Wells WVO4HF Service Manual

WELLS MANUFACTURING

265 Hobson Street, Smithville, Tennessee 37166

telephone: [phone]

fax: [phone]

www.wells-mfg.com

OWNER'S MANUAL

WVOC- 4 SERIES

CONVECTION OVEN

and

4 HOTPLATE COOKTOP

with

UNIVERSAL

HOOD

506

MODELS:

WVO4HF
WVO4HS

Includes

INSTALLATION

USE & CARE

EXPLODED VIEW

PARTS LIST

WIRING DIAGRAM

Model
WVOC-4HF

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.

2M-304964 Rev. F

04/2018

LIMITED EQUIPMENT WARRANTY

Wells Manufacturing warranties new products to be free from defects
in material and/or workmanship for a period of one [1] year from the
date of original installation, except as noted below. Defects that occur
as a result of normal use, within the time period and limitations defined
in this warranty, will at Wells’ discretion have the parts replaced or

repaired by Wells or a Wells-authorized service agency.

THIS WARRANTY IS SUBJECT TO ALL LISTED CONDITIONS.

Repairs performed under this warranty are to be performed by a Wells­authorized service agency. Wells will not be responsible for charges
incurred or service performed by non-authorized repair agencies.

In all cases, the nearest Wells-authorized service agency must be used.

Wells will be responsible for normal labor charges incurred in the repair
or replacement of a warrantied product within 50 miles (80.5 km) of
an authorized service agency. Time and expense charges for anything
beyond that distance will be the responsibility of the owner. All labor
will need to be performed during regular service hours. Any overtime
premium will be charged to the owner. For all shipments outside the
U.S.A. and Canada, please see the International Warranty for specific
details.

It is the responsibility of the owner to inspect and report any shipping

damage claims, hidden or otherwise, promptly following delivery.

No mileage or travel charges will be honored on any equipment that is
deemed portable. In general, equipment with a cord and plug weighing
less than 50 lb. (22.7 kg) is considered portable and should be taken or

shipped to the closest authorized service agency, transportation prepaid .

CO NTAC T

Should you require any assistance regarding the operation or
maintenance of any Wells equipment; write, phone, fax or email
our service department. In all correspondence mention the
model number and the serial number of your unit, as well as
the voltage or type of gas you are using.

Business hours are 8:00 a.m. to 4:30 p.m. Central Standard Time

Telephone [phone]

Fax [phone]

Email [e-mail]

www.wells-mfg.com

WARRA

THE FOLLOWING WILL NOT BE COVERED UNDER WARRANTY.

• Any product which has not been installed, cleaned, maintained,
or used in accordance with the directions published in the appropriate

installation sheet and/or owner’s manual as well as national and local

codes, including incorrect gas or electrical connection. Wells is not liable
for any unit which has been mishandled, abused, misapplied, subjected
to chlorides, harsh chemicals, or caustic cleaners, damaged from
exposure to hard water, modified by unauthorized personnel, damaged
by flood, fire, or other acts of nature [or God], or which have an altered
or missing serial number.

• Installation, labor, and job checkouts, calibration of heat controls, air

and gas burner/bypass/pilot adjustments, gas or electrical system
checks, voltage and phase conversions, cleaning of equipment,
or seasoning of griddle surface.

• Replacement of fuses or resetting of circuit breakers, safety controls,
or reset buttons.

• Replacement of broken or damaged glass components, quartz heating
elements, and light bulbs.

• Labor charges for all removable parts in gas charbroilers and hotplates,
including but not limited to burners, grates, and radiants.

• Any labor charges incurred by delays, waiting time, or operating
restrictions that hinder a service technician’s ability to perform service.

• Parts that fail or are damaged due to normal wear or labor for

replacement of Items that can easily be replaced during a daily cleaning
routine. such as but not limited to silicone belts, PTFE non-stick sheets,
knobs, control labels, bulbs, fuses, quartz heating elements, baskets,
racks, and grease drawers.

• Components that should be replaced when damaged or worn, but have
been field-repaired instead [eg. field-welded fry pots].

• Any loss of business or profits.

ADDITIONAL WARRANTIES

Specialty/chain specific versions may also have additional and/or
extended warranties.

NTY EXCLUSIONS

PRODUCTS PARTS LABOR

universal ventless hoods 2 years 1 year

canopy hoods 2 years 1 year

“Cook’n Hold” equipment [HW10,

HWSMP, LLSC7, LLSC7WA, LLSC11,

2 years 1 year

an d LLSC 1 1WA]

cast iron grates, burners, and burner

shields

original Wells parts sold to repair

Wells equipment

1 year

90 days

Service First 1 year

The fore going warrant y is in lieu of any and a ll other warranti es expresse d or implied and c onstitutes the e ntire warranty. 2M-Z22393 • Rev A • 02.2018

TABLE OF CONTENTS

WARRANTY ................................................................

SPECIFICATIONS ....................................................... 1

FEATURES & OPERATING CONTROLS ................... 2

PRECAUTIONS & GENERAL INFORMATION ............ 6

AGENCY LISTING INFORMATION ............................. 7

INSTALLATION ........................................................... 8

OPERATION ................................................................ 13

CLEANING INSTRUCTIONS ....................................... 18

TROUBLESHOOTING SUGGESTIONS ..................... 22

MAINTENANCE INSTRUCTIONS ............................... 23

MSDS (Ansulex Low pH) ............................................. 26

MAINTENANCE SCHEDULES .................................... 28

ANSUL® COMPONENTS ........................................... 30

EXPLODED VIEW & PARTS LIST .............................. 31

WIRING DIAGRAM ...................................................... 36

PARTS & SERVICE....................................................... 41

CUSTOMER SERVICE DATA ..................................... 41

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 the information needed to properly install this appliance, and to use and care for
the appliance in a manner which will ensure its optimum performance.

SPECIFICATIONS

MODEL VOLTS WATTS

WVO4HF

WVO4HS

Minimum clearances required from unit to nearest

M506 2M-304964 Owners Manual WVOC-4H

inches n/a 6 6 19

millimeters n/a 152 152 483

L1 L2 L3

208 11,500 32 31 26 n/a

240 14,100 36 35 30 n/a

208 12,500 36 35 34 n/a

240 16,500 41 40 39 n/a

combustible surface or object.

BACK SIDE BOTTOM TOP

AMPS 3ø

AMPS 1ø

1

FEATURES & OPERATING CONTROLS

Fig. 1 Ventilator Section Features & Operating Controls

2

M506 2M-304964 Owners Manual WVOC-4H

FEATURES & OPERATING CONTROLS (continued)

VENTILATOR SECTION

ITEM DESCRIPTION COMMENT

1 NAMEPLATE

a6.

a10. MANUAL PULL STATION

FIRE SUPPRESSION
AGENT TANK (1.5 gal.)

8 ADJUSTABLE (FRONT) LEG Allows the unit to be leveled.

9 RIGID (REAR) CASTER

Gives Manufacturer, Model and Serial Number information.

Also lists electrical specications.

Container for Ansulex™ Low-pH liquid re suppression liquid.

Allows the unit to be easily positioned by lifting the front of the unit
slightly.

Provides a means of manual activation of the re suppression

system. PULL ONLY IN CASE OF FIRE!

a11. FUSIBLE LINKS

12 LOWER REAR ACCESS PANEL

a15. DISCHARGE NOZZLE Fire suppression media discharges here (2 places).

16 GREASE BAFFLE Extracts and drains most grease and moisture from the air ow.

18 PRE-FILTER ASSEMBLY

19 HEPA/CHARCOAL FILTER PACK

22 GREASE CUP Collects grease/moisture drained from grease trough (23).
23 GREASE TROUGH Directs grease/moisture removed by grease bafe to grease cup.

28 VENTILATOR EXHAUST DUCT

a31. STATUS INDICATOR

38 POWER CORD 6’ cord and cap. Plug for NEMA 15-60R (receptacle by user).
40 FUSES Provide over-current protection of cooking appliance.

41 POWER CONTACTOR

42 BUILDING FIRE ALARM RELAY Reports re alarm condition to building re management system.
43 GROUND LUG Ground wire of power cord connects here.

44 INTERLOCK TERMINAL

Automatically activates re suppression system in the event of re
on the cooktop.

Allows access to Ansul® re suppression agent tank (a6) and

controls also access to main power contactor (41).

Comprises the PRE-FILTER FRAME and a replaceable PRE­FILTER. Stops larger particles of grease from reaching the FILTER
PACK for reduced maintenance costs.

Stops most grease and smoke particles. Also assists in some
cooking odor removal.

Exit point for ventilator airow - on top left rear of unit.

DO NOT BLOCK

Displays status of re suppression system (COCKED - FIRED) If

FIRED, a buzzer will sound continuously.

Energizes cooktop only while ventilator section is sensed as
operational.

Provides connection for shut-down control by building re

management system.

53 FILTER INTERLOCK SWITCHES

M506 2M-304964 Owners Manual WVOC-4H

56 VENTILATOR FAN Provides air movement for ventilation.
58 SIDE SPACERS Maintain required 6: spacing from combustible surfaces.
70 COOLING FAN Provides cooling for cooktop controls.

Proper installation of grease bafe and lter pack close these

switches in ventilator sensor circuit. Provides air movement for
ventilation.

3

FEATURES & OPERATING CONTROLS (continued)

V1

V2 V3 V4 V5 V6

INSIDE

OVEN

RACK SUPPORTS

OVEN RACK

FAN
BAFFLE

HEATING
ELEMENTS

BLOWER
FAN

C.04

C.03

C.02

C.01

C.05

C.06

C.07

C.08

C.09

C.10

C.11

CONTROL

PANEL

IL2911

ANSUL®

PULL STATION

CONTROL

PANEL

TRIM RING

HEATING
ELEMENT

SPIRAL-TYPE

HEATING

ELEMENT

SOLID
PLATE

HEATING

ELEMENT

WVOC-4HF COOKTOP WVOC-4HS COOKTOP

DRIP PAN

H.01 H.02

Fig. 2 Ventilator Section Controls & Indicator Lights

Fig. 3 Cooktop Section Controls & Indicator Lights

Fig. 4 Convection Oven Operating Features & Controls

M506 2M-304964 Owners Manual WVOC-4H

4

FEATURES & OPERATING CONTROLS (continued)

Item NO. Description Comments

VENTILATOR SECTION CONTROLS

V1 POWER SWITCH

V2 POWER ON INDICATOR

V3 CHECK FILTERS ALARM INDICATOR GREEN. Glows when POWER switch is ON.

V4* REPLACE PREFILTER ALARM INDICATOR

V5* REPLACE FILTER PACK ALARM INDICATOR

V6* SERVICE REQUIRED ALARM INDICATOR

* See PRECAUTIONS & GENERAL INFORMATION, pages 6 & 7 for special procedures regarding prelters and lter packs.

COOKTOP SECTION CONTROLS - HOTPLATE

H.01 POWER ON INDICATOR

H.02 HOTPLATE CONTROL Innite switch control of temperature of one hotplate section.

CONVECTION OVEN SECTION CONTROLS

C.01 POWER-OFF-FAN SWITCH Switch to turn oven ON, OFF or select FAN only.

C.02 FAN LOW-OFF-HIGH SWITCH Switch to turn fan ON, and to select fan speed.

C.03 OVEN POWER INDICATOR AMBER. Glows when oven is turned ON.

C.04 HEAT INDICATOR AMBER. Glows when heating elements are energized.

C.05 DIGITAL DISPLAY

C.06 OVEN TIME CONTROL Adjust programmed cooking time.

C.07 OVEN TEMP CONTROL Adjust programmed cooking temperature.

C.08 START TIMER KEY Begin a timed cook cycle.

C.09 ACTUAL TEMP KEY Press to display current oven temperature.

C.10 PGM KEYS Press to select pre-programmed time/temperature.

C.11 CANCEL KEY Press to cancel a program in progress.

Energizes blower motor. If, after 10 seconds, proper conditions
are met, cooktop is energized.

AMBER. Glows if one or more lters are out of position.
Check all lters and bafes for proper installation.

AMBER. Glows when PREFILTER is approaching the end of its
service life and must soon be replaced.

AMBER. Glows when FILTER PACK is approaching the end of
its service life and must soon be replaced. RED. Glows when
PREFILTER and/or FILTER PACK has reached the end of its

service life and is too loaded to allow sufcient air ow. Filter

MUST be replaced. Appliance is SHUT DOWN until expended

lters are replaced.

AMBER. Glows when associated temperature control is turned
ON.

Displays time and temperature information.

Time remaining in program (minute : second)

Programmed temperature (ºF)

M506 2M-304964 Owners Manual WVOC-4H

5

PRECAUTIONS AND GENERAL INFORMATION

DANGER

ELECTRIC SHOCK HAZARD

DO NOT SPRAY WATER ON OR AROUND

ELECTRICAL EQUIPMENT

DO NOT WASH FLOOR NEAR ELECTRICAL

EQUIPMENT WITH WATER SPRAY

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. Damage
to the appliance will result if
these instructions are not
followed.

NOTE: Fire suppression system and all associated components
must only be serviced by an authorized Ansul® Distributor. All setup,

charging, repair and/or adjustment of the re suppression system must

be performed by an Authorized Ansul® Distributor ONLY.

IMPORTANT: If a remote pull station is installed, both rear casters
(9) must be replaced with legs to deter moving the unit. MOVING AN
APPLIANCE WITH A REMOTE PULL STATION WILL DISCHARGE
THE FIRE SUPPRESSION SYSTEM.

This Ventless Cooking System™ is designed to help reduce odor
emissions, but will not completely eliminate cooking odors. Air

exchange at the installation site must comply with the requirements of
the local jurisdictional authority. To ensure that odors do not build-up,
recommended minimum air exchange is 300 - 400 cfm of outside air
into and out of the area where the unit is used. Recommend use of
wall fan and wall switch, to be supplied by user.

This appliance is intended for use in commercial establishments
only.

This appliance is intended

to prepare 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.

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.

Disconnect this appliance from electrical power before performing any
maintenance or servicing.

Do not splash or pour water on, in or over any exposed element,
control, control panel or wiring.

DO NOT submerge pre-lter or lter pack in water.

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.

This manual is considered to be a permanent part of the appliance.
This manual and 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.

M506 2M-304964 Owners Manual WVOC-4H

6

PRECAUTIONS AND GENERAL INFORMATION (continued)

OPERATIONAL NOTES:

REPLACE PREFILTER and REPLACE FILTER PACK indicator lights
provide a timely warning that a system shut-down is imminent.

The actual time between the indicator light coming on and the loss of

cooking appliance power will depend upon the cooking conditions.

Anytime a dirty PRE-FILTER is replaced, the system airow will
increase. If the condition of the FILTER PACK is marginal, the
REPLACE FILTER PACK light could then come on. If this happens,
a fresh FILTER PACK must be installed within a reasonably short time.

Use only genuine Wells replacement parts and lters, call

[phone] or your authorized Wells service agent. Parts supplied
by others will void your warranty and may not provide safe operation.

Loss of airow through the old lter pack will soon cause a system
shut-down when the airow falls below minimum vapor capture levels.

KEEP SPARE FILTER PACKS ON HAND.

IMPORTANT: If you decide to “get the most” out of the old lter pack,

and continue to use it until a system shut-down happens, it is advisable

to have a fresh lter pack readily at hand, and have someone available

who is capable of replacing it. Otherwise, you may experience an
extended down time, with consequent associated loss of business.

The manufacturer assumes no liability for loss of business due to
a system shutdown caused by a dirty pre-lter and/or lter pack

(i.e. red SERVICE REQUIRED light is on), when the user fails to

have the proper replacement pre-lter and/or lter pack on hand.

The Ventless Cooking System™ hood is designed as part of a WELLS
cooking appliance only. No other use of this product is authorized by

the manufacturer or its agents. Wells Mfg. assumes no liability for the
use of this equipment with products by any other manufacturer’s, or for
use of this equipment with any Wells Manufacturing product other than

in factory certied applications.

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.

This appliance is listed under UL File E146882.

Fig. 5 Ventilator

Warning
Indicators

STD 4

E146882

M506 2M-304964 Owners Manual WVOC-4H

7

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.

WARNING:

FIRE HAZARD

Avoid storing ammable or

combustible materials near
the appliance.

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
appliance.

Carefully account for all components and accessories before

discarding packing materials. Store these components in or near the

appliance for later use. These items must be installed before operating
the appliance.

1 ea. FIRE SUPPRESSION AGENT (ANSULEX® Low pH, 1.5 GAL.)

See Material Safety Data Sheet, page 28.

1 ea. FIRE SUPPRESSION MEDIA TANK

1 ea. FIRE SUPPRESSION TANK CHARGING CARTRIDGE

1 ea. GREASE BAFFLE

1 ea. FILTER PACK ASSEMBLY

1 ea. PRE-FILTER HOLDER with PRE-FILTER

1 ea. GREASE CUP

1 ea. GREASE TROUGH

2 ea. 6” SIDE SPACERS
1 ea. LITERATURE PACKAGE

Additionally:

1 ea. FAN BAFFLE
2 ea. RACK SUPPORTS
3 ea. CONVECTION OVEN RACKS

SETUP

Setup the appliance only on a rm level surface. Non-combustible

material is recommended.

Refer to the Installation Instruction Sheet for required clearances.
Maintain required clearances between the appliance and adjacent
combustible surfaces. Verify 6” left and right side clearances to
combustible construction. This appliance requires a minimum of 8 ft

(96”) (oor to overhead) to allow for adequate exhaust.

IMPORTANT: Provided 6” side spacers (item 58) must be installed on

the appliance.

Verify that the VENTILATOR HOOD ASSEMBLY is properly and

securely assembled to the cooking appliance before beginning the

installation procedure.

If a remote manual pull station is to be installed, replace the rear
casters with legs.

Level the unit after it is in its nal position. Using a spirit level, verify
that the unit is level front-to-back and side-to-side.

M506 2M-304964 Owners Manual WVOC-4H

8

INSTALLATION (continued)

SERVICE TECHNICIAN INSTALLATION NOTES

An Ansul® technician must charge and arm the re suppression system

before the ventilator blower will operate. See page 10.

Installation and start up must be performed by an Authorized
Installation Company.

Installer must complete the WARRANTY REGISTRATION form, and
record appliance installation particulars on the CUSTOMER SERVICE
DATA form in this manual.

Certain codes require cooking equipment to be restrained with a

RESTRAINT DEVICE. 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 EQUIPMENT
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 FIRE SUPPRESSION SYSTEM.

ELECTRICAL INSTALLATION

1. This appliance must be installed by a licensed electrician in
accordance with all applicable codes and ordinances.

Electrical connection terminal block and ground lug are accessible

by removing the right side panel.

2. Refer to the nameplate on the right side of the appliance. Verify the
ELECTRICAL SERVICE POWER. Voltage and phase must match

the nameplate specications, and available electrical service
amperage must meet or exceed the specications listed on page 1

Wiring must be no less than 4 AWG solid copper wire, rated for at
least 90ºC.

NOTE: Wire gauge, insulation type and temperature rating , as
well as type, size and construction of conduit, must meet or exceed

applicable specications of local codes and of the National

Electrical Code.

3. This appliance must be connected to a suitable building ground.
The equipment ground connection is marked “ “.

4. The appliance is shipped from the factory wired for 3-phase
electrical service. Refer to the Wiring Diagram included with this

appliance, and verify that eld wiring conforms to this diagram.

IMPORTANT: This appliance is not approved for 1Ø operation.
Conversion of this appliance to single-phase operation will void the
warranty.

M506 2M-304964 Owners Manual WVOC-4H

IMPORTANT!

Verify that this VENTILATOR

and food cooking equipment

installation is in compliance

with the specications listed

in this manual, with local
code requirements, and in
accordance with N.F.P.A
96 (THE STANDARD FOR
VENTILATION CONTROL
AND FIRE PROTECTION
OF COMMERCIAL
COOKING OPERATIONS

- current edition).

THIS IS THE
RESPONSIBILITY
OF THE INSTALLER

DANGER

ELECTRIC
SHOCK
HAZARD

ELECTRIC CONNECTIONS
MUST BE MADE BY A
LICENSED ELECTRICIAN

Electrical shock will cause

death or serious injury.

CAUTION:

ELECTRIC
SHOCK HAZARD

The ground lug of this
appliance must be connected
to a suitable building ground.
NOTE: This appliance
requires a dedicated 60
Amp electrical branch circuit
protection.

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.

9

INSTALLATION (continued)

FIRE SUPPRESSION

AGENT DISPENSING

NOZZLES (2 PLACES)

ALL MODELS SHIP

WITH 2 FACTORY-

INSTALLED

FUSIBLE LINKS

MANUAL PULL

STATION

LOCATION

REAR CASTERS

REPLACED WITH

LEGS WHEN A

REMOTE MANUAL

PULL STATION

IS INSTALLED

REMOVE REAR PANEL

FOR ACCESS TO FIRE

SUPPRESSION SYSTEM

CONTROLS

IL2146

THE FIRE SUPPRESSION
SYSTEM MUST BE
CHARGED AND CERTIFIED
BY AN AUTHORIZED
ANSUL® DISTRIBUTOR.
NEVER ATTEMPT TO
MODIFY OR BYPASS
THE FIRE SUPPRESSION
SYSTEM. AN
UNCONTROLLED FIRE CAN
CAUSE SERIOUS INJURY,
DEATH AND/OR PROPERTY

LOSS.

IMPORTANT: The FIRE

SUPPRESSION SYSTEM
must be SET-UP and
CHARGED by an authorized
Ansul® distributor before the
ventilator blower will operate.

NOTE: If the re

suppression system is
discharged, a buzzer will
sound continuously and

the cooking appliance will

remain inoperable until the

re suppression system

is serviced. Recharging
and resetting must be
performed by an authorized
Ansul® distributor ONLY.
Charging of the Ansul
Fire Suppression system
must be in accordance
with Ansul® Design,
Installation, Recharge
and Maintenance Manual.

(Ansul® #418087-05)

DANGER

FIRE
HAZARD

FIRE SUPPRESSION SYSTEM INSTALLATION

1. Any REMOTE MANUAL PULL STATION must be installed by an
authorized ANSUL® distributor in accordance with the
AUTHORITY HAVING JURISDICTION.

NOTE: If a REMOTE MANUAL PULL STATION is installed, moving

the unit for servicing will cause the Ansul® system to discharge.

In this case, the unit must only be installed with four xed legs

(i.e. remove rear casters and replace with legs). Additional legs
may be ordered through an Authorized Wells Service Agency. See

page 25.

2. The FIRE SUPPRESSION SYSTEM is comprised of a
pressurized cartridge
& container of liquid

re suppressant, with

associated plumbing and
controls. It utilizes factory
installed FUSIBLE LINKS
for automatic actuation,
and a factory installed
MANUAL PULL STATION
for manual actuation.
Two NOZZLES are used

to disperse the liquid re

suppression media.

3. When the re suppression

system activates, the

re suppression media

is discharged, both the

cooking appliance and

the ventilator are de­energized, and a buzzer
will sound continuously.

The re suppression

media will form an emulsion designed to both smother and cool the

re.

Call your Authorized Ansul® Distributor immediately for service.

NOTE: See page 28 for the Material Safety Data Sheet for the re

suppression agent.

4. 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 horizontally.

10

Fig. 6 Fire Suppression System

M506 2M-304964 Owners Manual WVOC-4H

INSTALLATION (continued)

FILTER
RAIL

FILTER
HOOK

FILTER PACK

PRE-FILTER
ASSEMBLY

GREASE
BAFFLE

GREASE
TROUGH

GREASE
CUP

AIR FLOW

HOLDER CLIP

FILTER PACK
POSITION
SWITCH

GREASE BAFFLE
POSITION
SWITCH

FILTER PACK
SEAL

PRE-FILTER
NOTE: AIR FLOW ARROW
POINTS FROM
INSTALLER WHEN
PROPERLY INSTALLED

AWAY

FILTER
FRAME

AIR FLOW

NOTE: PRE-FILTER IS SENSED
AS BEING IN POSITION BY THE
PRESSURE DROP ACROSS IT.

FILTER HOOK

FILTER
HANDLE

FILTER PACK

SEAL

HOLDER CLIP

CLIPS ONTO

LEDGE

WALL OF UNIT

PRE-FILTER

IL2147

FILTERS INSTALLATION

FILTER PACK: Ships installed in the hood. If the FILTER PACK is not

in position, the CHECK FILTERS indicator will light.If the FILTER
PACK becomes clogged, the REPLACE FILTER PACK indicator will
glow.

To install the FILTER PACK: Position the lter pack with the charcoal

portion UP. Slide the lter pack toward the rear of the unit until it
contacts the guides on the back panel. Push the lter pack UP into
the upper opening until it rests rmly against the lter pack seal.

When up in position, holder clips can be snapped over wall ledge on
each side. To remove FILTER PACK: Grasp both holder clips and
pull INWARD until the clips clear the sidewall ledge. Then, pull the

lter pack down and out.

PRE-FILTER: The PRE-FILTER ships in the FILTER FRAME. If the

PRE-FILTER is not in position, or if the PRE-FILTER is not in the
FILTER FRAME, the CHECK FILTERS indicator will light.
If the PRE-FILTER becomes clogged, the REPLACE PRE-FILTER
indicator will glow.

To install the PRE-FILTER: Pay attention to the air ow markings.

The AIR FLOW arrow will point away from the installer. Slide the

assembly up into the front opening, behind the upper lter rail.

While pressing slightly against the bottom of the assembly, pull the
FILTER HANDLE toward you so as to engage the FILTER HOOK

over the lip of the top lter rail. Then lower and seat the assembly
into the top indentation of the lower lter rail.

GREASE BAFFLE: If the GREASE BAFFLE is not in place, the CHECK

FILTERS indicator will glow.

To install the GREASE BAFFLE: Slide the grease bafe up into

the indentation of the upper lter rail, then lower and seat it into the
bottom indentation of the lower lter rail. Pull toward you and

downward to verify the GREASE BAFFLE is properly seated in the
lower frame rail.

NOTE:

The GREASE BAFFLE
and FILTER PACK activate
mechanical switches, and
the PRE-FILTER activates
a vacuum switch, to verify

that the lter elements are

in their proper positions.

All lter elements must be

properly installed or the

cooktop will not be

energized. Also, the
CHECK FILTERS indicator
will light.

IMPORTANT:

The lter hook prevents

the PRE-FILTER
from being drawn in
during operation. After
installation, press against

the top of the lter frame to

verify proper engagement

of the lter hook over the
lip of the top lter rail.

Use only genuine Wells

parts and lters, call

[phone] or your
authorized Wells service
agent. Parts supplied
by others will void your
warranty and may not
provide safe operation.

M506 2M-304964 Owners Manual WVOC-4H

Fig. 7 Filter Installation

11

INSTALLATION (continued)

WARNING

SLIP / FALL
HAZARD
SPILLED OIL

DO NOT OPERATE UNLESS
THE GREASE CUP IS
INSTALLED.

Oil and moisture will drip onto

the oor and falls may result.

Death or serious injury may
result from slipping and falling

GREASE TROUGH AND GREASE CUP INSTALLATION

1. Install the GREASE TROUGH into the brackets below the grease
bafe.

2. Install the GREASE CUP on the right side of the unit, directly

below the grease trough.

OVEN RACK INSTALLATION

1. Install fan bafe. Use care around the fan. The blades are sharp.

2. Install one rack support on the fan bafe, and one rack support on

the left wall of the oven cavity.

3. Install racks as needed for the product being prepared.

CAUTION:

BURN HAZARD

DO NOT OPERATE UNLESS
GREASE TROUGH IS
INSTALLED.

Moisture will drip into the hot

cooking surface, causing

splattering of hot liquids.
Serious injury can result from
contact with hot splatter.

Fig. 8 Oven Rack Installation

M506 2M-304964 Owners Manual WVOC-4H

12