Page 1
WELLS MANUFACTURING
10 Sunnen Dr., St. Louis, MO 63143
telephone: 314-678-6314
fax: 314-781-2714
www.wellsbloomfield.com
OWNERS MANUAL
VENTLESS
HOOD SYSTEM
ELECTRIC FRYERS &
BROILERS
COOKING
APPLIANCES
525
for
MODEL
WV48FB
Manual Includes
INSTALLATION
USE & CARE
EXPLODED VIEW
PARTS LIST
WIRING DIAGRAM
IL2372
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.
p/n 2M-Z17944 Rev.. A M525 150511
Page 2
LIMITED WARRANTY STATEMENT
Unless otherwise specied, all commercial cooking
equipment manufactured by Wells Manufacturing is
warranted against defects in materials and workmanship
for a period of one year from the date of original installation
or 18 months from the date of shipment from our factory,
whichever comes rst, and is for the benet of the original
purchaser only.
THIS WARRANTY IS THE COMPLETE AND ONLY
WARRANTY, EXPRESSED OR IMPLIED IN LAW
OR IN FACT, INCLUDING BUT NOT LIMITED TO,
WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE, AND/OR FOR
DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES
IN CONNECTION WITH WELLS MANUFACTURING
PRODUCTS. This warranty is void if it is determined
that, upon inspection by an authorized service agency,
the equipment has been modied, misused, misapplied,
improperly installed, or damaged in transit or by re, ood
or act of God. It also does not apply if the serial nameplate
has been removed, or if service is performed by unauthorized
personnel. The prices charged by Wells Manufacturing for
its products are based upon the limitations in this warranty.
Seller’s obligation under this warranty is limited to the
repair of defects without charge by a Wells Manufacturing
factory authorized service agency or one of its sub-service
agencies. This service will be provided on customer’s
premises for non-portable models. Portable models (a
device with a cord and plug) must be taken or shipped to the
closest authorized service agency, transportation charges
prepaid, for service. In addition to restrictions contained
in this warranty, specic limitations are shown in the
Service Policy and Procedure Guide. Wells Manufacturing
authorized service agencies are located in principal cities.
This warranty is valid in the United States and Canada and
void elsewhere. Please consult your classied telephone
directory, your foodservice equipment dealer or contact:
Wells Manufacturing
10 Sunnen Dr., St. Louis MO 63143 USA
phone (314) 678-6314 or fax (314) 781-2714
for information and other details concerning warranty.
SERVICE POLICY AND PROCEDURE GUIDE and ADDITIONAL WARRANTY EXCLUSIONS
1. Resetting of safety thermostats, circuit breakers, over
load protectors, and/or fuse replacements are not
covered by this warranty unless warranted conditions
are the cause.
2. All problems due to operation at voltages or phase
other than specied on equipment nameplates are
not covered by this warranty.
Conversion to correct voltage and/or phase must be
the customer’s responsibility.
3. All problems due to electrical connections not made
in accordance with electrical code requirements
and wiring diagrams supplied with the equipment are
not covered by this warranty.
4. Replacement of items subject to normal wear, to
include such items as knobs, light bulbs; and, normal
maintenance functions including adjustments of
thermostats, adjustment of micro switches and
replacement of fuses and indicating lights are not
covered by warranty.
5. Damage to electrical cords and/or plug due to exposure
to excessive heat are not covered by this warranty.
6. Full use, care, and maintenance instructions supplied
with each machine. Noted maintenance and
preventative maintenance items, such as servicing and
cleaning schedules, are customer responsibility. Those
miscellaneous adjustments noted are customer
responsibility. Proper attention to preventative
maintenance and scheduled maintenance procedures
will prolong the life of the appliance.
7. Travel mileage is limited to sixty (60) miles from an
Authorized Service Agency or one of its sub-service
agencies.
8. All labor shall be performed during regular working
hours. Overtime premium will be charged to the buyer.
9. All genuine Wells replacement parts are warranted
for ninety (90) days from date of purchase on non-
warranty equipment. This parts warranty is limited only
to replacement of the defective part(s). Any use of
non-genuine Wells parts completely voids any
warranty.
10. Installation, labor, and job check-outs are not
considered warranty and are thus not covered by this
warranty.
11. Charges incurred by delays, waiting time or operating
restrictions that hinder the service technician’s ability to
perform service are not covered by warranty. This
includes institutional and correctional facilities.
SHIPPING DAMAGE CLAIM PROCEDURE
NOTE: For your protection, please note that equipment
in this shipment was carefully inspected and packaged
by skilled personnel before leaving the factory. Upon
acceptance of this shipment, the transportation company
assumes full responsibility for its safe delivery.
IF SHIPMENT ARRIVES DAMAGED:
1. VISIBLE LOSS OR DAMAGE: Be certain that any
visible loss or damage is noted on the freight bill or
express receipt, and that the note of loss or damage is
signed by the delivery person.
2. FILE CLAIM FOR DAMAGE IMMEDIATELY:
Regardless of the extent of the damage.
3. CONCEALED LOSS OR DAMAGE: if damage is
unnoticed until the merchandise is unpacked, notify the
transportation company or carrier immediately, and le
“CONCEALED DAMAGE” claim with them. This
should be done within fteen (15) days from the date
the delivery was made to you. Be sure to retain the
container for inspection.
Wells Manufacturing cannot assume liability for damage or
loss incurred in transit. We will, however, at your request,
supply you with the necessary documents to support your
claim.
xi
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Page 3
TABLE OF CONTENTS
WARRANTY xi
ELECTRICAL SPECIFICATIONS 1
FEATURES & OPERATING CONTROLS 2-3
PRECAUTIONS & GENERAL INFORMATION 4
AGENCY LISTING INFORMATION 5
INSTALLATION
Unpacking & Inspection 5
Components 5
Under-Hood Appliance Limitations 6
Service Technician Installation Notes 7
Base Assembly 8-9
Electrical Installation 10-11
ANSUL® INSTALLATION & SETUP 12-13
Filter Installation 14
OPERATION
Operation Lights 15
CLEANING INSTRUCTIONS 16-17
WIRING DIAGRAM 19
REQUIRED MAINTENANCE & MAINTENANCE LOGS 20-23
TROUBLESHOOTING SUGGESTIONS 24
EXPLODED VIEW & PARTS LIST 27-36
INTRODUCTION
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.
ELECTRICAL SPECIFICATIONS
Model Volts Amps Power Supply
WV48FB
WV48FB-50HZ 4.3
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
208/240V
3.5
For supply connection use #12 AWG copper wire only.
1
Page 4
FEATURES & OPERATING CONTROLS
20
1
43 5 6
24
15
17
16
13
12
19
18
14
25
26
21
22
23
7
2
8
VENTILATOR CONTROL PANEL
see page 15
11
9
10
Ventilator Section Operating Features & Controls
2
IL2391a
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Page 5
FEATURES & OPERATING CONTROLS continued
FEATURES & OPERATION CONTROLS
ITEM
NO
1 VENTILATOR EXHAUST DUCT, TOP Exit point for ventilator airow - on top of unit. DO NOT BLOCK
2 VENTILATOR EXHAUST DUCT, FRONT Exit point for ventilator airow - on front of unit. DO NOT BLOCK
3 VENTILATOR FAN Provides air movement for ventilation
HI-EFFICIENCY/CHARCOAL FILTER
4
PACK
DESCRIPTION COMMENT
Removes grease and smoke particles. Also assists in cooking odor removal.
5 NAMEPLATE
6 FIRE SUPPRESSION TANK Container for ANSUL® Low-pH Liquid re suppression uid.
7 ACTUATOR ASSY
8 ANSUL® CARTRIDGE Propels suppression liquid through suppression manifold and nozzles.
9 MANUAL PULL STATION
10 ADJUSTABLE LEGS Allows the unit to be leveled.
11 AIR WALL A wall of air that moves the grease and smoke particles into the lter system.
12 DISCHARGE NOZZLES Fire suppression media discharges here, (6 places 48”, 12 places 96”)
13 ELECTRICAL DETECTORS
14 APPLIANCE LIGHT ON when hood power switch is ON. Illuminates cooking area.
15 GREASE DRIP TRAY Collects grease/moisture dripping from bafe lter (16)
16 BAFFLE FILTER Extracts and drains most greases and moisture from the air ow.
17 PRE-FILTER ASSEMBLY
18 ELECTRICAL CONNECTION BOX Houses electrical components
19 GROUND LUG Ground wire of power connection connects here.
Gives manufacturer, make and model description. Also list voltage and amperage
data.
Triggers deployment of suppression uid through manual pull station or electric
detection.
Provides a means of manual activation of the re suppression system. PULL ONLY
IN CASE OF FIRE!
Designed to activate at certain temperature. Activates (i.e. re on the cooktop)
activates re suppression system. Should be checked every 6 months during
ANSUL® Service Inspection
Comprises the PRE-FILTER FRAME and a replaceable PRE-FILTER. Stops large
particles of grease from reaching the FILTER PACK for reduced maintenance costs.
20 EQUIPMENT INTERFACE CONTACTOR Energizes cooking appliances only while ventilator section is sensed as operational.
21 BUILDING FIRE ALARM RELAY Reports re alarm condition to building re management system.
22 DETECTION END OF LINE RELAY Prevents appliance operation if a fault is found in detection circuit.
23
24 FILTER INTERLOCK SWITCHES
25 VARIABLE FREQUENCY DRIVE Converts 50Hz to 60Hz, 1 Phase
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
26 VFD RELAY Engauges VFD
SUPPLY CONNECTION TERMINAL
BLOCK
Provides connection point for electrical circuitry
Proper installation of bafe lter and lter pack closes these switches in ventilator
sensor circuit
50Hz UNITS
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Page 6
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
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 insufcient
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 sufcient 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.
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.
for commercial establishments for use
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
4
Page 7
AGENCY LISTING INFORMATION
SANITATION
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.
UL CLASSIFIED for use in US and Canada
NSF/ANSI 2
UL710B
Recurculating System
INSTALLATION
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 documents
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
4 ft
Pre-Filter 2 ea.
Bafe Filter 2 ea.
Filter pack 1 ea.
Grease cup 1 ea.
Ansul® components - must be installed by an authorized Ansul®
distributor only:
4 ft
2 ea. Fire suppression agent tank
2 ea. Fire suppression agent (Ansulex® Low pH) 1.5 gal.
1 ea. Fire suppression system charging cartridge
Store these components in a convenient place for later use.
The unit is shipped congured for horizontal discharge of the exhaust.
To convert to vertical discharge:
1. Remove top access cover.
2. Remove internal turning vane.
3. Insert top discharge scoop assy and fasten w/hardware from cover.
4. Remove front discharge vent panel and damper assy.
5. Assemble damper in Top discharge scoop assy.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
6. Replace front discharge vent panel.
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.
5
Page 8
INSTALLATION (continued)
UNDER-HOOD APPLIANCE LIMITATIONS:
COOKING APPLIANCE LIMITATIONS
Acceptable Appliances by
Appliance Type
Single Vat Fryer
Multi Vat Fryer
Oven/Convection Oven
Steamer / Combi Oven 0
kW / Ft
Max
16.9
N/A
Max
Cooking
Temp
400°F
(204°C)
550°F
(287°C)
(1) Maximum single width 18”
(2) Front of hood to front edge of heated cooking surface.
(3) Bottom front edge of hood to height of heated cooking surface.
(4) Clearance from hood side panel to heated cooking surface.
SPECIFIC APPLIANCE LIMITATIONS
Specic Appliance
see notes (5) (6)
Input
Max
Max Temp
Setting
Dim D
Min (7)
NIECO Conveyor Broiler 7 Kw 500 15 14.5 18 0
Max Single
Heated Surface
Length
18
48
Dim E
Min (8)
Dim E
Max (8)
Dim
“A” (2)
Minimum
Dim
“B” (3)
Minimum
14 37 42
6 8 N/A
Dim F
Min (9)
B
Dim
“B” (3)
Maximum
Dim
“C” (4)
Minimum
0
0
0
BY APPLIANCE TYPE
48"
A
(5) Model JF91E with electrically interlocked exhaust catalyst.
(6) Meat paties must be frozen.
(7) Front edge of hood to front edge of heated chamber.
(8) Bottom edge of hoot to exhaust catayst.
(9) Clearance from hood side panel to broiler side.
All under hood appliances must be controlled by the equipment shutoff
interface. See owners manual pages 10-11 and wire diagram in supply
connection box. 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
insufcient airow is detected or all lters are not in place.
The service panel must be in place for blower operation.
This 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 electrical
code NFPA70 and all local codes where applicable.
Wells Manufacturing Model WV48FB
Lower Airow Limit: 1500 CFM
Broiler Maximum Measured Grease Emissions: 0.0063 LBS/HR/FT
Other Accepted Appliances: 0.0024 LBS/HR/FT
ANSI-UL710B Recirculating System UL Category YZCT FILE NO. MH4808
* The 10” - 12” leg option
increases the overall vertical
height.
74
NIECO MODEL JF91E
E
48"
D
74”
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
IL2744
6
Page 9
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 6.
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.
NOTE: Certain codes require FRYERS to be restrained with a
TETHER or other RESTRAINT DEVICE. If this ventilator is to be used
with a fryer, it is the RESPONSIBILITY OF THE INSTALLER to check
with the AUTHORITY HAVING JURISDICTION, in order to ascertain
the applicability of this requirement to this specic installation .
SETUP
Setup the appliance only on a rm, level, non-combustible surface.
Verify local codes for requirements. Concrete, tile, terrazzo or metal
surfaces are recommended. Metal over combustible material may not
meet code for non-combustible surfaces.
Verify vertical clearances. Ceiling height shall be no less than 103”
inches when utilizing horizontal discharge option. Ceiling height shall
be no less than 120” inches when utilizing vertical discharge option.
Verify that the unit sits rmly on ALL LEGS. With a spirit level, check
that the appliance is level front-to-back and side-to-side. With the
adjustable legs, adjust as required to level the appliance. In order to
prevent tipping or deection, legs must be adjusted such that all legs
are in rm contact with the oor.
WARNING:
Equipment must be installed in accordance with the equipment
parameters table located on the service door. Fire suppression
sensors used on this unit provide superior re detection but are
sensitive to rapid temperature rise. To prevent unintentional
deployment of the re extinguishing system,
DO NOT move equipment from installed position when in use.
DO NOT power off hood when under hood equipment is HOT.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
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.
7
Page 10
INSTALLATION (continued)
Hardware Provided
Front
Nut; 2C-6517
Washer; 2C-A27469
Bolt; 2C-Z5555
IL2977
BASE ASSEMBLY
Prior to assembling the base, locate it as close to the
nial position as possible. Then follow these steps.
1. Align the two rear panels (Fig 1) and secure with a
bolt, washer and nut (8 places).
2. Place the Base Bottom Stiffener (N1-Z15330) to the
bottom of the two rear panels and secure with bolt,
washer and nut (8 places).
3. Align the left and right side of the base to the rear
panel (Fig 2) and secure with bolt, washer and nut
(8 places each side).
4. Align the rear corner brackets in place (Fig 3) and
secure with bolt, washer and nut
(4 places each bracket).
5. Install the 6” adjustable legs and secure in place with
the bolt provided.
Front
Bottom Stiffener
IL2387
Figure 1
IL2388
Figure 2
Corner Bracket
6” Adj. Legs
IL2389
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Figure 3
8
Page 11
INSTALLATION (continued)
Base Deflectors
Figure 4
6. Align the two base deectors (Fig 4) in place and
secure with screws (8 per deector)
7. Move the base into position, and using a level,
adjust the legs until level.
8. Remove the side panels of the hood assembly so
when lowered onto the base assembly it will be
easier to secure in place.
9. Using the upper supporting brackets on the hood,
lower the hood on top of the base (Fig 5) so the
mounting holes line up. Secure with bolt, washer
and nut (7 places each side).
10. Contact your electrical & Ansul® contractors
to provide service to the system. Refer to
the ELECTRICAL INSTALLATION & FIRE
SUPPRESSION SYSTEM INSTALLATION
sections in this manual.
11. Once complete the side panels can be installed
using hardware provided.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Figure 5
IL2743
9
Page 12
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.
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.
Remove the left side panel to access the cooking appliance contactor
and building alarm relay. Remove the appropriate knockout, then wire
the cooking appliance control circuit to the terminal block per Fig 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 requires a single phase (1ph), 208 or 240 volt, 20
amp supply. 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-off 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 Cutoff 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.
CUSTOMER
SUPPLIED
CONTACTOR(S)
TB1
TB2
L1 L2
LINE INPUT
208-240VAC
50/60HZ
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 1
TO CUSTOMER
SUPPLIED APPLIANCE
CONTACTOR
(240V CNTR CIRCUIT)
OPTION 1
208/240V
TB3
APPLIANCE
CONTROL
TB4
EQUIPMENT
CUTOFF
TERMINALS
10
TB3
TB4
TB5
TO CUSTOMER
SUPPLIED
SWITCHING
DEVICE (SPST)
OPTION 2
CUSTOMER
SUPPLIED
CONTACTOR(S)
TB6
TB7
TB8
BUILDING
ALARM
INTERFACE
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 2
SOURCE CIRCUIT
T3
TB5
TB6
L3
CUSTOMER
SUPPLIED
SPST
SWITCHED
EQUIPMENT
CUTOFF
TERMINALS
IL2376a
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Page 13
INSTALLATION continued
SUPPLY POWER INSTALLATION
FIRE
ALARM
SYSTEM
SUPPLY
POWER
TO HOOD
APPLIANCE(S)
POWER
SUPPLY
HOOD
INTERFACE
CONTACTOR(S)
POWER
TO
APPLIANCE(S)
IL2745
DANGER:
SHOCK HAZARD
Turn power off to the unit
before removing the side
electrical box cover.
CAUTION:
SHOCK HAZARD
The ground lug of this
appliance must be connected
to a suitable building ground.
IMPORTANT:
Contact a licensed electrician
to install and connect electrical
power to the appliance.
IMPORTANT:
Damage due to being
connected to the wrong
voltage or phase is NOT
covered by warranty.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
11
Page 14
INSTALLATION continued
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.
The alarm relay is activated by the Ansul® re detection system. If the
installation includes a building alarm system, connect to terminals T7 &
T8 of the terminal block in supply connection box. These terminals are
congured from the factory for normally open operation.
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.
FIRE SUPPRESSION SYSTEM INSTALLATION
THE FIRE SUPPRESSION SYSTEM is comprised of two containers
of Ansulex® Low pH liquid re suppression media and a system
pressurization canister, plus associated plumbing.
The hood is 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 manual emergency
shutdown of cooking appliance power, and actuation of the re
suppression system.
Six NOZZLES disperse the re suppression media. Two inner nozzles
protect the fan and plenum. The appliance nozzles are swivel mounted,
and must be directed toward the cooking surface of the installed
cooking appliance.
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 six electronic thermal detectors with
an actuation set point of 225°F (107°C) in the upper hood locations
and 275°F (135°C) detectors in the lower wall locations. The signaling
from any of these detection devices will automatically discharge the re
suppression media through all nozzles, disable the cooking appliances
and cause the alarm to sound.
Fire suppression media will form an emulsion designed to both smother
and cool the fuels in/on the cooking appliance.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
12
Page 15
INSTALLATION
FIRE SUPPRESSION SYSTEM INSTALLATION (continued)
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.
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.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
IMPORTANT:
Equipment must be installed
in accordance with the
equipment parameters table
located on the service door.
Fire suppression sensors
used on this unit provide
superior re detection
but are sensitive to rapid
temperature rise. To prevent
unintentional deployment of
the re extinguishing system,
DO NOT move equipment
from installed position when
in use. DO NOT power
off hood when under hood
equipment is HOT.
13
Page 16
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
(e.g. fryer or broiler) unless
the grease cup is properly
installed. Oil will drip onto
oor creating a slipping
hazard.
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.
25.9 Min
PREFILTER HOUSING MUST
HOOK IN FLANGE AT TOP.
CHECK TO MAKE SURE YOU
CANNOT PUSH IT BACK
AFTER INSTALLATION
BAFFLE FILTER
PART NO. 2I-Z14670
Clearance
SMOKE & ODOR
FILTER PACK
PART NO. WL0171
PREFILTER
PART NO. 2I-302579
AIRFLOW
SIDE VIEW
AIRFLOW
IL2377b
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.
Bafe lters are reusable and should be cleaned at least weekly.
Change pre-lters and smoke/odor lter pack as indicated on the front
panel. These lters are disposable and cannot be reused. The smoke
/ odor lter pack is accessed thru the front service door.
Pre-lters are located behind the bafe lters, when installing pre-lters
engage top retaining ange prior to seating pre-lter housing in lower
chamber.
Use only genuine Wells replacement parts and lters,
call (314) 678-6314 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 bafe lter from front. Engage the bafe lter in the retainer
slot. Push up until the bafe lter bottom clears the lower lip of the
retainer, then lower the bafe lter into the bottom retainer
2. Install GREASE CUP into brackets below the bafe 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) and a HEALTH
HAZARD (contamination of the cooking surface or cooking oil).
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
14
Page 17
OPERATION
Control Panel
ON
POWER
OFF
CHECK
REPLACE
REPLACE
FILTERS
PREFILTERS
FILTER PACK
AIR CURTAIN
SERVICE REQUIRED
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, PRE-
FILTERS, and the HEPA AIR FILTERS for proper installation.
If the REPLACE PRE-FILTERS light illuminates .. Replace the Pre-lters.
If the REPLACE FILTER light illuminates, replace the FILTER PACK.
NOTE: the REPLACE FILTERS light is a warning that the 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 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 insufcient 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.
If the air curtain service required lights illuminate, there is insufcient
airow for proper operation. Call an authorized Wells Service Agent.
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.
SERVICE
REQUIRED
IL2374
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 sufcient 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.
Operation Lights
There are three equipment lights that provide illumination of the working
area. These lights are controlled by the main power switch.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
15
Page 18
CLEANING INSTRUCTIONS
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.
PRECAUTIONS: Disconnect unit from electric power and allow to cool
Cover frypot to prevent oil contamination
FREQUENCY: Daily
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 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
16
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Page 19
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 appliance 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.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
17
Page 20
REQUIRED MAINTENANCE
IMPORTANT:
Per NFPS 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.
USE AND MAINTENANCE SHALL BE IN ACCORDANCE WITH THE
STANDARD FOR VENTILATION CONTROL AND FIRE PROTECTION
OF COMMERCIAL COOKING OPERATIONS, NFPA. 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 SUPPRESSION 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
INSTALLATION, RECHARGE AND MAINTENANCE MANUAL (418087).
ANNUAL (12-MONTH) MAINTENANCE:
NOZZLES and MANUAL PULL STATION must be cleaned in
accordance with
RECHARGE AND MAINTENANCE MANUAL (418087).
ANSUL® R-102 SYSYTEM DESIGN, INSTALLATION,
ANSUL® R-102 SYSTEM DESIGN,
12-YEAR MAINTENANCE:
The FIRE SUPPRESSION 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.
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
18
Page 21
WIRING DIAGRAM
208/240 VOLT AC 60 HZ L2
TB2
TB1
208/240 VOLT AC 60 HZ L1
CUSTOMER
SUPPLIED
CONTACTOR(S)
120 VOLT
C
N.C.
FIRE
SUPPRESSION
SOLENOID
DETECTION
END OF LINE
RELAY
DECK
DECK
DECK
N.O.
SOLENOID
ACTUATED
SWITCH
RH REAR
CNTR REAR
LH REAR
ELECTRICAL
DETECTORS
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 1
POWER SWITCH L2
L3 T3
L2 T2
L1 T1
EQUIPMENT
208/240 V
APPLIANCE
CONTROL
CIRCUIT
SPST
SWITCHED
POWER
SWITCH L1
TB3
TB4
SHUTOFF
CONTACTOR
EQUIPMENT
208/240V
APPLIANCE
CONTROL
EQUIPMENT
CUTOFF
TERMINALS
TB3
TB4
TB5
TB6
CUTOFF
TERMINALS
SERVICE
DOOR SWITCH
LED
LIGHTS
12 VOLT
PREFILTER
PRESSURE
SWITCH
CUSTOMER
SUPPLIED
CONTACTOR(S)
CHANGE
PREFILTER
LIGHT
TO APPLIANCE
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 2
CHECK
FILTERS
LIGHT
FILTER PACK
INTERLOCK RT
PRE-FILTER
INTERLOCK RT
BAFFLE FILTER
INTERLOCK RT
PRE-FILTER
INTERLOCK LT
BAFFLE FILTER
INTERLOCK LT
EQUIPMENT
SHUTOFF
CONTACTOR
DETECTION
END OF
LINE
RELAY
SOURCE CIRCUIT
WARNING
BUZZER
TB5
TB6
CUSTOMER
SUPPLIED
BUILDING
ALARM
RELAY
T3
L3
SPST
SWITCHED
EQUIPMENT
CUTOFF
TERMINALS
AIR CURTAIN
SERVICE
REQ',D LIGHT
N.O.
N.C.
SUPPRESSION
ACTIVATED SWITCH
AIR CURTAIN
PRESSURE SWITCH
NC
C
NO
NO
C
NC
AIRFLOW
SHUTDOWN
PRESSURE SWITCH
TB7
TB8
C
SERVICE
REQ'D.
LIGHT
MODEL
WVU-48
FOR SUPPLY CONNECTION USE #12
AWG COPPER WIRE ONLY SUITABLE
CHANGE
FILTER
PACK
LIGHT
REPLACE
FILTER
PACK
PRESSURE
SWITCH
208-240 60 HZ 1PH
FOR AT LEAST 75C
VOLTS
CURTAIN
FAN 2
CURTAIN
FAN 1
BLOWER
N.O.
TIME
DELAY
RELAY
L1
AMPS
3.5
2M-Z14919 REV A 1-13-2012
NEUTRAL
TERMINAL BLOCK FOR WIRING
CUSTOMERS CONTACTOR/S
(COILED WIRED IN PARALLEL)
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
TO (T1) AND (T2) OF
FACTORY MOUNTED
CONTACTOR
HOOD MOUNTED 10W
LED APPLIANCE
LIGHTS
54
53
CUSTOMER SUPPLIED
CONTACTOR CONNECTION
POWER TO UNDERHOOD APPLIANCES
T1 T2 T3
L1 L2 L3
51
REPLACE
PRE-FILTER
LIGHT
(AMBER)
REPLACE
FILTERS
LIGHT
(AMBER)
CHECK
FILTERS
LIGHT
(AMBER)
CUSTOMER
PROVIDED
CONTACTOR
MUST BE
208-240
VAC
50
52
49
24
27
25
POWER
SWITCH
46
41
42
W.D. # 2M-Z14919 DATE CODE 0811 REV-
12V
PRE-FILTER
P.SWITCH
NORMALLY
COMMON
21
26
15
HEPHA INTERLOCK SWITCH
2
3
1
4
47
#5
FD8-120
#4
61
#2
#1
COM
208 / 240V
NORMALLY
CLOSED
#6
#8
#10
TB2
TB2
72
TB1
73
TB1
74
1 2 3 4 5 6 7
VARIABLE
FREQUENCY
DRIVE
67
68
20
22
23
OPEN
22
NORMALLY
OPEN
4
48
29
NORMALLY
CLOSED
COMMON
NORMALLY
NORMALLY
CLOSED
NORMALLY
CLOSED
NORMALLY
CLOSED
AUTOMAN
ELECTRIC
SWITCH
YL
OPEN
30
OPEN
31
OPEN
32
OPEN
27
15
44
41
COMMON
NORMALLY
COMMON
NORMALLY
COMMON
NORMALLY
RH CEILING
4
#2
PRE-FILTER
INTERLOCK
SWITCH
#2 BAFFLE
INTERLOCK
SWITCH
#1
PRE-FILTER
INTERLOCK
SWITCH
#1
BAFFLE
INTERLOCK
SWITCH
20
COMMON
NORMALLY
OPEN
NORMALLY
CLOSED
3
LH-DOOR
INTERLOCK
SWITCH
10
3
THERMAL DETECTORS (225°F, N.O.)
HEPA
62
63
LH CEILING LH LOWER
21
29
COMMON
28
28
3
C
N.O.
N.C.
BR
AUTOMAN
ACTUATOR
SOLENOID
43
WV48FB-50HZ
67
L2
L1
68
71
10K Ω
U
V
END OF
LINE
DEVICE
(CURRENT
LIMITING)
RELAY
(SPNO)
CENTER
33
RH LOWER
42
41
69
70
SERVICE
REQ
LIGHT
(RED)
AIR
VACCUM
SWITCH
(SHUTDOWN)
NORM
CLOSED
NORM
OPEN
COMMON
2
1
TB1
CURTAIN
SWITCH
(SHUTDOWN)
NORM
CLOSED
NORM
17
OPEN
COMMON
16
16
45
4
3
3940
1
2
TB2
L2 INPUTL1 INPUT
19
20
4
10
68
35
34
15
TO
CUSTOMER
SUPPLIED
APPLIANCE
CONTACTOR
TB3
55
T1
T2 T3
L1 L2 L3
2
1
67
4
2
5
1
3
65
66
36
SERVICE
REQ
36
CURTAIN
FAN (RED)
69
36
18
75
BLK
PURPLE
M
13
14
16
14
4
COMMON
NORM
OPEN
NORM
12
CLOSED
58
57
9
58
TB6
TB5
VACCUM SWITCH
(REPLACE FILTER)
C
N.O.
N.C.
AUTOMAN
ELECTRIC
SWITCH
TO CUSTOMER SUPPLIED
SWITCHING DEVICE
TB4
56
66
(SPST)
65
16
11
75
15
9
CURTAIN
FAN
MOTORS
76
38
TIMER
N.O.
1
2
5
6
4
59
6
2
5
1
BUILDING
ALARM
RELAY
59
TB7
TO CUSTOMER BUILDING
ALARM MONITORING
SYSTEM
(NEUT.)
BUZZER
4
3
TB8
76
7
3
8
60
11
60
19
Page 22
WELLS BLOOMFIELD, LLC
IL2144
VENTILATOR HOOD OWNERS MONTHLY INSPECTION LOG
OPERATION AGENT DATE
Extinguishing system components:
In proper place and (visually in
good order
Manual pull station actuators for fire
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:
suppression system are obstructed
The maintenance log is in place
and up to date
No obvious physical damage or condition
exists that might prevent operation of the
The nozzle blow-off caps are in place
fire suppression system
and in good condition
20
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)
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Page 23
WELLS BLOOMFIELD, LLC
VENTILATOR HOOD MAINTENANCE LOG
IL2378a
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Log TEMP
Log mfg DATE
Stamp
OPERATION AGENT / DATE
Replace fire damper fusible link:
rated @ 212ºF
Clean and inspect discharge nozzle in plenum BEFORE filters
This MAINTENANCE LOG is to be performed and completed by a trained technician who has
completed the instruction necessary to perform the maintenance and recharge service.
MAX. interval: 6 months
Clean and inspect discharge nozzle in plenum AFTER filters
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)
Inspect fire suppression hoses, plumbing and tank for
obstructions and any condition such as, but not limited to,
corrosion and pitting.
MAX. interval: 6 months
Max interval: 6 months
Inspect and test all filter interlocks
Max. interval: 6 months
Max interval: 12 months
THIS MAINTENANCE LOG MUST BE KEPT IN A PROTECTIVE COVER PERMANENTLY ATTACHED TO THE APPLIANCE
Log all repairs and recommendations on reverse side. Any repairs, other than replacement of factory authorized parts, to the fire suppression plumbing system must be
21
subject to hydrostatic pressure testing.
Page 24
ANSUL
ANSUL INCORPORATED
MATERIAL SAFETY DATA SHEET
Manufacturer’s
Name:
Address:
Prepared By:
SECTION 1 - IDENTITY
Comm on Nam e (Used on Label):
(Trade Name and Synonyms)
Chemical
Name:
Formula:
SECTION 2 - INGREDIENTS
PART A - HAZARDOUS INGREDIENTS
Principal Hazardous Component(s) (chemical and common nam e(s)):
None
MARINETTE, WI 54143-2542
®
ANSUL INCORPORATED
One Stanton Street, Marinette, WI 54143-2542
Safety and Health Department
ANSULEX Low pH Liquid Fire Suppressant
N/A This is a M ixture
N/A
ANSULEX Low pH
QU ICK ID EN TIFIER (In P lant C omm on N ame)
W t.%
Em ergency
Telephone No.:
Other Information
Ca lls:
Date Prepared:
CAS No.:
Chemical
Fa mily :
CAS No.
CHEMTREC
(800) 424-9300 or (703) 527-3887
(715) 735-7411
February 1, 1999
N/A
M ixture
ACGIH TLV
Acute Toxicity D ata
N/A N/A N/A N/A
PART B - OTHER INGREDIENTS
Other Component(s) (chemical and comm on name(s)):
Proprietary Mixture of Organic and Inorganic Salts
Phosphoric Acid 0.2
ED TA
Yellow-Green Fluorescent Dye 0.011
Water
W t.%
48.0 - 50.0
0.6 5
Approx. 50.0
CAS No.
N/A
7664-38-2
64--0 2-8
518-47-8
7732-18-5
ACGIH TLV
N/E
N/E
N/E
N/E
N/E
SECTION 3 - PHYSICAL AND CHEMICAL CHARACTERISTICS (Fire and Explosion Data)
Bo iling
Point:
Percent Volatile
by Volume (%):
Solubility
in Water:
Appearance
and Odor:
Flash Point:
Special Fire
Fighting Procedures:
Unusual Fire and
Explosion Hazards:
113 ºC
Approx. 50.0
Vapor Density:
(Air = 1 ):
1.0 3
100%
Fluorescent Yellow Colored Liquid, Mild Odor
None to boiling
Flammable Limits
in Air % by Volume:
N/A
NONE - THIS IS AN EXTINGUISHING AGENT
None
Specific
Gra vity (H O= 1):
2
Evaporation Rate:
(Butyl Acetate=1):
Rea ctivity in
Wa ter:
Extinguisher
Media:
1.3 3
Approx. 0.005
Mild exothermic reaction
N/A N/A
Vapor Pressure
(mm Hg ):
Auto-Ignition
Temperature:
SECTION 4 - PHYSICAL HAZARDS
Stability:
Incompatibility
(Materials to Avoid):
Hazardous
Decomposition Products:
Hazardous
Polymerization:
W ill Not Occ ur
Unstable
Stable
Reactive M etals, ClF , electrically energized equipment, any m aterial reactive w ith water.
Not established, acrid fumes.
May O ccur
Conditions
to Avoid:
Conditions
to Avoid:
N/A
3
N/A
Acute Toxicity D ata
NDA
NDA
NDA
Oral LD (rat)
6800 mg/kg
NDA
Not Determined
50
22
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
29
Page 25
SECTION 5 - HEALTH HAZARDS
ANSULEX Low pH (continued)
Threshold
ANSUL INCORP ORATED, ONE STANTON STRE ET, MARINETTE , WI 54143-2542 Form No. F-90160-6 ©1999 Ansul Incorporated
503 p/n 2M-304989 Owners Manual WVF-886 Ventless Fryer
Limit Value:
Routes of Entry:
Eye Contact:
Skin Contact:
Inhalation:
Ingestion:
Signs and
Sym ptoms:
Medical Conditions Generally
Aggravated by Exposure:
Chemical Listed as
Carcinogen or Potential:
SECTION 6 - EMERGENCY AND FIRST AID PROCEDURES
Eye Contact:
Skin Contact:
Inhalation:
Ingestion:
SECTION 7 - SPECIAL PROTECTION INFORMATION
Respiratory Protection
(Specify Type):
Ventilation:
Pro tective
Othe r Prote ctive
Clothing or Equipment:
Gloves:
None Established
Irritant
Irritant
No t an ex pected route of entry. Can be irritating to muco us m em branes .
Irritating to mucous mem branes. Acute Oral LD (Sprague-Dawley rats) 825.5mg/kg.
Acute Exposure: Material irritates skin, eyes, and mucous membranes.
Chronic Exposure: None known.
50
None known.
National Toxicology
Program:
Flush and irrigate with water for 15 minutes while holding eyelids open.
If irritation persists, seek m edical attention.
Yes
No
I.A.R .C
Monographs:
Yes
No
OSHA
Yes
No
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.
N/A
Local
Exhaust:
N/A N/A
Rubber gloves for spill/leak
Mechanical
(General):
Eye
Protection:
Chemical goggles recommended during
spill/leak procedures.
Eye wash and safety showers are good safety practice.
SECTION 8 - SPECIAL PRECAUTIONS AND SPILL/LEAK PROCEDURES
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.
HAZARDOUS MATERIAL IDENTIFICATION SYSTEM
HAZARD I NDEX
4 SEVERE HAZARD 0 HEALTH
3 SERIOUS HAZARD
2 MODER ATE HAZARD 0 FLAMMABILITY
1 SLIGHT HAZ ARD
0 MINIMAL HAZARD 0 REACTIVITY
N/A = Not App lica ble ND A = No Da ta Available N/E = N ot Estab lished
ANSUL and ANSULEX are registered trademarks.
Intern et Add ress: http://ww w.ansu l.com
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
23
30
Page 26
TROUBLESHOOTING SUGGESTIONS
Problem Possible Cause Suggested Remedy
Unit will not operate (no
indicators lights lit)
Unit will not operate
(buzzer sounds)
Disconnected from electric power
Fire suppression system not set
CHECK FILTER light lit Filter pack, Pre-lter or bafe lter not in position Properly install lters
Filter nearing end of service life Arrange to replace lters in a timely manner
REPLACE FILTER light lit
Filter pack plugged Replace lter pack
Fire damper in exhaust collar has closed
One or more vacuum sensing lines or ports
plugged, or sensing line dislodged.
SERVICE REQUIRED
light lit (cooking appliance
not operating)
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.
Reconnect to electric power
Reset circuit breaker for unit
Contact an authorized Ansul®
distributor for repairs
Contact an authorized Wells service
agent for repairs
Contact an authorized Wells service
agent for repairs
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.
24
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Page 27
EXPLODED VIEW & PARTS LIST
Filter Maintenance
3
2
4
1
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
1
Baffle Filter: 16” x 20”
Part No: 2I-Z14670
3 4
Filter HEPA/Carbon Pack
Part No: N1-WL0171
Model: WVU48 Filter Assy
2
Pre-Filter Hood
Part No: 2I-Z16258
Pre-Filter Cage
Part No: M3-WL0230
SK2553 Rev. A , 8/27/2012
25
Page 28
EXPLODED VIEW & PARTS LIST
Universal Hood Internal Control
Internal Control Assy
Fig No. Part No Qty Description
1 2V-307913 1 DAMPER FIRE 8X9 WVU
2 N1-WL0244 1 TOP DISCHARGE SCOOP ASSY.
3 2E-300407 6 SWITCH MANUAL ADVANCE ROT
4 2K-Y8571 3 BUSHING SNAP 2 1/8
5 2K-Y1139 1 BUSHING HEYCO SB500-6
6 N1-Z14484 1 MOUNTING BRACKET, DOOR
7 2U-200577 2 MOTOR, FAN 240V, HI-OUTPU
8 2C-45201 4 SCREW 8-32X2 PH PAN HD MS
9 N1-WL0172 1 DUCTWORK ASSEMBLY
10 N1-Z14097 1 FRONT DISCHARGE VENTPANEL
11 2R-Z14532 2 CAM LATCH, SLOTTED
12 N1-Z14087 1 ACCESS DOOR, ELECT
13 N1-WL0171 1 FILTER HEPA/CARBON PACK
14 N1-WL0170 1 DOOR ASSY,FRONT ANSUL
15 2R-Z14429 1 HANDLE, 5”
16 2C-1810 2 WASHER 3/16 BURR STL NP
17 Included with #15 2
18 2D-Z14672 1 GREASE CUP
1
2
3
12
13
See Detail A
4
See Detail
10
11
B
8
9
14
18
17
15
16
5
6
4
7
Nameplate
19
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Model: WVU48 Universal Hood Internal Control
26
SK2554 Rev. A 2/13/2015
Page 29
EXPLODED VIEW & PARTS LIST
Universal Hood Internal Control (Detail A)
1
5
4
3
2
91213
11
6
7
8
9
10
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Detail A
Blower & Motor Assy
SK2555 Rev. - 1/16/2012
DETAIL A, Blower & Motor Assy
Fig No. Part No WV48FB Description
1 NI-WL0247 1 Blower & Motor Assy
2 Included w/ no 4 1
2C-31053 4 NUT #8-32 KEPS NICKEL
3
2C-1810 4 3/16 WASHER BURR STL NP
4 2U-Z14912 1 BLOWER & WHEEL ASSY
5 2A-Z15331 1 PRESSURE TAP TUBE FITTING
6 2C-Z15332 1 E-CLIP RETAINING RING 1/4”
7 2E-Z14913 1 RUN CAPACITOR, 10MFD, 370V
8 N1-Z15392 1 BRACKET, RUN CAPACITOR
9 2C-301522 4 SCREW 8X12 RPH PAN SELF DRILLING
10 N1-Z14911 1 BLOWER MOTOR MODIFIED
11 2C-Z15394 4 SPACER STAND-OFF, 7/16”
12 N1-Z15316 1 SIDE FLANGE, BLOWER HOUSING
13 N1-Z15317-1 1 GASKET TAPE 10.25 LG, BLOWER SIDE FLANGE
27
Page 30
EXPLODED VIEW & PARTS LIST
Universal Hood Internal Control (Detail b)
Previous Timer
Cube Relay
WS-Z17920
4
2
3
1
3
5
3
6
9
10
7
8
11
3
3
12
Detail B
Internal Control Panel Assy
DETAIL B, Internal Control Panel Assy
Fig No Part Number WVU48 Description
1 N1-Z15362 1 BRACKET, PRESSURE SWITCH
2 2E-Z14673 1 PRESSURE SWITCH
3 2C-Z7165 15 NUT 8-32 HEX SS W/EXT WSH
4 2E-302591 1 SWITCH VACUUM #2
5 N1-Z15531 1 BRACKET,HEPA PRESS.SWITCH
6 2E-Z15352 1 VACUUM SWITCH,HEPA FILTER
7 2C-08-07-0042 2 SCREW 8-32X5/8 RHP STL NP
8 2P-Z17415 1 TIMER,CUBE/ RELAY
9 2E-Z15365 1 PRESSURE SWITCH
10 N1-Z14886 1 BRACKET,PRESSURE SWITCH
11 2K-Y5093 2 BUSHING-SNAP #SB-1000-12
12 2J-44834 1 BUZZER 220V ROHS
SK2556 Rev. B 5/29/2014
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
28
Page 31
EXPLODED VIEW
Universal Hood Electrical Components
1
2
21
21
26
435
18
8
19
22
23112425
16
17
9
6 7
10
11
12
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
SK2557 Rev. A 5/11/2015
Electrical Components
13141513
29
Page 32
EXPLODED VIEW & PARTS LIST
Universal Hood Electrical Components
Fig No. Part No Qty Description Application
1 N1-Z14142 1 COVER, HOOD SIDE RIGHT
2 N1-WL0245 3 LED FLOODLIGHT, 45W CW w/TERM
3 N1-Z15418 1 MOUNTING PLATE, CTRL LIGHT
4 N1-WL0281 5 LIGHT SIGNAL, CLEAR LED w/TERM
5 N1-WL0250 1 CONTROL PANEL, FRONT ASSY
6 2M-Z14510 1 GRAPHIC PANEL W/ SWITCH
7 2M-306719 1 LOGO WELLS DIECAST SHIELD
8 2E-305295 1 SWITCH ROCKER 250V 10A GR
9 N1-Z15435 1 ELEC. AUTOMAN BKT. MODIFY
10 2E-Z15018 1 TRANSFORMER, 208/240 12V
11 2E-44514
12 2E-Z15353 1 RELAY, 120V COIL, SPNO
13 2C-1488 6 SCREW 6-32X3/8 RHP STL NP
14 2E-Z15335 1 TRANSFORMER, 208/240
15 WS-WL0282 1 TERMINAL BLOCK ASSY
16 2E-Z14960 1 CONTACTOR, 40A
17 2C-40680 2 NUT 10-32 HEX KEPS MS SS
18 2K-Y8571 3 BUSHING SNAP 2 1/8
19
20 N1-Z15344 1 COVER,SIDE ELECTRIC BOX
21 2K-8043
22 2E-Z19467 1 VARIABLE FREQUENCY DRIVE 50Hz
23 2C-Z7165 4 NUT 8-32 HEX SS W/EXT WSH 50Hz
24 2C-1487 2 SCREW 6-32X1/4 RHP STL NP 50Hz
25 N1-Z19440 1 VFD COVER 50Hz
26 2C-6349 8 SCREW #8X3/8 B THP STL NP 50Hz
N1-Z14141 1 COVER, HOOD SIDE LEFT
N1-Z19439 COVER,HOOD SIDE LEFT VFD 50Hz
1
2 50Hz
2
5 50Hz
Control Panel
RELAY 208-240V COIL
BUSHING SB 5/8” ID
60Hz
60Hz
30
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Page 33
EXPLODED VIEW & PARTS LIST
Universal Hood Suppression System
Front
7
6
1
21
12
3
4
Suppression System
Fig. No Part No WV48FB Description
1 2K-47269 8 ADAPTER 3/8IN QUICK CON A
2 2O-47267 1 NOZZLE ANSUL 1N
3 2O-307481 5 ADAPTER SWIVEL ANSUL
4 2O-Z17942 4 NOZZLE, #230
5 2C-Z15115 1 HEX HEAD PIPE PLUG 3/8NPT
6 2O-302931 1 NOZZLE 1 W
7 2O-304433 2 TANK SS ANSULEX 1.5 GALLO
8 2O-47272 1 PULLEY ELBOW
9 N1-Z15435 1 ELEC. AUTOMAN BKT MODIFY
10 2O-Z14918 1 ANSUL CARTRIDGE LT-30-R
11 2O-308131 1 REMOTE PULL STATION RED
12 2K-Z14561-1 4 PIPE, 3/8” NPT X 6.00” LG,SS
12
8
9
10
11
5
1
3
4
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
Suppression System
SK2738 Rev. - 1/22/2014
31
Page 34
EXPLODED VIEW & PARTS LIST
Universal Hood Detection System
Adapter 1/2” Quick Seal
Part No: 2T-Z15320
Thermal Detector-225°F
Part No: 2T-Z15320
Thermal Detector-275°F
Part No: 2T-Z16137
Detection System
SK2559 Rev. A 7/25/2012
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
32
Page 35
EXPLODED VIEW & PARTS LIST
Universal Hood Base Assy
3
2
1
17
4
15
16
5
5
6
7
8
9
10
11
12
2
M525 p/n 2M-Z17944 OpM WV48FB- Fryer & Broiler Ventless Hood
14
13
Model: WVU48 Base Assy
Base Assembly
Fig No. Part No WVU48 Description
1 N1-Z15193 2 BASE DEFLECTOR
2 2C-35487 66 SCREW 8-32X5/16 PH TR HD
3 2C-1825 16 WASHER #8 EXT STL NP
4 N1-WL0176 1 BASE,SUPPORT ASSY LFT
5 N1-Z14147 2 BASE,BACK SUPPORT
6 2C-6517 70 NUT 1/4-20 HEX STL NP
7 2C-A27469 70 WASHER,FLAT 1/4IN 7/8OD 1
8 2C-Z5555 70 BOLT 1/4-20 X .75 HEX SS
9 2C-31053 4 NUT 8-32 KEPS MS NICKEL
10 2P-70903-05 1 PLG BTN PLTD MTL 7/8
11 N1-WL0126 1 BOX, MANUAL PULL ASSEMBLY
12
13
N1-WL0180 1 COVER,BASE SIDE RT ASSY
N1-Z14152 1 COVER, BASE SIDE LEFT
2A-307628
2A-Z16259 LEG, 10” ADJ. 1/2-13 SS (Optional)
4
LEG 6 ADJ 1/2-13 SS
14 N1-WL0177 1 BASE,SUPPORT ASSY RT
15 2O-308131 1 REMOTE PULL STATION RED
16 2C-31730 2 SCREW 8-32X1/2 PH TR HD M
17 2C-6349 16 SCREW #8X3/8 B THP STL NP
SK2561 Rev. A 11/18/2013
33
Page 36
WELLS MANUFACTURING
10 Sunnen Dr., St. Louis, MO 63143
telephone: 314-678-6314
fax: 314-781-2714
www.wellsbloomfield.com
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