow and dispersion of re
suppression media in any
subsequent activation.
6
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
FEATURES & OPERATING CONTROLS
4
11
5
84
10
9
12
13
19
18
11
1
765
1
14
15
3
3
17
21
IL2735
Countertop Ventilator Section Operating Features & Controls
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
7
FEATURES & OPERATING CONTROLS continued
FEATURES & OPERATION CONTROLS
ITEM NO DESCRIPTION COMMENT
1 DISCHARGE NOZZLES Fire suppression media discharges here, (5 places)
2 VENTILATOR FAN Provides air movement for ventilation
3 DETECTION END OF LINE RELAY
Prevents appliance operation if a fault is found in
detection circuit.
4
VENTILATOR EXHAUST DUCT,
FRONT
Exit point for ventilator airow - on front of unit. DO
NOT BLOCK
5 FILTER INTERLOCK SWITCHES
Proper installation of bae lter and lter pack closes
these switches in ventilator sensor circuit
6
HI-EFFICIENCY/CHARCOAL
FILTER PACK
Removes grease and smoke particles. Also assists
in cooking odor removal.
7 PRE-FILTER
Replaceable PRE-FILTER, stops large particles of
grease from reaching the FILTER PACK for reduced
maintenance costs.
8 ELECTRICAL DETECTORS
Designed to activate at a certain temperature.
Activates (i.e. re on the cooktop) activates re
suppression system. Should be checked every 6
months during ANSUL® Service Inspection
9 PRE-FILTER SWITCH
Monititors the Pre-Filter and indicates when it needs
replacing, if ignored it will lead to unit shut down.
10
EQUIPMENT INTERFACE
CONTACTOR
Energizes cooking appliances only while ventilator
section is sensed as operational.
11 HEPA FILTER SWITCH
Montitors the HEPA lter and indicates when it needs
replacing, if ignored it will lead to unit shut down.
12
SUPPLY CONNECTION TERMINAL
BLOCK
Provides connection point for electrical circuitry
13 UNIT SHUT-DOWN SWITCH
Shuts down the unit and appliances when the lack of
air ow reaches a certain level, triggers a service unit
indicator.
14 GREASE DRIP TRAY
Collects grease/moisture dripping from bae lter
(16)
15 BAFFLE FILTER
Extracts and drains most greases and moisture from
the air ow.
16 APPLIANCE LIGHT (Not Shown)
ON when hood power switch is ON. Illuminates
cooking area.
17 120V TRANSFORMER Provides power to appliance lights
18 120V TRANSFORMER Provides power to contactor relay
19 BUILDING ALARM RELAY
Provides electrical connections for building alarm
system
8
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
PRECAUTIONS AND GENERAL INFORMATION
This ventilator hood is part of an engineered system and is intended for
use in commercial establishments only.
This ventilator is intended
for commercial establishments for use
in the preparation food for human consumption. No other use is
recommended or authorized by the manufacturer or its agents.
Operators of this appliance must be familiar with the appliance use,
limitations and associated restrictions. Operating instructions must be
read and understood by all persons using or installing this appliance.
This ventilator hood system is designed to reduce odor emissions,
but will not completely eliminate all cooking odors. Air exchange
rates at the installation site must comply with the requirements of the
local jurisdictional authority. To ensure that odors do not accumulate,
recommended minimum air exchange is 200 cfm per linear foot of hood
into and out of the site.
This unit is intended for use with light- and medium duty electric
cooking appliances only. Cooking appliances placed under this
ventilator must comply with the restrictions set forth in the Installation
section of this manual.
Do not connect or energize this appliance until all installation
instructions are read and understood. Property damage or bodily
injury may result if these instructions are not followed. Disconnect this
appliance from electrical power before performing any maintenance or
servicing.
Cleanliness of this appliance is essential to good sanitation. Read and
follow all included cleaning instructions and schedules to ensure the
safety of the food product.
This appliance is not jet steam approved. Do not direct water jet or
steam jet at this appliance, or at any control panel or wiring.
Do not splash or pour water on, in or over any controls, control panel or
wiring. Do not attempt to wash lter packs. Water will cause their
immediate failure and disable the ventilator.
Exposed surfaces of this appliance can be hot to the touch and may
cause burns.
Avoid storing ammable or combustible materials in, on or near the
ventilator or associated cooking appliance.
The technical content of this manual, including any wiring diagrams,
schematics, parts breakdown illustrations and/or adjustment
procedures, is intended for use by qualied technical personnel.
Any procedure which requires the use of tools must be performed by a
qualied technician.
All supplied instructions, diagrams, schematics, parts breakdown
illustrations, notices and labels must remain with the appliance if the
unit is sold or moved to another location.
This appliance is made in the USA. Unless otherwise noted, this
appliance has American sizes on all hardware.
DANGER:
SUFFOCATION HAZARD
Do not attempt to use this
ventilator with gas-red units.
This ventilator will not remove
products of combustion.
Unvented exhaust gasses
can be deadly.
WARNING:
SHOCK HAZARD
All servicing requiring
access to non-insulated
electrical components must
be performed by a factory
authorized technician.
DO NOT open any access
panel which requires the use
of tools. Failure to follow this
warning can result in severe
electrical shock.
IMPORTANT:
The ventilator is disabled
when the lters are plugged
to the point of insucient
airow for proper operation.
Also, power to the cooking
appliances is interrupted if
any lters or service panel
are removed.
It is the responsibility of
the store management to
maintain sucient spares
of lter packs to avoid
prolonged shutdown due
to a dirty or clogged lter
pack. Filter packs cannot be
cleaned.
Wells Manufacturing
assumes no liability for loss
of business due to a lter
related shutdown. Spare
lters can be purchased
from any authorized Wells
servicer or calling Wells.
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
9
AGENCY LISTING INFORMATION
INSTALLATION
NOTE: DO NOT discard
the carton or other packing
materials until you have
inspected the appliance for
hidden damage and tested it
for proper operation.
Refer to SHIPPING DAMAGE
CLAIM PROCEDURE on the
inside front cover of this
manual.
WARNING:
Risk of injury
Installation procedures must
be performed by a qualied
technician with full knowledge
of all applicable electrical
codes. Failure can result in
personal injury and property
damage.
IMPORTANT:
Fire suppression system must
be charged and certied by an
authorized Ansul® distributor.
Ventilator will not operate and
cooking appliance will not be
energized until the Ansul® re
suppression system has been
charged.
IMPORTANT:
After cooking appliances
are positioned under the
hood, swivel nozzles must
be positioned per Ansul®
recommendations.
UNPACKING & INSPECTION
Carefully remove the appliance from the carton. Remove all
protective plastic lm, packing materials and accessories from the
appliance before connecting electrical power or otherwise performing
any installation procedure.
Carefully read all instructions in this manual and any other docments
packed with the appliance before starting any installation.
All documentation should remain with the equipment operator for future
reference.
Read and understand all labels and diagrams attached to the
ventilator.
Carefully account for all components and accessories before
discarding packing materials.
COMPONENTS
Pre-Filter 1 ea.
Bae Filter 1 ea.
Filter pack 1 ea.
Grease cup 1 ea.
Ansul® components - must be supplied by customer and installed
by an authorized Ansul® distributor only:
The unit is shipped with an angled discharge grill.
To change the direction of the discharge airow:
1. Remove the discharge grill by removing the four (4) mounting
screws on the grill.
2. Rotate the discharge grill to the desired discharge position.
3. Re-Secure the grill using the four (4) mounting screws.
This appliance conforms to NSF Standard 2 for sanitation only if
installed in accordance with the supplied Installation Instructions
and operated and maintained in accordance with the instructions in this
manual.
This appliance is ETL listed.
UL710B
Recurculating System
STD 2
10
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
INSTALLATION (continued)
UNDER-HOOD APPLIANCE LIMITATIONS:
1. Appliance must be installed per manufactures instructions.
2. Electrical appliances only. Not Intended for gas red units.
3. All appliances under the hood must be connected to the hood appliance interlock circuit.
4. All appliances must meet the requirements outlined in the cooking appliance limitations chart below.
EQUIPMENT PARAMERTUER WVU-31C
Coverage
Parameters
Maximum
Cooking
Temperature
Maximum Single
Appliance Heated
Cooking Surface
Dim A,
Minimum
(1)
Dim B,
Minimum
(2)
Dim B,
Appliance Type
Fryer 16.9 400°F (204°C) 24 5 12 20
Griddle 5.5 450°F (232°C) 24 5 12 20
Hotplate 5.5 N/A N/A 5 15 25
Counter Top Oven N/A 550°F (287°C) 27 4 5 N/A
Sandwich Grills 5.5 450°F (232°C) 24 5 10 25
Convection Oven N/A 550°F (287°C) 27 5 5 N/A
(A) FRONT OF HOOD TO FRONT EDGE OF HEATED
COOKING SURFACE.
(B) BOTTOM FRONT EDGE OF HOOD TO HEIGHT OF
HEATED COOKING SURACE.
The hood and all under hood appliances must be installed
in accordance with the standard for ventilation control and
re protection of commercial cooking operations NFPA
96, the national electric code NFPA 70 and all local codes
where applicable.
All under hood appliances must be controlled by the
equipment shuto interface. Only electrically heated
appliances are acceptable for installation. Appliance
operation requires the re suppression system be setup,
charged and certied by an authorized ansul ® distributor.
The airow monitoring system will prevent appliance
operation if insucient airow is detected or all lters are
not in place. The service panel must be in place for blower
operation.
WELLS MANUFACTURING
MODEL NO: WVU-31CT
LOWER AIR FLOW LIMIT: 375CFM
MAXIMUM MEASURED GREASE EMISSIONS: .000693 LB/HR/FT
ANSI-UL710B RECIRCULATING SYSTEM
SIDE VIEW
B
31.63
A
30.24
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
11
INSTALLATION (continued)
SERVICE TECHNICIAN INSTALLATION NOTES
This ventilator hood is to be used with light-duty and medium-duty
electrically powered cooking appliances only.
• DO NOT attempt to use this ventilator hood with gas-red units.
• DO NOT use this ventilator hood with electrical appliances whose
dimensions or wattage characteristics exceed those dened in the
Under Hood Cooking Appliance Limitations, page 10.
Installation and start up must be performed by an Authorized
Installation Company.
Ansul® Installer must complete the WARRANTY INITIATION form
(2M-303912) included with the unit for the warranty to begin, and record
installation particulars on the CUSTOMER SERVICE DATA form
located at the end of this manual.
It is the responsibility of the installer to verify that this VENTILATOR
installation is in compliance with the specications listed in this manual,
with local code requirements, and in accordance with
NFPA 96 the STANDARD FOR VENTILATION CONTROL AND FIRE
PROTECTION OF COMMERCIAL COOKING OPERATIONS.
WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION,
SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY
OR DEATH. READ THE INSTALLATION, OPERATION AND MAINTENANCE
INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING
THIS EQUIPMENT.
WARNING: THIS PRODUCT IS NOT PROVIDED WITH AN INTEGRAL
FIRE EXTINGUISHING SYSTEM. AUTHORITIES HAVING JURISDICTION
SHOULD BE CONSULTED AS TO THE REQUIREMENT FOR THIS
EQUIPMENT WITH RESPECT TO FIRE EXTINGUISHING SYSTEMS, SUCH
AS THE NEED FOR FIELD INSTALLED SYSTEMS IN ACCORDANCE WITH
NFPA 96.
DANGER:
SUFFOCATION HAZARD
Do not attempt to use this
ventilator with gas-red units.
This ventilator will not remove
products of combustion.
Unvented exhaust gasses
can be deadly.
WARNING:
SHOCK HAZARD
All servicing requiring
access to non-insulated
electrical components must
be performed by a factory
authorized technician.
DO NOT open any access
panel which requires the use
of tools. Failure to follow this
warning can result in severe
electrical shock.
CAUTION:
RISK OF
DAMAGE
DO NOT connect or energize
this appliance until all
installation instructions are
read and followed. Property
damage or bodily injury could
result if these instructions are
not followed.
IMPORTANT:
If a remote pull station is to
be used, ventilator cannot be
moved without rst disabling
the remote pull station.
Contact your Ansul® agent
for details.
12
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
INSTALLATION (continued)
Site Preparation
1. Provide clearance around installation site to safety lift equipment
into its nal position. Consider general service and installation
space when locating unit.
2. Thoroughly review the plans and specication of the project.
3. Determine the exact location in which the cooking hood will be
installed and verify that there are no interferences, which will
prevent proper installation. There should be a necessary amount
of space above the hood for proper air discharge.
4. This unit is designed to sit on a permanent level counter, at no
time should this unit be in operation on a movable cart. Ensure
the site is capable of supporting both the hood’s weight as well as
the appliance.
5. Determine if adequate room is available to install the hood with
proper clearance from combustible material. IMC, NFPA96 and
local authorities having jurisdiction call for a minimum clearance
(typically 18 inches) between the cooking hood(s) and building
materials, which are combustible. However, IMC and NFPA96
outline acceptable clearance reduction methods. It is important to
check with the local authority having jurisdiction to determine that
the installation method is satisfactory to meet their requirements
prior to installing the equipment.
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
13
INSTALLATION (continued)
MECHANICAL INSTALLATION
The following is a step-by-step procedure for installation of the Recirculating Hoods.
1. Uncrate the hood, being very careful not to dent or scratch the outer surface. NOTE: Report any
damage to the delivering freight carrier and le a claim if appropriate. Check the nameplate on the
equipment to make certain it meets the specications provided by the architect and or engineer. If
discrepancies exist, notify the manufacturer immediately.
2. It’s important that you have read and understand “Site Preparation” before continuing with the installation
of the hood. See Table on page 8 “EQUIPMENT PARAMETER”.
3. Determine the exact location of the hood.
4. Raise the hood into position using high lifts or equipment jacks.
5. Once the hood is in position, check to ensure the hood is level and stable.
6. Apply a bead of food grade silicone sealant to the entire perimeter of the hood base to the counter
top. A liquid tight seal must be made between the hood base and the counter top.
7. A 5/16 inch hole is located on the rear of the unit if a tether devise (NOT SUPPLIED) is required.
a) Remove the plug by prying the plug out of the hole.
b) Install tether device.
Electrical Knock-out
On each wall of the enclosure is a grouping of
electrical connection knock outs. Each grouping
consists of four (4) individual knock outs.
They are:
- 2 of diameter 0.875 inch to allow use of a ½
inch trade size cable connector.
- 1 of diameter 1.984 inch to allow use of a 1
½ inch trade size cable connector.
- 1 of a 3.8 inch by 3.8 inch knock out with
two .177 diameter holes to allow use of a
standard 4 inch by 4 inch electrical junction
box.
Knock outs are also located on three (3) sides
of the top panel. These knock outs are sized to
accept a ½ inch trade size connection clamp.
IMPORTANT
Any appliance connection mounted to any
of the enclosure wall knock outs MUST be
sealed to the wall with high temperature
silicone sealant.
IL2749
Food Grade
Silicone
Electrical
Knock-Outs
(Qty 3)
Tether Device
(not supplied)
14
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
ELECTRICAL INSTALLATION
Refer to the nameplate on the ventilator. Verify ELECTRICAL
SERVICE POWER. Voltage and phase must match the nameplate
specications, and available electrical service amperage must meet or
exceed the listed amperage. Refer to specications listed on page 1 of
this manual.
The ground lug of this ventilator must be connected to a suitable
building ground.
Open the front control panel to access the cooking appliance contactor.
Wire the cooking appliance control circuit to the terminal block per the
gure below.
NOTE: It is the responsibility of the electrical contractor to provide
suitable wiring, exible or rigid conduit, and an appropriate strain relief.
Electrical Connection
NOTE: The hood requres a single phase (1ph), 208 or 240 volt, 15
amp suppy. When connecting line voltage to the unit’s terminal block,
use a minimum of #12 gage copper wire only, suitable for 167°F (76°C)
ambient temperature.
Appliance Connections
All under hood appliances are required to be interlocked with the hood’s
equipment cut-o circuit, through a customer supplied contactor. This
contactor must be a UL listed, denite purpose AC resistive air heating type,
suitable for the appliance load. Installation and connections shall be in
accordance with the National Electric Code NFPA 70. These connections
provide an automatic shutdown of the appliance when the hood is OFF, or in
the event of a malfunction or appliance re.
Equipment Cuto Connections
Opt 1: Use TB#3 & TB#4 for 208 or 240 volt control circuit. These contacts will be
de-energized when the hood is OFF or in the event of a malfunction
Opt 2: Use TB#5 & TB#6 as a Normally Closed SPST relay connection for equipment
control circuits with voltages other than 208 or 240 AC. These contacts will be
open when hood is OFF or in the event of a malfunction.
INSTALLATION
DANGER:
SUFFOCATION HAZARD
Do not attempt to use this
ventilator with gas-red units.
This ventilator will not remove
products of combustion.
Unvented exhaust gasses
can be deadly.
WARNING
SHOCK HAZARD
Electrical connections must
be made by a licensed
electrician.
CAUTION:
FIRE HAZARD
HEALTH HAZARD
All cooking appliance must
be connected to the cooking
appliance contactor, the
control circuit of which is
controlled by the ventilator.
Failure to control cooking
appliances will provide no
protection in the event of a
re, nor will cooking vapors
and odors be contained in
the event of ventilator hood
malfunction.
TB1
TB6
TB7
TB8
TB9
TB10
TB11
TB2
TB3
TB4
TB5
LINE INPUT
208-240VAC
50/60HZ
SEE NEXT PAGETO CUSTOMER
SUPPLIED
SWITCHING
DEVICE (SPST)
OPTION 2
TO CUSTOMER
SUPPLIED APPLIANCE
CONTACTOR
(240V CNTR CIRCUIT)
OPTION 1
L1 L2
IL2741
TB3
TB4
208/240V
APPLIANCE
CONTROL
EQUIPMENT
CUTOFF
TERMINALS
CUSTOMER
SUPPLIED
CONTACTOR(S)
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 1
SPST
SWITCHED
EQUIPMENT
CUTOFF
TERMINALS
TB5
TB6
CUSTOMER
SUPPLIED
CONTACTOR(S)
CUSTOMER
SUPPLIED
SOURCE CIRCUIT
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
L3
T3
EQUIPMENT INTERFACE OPTION 2
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
15
INSTALLATION continued
The ventilator will operate properly, and the appliance control relay will
be energized, only when:
1. The VENTILATOR POWER SWITCH is “ON”.
2. The Ansul® Fire Suppression System is charged and armed.
3. All lters are in position and serviceable, and the ventilator air ow
system is satised.
DANGER
FIRE HAZARD
Fire suppression system
must be charged and certied
by an authorized Ansul®
distributor.
DO NOT attempt to modify or
bypass the re suppression
system.
An uncontrolled re can
cause serious injury or death.
NOTE:
If the re suppression system
is discharged, a buzzer will
sound continuously. The unit
will remain inoperable until
the re suppression system is
serviced, recharged and reset
by an authorized Ansul®
distributor.
Charging of the Ansul®
Fire Suppression system
must be in accordance with
Ansul® Design, Installation,
Recharge and Maintenance
Manual, #418087.
NOTE:
If a REMOTE MANUAL PULL
STATION is installed, moving
the ventilator for any reason
may cause the Ansul®
system to discharge.
IMPORTANT:
Should the re suppression
system discharge: all nozzles
must be replaced, and all
lines thoroughly cleaned,
prior to recharging the
system.
Residual re suppression
media may compromise the
ow and dispersion of re
suppression media in any
subsequent activation.
N.C.
N.O.
C
CUSTOMER SUPPLIED CONNECTIONS
AUTOMAN ELECTRIC SWITCH # 1
N.C.
N.O.
C
AUTOMAN
ELECTRIC
SWITCH
CUSTOMER SUPPLIED CONNECTIONS
AUTOMAN ELECTRIC SWITCH # 2
YL
BR
AUTOMAN
ACTUATOR
SOLENOID
TB 10
TB 11
TB 9
TB 9TB 9TB 8
TB 7
IL2742
16
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
INSTALLATION continued
DANGER
BURN HAZARD
Any additional remote pull
station must NOT be installed
on the front of the cooking
appliances,
Discharge of the re
extinguishing system into hot
grease or oil may cause hot
foam to spill over from the
cooking surface or frypot.
Serious burns and other injuries
can result from contact with hot
oil and from slipping in spilled
oil.
The manual pull station is
installed on the right side
(facing the unit. It may,
however, be relocated to the left
side of the ventilator hood by an
authorized Ansul® agent.
FIRE SUPPRESSION SYSTEM INSTALLATION
THE FIRE SUPPRESSION SYSTEM is supplied by the customer with
the exception of the piping, nozzles and thermal detectors.
The hood is not supplied with a eld installed MANUAL PULL
STATION, which must be set-up at the time of installation by an
authorized Ansul® distributor.
The MANUAL PULL STATION allows for for manual emergency
shutdown of cooking appliance power, and actuation of the re
suppression system.
Three (5) NOZZLES disperse the re suppression media. These
nozzles protect the fan, plenum, Grease Bae, Filter and Cooking
Area.
If the ventilator is situated such that the supplied manual pull
station cannot be installed or is not readily accessible, a REMOTE
MANUAL PULL STATION may be required by local codes. Any
such remote manual pull station must be installed by an authorized
Ansul® distributor in accordance with the AUTHORITY HAVING
JURISDICTION.
The re detection system utilizes two (2) electronic thermal detector
with an actuation set point of 225°F (107°C).
The signaling from the detection devices will automatically discharge
the re suppression media through all nozzles, disable the cooking
appliances and cause the alarm to sound.
Fire supression media will form an emulsion designed to both
smother and cool the fuels in/on the cooking appliance.
The MANUAL PULL STATION and any similar REMOTE MANUAL
PULL STATION will activate the re suppression system when the
ring on the pull station is pulled to its full extent.
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
17
INSTALLATION
NOTE:
The BAFFLE FILTERS,
PRE-FILTERS and FILTER
PACK actuate position
switches when they are
properly positioned. They
must be properly installed
for the under hood cooking
appliance contactor to be
energized.
WARNING
SLIP AND FALL
HAZARD
DO NOT operate any
grease-producing cooking
appliance unless the grease
cup is properly installed. Oil
will drip onto oor creating a
slipping hazard.
CAUTION
BURN HAZARD
DO NOT operate any cooking
appliance unless the grease
cup is installed.
Moisture dripping onto hot
surfaces, oil or grease can
cause splattering.
WARNING
CLEAN FILTERS
DO NOT attempt to wash the
HEPA / charcoal iter pack or
pre-lter. Water absorbtion
will render the lter unusable.
Use of a wet or clogged lter
will cause the ventilation
system to shut down. Use
only clean Wells
®
Authorized
Service Parts. Keep spare
lter packs on hand to avoid
distruptions. Wells Parts
Department (314) 678-6314.
FILTER INSTALLATION
Note air ow direction arrow on lter pack. Remove old lter pack
and slide new lter pack fully into the appropriate slot. Verify that
the airow arrow points toward the fan.
The bae
lter is reusable and should be cleaned at least weekly.
Change the pre-lter and Hepa lter pack as indicated on the front
panel. These lters are disposable and cannot be reusable. All lters
are accessible throught the front service door.
Use only genuine Wells replacement parts and filters,
call (800) 264-7827 or your authorized Wells service agent. Parts
supplied by others will void your warranty and may not provide safe
operation.
BAFFLE FILTER and GREASE CUP INSTALLATION
1. Install bae lter from front. Engage the bae lter in the retainer
slot. Push up until the bae lter bottom clears the lower lip of the
retainer, then lower the bae lter into the bottom retainer
2. Install GREASE CUP into brackets below the bae lter.
Note: Failure to install the GREASE CUP will allow grease and
moisture from the BAFFLE FILTER to drop into hot cooking surfaces,
creating both a SAFETY HAZARD (hot oil splatter).
HEPA FILTER
PRE-FILTER
BAFFLE-FILTER
IL2738
18
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
OPERATION
Control Panel
NOTE: Cooking appliances must be operated in accordance with the
manufacturer’s instructions.
During normal operation, the illuminated power switch will be the only
light on the control panel that will be ON.
If the CHECK FILTERS light illuminates, check BAFFLE FILTERS,
PREFILTERS, and the HEPA AIR FILTERS for proper installation.
If the REPLACE PRE-FILTERS light illuminates .. Replace the Pre-lters.
If the REPLACE FILTER PACK light illuminates, replace the FILTER
PACK.
NOTE: the REPLACE FILTERS PACK light is a warning that lter pack is
nearing the end of its service life. The ventilator will continue to operate
for a period of time after the REPLACE FILTER PACK LIGHT turns ON
to allow continued operation through a peak period. However, lter pack
must be replaced within a short time period or it will clog, disabling the
ventilator and appliances.
If the SERVICE REQUIRED light illuminates, the lter pack is restricted
to the point of insucient airow for proper operation and the Ventilator
will shut down until the underlying clogged lter situation has been
corrected. Replace clogged item with a fresh lter to correct the
condition.
Reset the unit by turning VENTILATOR POWER SWITCH to OFF,
then back to ON.
A failure of incoming electric power will cause a shut down of the unit.
Reset the unit by turning VENTILATOR POWER SWITCH to OFF, then
back to ON.
Operation Lights
There are two equipment lights that provide illumination of the working
area. These lights are controllled by the main power switch.
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns.
CAUTION:
SHOCK HAZARD
DO NOT splash or pour water
or grease onto control panel
or wiring.
IMPORTANT:
The ventilator cannot operate
if the lter pack is removed or
clogged.
It is the responsibility of
the store management to
maintain sucient spares
of lter packs to avoid
prolonged shutdown of the
ventilator when this lter is
expended.
Filter packs cannot be
cleaned.
Wells Manufacturing assumes
no liability for loss of business
due to lter related shutdown.
Filters that are not genuine
Wells Replacement Parts
may cause your unit to
operate incorrectly and you
will risk the possibility of
voiding your warranty.
SERVICE
REQUIRED
REPLACE
FILTER PACK
REPLACE
PREFILTER
CHECK
FILTER
ON
POWER
OFF
IL2736
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
19
CLEANING INSTRUCTIONS
PRECAUTIONS: Disconnect unit from electric power and allow to cool
Cover frypot to prevent oil contamination
FREQUENCY: Weekly
TOOLS: Mild detergent, clean non-abrasive towels
NOTE: Ventilator section to be cleaned in conjunction with cooking
appliance. Refer to appliance user instructions for cleaning procedure.
1. TURN HOOD POWER SWITCH TO OFF.
Cover cooking appliance to prevent oil contamination.
2. Remove BAFFLE FILTERS and GREASE CUP(s).
3. Empty GREASE CUP(s) into an appropriate grease collection
receptacle.
4. Clean BAFFLE FILTERS and GREASE CUP(s) in a sink or dishwasher
using mild detergent and warm water.
5. Dry components with a clean non-abrasive cloth.
Reinstall BAFFLE FILTERS and GREASE CUP(s) in ventilator.
6. Wipe exterior & interor surfaces of ventilator with a clean cloth
moistened with warm water and mild detergent. Rinse by wiping with a
clean cloth moistened with warm water.
7. Uncover the cooking appliance and reconnect unit to electric power.
Procedure is complete
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns. Allow unit to cool
before cleaning or servicing.
CAUTION:
SHOCK HAZARD
DO NOT splash or pour water
or grease onto control panel
or wiring.
IL2814
DO NOT TURN OFF HOOD DURING CLEANING
OPERATIONS. SUPPRESSION SENSORS PROVIDE
SUPERIOR FIRE DETECTION BUT ARE SENSITIVE
TO RAPID TEMPERATURE RISE. TO PREVENT
UNINTENTIONAL DEPLOYMENT OF THE FIRE
EXTINGUISHING SYSTEM, DO NOT FLOOD
HEATING COOKING SURFACES WITH WATER.
20
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
CLEANING INSTRUCTIONS
PRECAUTIONS: Disconnect unit from electric power and allow to cool
Cover cooking surfaces and frypots to prevent
contamination.
FREQUENCY: Monthly
TOOLS: Mild detergent, clean non-abrasive towels
NOTE: Ventilator section to be cleaned in conjunction with cooking
appliance. Refer to appliance user instructions for cleaning procedure.
1. TURN HOOD POWER SWITCH TO OFF.
Cover cooking applaince to prevent oil contamination.
2. Remove BAFFLE FILTERS, GREASE CUP(s), and all FILTER PACK(s).
3. Wipe interior of ventilator with a clean cloth moistened with warm water
and mild detergent. Rinse by wiping with a clean cloth moistened with
warm water. DO NOT clean by spraying.
4. Dry ventilator thoroughly with a clean non-abrasive cloth.
Reinstall all FILTERS, BAFFLE FILTERS, GREASE CUP(s).
5. Uncover the cooking appliance and reconnect unit to electric power.
Procedure is complete
CAUTION:
HOT SURFACE
Exposed surfaces can be hot
to the touch and may cause
burns. Allow unit to cool
before cleaning.
CAUTION:
SHOCK HAZARD
DO NOT splash or pour water
or grease onto control panel
or wiring.
IMPORTANT:
DO NOT wash FILTER
PACK. Washing these lters
will clog them, and cause
installed cooking appliance
to be disabled.
IMPORTANT:
DO NOT clean interior of
ventilator by spraying.
Spraying can contaminate the
cooking appliance, and may
cause internal damage to the
ventilator blower, operation
proong system and/or re
suppression system.
Clean by wiping only.
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
21
REQUIRED MAINTENANCE
USE AND MAINTENANCE SHALL BE IN ACCORDANCE WITH THE
STANDARD FOR VENTILATION CONTROL AND FIRE PROTECTION
OF COMMERIAL COOKING OPERATIONS, N.F.P.A. 96 (current
edition).
3-MONTH MAINTENANCE:
Thoroughly clean entire HOOD PLENUM and BLOWER section.
6-MONTH MAINTENANCE:
Inspection and testing of total operation including FIRE DAMPER and
all SAFETY INTERLOCKS shall be performed by qualied service
personnel.
All FIRE SUPPRESION SYSTEM actuation components including
MANUAL PULL STATION and any REMOTE MANUAL PULL STATION
must be inspected for proper operation in accordance with the
maintenance schedule published in
ANSUL® R-102 SYSTEM DESIGN,
INSTALLATION, RECHARGE AND MAINTENANCE MANUAL (418087).
ANNUAL (12-MONTH) MAINTENANCE:
NOZZLES and MANUAL PULL STATION must be cleaned in
accordance with
ANSUL® R-102 SYSYTEM DESIGN, INSTALLATION,
RECHARGE AND MAINTENANCE MANUAL (418087).
12-YEAR MAINTENANCE:
The FIRE SUPRESSION AGENT TANK must be HYDROSTATICALLY
TESTED, and the FIRE EXTINGUISHING AGENT must be REPLACED
in accordance with the maintenance schedule published in ANSUL®
R-102 SYSTEM (STANDARD UL 300 LISTED). This maintenance to be
performed by qualied Ansul® service personnel only.
IMPORTANT:
Per NFPA 96, a signed and
dated VENTILATOR HOOD
MAINTENANCE LOG
must be maintained on the
premises, and be made
available for inspection by the
authority having jurisdiction
upon request.
IMPORTANT:
Should the re suppression
system discharge, all
lines and nozzles must be
thoroughly cleaned prior to
recharging the system.
Be sure to note such cleaning
on the hood maintenance log.
Residual re suppression
media may compromise the
ow and dispersion of re
suppression media in any
subsequent activation.
22
WELLS BLOOMFIELD, LLC
IL2144
Inspection shall be conducted on a monthly basis in accordance with
the manufacturer’s Operation Manual. At a minimum, this inspection
shall include verification of the following:
OPERATION AGENT DATE
Extinguishing system components:
In proper place and (visually in
good order
Manual pull station actuators for fire
suppression system are obstructed
The maintenance log is in place
and up to date
The nozzle blow-off caps are in place
and in good condition
The hood, duct and protection cooking
appliance have not been replaced,
modified or relocated
Clean plenum GREASE BAFFLE and
BLOWER (max. interval: 3 months)
Change PRE-FILTER and FILTER PACK
(as required)
No obvious physical damage or condition
exists that might prevent operation of the
fire suppression system
VENTILATOR HOOD OWNERS MONTHLY INSPECTION LOG
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
23
WELLS BLOOMFIELD, LLC
Replace fire damper fusible link:
rated @ 280ºF
Max interval: 12 months
IL2798
Inspect fire suppression detectors, all releasing devices for
actuation, fire suppressant tank liquid level
Max interval: 6 months
(discharge of fire suppressant not a part of this test)
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
24
M524 p/n 2M-Z17591 OpM WVU- Countertop Universal Hood
29
ANSUL
®
ANSUL INCORPORATED
MARINETTE, WI 54143-2542
MATERIAL SAFETY DATA SHEET
ANSULEX Low pH
QUICK IDENTIFIER (In Plant Common Name)
Manufacturer’s
Name:
Emergency
Telephone No.:
ANSUL INCORPORATED
CHEMTREC
(800) 424-9300 or (703) 527-3887
Prepared By:
Address:
One Stanton Street, Marinette, WI 54143-2542
Safety and Health Department
Other Information
Calls:
(715) 735-7411
Date Prepared:
February 1, 1999
SECTION 1 - IDENTITY
SECTION 2 - INGREDIENTS
SECTION 3 - PHYSICAL AND CHEMICAL CHARACTERISTICS (Fire and Explosion Data)
SECTION 4 - PHYSICAL HAZARDS
Common Name (Used on Label):
(Trade Name and Synonyms)
ANSULEX Low pH Liquid Fire Suppressant
CAS No.:
N/A
N/A N/A N/A N/A
N/A
N/A
N/A
N/A
N/A N/A
N/E
N/E
N/E
N/E
N/E
NDA
NDA
NDA
NDA
N/A
Chemical
Name:
N/A This is a M ixture
Chemical
Fam ily:
M ixture
Formula:
PART A - HAZARDOUS INGREDIENTS
PART B - OTHER INGREDIENTS
Principal Hazardous Component(s) (chemical and common name(s)):
Other Component(s) (chemical and common name(s)):
W t.%
W t.%
CAS No.
CAS No.
ACGIH TLV
ACGIH TLV
Acute Toxicity Data
Acute Toxicity Data
None
Proprietary Mixture of Organic and Inorganic Salts
48.0 - 50.0
Phosphoric Acid 0.2
7664-38-2
Yellow-Green Fluorescent Dye 0.011
518-47-8
Oral LD (rat)
50
6800 mg/kg
EDTA
0.65
64--02-8
Water
Approx. 50.0
7732-18-5
Boiling
Point:
Percent Volatile
by Volume (%):
Solubility
in Water:
Appearance
and Odor:
Flash Point:
Special Fire
Fighting Procedures:
Unusual Fire and
Explosion Hazards:
113ºC
Approx. 50.0
100%
Fluorescent Yellow Colored Liquid, Mild Odor
None to boiling
NONE - THIS IS AN EXTINGUISHING AGENT
None
Vapor Density:
(Air = 1):
Flammable Limits
in Air % by Volume:
1.03
Specific
Gravity (H O=1):
2
Vapor Pressure
(mm Hg):
1.33
Not Determined
Evaporation Rate:
(Butyl Acetate=1):
Approx. 0.005
Reactivity in
Water:
Mild exothermic reaction
Extinguisher
Media:
Auto-Ignition
Temperature:
Stability:
Incompatibility
(Materials to Avoid):
Hazardous
Decomposition Products:
Hazardous
Polymerization:
Unstable
Stable
Conditions
to Avoid:
Conditions
to Avoid:
Reactive Metals, ClF , electrically energized equipment, any material reactive with water.
3
Not established, acrid fumes.
May Occur
W ill N ot O cc ur
25
M524 p/n 2M-Z17591 OpM WVU- Countertop Universal Hood
30
SECTION 5 - HEALTH HAZARDS
SECTION 6 - EMERGENCY AND FIRST AID PROCEDURES
SECTION 7 - SPECIAL PROTECTION INFORMATION
SECTION 8 - SPECIAL PRECAUTIONS AND SPILL/LEAK PROCEDURES
HAZARDOUS MATERIAL IDENTIFICATION SYSTEM
ANSULEX Low pH (continued)
Threshold
Limit Value:
None Established
Routes of Entry:
Eye Contact:
Irritant
Irritant
Skin Contact:
Skin Contact:
Inhalation:
Inhalation:
Not an expected route of entry. Can be irritating to mucous membranes.
Irritating to mucous membranes. Acute Oral LD (Sprague-Dawley rats) 825.5mg/kg.
50
Ingestion:
Ingestion:
Signs and
Symptom s:
Acute Exposure: Material irritates skin, eyes, and mucous membranes.
Chronic Exposure: None known.
Medical Conditions Generally
Aggravated by Exposure:
None known.
Chemical Listed as
Carcinogen or Potential:
Yes
No
Yes
No
Yes
No
National Toxicology
Program:
I.A.R.C
Monographs:
OSHA
Eye Contact:
Flush and irrigate with water for 15 minutes while holding eyelids open.
If irritation persists, seek medical attention.
Wash thoroughly with soap and water. If irritation persists, seek medical attention.
Fresh air if symptoms occur. If irritation persists, seek medical attention.
Dilute by drinking large quantities of water.
Respiratory Protection
(Specify Type):
N/A
N/A N/A
Ventilation:
Local
Exhaust:
Mechanical
(General):
Protective
Gloves:
Rubber gloves for spill/leak
Eye
Protection:
Chemical goggles recommended during
spill/leak procedures.
Other Protective
Clothing or Equipment:
Eye wash and safety showers are good safety practice.
Precautions to be taken
in Handling and Storage:
Other
Precautions:
Steps to be taken in Case
Material is Released or Spilled:
Waste Disposal
Methods:
Store in original container. Keep tightly closed. Keep separate from acid.
See incompatibility information in Section 4.
Stop leaks. Contain spills. Remove as much as possible. Place in closed container for proper disposal
Wash spill area with large amounts of water to remove traces and neutralize.
Dispose of in compliance with local, state and federal regulations.
HAZARD INDEX
4 SEVERE HAZARD 0 HEALTH
3 SERIOUS HAZARD
2 MODERATE HAZARD 0 FLAMMABILITY
1 SLIGHT HAZARD
0 MINIMAL HAZARD 0 REACTIVITY
N/A = Not Applicable NDA = No Data Available N/E = Not Established
ANSUL and ANSULEX are registered trademarks.
Internet Address: http://www.ansul.com
ANSUL INCORPORATED, ONE STANTON STREET, MARINETTE, WI 54143-2542 Form No. F-90160-6 ©1999 Ansul Incorporated
503 p/n 2M-304989 Owners Manual WVF-886 Ventless Fryer
26
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
TROUBLESHOOTING SUGGESTIONS
NOTE:
FILTERS are the only user serviceable components in this ventilator hood system. For all problems that cannot be remedied by
servicing the lters, contact:
Ventilator section - authorized Wells service agency
Fire suppression system - authorized Ansul® distributor
IMPORTANT:
Contact ANSUL® for re suppression system installation, set-up and service:
Ansul Incorporated 1-800-TO-ANSUL (1-800-862-6785)
One Station Street
Marinette, WI 54143-2542 website http;//www.ansul.com
IMPORTANT:
Parts used in the Ansul® re suppression system are not serviceable by the owner/operator.
Procedures for servicing re suppression equipment are described in:
ANSUL® R-102 SYSTEM DESIGN, INSTALLATION, RECHARGE AND MAINTENANCE MANUAL
(418087, current edition)
NOTE:
ANSUL® Manual 418087 is intended for use by authorized Ansul® service personnel only.
Problem Possible Cause Suggested Remedy
Unit will not operate
Disconnected from electric power
Reconnect to electric power
(no indicators lights lit) Reset circuit breaker for unit
Unit will not operate
Fire suppression system not set Contact an authorized Ansul® distributor for repairs
(buzzer sounds)
CHECK FILTER light lit Filter pack, Pre-lter or bafe lter not in position Properly install lters
REPLACE FILTER light lit Filter nearing end of service life Arrange to replace lters in a timely manner
Filter pack plugged Replace lter pack
Fire damper in exhaust collar has closed Contact an authorized Wells service agent for repairs
SERVICE REQUIRED light lit (cooking
appliance not operating)
One or more vacuum sensing lines or ports plugged, or
sensing line dislodged.
Contact an authorized Wells service agent for repairs
NOTE: If, after 20 seconds, there is insufcient airow for proper operation, SERVICE REQUIRED light will
illuminate and under-hood appliance (s) will be de-energized.
Press VENTILATOR POWER SWITCH to OFF, then back to ON to reset system.
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
27
WIRING DIAGRAM
208/240 VOLT AC 60 HZ L2
120 VOLT
N.C.
N.O.
C
PREFILTER
PRESSURE
SWITCH
FIRE
SUPPRESSION
SOLENOID
SOLENOID
ACTUATED
SWITCH
CHANGE
PREFILTER
LIGHT
FILTER PACK
INTERLOCK
PRE-FILTER
INTERLOCK
BAFFLE FILTER
INTERLOCK
CHECK
FILTERS
LIGHT
DETECTION
END OF
LINE
RELAY
SUPPRESSION ACTIVATED
SWITCH
SUPPLIED BY CUSTOMER
EQUIPMENT
SHUTOFF
CONTACTOR
L1 T1
L2 T2
L3 T3
EQUIPMENT
CUTOFF
TERMINALS
N.C.
N.O.
C
TIME
DELAY
RELAY
NEUTRAL
N.O.
L1
WARNING
BUZZER
EQUIPMENT
SHUTOFF
CONTACTOR
AIRFLOW
SHUTDOWN
PRESSURE SWITCH
REPLACE
FILTER
PACK
PRESSURE
SWITCH
CHANGE
FILTER
PACK
LIGHT
SERVICE
REQ'D.
LIGHT
C
NO
NC
DETECTION
END OF LINE
RELAY
BLOWER
208/240 VOLT AC 60 HZ L1
208/240 V
APPLIANCE
CONTROL
CIRCUIT
SPST
SWITCHED
POWER
SWITCH L1
FILTER SERVICE
DOOR SWITCH
LED
LIGHTS
12 VOLT
TB2
TB1
TB3
TB4
TB5
TB6
PRE-FILTER
ELECTRICAL
DETECTORS
TB3
TB4
208/240V
APPLIANCE
CONTROL
EQUIPMENT
CUTOFF
TERMINALS
CUSTOMER
SUPPLIED
CONTACTOR(S)
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 1
SPST
SWITCHED
EQUIPMENT
CUTOFF
TERMINALS
TB5
TB6
CUSTOMER
SUPPLIED
CONTACTOR(S)
CUSTOMER
SUPPLIED
SOURCE CIRCUIT
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
L3
T3
EQUIPMENT INTERFACE OPTION 2
2M-Z17941a 17AUG2013
VOLTS
208-240 60 HZ 1PH
AMPS
1.9
MODEL
WVU-31CT
FOR SUPPLY CONNECTION USE #12
AWG COPPER WIRE ONLY SUITABLE
FOR AT LEAST 75C
BLOWER
SUPPLIED
BY
CUSTOMER
TB10
TB11
TB 9
TB 8
TB 7
BUILDING ALARM RELAY
TAB # 2
CUSTOMER
HOOK-UP
TAB # 4
28
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
EXPLODED VIEW & PARTS LIST
Filter Maintenance
Model: WVU-31CT Maintenance Parts
SK2747 Rev. a, 4/16/2014
Pre-Filter Hood
Part No: 2I-302579
Grease Cup
Part No: 2D-Z14672
Baffle Filter: 12” x 25”
Part No: 2I-Z17655
Filter HEPA/Carbon Pack
Part No: N1-WL0422
1 2
3 4
2
3
1
4
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
29
EXPLODED VIEW & PARTS LIST
Suppression System
Model: WVU-31CT Suppression System
SK2748 Rev. A, 4/17/2014
Adapter 3/8” Quick Connect
Part No: 2K-47269
1
1
2
3
4
Adapter Swivel Ansul
Part No: 2D-307483
2
Nozzel 1W
Part No: 2O-302931
O-Ring
Part No: 2I-Z18157
3
4
30
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
EXPLODED VIEW
Main Assembly
1
5
6
7
4
4
26
22
25
24
23
21
12
6
13
14
15
20
19
4
18
17
16
27
28
8
9
10
11
2
3
4
Model: WVU-31CT Main Assembly
SK2750 Rev. A, 4/22/2014
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
31
PARTS LIST
Main Assembly
Model: WVU-31CT Main Assembly
Fig No Part Number Quantity Description
1 N1-Z17756 1 TOP COVER PANEL, REAR
2 N1-Z17755 1 TOP COVER PANEL, FRONT
3 N1-Z17687 1 AIR DEFLECTOR PLATE
4 2C-6349 32 SCREW #8X3/8 B THP STL NP
5 2C-42066 2 SCREW 6-32X1 PH RD HD NI
6 2E-Z12427 2 SWITCH, SPDT (DOOR)
7 2C-200201 2 NUT 6-32 HEX LOCK SS
8 2K-Z15319 2 ADAPTOR 1/2” QUICK SEAL
9 2T-Z15320 2 THERMAL DETECTOR-225F
10 2K-Z15502 2 FTG,90DEG ELBOW,3/16”X1/4
11 2K-47100 2 ADAPTER 1/4IN QUICK CON A
12 2E-300407 2 FILTER SW,PLUNGER W/ RLLR
13 N1-Z17679 1 COVER BKT,PLUNGER SWITCH
14 2C-42067 2 SCREW 10-32X3/8 PH TR HD
15 N1-WL0479 1 FILTER DOOR ASSY,RIGHT
16 2E-Z15335 1 TRANSFORMER 208/240 100VA
17 2C-6517 3 NUT 1/4-20 HEX STL NP
18 N1-Z17690 1 PLATE,SIDE ACCESS
19 2U-302584 1 BLOWER ASSY UNIVERSAL HD
20 2C-Z7165 16 NUT 8-32 HEX SS W/EXT WSH
21 N1-WL0416 1 DISCHARGE SPOUT ASSY
22 2K-Y5093 5 BUSHING-SNAP #SB-1000-12
23 2V-302582 1 DAMPER FIRE 6x6, 282’F
24 2P-Z17415 1 TIMER,CUBE/ RELAY
25 2E-Z15018 1 TRANSFORMER, 208/240 12V
26 2E-Z15353 1 RELAY, 120V SPNO
27 2C-303522 6 SCREW 6X3/8 PH PAN DRLPT
28 2C-Z18059 6 CABLE CLAMP NYLON 1/2 DIA
32
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
EXPLODED VIEW
Controls Assembly
1
2
4
3
5
6
10
9
7
14
12
13
12
11
15
16
17
18
8
Model: WVU-31CT Controls Assembly
SK2751 Rev. A, 4/22/2014
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
33
PARTS LIST
Controls Assembly
Model: WVU-31CT Control Assembly
Fig No Part Number Quantity Description
1 2M-306719 1 LOGO WELLS DIECAST SHIELD
2 N1-WL0480 1 DOOR ASSEMBLY, LEFT
3 N1-WL0245 2 LED LIGHT W/TERMINALS
4 2C-Z14619 6 SCREW 4-40X1/4 PH PAN HD
5 2C-200014 42 SCREW 8-32X3/8 THP SS
6 N1-Z18155 1 TERMINAL BLOCK ASSY
7 2J-44834 1 BUZZER 220V ROHS
8 2K-Y5093 5 BUSHING-SNAP #SB-1000-12
9 2E-44514 1 RELAY 208-240V COIL
10 2E-Z14960 1 CONTACTOR,40A 208/240COIL
11
2E-Z24056 1 SWITCH VACUUM #2
12 2E-Z15352 2 VACUUM SWITCH,HEPA FILTER
13 N1-Z17683 1 MOUNTING PLATE,PRESSURE
14 2C-Z7165 6 NUT 8-32 HEX SS W/EXT WSH
15 N1-Z15418 1 MOUNTING PLATE,CTRL LIGHT
16 N1-WL0737 4 LIGHT SIGNAL ASSY, CLEAR LED
17 2M-Z17758 1 GRAPHICS PANEL - WVU-31CT
18 2E-305295 1 SWITCH ROCKER 250V 10A GR
34
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
The following parts are to be procured by customer and installed by ANSUL® authorized
distributor. This list does not include the conduit and ttings that may be required for the
Ansul plumbing.
Model: WVU-31CT Control Assembly
Wells Part
Number
ANSUL® Part
Number
Description Qty Rqd.
31CT Model
Actuators, hoses, and ttings required
2E-47273 423878 One Electric Switch Kit (Field Mounted) Includes
Electric Switch (SPDT), and Mounting Hardware
1
2K-301245 Included
(79153)
COMPRESSION SEAL 1/2 EMT
3
2V-47392 79493
OEM Regulated Electric Release Shipping Assembly
Includes Release Mechanism, and ¼ in. Hose and
Mounting Bracket
1
Nitrogen Cartridges Required
2O-47099 423429
Cartridge Shipping Assembly (LT-20-R) 1
ANSULEX Tanks and ANSULEX Required
2O-304433 429864
1.5 Gallon Tank Shipping Assembly 1
2O-47469 79694
1.5 Gallon Container of ANSULEX Low pH
Liquid Fire Suppressant
2
Nozzles and Nozzle Components Required
All included
Manual Pull Station Parts Required
2O-47272 423251
(50 in package)
Pulley Elbows Shipping Assembly
(Compression End)
? (6)
N1-Z15506 434525
Flexible Conduit (500 ft.) ? (6 ft.)
2A-47470 26317
Stop Sleeve 1
2K-Z15507 435979
Flexible Conduit Strain Relief
2
2K-Z15508 434347
Flexible Conduit Inserts
2
2O-301164 4596
Oval Press-To-Crimp Sleeves
1
2O-308131 434618
Remote Manual Pull Station
1
2O-47466 79653 or
15821
1/16 in. Stainless Steel Cable.
ANSUL part no. 79653 is 500 ft.
ANSUL part no. 15821 is 50 ft.
? (20 ft.)
Ansul® Parts For 31CT To Be Supplied By Customer
M524 p/n 2M-Z17951 OpM WVU- Countertop Universal Hood
35
CUSTOMER SERVICE DATA
please have this information available if calling for service
RESTAURANT _____________________________ LOCATION _____________
INSTALLATION DATE ________________________ TECHNICIAN ___________
SERVICE COMPANY ________________________________________________
ADDRESS ___________________________ STATE ______ ZIP__________
TELEPHONE NUMBER (_____)_____-_________
EQUIPMENT MODEL NO. _____________EQUIPMENT SERIAL NO. _______________
VOLTAGE: (check one) 208 240
DESCRIPTION PART NO.
PARTS & SERVICE
IMPORTANT: Use only
factory authorized service parts
and replacement lters.
For factory authorized service,
or to order factory authorized
replacement parts, contact
your Wells authorized service
agency, or call:
Wells Manufacturing
10 Sunnen Dr.
St. Louis MO 63143 USA
Service Dept.
phone: (800) 264-7827
Service Parts Department can
supply you with the name and
telephone number of
the WELLS A
UTHORIZED
SERVICE AGENCY
nearest you.
WELLS MANUFACTURING
265 Hobson Street, Smithville, Tennessee 37166
telephone: 800-264-7827
www.wells-mfg.com
