Wells WVOC-2HFG Installation Manual

WELLS BLOOMFIELD, LLC

2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439

telephone: 775-689-5707

fax: 775-689-5976

www .wellsbloomfield.com

SUPPLEMENTAL

SERVICE

INSTRUCTIONS

WVOC-2HFG

and

WVOC-2HSG

505

COMBINATION

COOK CENTER

with

VENTLESS

HOOD

SYSTEM

IMPORT ANT: WELLS BLOOMFIELD, LLC PROPRIETARY INFORMATION.

DISSEMINATION OF THIS INFORMATION TO ANYONE OTHER THAN

WELLS AUTHORIZED SERVICE AGENTS IS STRICTLY PROHIBITED.

TECHNICAL CONTENT OF THIS MANUAL IS DESIGNED FOR

USE BY QUALIFIED PROFESSI O NAL TECHNICIANS ONLY.

PRINT ED IN UNIT ED STATES OF AMERICA

p/n SV505 Rev.(-) S505 080519 cps

PRECAUTIONS AND GENERAL INFORMATION

GENERAL

WARNING:

RISK OF INJURY

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

property damage

WARNING:

ELECTRIC

All servicing requiring access to non-insulated electrical components must be performed by a qualified technician. Some procedures involve exposed live circuits. Use all due caution to avoid contact with live electric circuits. Failure to follow this warning can result in severe electrical shock.

SHOCK HAZARD

WARNING

SLIP / FALL HAZARD

SPILLED OIL

DO NOT OPERATE UNLESS THE GREASE CUP AND TROUGH ARE INSTALLED. Oil and moisture will drip onto

This appliance is intended for use in commercial establishments only.

This appliance is intended No other use is agents.

recommended or authorized by the manufacturer or its

to prepare food for human consumption.

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 controls, control panel or wiring. Do not use water spray or steam jet to clean this appliance. This appliance is not jet stream approved.

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. All service to the fire suppression system must be performed by an authorized Ansul® agency.

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

IMPORTANT INSTALLATION NOTE:

6” clearance is required from back and sides of the appliance to any combustible or non-combustible surface.

This installation requires a minimum ceiling height of 96" in order to maintain adequate airflow.

SV505 SvcManual WVOC-2HG

the floor and falls may result. Death or serious injury may result from slipping and falling

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

TABLE OF CONTENTS

GENERAL Precautions & General Information …………….………… xi

Specifications ..……………………………...................….. 1

Features & Operating Controls ……………………………. 2 VENTILATOR HOOD SECTION

Filter Arrangement .......................................................... 6

Service Indicator Lights .…….......................................… 7

Operational Notes ........................................................... 8

Filter System ................................................................... 10

Vacuum System .............................................................. 11

Ansul® System ............................................................... 12

Troubleshooting Suggestions ……………………………… 14 CONVECTION OVEN SECTION

Operation ........................................................................ 16

Servicing Instructions ...................................................... 18

Troubleshooting Suggestions .......................................... 24

GRIDDLE SECTION

Operation Notes ............................................................. 26

Servicing Instructions ...................................................... 27

Troubleshooting Suggestions .......................................... 29

HOTPLATE SECTION

Servicing Instructions ...................................................... 30

Troubleshooting Suggestions .......................................... 31

EXPLODED VIEWS AND PARTS LISTS

Hood Section .................................................................... 32

Ansul® Components ....................................................... 34

Convection Oven Section ................................................ 35

Cooktop Section .............................................................. 37

WIRING DIAGRAMS & SCHEMATICS ................................. 38

OTHER DOCUMENTS

Material Safety Data Sheet—Ansulex Low pH ................. 44

Maintenance Logs ............................................................ 46

GENERAL

SPECIFICATIONS

AMPS 3ø

AMPS 1ø

L1 L2 L3

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MODEL VOLTS WATTS

208 12,300 36.7 35.0 30.7 59.0

WVOC-2HFG

240 16,300 42.3 40.3 35.4 68.0 208 13,200 39.0 37.4 33.1 63.3

WVOC-2HSG

240 17,600 35.8 44.3 47.3 73.1

INTRODUCTION

This manual contains information needed to properly service and repair Wells Bloomfield combination cook center with ventless hood system. This manual applies to the following Wells Manufacturing models:

WVOC-2HFG WVOC-2HSG

For installation, operation and maintenance instructions, refer to Operation Manual p/n 304963.

FEATURES & OPERATING CONTROLS

COCKED

FIRED

PULL

HANDLE

TOACTIVATE

FIRE

SUPPRESSION SYSTEM

INCASE OF

FIRE

VENTILATOR POWER

CHECKFILTERS

REPLACE PREFILTER

REPLACE FILTERPACK

SERVICE REQUIRED

VCS 2000

VENTLESSCOOKINGSYSTEM

GENERAL

VENTILATOR CONTROL PANEL see pages4&5

VENTILATOR POWERON

REPLACE FILTERPACK

VCS 2000

a11

a15

a10

ANSUL

a11

5858

a31

COOKING CONTROLS see pages4&5

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Fig. 1 Ventilator Section Operating Features & Controls

VENTILATOR SECTION

FEATURES & OPERATING CONTROLS (continued)

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ITEM

a6.

a10.

a11.

12.

a15.

16.

18.

19.

22.

23.

28.

a31.

38.

40.

41.

42.

43.

44.

53.

56.

57.

58.

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 HOOD SIDE SHIELD SIDE SPACERS

COMMENT

Gives manufacturer, make and model description. Also lists voltage and amperage data.

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. Energizes cooking appliances 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. Required on left and right sides of hood. Factory installed. Required to maintain 6" spacing from combustibles. Field installed.

GENERAL

FEATURES & OPERATING CONTROLS (continued)

GENERAL

V2 V3 V4 V5 V6

Fig. 2 Ventilator Section Controls & Indicator Lights

Fig. 3 Cooking Section

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Fig. 4 Control Panel

FEATURES & OPERATING CONTROLS (continued)

ITEM

DESCRIPTION

COMMENT

VENTILATOR SECTION INDICATORS & CONTROLS

V2 V3

V4*

V5*

V6*

POWER SWITCH

POWER ON INDICATOR CHECK FILTERS ALARM IN-

DICATOR

REPLACE PREFILTER

ALARM INDICATOR REPLACE FILTER PACK

ALARM INDICATOR SERVICE REQUIRED ALARM

INDICATOR

* See PRECAUTIONS & GENERAL INFORMATION, page 8 for special procedures regarding prefilters and filter packs.

Energizes blower motor. If, after 10 seconds, proper conditions are met, cooking appliances are 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.

COOKING APPLIANCE CONTROLS

G.01

G.02

GRIDDLE TEMPERATURE CONTROL

GRIDDLE HEAT INDICATOR

Thermostat control of griddle temperature

Glows when heating elements are energized.

GENERAL

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H.01

H.02 H.03

H.04

C.01 C.02 C.03 C.04 C.05

C.06 C.07 C.08 C.09 C.10 C.11

FRONT HOTPLATE TEMPERATURE CONTROL

HOTPLATE "ON" INDICATOR REAR HOTPLATE

TEMPERATURE CONTROL HOTPLATE "ON" 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

Infinite switch control of temperature of front hotplate.

AMBER. Glows when front hotplate control is turned ON. Infinite switch control of temperature of front hotplate.

AMBER. Glows when rear hotplate control is turned ON.

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.

HOOD OPERATION - FILTER ARRANGEMENT

VENTILATOR HOOD

FAN FILTER PACK

POSITION SWITCH

FILTER PACK SEAL

FILTER PACK

FILTER PACK HOLD ER CLIP

GREASE BAFFLE

AIR FLOW

POSITION SWITCH

HOLDER CLIP

CLIPS ONTO

LEDGE

WALL OF UNIT

PRE-FILTER ASSEMBLY

GREASE BAFFLE

GREASE TROUGH

PRE-FILTER NOTE : AIR FLOW AR ROW POINTS AWAY FROM IN STAL LER WH EN PROPERLY INSTALLED

FILTER HOOK

FILTER

PRE-FILTER

HOOK

FILTER RAIL

FILTER HANDLE

FILTER FRAME

NOTE: P RE-FILTER IS SENSED AS BEI NG IN POS ITI ON BY T H E PRESSUR E D R OP AC RO SS IT.

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HOOD OPERATION - SERVICE INDICATOR LIGHTS

Energizes the ventilator section. When all three

POWER SWITCH

filters are sensed as being in their proper position, and sufficient airflow is proven, the cooking appliance contactor is energized.

INDICATOR LIGHT (GREEN) VENTILATOR POWER ON

When lit, indicates that electrical power is available, and that the power switch (V.01) is turned ON.

VENTILATOR HOOD

When lit, indicates that the BAFFLE, PRE-FILTER

INDICATOR LIGHT (AMBER) CHECK FILTERS (POSITION)

and/or FILTER PACK is not in its proper position, or that an interlock switch is out of adjustment. Controlled by: Plunger switches position monitors for Filter Pack and Grease Baffle; and, vacuum switch S3 for Pre-Filter.

When lit, indicates that the pre-filter is approaching INDICATOR LIGHT (AMBER) REPLACE PREFILTER

the end of its service life.

ALWAYS HAVE A SPARE PRE-FILTER ON

HAND FOR QUICK REPLACEMENT.

Controlled by vacuum switch S1.

INDICATOR LIGHT (AMBER) REPLACE FILTER PACK

When lit, indicates that the filter pack is approaching

the end of its service life.

REPLACE FILTER PACK PROMPTLY!

Controlled by vacuum switch S2.

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Indicates that either the pre-filter or the filter pack is

individually clogged (the individual indicator light

may be lit), or that the the airflow drop across both

filters is critical. As a cost saving measure, always INDICATOR LIGHT

(RED) SERVICE

REQUIRED

change a dirty pre-filter first (when lights V.04 &

V.05 are not lit, and red light V.06 is on).

Note: Power to the cooking appliance will be

de-energized whenever this RED “SERVICE

REQUIRED” indicator light is lit. When lit, the air

flow is insufficient to meet appliance vapor capture

levels requirements.

Controlled by vacuum switch S4.

HOOD OPERATION - OPERATIONAL NOTES

WARNING:

FIRE AND HEALTH

DO NOT bypass or attempt to bypass the filter placement interlocks. Operating the

VENTILATOR HOOD

appliance without filters properly in place will compromise the fire protection and air filtration capabilities of this unit. Serious personal injury and/or substantial property damage may result.

NOTICE:

Operating without all filters properly in place, and/or operating with filter placement interlocks defeated will void the manufacturer’s warranty.

IMPORTANT: NEVER wash the PREFILTER or FILTER PACK.This will shut down the cooking appliance. (Red “SERVICE REQUIRED” light will turn ON).

HAZARDS

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 SPARE FILTER PACKS 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.

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HOOD SECTION - OPERATIONAL NOTES (continued)

FOR VERTICAL

MOUNTING

THIS

SIDE UP

FIRE DAMPER

DAMPER SUPPORT

AIR FLOW

¬ ®

FUSIBLE LINK 280ºF

ACCESS DOOR

THIS SIDE

THIS SIDE UP FOR HORIZONTAL MOUNTING

LABEL

SHUTTER

VENTILATOR HOOD

FIRE DAMPER INSTRUCTIONS

1. The FIRE DAMPER is accessible by removing the TOP PANEL The FIRE DAMPER sets in the DAMPER SUPPORT and may be removed by lifting straight up.

2. The FIRE DAMPER normally needs no maintenance. If it becomes heavily contaminated with dust and/or grease, it must be replaced.

3. If the FIRE DAMPER malfunctions or if the fusible link releases, the manufacturer recommends that the entire FIRE DAMPER ASSEMBLY be replaced.

4. Reinstall the FIRE DAMPER with the “THIS SIDE UP FOR HORIZONTAL MOUNTING” arrow pointing away from the BLOWER.

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IMPORTANT:

Replace the entire fire damper assembly if the link trips, or if the damper mechanism becomes heavily contaminated with dust and/or grease.

While the fusible link alone may be replaced, once the damper has tripped it may no longer function reliably.

Contact factory for pricing and availability.

FILTER SYSTEM

VENTILATOR HOOD

HOOD ASSEMBLY

(LOOKING UP)

FILTER PACK POSITION MONITOR

GREASE BAFFLE POSITION MONITOR

NOTE AIR FLOW ARROWS ON GREASE BAFFLE, PRE-FILTER AND FILTER PACK. INSTALL THESE COMPONENTS SUCH THAT ARROWS POINT TOWARD FAN

NOTE:

Change the pre-filter as soon as the "REPLACE PRE-FILTER" indicator glows in order to extend the service life of the filter pack.

NOTE:

The charcoal portion of the filter pack is an aid in controlling cooking odors only. It will not completely eliminate such odors.

PRE-FILTER ASSEMBLY

FILTER PACK

GREASE BAFFLE

1. The GREASE BAFFLE separates grease particles and water vapor from the air stream by the centrifugal force of the air moving through its inter-leaved baffle plates. Ejecta is collected in the GREASE CUP through drain holes in the baffle frame and cabinet. The GREASE BAFFLE POSITION MONITOR plunger switch controls electric power to the ventilator fan.

2. The PRE-FILTER is composed of a replaceable media filter and a filter-retaining gage. The pre-filter captures the bulk of grease vapors. Pre-filter position is monitored by a vacuum switch, which is in the control circuit of the cooking appliance contactor.

3. The FILTER PACK is composed of a high-efficiency filter to capture grease vapors down to a very small particle size; and, an activated charcoal filter to help control cooking odors. The FILTER PACK POSITION MONITOR plunger switch is in the control circuit of the cooking appliance contactor.

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FAN

PORT A

VACUUM SYSTEM

VS4

PORT C

VS1

PORT C

VS2

VS3

SWITCH FUNCTION

VS1 PRE-FILTER POSITION MONITOR Unit will not function unless a pre-filter is properly installed, as sensed by the pressure drop across it. Pressure drop across the pre-filter must exceed setting before cooking appliance is energized. Insufficient pressure drop will illuminate "CHECK FILTER" indicator.

VS2 FILTER PACK ALERT Will illuminate "REPLACE FILTER PACK" indicator if pressure drop across the filter pack exceeds setting.

VS3 PRE-FILTER ALERT Will illuminate "REPLACE PRE-FILTER" indicator if pressure drop across the pre filter exceeds setting.

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VS4 AIR FLOW MONITOR Pressure drop must exceed setting before cooking appliance is energized. As filters become plugged, airflow decreases. Beyond the useful life of the filters, air flow will be insufficient to maintain the required pressure drop, which will shut-down ventilator fan and cooking appliance and illuminate "SERVICE REQUIRED" indicator.

PORT A

PORT B

FAN

PLENUM PORT

(AFTER FILTER PACK)

CABINET PORT (BEFORE FILTER PACK)

AMBIENT

PRESSURE

GREASE

BAFFLE

SWITCH

VS1

PRESSURE

DROP ACROSS

BAFFLE

PRE-

FILTER

SWITCH

VS3

PRESSURE

DROP ACROSS

PRE-FILTER

FILTER

PACK

SWITCH

VS2

PRESSURE

DROP ACROSS

FILTER PACK

SWITCH

FAN

VS4

PRESSURE

RISE FROM

FAN

AIR FLOW

IMPORTANT:

Vacuum switch settings are factory set, and are not adjustable.

VENTILATOR HOOD

ANSUL® FIRE DETECTION SYSTEM

VENTILATOR HOOD

DETECT OR IN PLENUM

MANUAL

PULL STATION

212ºF

HOOD ASSEMBLY

VIEWED FROM REAR

SERIES

DETECTOR

FUSE LINK

212ºF

PULLEY

ELBOW

IMPORTANT:

All servicing of the fire detection system to be performed by an authorized Ansul® agent only.

CABLE SITS IN

GROOVE IN

PULLEY

MICROSWITCH

1. Cooking appliance protected by a series detector with a 212ºF fusible link. The plenum is further protected by two 212ºF fusible links at the inlet of the ventilator fan.

2. Fire suppression system may be activated by the manual pull station on the front of the unit, or by a remote manual pull station if installed.

3. A microswitch in the Ansul® Automan assembly allows connection to a building fire alarm system.

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HOO D AS SEMBLY

V IEWED FROM REAR

FLEX

HOSE

ANSUL® FIRE SUPPRESSION SYSTEM

UNDER-HOOD

MANIFOLD

NOZZ LE 290

AP PLY SEA LA NT TAPE

PLENUM

NOZZLE AS SY

NOZZ LE 1W

VENTILATOR HOOD

SEAL WITH

FIBER WASHER IS ALWAYS ON THE INSIDE

CABINET WALL

TYPICAL BULKHEAD

TEFLON TA PE

SEAL WITH TEFLON TA PE

FITTING

FIRE SUPPRESSION

MEDIA T A NK

PRESSURE

CARTRIDGE

1. Actuation of the Ansul® system will cause the pressure cartridge seal to be punctured, which will pressurize the 1.5 gallon media tank. Fire suppression media will be forced through the piping where it will spray from the various nozzles.

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2. The cooking appliance surface is protected by two type 290 nozzl es.

3. The plenum area between the filters and the fan is protected by a single type 1W nozzle.

4. The pressure integrity of the plenum bulkheads is maintained by the use of compression fittings at the piping penetrations.

5. Nozzles are protected from grease contamination by press-on silicone rubber caps.

IMPORTANT:

All servicing of the fire suppression system to be performed by an authorized Ansul® agent only.

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