Wells WVU-1 User manual

WELLS BLOOMFIELD, LLC
10 Sunnen Dr., St. Louis, MO 63143
telephone: [phone]
fax: [phone]
www.wellsbloomfield.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
VENTLESS UNIVERSAL
MODULAR HOOD SYSTEM
for
ELECTRIC
COOKING
APPLIANCES
MODEL
WVU-1
WVU-1P
Manual Includes
INSTALLATION
USE & CARE
EXPLODED VIEW
PARTS LIST
WIRING DIAGRAM
521
p/n 2M-Z17085 Rev. (C) M521 130521
Model WVU-1

Unless otherwise specied, all commercial cooking
equipment manufactured by WELLS BLOOMFIELD, LLC 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 benet 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 BLOOMFIELD PRODUCTS.
This warranty is void if it is determined that, upon inspection
by an authorized service agency, the equipment has been
modied, 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 Bloomeld 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 Bloomeld 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, specic limitations
are shown in the Service Policy and Procedure Guide.
Wells Bloomeld authorized service agencies are located in
principal cities. This warranty is valid in the United States
and Canada and void elsewhere. Please consult your
classied telephone directory, your foodservice equipment
dealer or contact:
Wells Bloomeld, LLC
10 Sunnen Dr., St. Louis MO 63143 USA
phone [phone] or fax [phone]
for information and other details concerning warranty.
LIMITED WARRANTY STATEMENT
SERVICE POLICY AND PROCEDURE GUIDE and ADDITIONAL WARRANTY EXCLUSIONS
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 SHIPMENTARRIVES 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 Bloomeld 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.
SHIPPING DAMAGE CLAIM PROCEDURE
xi
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 specied 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.
M521 p/n 2M-Z17085 OpM WVU- Universal Hood

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
WARRANTY xi
SPECIFICATIONS 1
FEATURES & OPERATING CONTROLS 2
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION 4
INSTALLATION 4
ANSUL® INSTALLATION & SETUP 7
OPERATION 10
CLEANING INSTRUCTIONS 11
REQUIRED MAINTENANCE & MAINTENANCE LOGS 13
MSDS Ansulex Low-pH ™ 16
TROUBLESHOOTING SUGGESTIONS 18
WIRING DIAGRAM 19
EXPLODED VIEW & PARTS LIST 20
ANSUL® COMPONENTS 24
PARTS & SERVICE 25
CUSTOMER SERVICE DATA 25
Thank You for purchasing this Wells Bloomeld 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
1
INTRODUCTION
UNDER-HOOD APPLIANCE LIMITATIONS:
Appliance Maximum output of 22Kw
Cooking surface must be 34-38” (864—965mm) from oor, no more than 25.5”
(648mm) from back wall, no wider than 24” (610mm)
Appliance must be installed per manufactures instructions.
Electrical appliance only. Not Intended for gas red units.
1.
2.
3.
4.
MODEL VOLTS AMPS 1ø WATTS POWER SUPPLY
50/60Hz
1 ø
WVU-1 208/240V 6A 1.4kW
Ventilator hood requires NEMA6-15R receptacle.
Each cooking appliance requires a circuit sized to
the appliance power requirements, connected to an
interlock contactor with 208/240 volt control coil rating.

FEATURES & OPERATING CONTROLS
2
Universal Ventless Hood Features & Operating Controls
M521 p/n 2M-Z17085 OpM WVU- Universal Hood
AIRFLOW
FILTER PACK
(PARTIALLY
INSTALLED)
ANSUL® NOZZLE
ON SWIVEL
CONTROL PANEL/
FILTER ACCESS
SYSTEM
EXHAUST
OUTLET
ADJUSTABLE LEG
ANSUL®
PULL STATION
ELECTRICAL
CONNECTION BOX
APPLIANCE
LIGHTS
AREA UNDER HOOD
(LOOKING UP)
FILTER PACK
(IN PLACE)
GREASE
BAFFLE
(REMOVED)
GREASE CUP
ANSUL® NOZZLE
ON SWIVEL
AREA BEHIND FILTERS
(LOOKING UP) ANSUL® SERIES
DETECTOR W/
212ºF FUSIBLE LINK
ANSUL® SERIES
DETECTOR W/
165ºF FUSIBLE LINK
PRESSURE
SENSOR TAP
VENTILATOR
FAN
ANSUL®
NOZZLE
ANSUL®
NOZZLE
FILTER
GREASE BAFFLE
APPLIANCE
LIGHTS
CHECK FILTER CHANGE FILTER SERVICE REQUIRED
LIGHTED POWER
SWITCH (GREEN)
"CHECK FILTERS"
FILTER(S) OUT OF
POSITION INDICATOR
(AMBER)
"REPLACE FILTERS"
FILTERS NEARING
END OF SERVICE LIFE
INDICATOR (AMBER)
"SERVICE REQUIRED"
FILTERS EXPENDED
INDICATOR (RED -
SYSTEM SHUT DOWN)
CONTROL PANEL
PANEL LATCHES
IL1825 Rev. -

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
PRECAUTIONS AND GENERAL INFORMATION
3
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 400 cfm 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
Instructions included in the literature package shipped with the unit.
Also see Under Hood Cooking Appliance Limitations, page 1.
Do not connect or energize this appliance until all installation
instructions are read and followed. Damage to the ventilator and/or
cooking appliances 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 stream 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 qualied technical personnel.
Any procedure which requires the use of tools must be performed by a
qualied technician.
All supplied instructions, diagrams, schematics, parts breakdown
illustrations, notices and labels must remain with the appliance if it 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 insufcient
airow for proper operation.
Also, power to the cooking
appliances is interrupted if
either the lter pack or the
grease bafe is removed.
It is the responsibility of
the store management to
maintain sufcient spares
of lter packs to avoid
prolonged shutdown of the
ventilator when this lter
pack is expended. Filter
packs cannot be cleaned.
Wells Bloomeld assumes
no liability for loss of
business due to lter
related shutdown.

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 qualied
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 certied 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 the Installation
Instruction Sheet packed with the appliance before starting any
installation.
Read and understand all labels and diagrams attached to the
ventilator.
Carefully account for all components and accessories before
discarding packing materials.
COMPONENTS
Per module:
1 ea. Grease bafe
1 ea. Filter pack
1 ea Grease cup
Ansul® components - must be installed by an authorized ANSUL®
distributor only:
1 ea. Fire suppression agent tank
1 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.
AGENCY LISTING INFORMATION
4
M521 p/n 2M-Z17085 OpM WVU- Universal Hood
STD 4
This appliance conforms to NSF Standard 4 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

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
INSTALLATION (continued)
5
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 dened in the
Under Hood Cooking Appliance Limitations, page 1.
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 specications
listed in this manual, with local code requirements, and in accordance
with the STANDARD FOR VENTILATON CONTROLAND FIRE
PROTECTION OF COMMERCIAL COOKING OPERATIONS as
detailed in N.F.P.A96 (current edition).
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 specic installation . Any
restraint device must allow access to the back and sides of the unit to
provide for servicing and maintenance, and must not interfere with the
operation of the re suppression system.
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. Unit requires a minimum of 96” (oor to
overhead) to allow for adequate air circulation and replacement of
lters. Combustible object from the top must be 99” or higher, or 3”
above the unit while the control panel door is open.
Verify that the unit sits rmly on all legs or casters depending on your
model. 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 deection, legs
must be adjusted such that all legs are in rm contact with the oor.
Refer to the General Layout Data for required clearances (contact
Wells Technical Services “service@wells-bloomeld.com”). Maintain
required clearances between the appliance and adjacent combustible
surfaces.
•
•
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 ac-
cess to non-insulated elec-
trical 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. Damage to the
appliance will 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.

ELECTRICAL INSTALLATION
Refer to the nameplate on the ventilator. Verify ELECTRICAL
SERVICE POWER. Voltage and phase must match the nameplate
specications, and available electrical service amperage must meet or
exceed the listed amperage. Refer to specications listed on page 1
of this manual.
The ground lug of this ventilator must be connected to a suitable
building ground.
Remove the lower rear panel to access the cooking appliance
contactor and building alarm relay. Remove the appropriate knockout,
then wire the cooking appliance to the LOAD side of the contactor.
NOTE: If the provided power cord is not used, it is the responsibility
of the electrical contractor to provide suitable wiring, exible or ridgid
conduit, and an appropriate strain relief.
The cooking appliance under the ventilator hood must be connected
to the LOAD side of the cooking appliance contactor, located in the
electrical connection box. The contactor functions control the cooking
applance in the event of ventilator malfunction or appliance re.
The ventilator provides a dry contact relay connection for a building re
management system. This pilot-duty relay may be required by local
re codes, however, Wells Bloomeld strongly recommends that such
system be properly utilized in any case.
The alarm relay is activated by the Ansul® re detection system. If the
installation includes a building alarm system, connect to either the N.O.
or N.C. contacts of the relay (as required by the building alarm system).
The ventilator will operate properly, and the 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. The grease bafe and lter pack are in position and serviceable,
and the ventilator pressure sensing system is satised.
INSTALLATION
6
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
The 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.
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.
M521 p/n 2M-Z17085 OpM WVU- Universal Hood

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
INSTALLATION
7
DANGER
FIRE HAZARD
Fire suppression system
must be charged and certied
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.
FIRE SUPPRESSION SYSTEM INSTALLATION
FIRE SUPPRESSION SYSTEM is comprised of a container of
Ansulex® Low pH liquid re suppression media and a system
pressurization canister for each module, plus associated plumbing.
Actuation controls are contained in the Automan enclosure.
Two FUSIBLE LINKS are utilized for automatic actuation of the re
suppression system. Additionally, 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 for manual emergency
shutdown of cooking appliance power, and actuation of the re
suppression system.
Three NOZZLES disperse the re suppression media. Two inner
nozzles protect the fan and plenum. The third, front mounted, nozzle
is 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.
When the re suppression system discharges, cooking appliance
contactor and building re alarm relay are de-energized; and, the re
suppression media discharged. Fire supression media will form an
emulsion designed to both smother and cool the fuels in/on the cooking
appliance.

INSTALLATION
8
DANGER
BURN HAZARD
Any additional remote pull
station must NOT be installed
on the front of the cooking
appliances, nor forward of the
ventilator side panels.
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.
Manual pull station is factory
installed on the left side (facing
the unit. It may, however,
be relocated to the right side
of the ventilator hood by an
authorized Ansul® agent.
Standard practice recommends
that the manual pull station be
located on the side toward an
exit.
FIRE SUPPRESSION SYSTEM INSTALLATION (continued)
Two fusible links are used to detect re. One (165ºF) is located
between the grease bafe and lter pack, and is for protection from
a cooking appliance re. The other (212ºF) is located in the lter
plenum, and will protect against a re in the plenum. Either link
melting will discharge the re suppression media through all nozzles,
disable the cooking appliance and cause a buzzer to sound.
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.
M521 p/n 2M-Z17085 OpM WVU- Universal Hood
IL1819
INSTALL ON LEFT
SIDE OF HOOD
MANUAL PULL
STATION PIPING
IMPORTANT!
VACUUM FITTING
DO NOT INSTALL
DISCHARGE NOZZLE
HERE!
INSIDE OF HOOD
LOOKING UP
(FILTERS REMOVED)
212ºF
FUSIBLE LINK
FIXED
DISCHARGE
NOZZLES
SWIVEL
DISCHARGE
NOZZLE
INSIDE OF
HOOD
165ºF
FUSIBLE LINK
IL1817

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
INSTALLATION
9
NOTE:
The GREASE BAFFLE
and FILTER PACK actuate
position switches when they
are properly positioned. They
must be properly installed
for the under hood cooking
and appliance contactor to be
energized.
WARNING
SLIP AND FALL
HAZARD
DO NOT operate any
grease-producing cooking
appliance
(e.g. fryer or griddle) 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.
CAUTION
SLIP AND FALL
HAZARD
DO NOT operate any
cooking appliance unless the
condensate cup is installed.
Moisture dripping onto oor
can cause a slip and fall
hazard.
FILTER INSTALLATION
1. Release two catches holding control panel/lter access panel. Lift the
panel and raise the Prop Panel Rod to support and secure the panel in
the raised position.
2. 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 airow arrow points toward the fan.
Use the provided handle to raise and lower the lter pack.
3. Raise the panel and put the Prop Panel Rod back to its lowered
position, then lower the panel and secure the catches.
GREASE BAFFLE and GREASE CUP INSTALLATION
1. Install grease bafe from front. Engage the bafe in the retainer
slot. Push up until the bafe bottom clears the lower lip of the
retainer, then lower the bafe into the bottom retainer
2. Install GREASE CUP into brackets below grease bafe.
3. Install CONDENSATION CUP in brackets at bottom skirt of hood.
Note: Failure to install GREASE CUP will allow grease and moisture
from GREASE BAFFLE 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).
AIR
FLOW
FAN
CONTROL PANEL/
FILTER ACCESS PANEL
FILTER POSITION
SWITCH
PANEL SUPPORT
GREASE BAFFLE
POSITION SWITCH
IL1818

Control Panel
NOTE: Cooking appliances must be operated in accordance with the
manufacturer’s instructions.
During normal operation, VENTILATOR POWER ON (illuminated power
switch) will be the only light on the control panel that will be ON, when
the unit is operating properly.
If the CHECK FILTERS light illuminates, check both GREASE BAFFLE
and the HEPAAIR FILTER for proper installation.
If REPLACE FILTER light illuminates, replace FILTER PACK.
NOTE: REPLACE FILTERS 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 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.
If SERVICE REQUIRED light illuminates, lter pack is restricted to
the point of insufcient airow for proper operation. Ventilator is shut
down until the underlying clogged lter situation has been corrected.
Replace clogged item with a fresh lter pack 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 will be on during normal operation.
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 and cooking
appliance control relay are
disabled when REPLACE
FILTERS light is illuminated.
Note that the ventilator
cannot operate if the lter
pack is removed.
It is the responsibility of
the store management to
maintain sufcient spares
of lter packs to avoid
prolonged shutdown of the
ventilator when this lter is
expended.
Filter packs cannot be
cleaned.
Wells Bloomeld, LLC
assumes no liability for loss of
business due to lter related
shutdown.
OPERATION
10
M521 p/n 2M-Z17085 OpM WVU- Universal Hood
POWER
ON
OFF CHECK
FILTER REPLACE
FILTER SERVICE
REQUIRED
IL1820
ON DURING POWER UP

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
CLEANING INSTRUCTIONS
11
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. Disconnect unit from electric power and allow to cool.
Cover cooking appliance to prevent oil contamination.
2. Remove GREASE BAFFLE, GREASE CUP and CONDENSATE CUP.
3. Empty GREASE CUP and CONDENSATE CUP into an appropriate
grease collection receptacle.
4. Clean GREASE BAFFLE, GREASE CUP and CONDENSATE
CUP in a sink or dishwasher using mild detergent and warm water.
5. Dry components with a clean non-abrasive cloth. Reinstall
GREASE BAFFLE, GREASE CUP and CONDENSATE CUP 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
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.

CLEANING INSTRUCTIONS
12
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. Disconnect unit from electric power and allow to cool.
Cover cooking applaince to prevent oil contamination.
2. Remove GREASE BAFFLE, GREASE CUP, CONDENSATE CUP and
FILTER PACK.
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 FILTER PACK, GREASE BAFFLE, GREASE CUP and
CONDENSATE CUP.
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
proong system and/or re
suppression system.
Clean by wiping only.
M521 p/n 2M-Z17085 OpM WVU- Universal Hood

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
REQUIRED MAINTENANCE
13
USE AND MAINTENANCE SHALL BE INACCORDANCE WITH THE
STANDARD FOR VENTILATION CONTROLAND 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 qualied 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:
FIRE SUPRESSION SYSTEM FUSIBLE LINKS must be replaced.
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 qualied Ansul® service personnel only.
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.

14
M521 p/n 2M-Z17085 OpM WVU- Universal Hood
WELLS BLOOMFIELD, LLC
IL2144

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
15
Replace two (2) fire suppression links at cooking appliance: each link is rated @ 165ºF
WELLS BLOOMFIELD, LLC
Replace fire damper fusible link: rated @ 280ºF Max interval: 12 months
IL2145

16
M521 p/n 2M-Z17085 OpM WVU- Universal Hood

M521 p/n 2M-Z17085 OpM WVU- Universal Hood
17

18
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 41807 and Wells Bulletin 301646 are intended for use by authorizedAnsul® service
personnel only.
M521 p/n 2M-Z17085 OpM WVU- Universal Hood
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 authorizedAnsul® distributor for repairs
(buzzer sounds)
CHECK FILTER light lit Filter pack or grease bafe not in position Properly install lter pack and grease bafe
REPLACE FILTER light lit Filter pack nearing end of service life Arrange to replace lter pack 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 10 seconds, there is insufcient airow 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.