Wells Manufacturing WVU-1 Operation Manual

WELLS BLOOMFIELD, LLC

10 Sunnen Dr., St. Louis, MO 63143

telephone: [phone]

fax: [phone]

www.wellsbloomfield.com

OWNERS MANUAL

VENTLESS UNIVERSAL

MODULAR HOOD SYSTEM

521

for

ELECTRIC

COOKING

APPLIANCES

Model WVU-1

MODEL

WVU-1

Manual Includes

INSTALLATION

USE & CARE

EXPLODED VIEW

PARTS LIST

WIRING DIAGRAM

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-307886 Rev. (B) M521 110412

LIMITED WARRANTY STATEMENT

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.

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 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.

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 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.

xi

M521 p/n 2M-307886 OpM WVU- Universal Hood

TABLE OF CONTENTS

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

INTRODUCTION

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.

ELECTRICAL SPECIFICATIONS

VOLTS

MODEL

WVU-1 208/240V 6A 1.4kW

50/60Hz

1 ø

AMPS 1ø WATTS POWER SUPPLY

Ventilator hood requires NEMA 6-15R 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.

UNDER-HOOD APPLIANCE LIMITATIONS:

Appliance Maximum output of 22Kw

1.

Cooking surface must be 34-38” (864—965mm) from oor, no more than 25.5”

2.

(648mm) from back wall, no wider than 24” (610mm)

Appliance must be installed per manufactures instructions.

3.

Electrical appliance only. Not Intended for gas red units.

4.

M521 p/n 2M-307886 OpM WVU- Universal Hood

1

FEATURES & OPERATING CONTROLS

A

IR

F

L

O

W

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. -

Universal Ventless Hood Features & Operating Controls

2

M521 p/n 2M-307886 OpM WVU- Universal Hood

PRECAUTIONS AND GENERAL INFORMATION

This ventilator hood is part of an engineered system and is intended for
use in commercial establishments only.

This ventilator is intended
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.

M521 p/n 2M-307886 OpM WVU- Universal Hood

This appliance is made in the USA. Unless otherwise noted, this
appliance has American sizes on all hardware.

for commercial establishments for use

3

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.

AGENCY LISTING INFORMATION

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.

STD 4

UL710B

This appliance is ETL listed.

Recurculating System

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.

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.

IMPORTANT:

After cooking appliances

are positioned under the
hood, swivel nozzles must
be positioned per Ansul®
recommendations.

M521 p/n 2M-307886 OpM WVU- Universal Hood

4

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 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 CONTROL AND FIRE
PROTECTION OF COMMERCIAL COOKING OPERATIONS as
detailed in N.F.P.A 96 (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.

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 O F
DAMA G E

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. 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 (GLD 2M-307739-1) for required
clearances. Maintain required clearances between the appliance and
adjacent combustible surfaces.

M521 p/n 2M-307886 OpM WVU- Universal Hood

5

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.

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

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.

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.

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-307886 OpM WVU- Universal Hood

6

INSTALLATION

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.

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.

M521 p/n 2M-307886 OpM WVU- Universal Hood

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.

7