Wells WVOC-4HC, WVOC-4HF, WVOC-4HS User Manual

WELLS MANUFACTURING COMPANY

2 ERIK CIRCLE, P. O. Box 280

Verdi, NV 89439

Customer Service [phone] Ext.502

fax: [phone]

www.wellsbloomfield.com

OPERATION MANUAL

WVOC- 4 SERIES

CONVECTION OVEN

4 HOTPLATE COOKTOP

UNIVERSAL HOOD

506

and

with

Model
WVOC-4HF

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

WVOC-4HC

WVOC-4HF

WVOC-4HS

Includes

INSTALLATION

USE & CARE

IMPORTANT: DO NOT DISCARD THIS MANUAL

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 304964 Rev. (-) M506 031102 cps

LIMITED WARRANTY STATEMENT

Unless otherwise specified, all commercial cooking equip­ment manufactured by WELLS MFG. CO. 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 first, and is for the benefit 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 MFG. CO. PRODUCTS. This warranty is void if it
is determined that, upon inspection by an authorized service
agency, the equipment has been modified, misused, misap­plied, improperly installed, or damaged in transit or by fire,
flood or act of God. It also does not apply if the serial name­plate has been removed, or if service is performed by unau-

SERVICE POLICY AND PROCEDURE GUIDE

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 specified 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, air filters;
and, normal maintenance functions including
adjustments of thermostats, adjustment of micro
switches and replacement of fuses, indicating lights
and filters 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

thorized personnel. The prices charged by Wells Mfg. Co.
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 Mfg. Co. 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,
specific limitations are shown in the Service Policy and Pro­cedure Guide. Wells Mfg. Co. authorized service agencies
are located in principal cities. This warranty is valid in the
United States and Canada and void elsewhere. Please con­sult your classified telephone directory, your foodservice
equipment dealer or write the Factory Service Department,
Wells Manufacturing Company, P.O. Box 280, Verdi, Ne­vada 89439, phone [phone] or [phone], for
information and other details concerning warranty.

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 non­warranty 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 file
“CONCEALED DAMAGE” claim with them. This
should be done within fifteen (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

TABLE OF CONTENTS

WARRANTY xi
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
PARTS & SERVICE 31
CUSTOMER SERVICE DATA 31

INTRODUCTION

Thank You for purchasing this Wells Manufacturing Co. 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

AMPS 3ø

MODEL VOLTS WATTS L1 L2 L3 AMPS 1ø

WVOC-4HC 208 12,200 35 34 32 n/a

240 16,100 40 39 37 n/a

WVOC-4HF 208 10,700 32 31 26 n/a

240 14,100 36 35 30 n/a

WVOC-4HS 208 12,500 36 35 34 n/a

240 16,500 41 40 39 n/a

Minimum clearances required from unit to nearest combustible surface or object.

BACK SIDE BOTTOM TOP

inches n/a 6 6 19

millimeters n/a 152 152 483

1

FEATURES & OPERATING CONTROLS

Fig. 1 Ventilator Section Operating Features & Controls

2

VENTILATOR SECTION

FEATURES & OPERATING CONTROLS (continued)

ITEM

1.

a6.

8.

9.

a10.

a11.

12.

a15.

16.

18.

19.

22.

23.

28.

a31.

38.

40.

41.

42.

43.

44.

53.

56.

58.

70.

DESCRIPTION

NAMEPLATE

FIRE SUPPRESSION
AGENT TANK (1.5 gal.)

ADJUSTABLE (FRONT) LEG

RIGID (REAR) CASTER

MANUAL PULL STATION

FUSIBLE LINKS

LOWER REAR ACCESS
PANEL

DISCHARGE NOZZLE

GREASE BAFFLE

PRE-FILTER ASSEMBLY

HEPA/CHARCOAL FILTER
PACK

GREASE CUP

GREASE TROUGH

VENTILATOR EXHAUST
DUCT

STATUS INDICATOR

POWER CORD

FUSES

POWER CONTACTOR

BUILDING FIRE ALARM
RELAY

GROUND LUG

INTERLOCK TERMINAL

FILTER INTERLOCK
SWITCHES

VENTILATOR FAN

SIDE SPACERS

COOLING FAN

COMMENT

Gives Manufacturer, Model and Serial Number information.
Also lists electrical specifications.

Container for Ansulex™ Low-pH liquid fire suppression liquid.

Allows the unit to be leveled.

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

Provides a means of manual activation of the fire suppression system.
PULL ONLY IN CASE OF FIRE!

Automatically activates fire suppression system in the event of fire on
the cooktop.

Allows access to Ansul® fire suppression agent tank (a6) and controls
also access to main power contactor (41).

Fire suppression media discharges here (2 places).

Extracts and drains most grease and moisture from the air flow.

Comprises the PRE-FILTER FRAME and a replaceable
PRE-FILTER. 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.

Collects grease/moisture drained from grease trough (23).

Directs grease/moisture removed by grease baffle to grease cup.

Exit point for ventilator airflow - on top left rear of unit.

DO NOT BLOCK

Displays status of fire suppression system (COCKED - FIRED) If
FIRED, a buzzer will sound continuously.

6’ cord and cap. Plug for NEMA 15-60R (receptacle by user).

Provide over-current protection of cooking appliance.

Energizes cooktop only while ventilator section is sensed as
operational.

Reports fire alarm condition to building fire management system.

Ground wire of power cord connects here.

Provides connection for shut-down control by building fire
management system.

Proper installation of grease baffle and filter pack close these switches
in ventilator sensor circuit. Provides air movement for ventilation.

Provides air movement for ventilation.

Maintain required 6: spacing from combustible surfaces.

Provides cooling for cooktop controls.

3

FEATURES & OPERATING CONTROLS (continued)

V1

V2 V3 V4 V5 V6

Fig. 2 Ventilator Section Controls & Indicator Lights

Fig. 3 Cooktop Section Controls & Indicator Lights

Fig. 4 Convection Oven Operating Features & Controls

4

FEATURES & OPERATING CONTROLS (continued)

ITEM

VENTILATOR SECTION CONTROLS

V1

V2

V3

V4*

V5*

V6*

* See PRECAUTIONS & GENERAL INFORMATION, pages 6 & 7 for special procedures regarding
prefilters and filter packs.

COOKTOP SECTION CONTROLS

H.01

H.02

H.03

CONVECTION OVEN SECTION CONTROLS

C.01

C.02

C.03

C.04

C.05

C.06

C.07

C.08

C.09

C.10

C.11

DESCRIPTION

POWER SWITCH

POWER ON INDICATOR

CHECK FILTERS ALARM
INDICATOR

REPLACE PREFILTER

ALARM INDICATOR

REPLACE FILTER PACK
ALARM INDICATOR

SERVICE REQUIRED ALARM
INDICATOR

POWER ON INDICATOR

HOTPLATE CONTROL

HOT SURFACE INDICATOR

POWER-OFF-FAN SWITCH

FAN LOW-OFF-HIGH SWITCH

OVEN POWER INDICATOR

HEAT INDICATOR

DIGITAL DISPLAY

OVEN TIME CONTROL

OVEN TEMP CONTROL

START TIMER KEY

ACTUAL TEMP KEY

PGM KEYS

CANCEL KEY

COMMENT

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

GREEN. Glows when POWER switch is ON.

AMBER. Glows if one or more filters are out of position. Check all
filters and baffles 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 sufficient air flow.
Filter MUST be replaced. Appliance is SHUT DOWN until expended
filters are replaced.

AMBER. Glows when associated temperature control is turned ON.

Infinite switch control of temperature of one hotplate section.

RED. Glows any time surface is above 150ºF

Switch to turn oven ON, OFF, or select FAN only.

Switch to turn fan ON, and to select fan speed.

AMBER. Glows when oven is turned ON.

AMBER. Glows when heating elements are energized.

Displays time and temperature information.
A. Time remaining in program (minute : second)
B. Programmed temperature (ºF)

Adjust programmed cooking time.

Adjust programmed cooking temperature.

Begin a timed cook cycle.

Press to display current oven temperature.

Press to select pre-programmed time/temperature.

Press to cancel a program in progress.

HOTPLATE CONVECTION OVEN

5

PRECAUTIONS AND GENERAL INFORMATION

WARNING:

Electric
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

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.

ELECTRIC SHOCK HAZARD

DO NOT SPRAY WATER ON OR AROUND

DO NOT WASH FLOOR NEAR ELECTRICAL

Damage

DANGER

ELECTRICAL EQUIPMENT

EQUIPMENT WITH WATER SPRAY

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 fire 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
No other use is
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-filter or filter 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 qualified technical personnel.

Any procedure which requires the use of tools must be performed by a
qualified 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.

recommended or authorized by the manufacturer or its

to prepare food for human consumption.

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 airflow 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.

Loss of airflow through the old filter pack will soon cause a system
shut-down when the airflow falls below minimum vapor capture levels.

KEEP A SPARE FILTER PACK ON HAND.

IMPORTANT: If you decide to “get the most” out of the old filter pack,
and continue to use it until a system shut-down happens, it is advisable
to have a fresh filter 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-filter and/or filter pack
(i.e. red SERVICE REQUIRED light is on), when the user fails to
have the proper replacement pre-filter and/or filter 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 certified applications.

Fig. 5 Ventilator
Warning
Indicators

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.

7

STD 4

E146882

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

Installation procedures must
be performed by a qualified
technician with full knowledge
of all applicable electrical
codes. Failure can result in
personal injury and property
damage.

personal injury

WARNING:
Fire Hazard

Avoid storing flammable or
combustible materials near
the appliance.

UNPACKING & INSPECTION

Carefully remove the appliance from the carton. Remove all
protective plastic film, 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 firm 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”) (floor 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 final position. Using a spirit level, verify
that the unit is level front-to-back and side-to-side.

8

INSTALLATION (continued)

SERVICE TECHNICIAN INSTALLATION NOTES

An Ansul® technician must charge and arm the fire 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
SPECIFIC 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 specifications, and available electrical service
amperage must meet or exceed the specifications 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 specifications 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 field 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.

IMPORTANT!

Verify that this VENTILATOR
and food cooking equipment
installation is in compliance
with the specifications 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

ELECTRIC CONNECTIONS
MUST BE MADE BY A
LICENSED ELECTRICIAN
Electrical shock will cause
death or serious injury.

HAZARD

CAUTION:

Electrical 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