Wells Manufacturing WVG-136 Service Instructions

WELLS BLOOMFIELD, LLC

2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439 telephone: 775-689-5707 fax: 775-689-5976 www.wellsbloomfield.com

502

SUPPLEMENTAL

SERVICE

INSTRUCTIONS

WVG-136

WVG-136RW

and

WVG-136RWT

ELECTRIC

GRIDDLE with

VENTLESS

HOOD

SYSTEM

IMPORTANT: 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 PROFESSIONAL TECHNICIANS ONLY.

PRINTED IN UNITED STATES OF AMERICA p/n

SV502

Rev.(-)

08

0516 cps

PRECAUTIONS AND GENERAL INFORMATION

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

SHOCK HAZARD

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.

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 .

CAUTION:

RISK OF

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 controls, control panel or wiring.

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. xi

TABLE OF CONTENTS

GENERAL

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

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

Features & Operating Controls ……………………………. 2

VENTILATOR HOOD SECTION

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

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

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

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

Troubleshooting Suggestions ……………………………… 14

GRIDDLE SECTION

Operational Notes .............................................................. 16

Element Clamping Diagram .............................................. 19

Troubleshooting Suggestions ........................................... 19

DRAWER WARMER SECTION

Operational Notes .............................................................. 20

RWT-Style Controller ........................................................ 21

Troubleshooting Suggestions ........................................... 22

EXPLODED VIEWS AND PARTS LISTS

Ansul® Components ......................................................... 23

Hood Section .................................................................... 24

Griddle Section ................................................................ 26

Drawer Warmer Section ................................................... 28

WIRING SCHEMATICS & DIAGRAMS ................................. 30

OTHER DOCUMENTS

Material Safety Data Sheet—Ansulex Low pH ................. 36

Maintenance Logs ............................................................ 38

MODEL

WVG-136

WVG-136RW

WVG-136RWT

DRAWER

WARMER

NO

YES

SPECIFICATIONS

VOLTS

60Hz

3ø AMPS

1ø

L1 L2 L3

AMPS

WATTS DIMENSIONS

208V 17 29 17 35

240V 20 33 20 40

7300

30-3/8" Wide

9500 (42-3/8" incl. spacers)

208V 20 28 20 38

35-1/2" Deep

240V 24 33 24 43 10400

INTRODUCTION

This manual contains information needed to properly service and repair Wells Bloomfield free-standing electric griddle with ventless hood system.

This manual applies to the following Wells Manufacturing models:

WVG-136

WVG-136RW

WVG-136RWT

For installation, operation and maintenance instructions, refer to Operation Manual p/n 304986.

1

FEATURES & OPERATING CONTROLS

28

VENTILATOR CONTROL PANEL see pages 4 & 5 a15

28

56

18

53

19

16 a11

23

1

18 16

23

GRIDDLE CONTROL PANEL see pages 4 & 5

22 a10

ANS UL

®

HANDLE

TO ACTIVATE

FIRE SUPPRESSION

SYST EM

8

WARMER CONTROLS see pages 4 & 5

Fig. 1 Ventilator Section Operating Features & Controls

9

38

12 a6

40

41

44 a31

43 42

38

28

2

FEATURES & OPERATING CONTROLS (continued)

VENTILATOR SECTION

42.

43.

44.

53.

56.

22.

23.

28. a31.

38.

40.

41.

ITEM

1.

a6.

8.

9. a10. a11.

12. a15.

16.

18.

19.

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

WARMER RELAY

POWER CONTACTOR

BUILDING FIRE ALARM

RELAY

GROUND LUG

INTERLOCK TERMINAL

FILTER INTERLOCK

SWITCHES

VENTILATOR FAN

COMMENT

Lists 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 griddle.

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).

Provides power to roll warmer section. Energized at all times except during fire safety shut-down.

Energizes griddle 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.

3


V.01

V.02

V.03

V.04

Fig. 2 Ventilator Section Controls & Indicator Lights

HUMITROL

RACK

GRI DDLE

SURFACE

GREASE

TROUG H

V.05

DRAWER

INSE RT

PAN

GREASE

DRAWER

G.02

W.03

W.02

RW-STYLE

W.01

W.04

OPTIO NAL ROLL WARMER

W.06

RWT-STYLE

W.05

Fig. 3 Griddle & Warmer Drawer Operating Features & Controls

V.06

G.01

GRI DDLE

4


ITEM DESCRIPTION COMMENT

VENTILATOR SECTION CONTROLS

V.01

V.02

V.03

V.04*

V.05*

V.06*

POWER SWITCH

POWER ON INDICATOR

CHECK FILTERS ALARM

INDICATOR

REPLACE PREFILTER

ALARM INDICATOR

REPLACE FILTER PACK

ALARM INDICATOR

SERVICE REQUIRED

ALARM INDICATOR

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

prefilters and filter packs.

GRIDDLE SECTION CONTROLS

G.01

G.02

GRIDDLE TEMPERATURE

CONTROL

INDICATOR LIGHT

Thermostat control of temperature of one griddle half.

AMBER. Glows when heating element is energized.

OPTIONAL WARMER SECTION CONTROLS

RW-STYLE

W.01

W.02

W.03

W.04

RWT-STYLE

WARMER TEMPERATURE

CONTROL

POWER ON INDICATOR

THERMOMETER

(OPTIONAL )

HUMIDITY CONTROL

W.05

W.06

CONTROL MODULE

WARMER POWER

SWITCH

Infinite switch control of one warmer drawer.

AMBER. Glows when associated control is turned ON .

Shows temperature in warmer drawer. Must be ordered at time of initial equipment build.

Slide control of shutters to control air circulation within the warmer drawer.

Adjust setpoint, view setpoint and actual temperatures.

Energize individual drawer warmer.

5

HOOD SECTION - OPERATIONAL NOTES

FAN

FILTER PA CK

PO SITIO N

SWITCH

FILTER PA CK

SE AL

FILTER PA CK

HOL DE R CLIP

GRE ASE B AFFLE

PO SITIO N

SWITCH

PRE -FILTER

AS SEMB LY

GRE ASE

BA FFL E

GRE ASE

TROUGH

FILTER PACK

H OLDER CLIP

CLIPS ONTO

LEDGE

PRE -FILTER

NOTE: AIR FL OW A RRO W

PO INTS AWAY FROM

INSTAL LER WHEN

PRO PERLY INSTA LLE D

FILTER HOOK

PR

E-

FI

LT

ER

FILTER

HOOK

FILTER

RAIL

FILTER

HANDLE

FILTER

FRAME

NOTE: P RE-FILTER IS S ENSE D

AS B EING IN POS ITION BY THE

PRE SSURE DROP A CRO SS IT.

6

HOOD SECTION - OPERATIONAL NOTES (continued)

POWER SWITCH

Energizes the ventilator section. When all three 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.

INDICATOR LIGHT

(AMBER) CHECK

FILTERS (POSITION)

When lit, indicates that the BAFFLE, PRE-FILTER 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.

INDICATOR LIGHT

(AMBER) REPLACE

PREFILTER

When lit, indicates that the pre-filter is approaching 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!


INDICATOR LIGHT

(RED) SERVICE

REQUIRED

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

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.


7


WARNING:

FIRE AND HEALTH

HAZARDS

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

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.

8


ACCESS DOOR

THIS SIDE

THIS SIDE UP

FOR HORIZONTAL

MOUNTING

FIRE

DAMPER

DAMPER

SUPPORT

SHUTTER

LABEL

FUSIBLE LINK

280ºF

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

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

ASSEMBLY replaced.

4. Reinstall the FIRE DAMPER with the “THIS SIDE UP FOR

HORIZONTAL MOUNTING” arrow pointing away from the

BLOWER.

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.

9

HOOD SECTION - FILTER SYSTEM

HOOD ASSEMBLY

(LOOKING UP)

FILTER PACK

POSITION MONITOR

NOTE AIR FLOW ARROWS ON

GREASE BAFFLE, PRE-FILTER

AND FILTER PACK. INSTALL

THESE COMPONENTS SUCH

THAT ARROWS POINT

TOWARD FAN

GREASE BAFFLE

POSITION MONITOR

PRE-FILTER

ASSEMBLY

FILTER

PACK

GREASE

BAFFLE

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.

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.

10

HOOD SECTION - VACUUM SYSTEM

VS1

PORT C

PORT C

VS4

PORT A

PORT B

PORT C

PORT B

FAN

PORT A

VS2

VS3

CABINET PORT

(BEFORE FILTER PACK)

FAN

PLENUM PORT

(AFTER FILTER PACK)

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 indicator if pressure drop across the filter

GREASE

BAFFLE

PRE-

FILTER

FILTER

PACK

FAN AIR FLOW

SWITCH

VS1

SWITCH

VS2

SWITCH

VS4

SWITCH

VS3

IMPORTANT:

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

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 ventilator fan and cooking appliance and

indicator.

11

HOOD SECTION - ANSUL® FIRE DETECTION SYSTEM

HOOD ASS EMBLY

VIEWED F ROM REAR

SER IES

DET EC TOR

F USE LINK

212 ºF

F USE LINK

212 ºF

BLIND

HOLE

I N

C A

F IR SE

E

O

F

ANSU

L

H

P

A

U L

N

L

D L

E

THREADED

THRU HOLE

MANUAL

PU LL STATION

CABLE SIT S IN

GROOVE IN

PULLEY

PULLEY

ELBOW

MICR OSWIT CH

IMPORTANT:

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

1. Cooking appliance protected by two series detectors with 212ºF

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.

12

HOOD SECTION - ANSUL® FIRE SUPPRESSION SYSTEM

HOOD ASSEMBLY

VIEWED F ROM REAR

F LEX

HOSE

PLENUM

NOZZ LE A SSY

NOZZLE 1W

APPLY SEALANT TAPE

UNDER-HOO D

MANIFOLD

NOZZLE 290

APPLY SEALANT TAPE

SEAL WITH

TEFLON TAPE

INS

IDE

OUT

SID

E

FIBER

WASHER

IS ALWAYS

ON THE I NSI DE

CABI NET WALL

SEAL WITH

TEFLON TAPE

TYPICAL BULKHEAD

FITTI NG

F IRE SUPPRESSION

MEDIA TANK

PRESSURE

CARTRI DGE

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.

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

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

IMPORTANT:

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

13

HOOD SECTION - TROUBLESHOOTING SUGGESTIONS

SYMPTOM

Entire unit inoperative

No lights glow

No buzzer sounds

POSSIBLE CAUSE

Unit unplugged.

Circuit breaker off or tripped

Damaged power cord

SUGGESTED REMEDY

Plug power cord into receptacle

Reset circuit breaker

Replace power cord

Damaged power switch

External interlock jumper loose or damaged (unit is not connected to building fire control system)

Check switch. Replace as req’d.

Check jumper. Repair or replace as required

External interlock open (unit connected to building fire control system)

Locate and rectify open circuit condition in building fire control system.

Cooking appliance inoperative

“POWER” light on hood ON. Vent fan working ok with no service

Contactor, wiring or connectors damaged

Replace contactor

Repair wiring

Vacuum line to switch VS4 restricted

Check for restriction in vacuum line to switch.

Vacuum switch VS4 open or defective

Cooking appliance inoperative

“POWER” light on hood ON.

Vent fan working OK.

"SERVICE REQUIRED" light ON

Vacuum pickup port in plenum, or vacuum port on blower plugged

Fire damper tripped

Check vacuum switch VS4.

Replace as req’d.

Clean vacuum ports

NOTE: Vacuum port in plenum may appear as a place to attach a nozzle. Do not attach a nozzle here. It will block the vacuum signal (see pg 11).

Replace fire damper

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

Grease baffle and/or filter pack position switch(es) open

Missing or un-seated filter assy.

Reseat filter or adjust interlock switch.

Vent fan working OK, but amber

“CHECK FILTERS” light stays ON

Vacuum switch VS1 open or damaged

Be sure pre-filter is hooked in position. Check for damaged vacuum line, or one that is disconnected at the vacuum switch or pick-up port. Also check port for grease contamination.

14

HOOD SECTION - TROUBLESHOOTING SUGGESTIONS (continued)

SYMPTOM POSSIBLE CAUSE

Vent fan working OK, but amber

Prefilter is at end of service life

“REPLACE PREFILTER” light ON.

Vacuum Switch VS3 damaged

“REPLACE PREFILTER” light turns on some of the time.

Pre-filter frame not hooked in position at top

Pre-filter position switch SW1 misadjusted or damaged.


Replace prefilter

Replace vacuum switch VS3

Hook metal pre-filterframe at top to prevent air blowing around filter

Check switch SW1, adjust or replace

Prefilter is nearing end of service life

Filter pack nearing end of its service life

Replace prefilter

Replace filter pack

“REPLACE FILTER PACK” light

ON.

Filter pack vacuum switch VS2 lines restricted or switch damaged.

Check switch VS2, repair vacuum lines or replace switch.

Appliance newly installed and

Ansul® system not yet charged.

Check status of Ansul® system at rear of unit, if fired, call Ansul®

Service Distributor for set-up.

Vent fan not operating and buzzer is sounding.

Ansul® system has been set off by overtemp condition, or manual pull station has been activated.

Check status of Ansul® system at rear of unit, if fired, call Ansul®

Service Distributor for replacement of fire suppression agent and propellant. If fuse link has been activated, it must be replaced prior to re-cocking the

Ansul® system.

Vent fan not operating.

Buzzer silent.

Green “POWER” light ON.

Amber “CHECK FILTER” light and red “SERVICE REQUIRED” light

ON.

Grease baffle not installed misadjusted or damaged.

Install grease baffle. replace

15

GRIDDLE UNIT - OPERATIONAL NOTES

REMOVABLE SPLASH GUARD

G-136 GRIDDLE UNIT

THERMOSTAT (typical)

CONTROL

PANEL

CONTROL

KNOB

(typical)

GREASE

DRAWER

IN CASE

FIRE OF

ANSUL

CAUTION:

BURN HAZARD

Griddle surfaces are very hot during operation. Allow unit to cool before performing any service.

1. The main cooking appliance is a Wells G-136 Griddle.

2. The griddle has two individually controllable sections. Control is via capillary and bulb thermostat with DPST switch.

3. Each section is heated by two identical elements, wired in

parallel.

4. Griddle is powered by the cooking appliance contactor.

IMPORTANT:

The griddle surface must be seasoned prior to use, and after each cleaning. Refer to Operation Manual for WVG-136 p/n 304986.

16

GRIDDLE UNIT - SERVICING INSTRUCTIONS

REPLACE THERMOSTAT

1. Disconnect unit from electric power and allow to cool before

servicing.

2. Withdraw grease tray from unit. Empty grease into an appropriate

container.

3. Remove six screws from recessed lip of control panel. Remove control panel from unit.

4. Remove griddle control knob by pulling straight off.

5. Note position of wires on thermostat. Disconnect wires, then remove thermostat from control panel. Withdraw thermobulb from thermowell in griddle element assembly.

IMPORTANT: Do not damage capilary tubes.

6. Insert thermobulb of new thermostat fully into thermowell. Be careful that capillary tube is not damaged.

7. Verify that fishpaper insulator is properly in place, then attach new thermostat to control panel. Reconnect wiring.

8. Reinstall control panel and grease tray.

9. Reconnect unit to electric power and test for proper operation.

REPLACE INDICATOR LIGHT

1. Remove control panel from unit as detailed above.

2. Disconnect wires from indicator. Remove indicator by collapsing retaining ears with a flat-blade screwdriver. Withdraw indicator from control panel.

3. Push new indicator into mounting hole until both retaining ears snap into place. Reconnect wires.

4. Reassemble unit. reconnect to electric power and test for proper

operation.

WARNING

HOT SURFACES

Griddle surface can be VERY

HOT and may cause severe burns on contact.

CAUTION:

SHOCK HAZARD

Disconnect electric power before servicing.

IMPORTANT:

Do not cut, pinch, twist or kink thermostat capillary tube. This will render the thermostat inoperable, and cannot be repaired.

17

GRIDDLE UNIT - SERVICING INSTRUCTIONS (continued)

WARNING

HOT SURFACES

REPLACE HEATING ELEMENT(S)

1. Disconnect unit from electric power and allow to cool before

servicing.

Griddle surface can be VERY

HOT and may cause severe burns on contact.

2. Withdraw grease tray from unit. Empty grease into an appropriate

container.

CAUTION:

3. Remove six screws from recessed lip of control panel. Remove control panel from unit (including grease tray sleeve). Withdraw

SHOCK HAZARD

thermostat bulbs from griddle plate.

Disconnect electric power before

IMPORTANT: Do not damage capilary tubes. servicing.

4. Griddle assembly is held in place by Wellslok fasteners. Twist

Wellsloks inward to release. Cut seal at top panel, then lift griddle assembly from top of unit.

BOTT

OM

OF

TOP

PANEL

5. Remove bottom panel from griddle plate assembly.

6. Note and mark position of wiring on elements. Disconnect wiring

Wellslok Fastener

NUT

LEAD

JUMPER

(WHEN USED)

NUT

ELEMENT

7. Mark insulation for orientation. Fold insulation retainers to allow insulation to be removed. Carefully lift insulation from griddle.

8. Remove element clamps as necessary. Replace element(s), then reinstall clamps (refer to Clamping Diagram on page 19). Be sure to use anti-sieze on element clamp studs.

9. Reinstall insulation. Reconnect wiring.

10. Apply fresh sealant to bottonedge of griddle assembly. Lower assembly into unit, then secure by turning out Wellsloks. Apply a thin bead of food-grade silicone completely around edge of assembly to seal it to the top panel.

11. Reinsert thermobulbs, then reinstall control panel.

12, Reconnect unit to electric power and test for proper operation.

Power Lead Connection

NOTE:

Examine connectors for condition. Replace any that are burned, distorted or excessively discolored.

IMPORTANT:

Do not cut, pinch, twist or kink thermostat capillary tube. This will render the thermostat inoperable, and cannot be repaired.

18

53474

51969

52054

51969

GRIDDLE UNIT - ELEMENT CLAMPING DIAGRAM

52054

51969

51969

52028

53474

52028

53474

52028 52028

53474 53474

51969

52054

51969

53474

51969

52054

51969

ELEMENT RETAINER STUD LOCATION 50496 HEATING ELEMENT 208/ 240V

GRIDDLE UNIT - TROUBLESHOOTING SUGGESTIONS

DESCRIPTION

Griddle will not heat

One section does not heat

Griddle drips grease

POSSIBLE PROBLEM

Hood section not "ON"

Temperature control knobs not set to desired temperature


Verify that Hood Power Switch is

"ON". If "SERVICE REQUIRED" indicator is lit, rectify filter problem.

Set to desired temperature

Damaged internal component

Grease drawer full or not installed

Damaged internal component

Check thermostats, elements, wiring and jumpers. Replace damaged components, and repair wiring and loose connections as required.

Empty grease drawer.

Clean grease build-up from sleeve and install drawer properly

Verify all seams properly sealed.

Verify grease drawer and handle properly assembled.

Replace grease tray if required

19

DRAWER WARMER UNIT - OPERATIONAL NOTES

DRAWER

STOP

OPTIONAL

HUMITRO L

RACK

PRODUCT

PAN

LATCH

ASSEMBLY

OPTI ONAL DIAL

THERMO METER

DRAWER

ASSEMBLY

THERMOSTAT

CONTRO L

KNO B

OPTI ONAL ELECTRONIC CONTROL

PO WER

SWITCH

CONTROL

MODULE

LED READOUT

"PROCESS" KEY

INCREMENT AND

DECREMENT KEYS

CONTRO L MODULE

ºF OR ºC

INDICATORS

LO AD

INDICATOR

CAUTION:

BURN HAZARD

Interior of drawer warmer cavity will be hot during operation. Allow unit to cool before performing any service.

NOTE:

In the absence of a drawer warmer appliance, the WVG-136 is equipped with a storage cabinet in the base. This single cabinet has two doors.

1. The optional drawer warmer unit is a Wells RW-26HD or

RWT-26HD two-drawer roll warmer unit.

2. The drawer warmer has two individually controllable sections. a. Control of RW-style unit is via bulb and capillary thermostat with SPST switch. b. Control of RWT-style unit is via electronic controller.

3. Each section is heated by a single element of roughly

4. Drawer warmer is powered by the drawer warmer relay

5. Optional dial thermostat may be located on either or both

6. Digital controller will replace thermometer-equipped units in new production. Thermometer-equipped units are to become

obsolete.

20

DRAWER WARMER UNIT - CONTROL MODULE for RWT- STYLE UNITS

CONTROL MODULE

ITEM DESCRIPTION

1

PROCESS Key:

Press to view actual temperature of cavity.

2

4 Character LED Display:

Normally shows SETPOINT temperature.

3

4

ºF or ºC Indicator:

Glows to indicate if unit is configured for degrees Fahrenheit or degrees Celsius.

LOAD Indicator:

Glows when heating element is energized.

5

Increment and Decrement Keys:

Press UP arrow to increase

Press DOWN arrow to decrease

SET SETPOINT TEMPERATURE

Press an arrow key:

UP arrow to increase

DOWN arrow to decrease

Release key when desired setpoint temperature is displayed.

Reading is locked into memory 3 seconds after last key stroke.

Minimum setpoint is 140ºF (60ºC)

Maximum setpoint is 250ºF (121ºC)

CHANGE DISPLAY MODE ( ºF or ºC)

Press and hold UP arrow and DOWN arrow keys for 10 seconds.

Release keys when display reads F C.

Within 3 seconds, press UP arrow or DOWN arrow key until desired indicator (ºF or ºC) glows.

The new value will lock into memory 3 seconds after last keystroke.

1

PROCESS

4

PROCESS

PROCESS

2

5

3

ºF

ºC

LOAD

ºF

ºC

LOAD

HOLD

10 SEC.

21

DRAWER WARMER UNIT - TROUBLESHOOTING SUGGESTIONS

SYMPTOM

No lights or heat

(both drawers)

No heat (one drawer)

Runaway temperature

(one drawer)

Food dries out

Food gets soggy

Drawer falls open

Drawer falls out when opened

POSSIBLE CAUSE

Hood power switch not "ON"

Temperature control not set

Damaged thermostat or heating element (RW-style units)

Water level too high

Humidity control (air vent) not set

Drawer latch catch roller not extended before closing drawer


Press power switch to "ON"

NOTE: Drawer warmer is energized any time hood power switch is "ON" and Ansul® system is ready. Hood need not be operating.

Set for desired temperature.

Inspect thermostat, heating element, wiring and connections.

Repair/replace as necessary.

Damaged controller or temperature sensor (RWT-style units)

Inspect controller, temperature sensor, wiring and connections.

Repair/replace as necessary.

Damaged thermostat or thermobulb capillary tube (RW-style units)

Inspect cap tube for kinks or breaks. Replace thermostat.

(RWT-style units)

Humidity control (air vent) not set

Unlikely to fail "hot" due to controller or sensor malfunction.

Inspect for shorted wiring.

OPEN air vent for dry operation.

CLOSE air vent for moist operation.

Water in pan evaporated or low

Food contacting water

Add water to pan.

Use a Humitrol Rack

Water should be no more than

1/2" deep

OPEN air vent for dry operation.

CLOSE air vent for moist operation.

Be sure catch roller is extended before installing drawer.

Drawer latch damaged

Drawer stop dirty

Drawer stop damaged

Replace drawer latch

Clean and lubricate drawer stop

Replace drawer stop

22

PARTS BREAKDOWN for ANSUL® COMPONENTS

FOR USE ONLY BY AUTHORIZED

ANSUL© SERVICE PERSONNEL

Refer to Ansul© part no. 418078-05

R-102 Restaurant Fire Suppression

System Design, Installation,

Recharge and Maintenance ref. ADAPTER, QUICK-SEAL 3/8”

ANSUL© p/n 77284

ASSY, PULL STATION

ANSUL© 501389

FRONT

OF

UNIT ref. NOZZLE 290

ANSUL© p/n 419342 ref. NOZZLE 1W

ANSUL© p/n 419336

FUSIBLE LINK MODEL K

212ºF 503037 ref. MOUNTING BRACKET

RELEASE MECHANISM

R-102 ANSUL© p/n 79493

(NOT SHOWN)

MICROSWITCH 67273

TERM.BLOCK 53068 ref. CABLE, WIRE ROPE

ANSUL© p/n 15821 (50’/15m)

79653 (500’/152m) (typical) ref. PULLEY ELBOW

ANSUL© p/n 423250

(typical) BACK

OF

UNIT

CARTRIDGE LT-20-R

ANSUL© p/n 67009 ref. TANK 1.5 GAL, ANSULEX® ANSUL© p/n 429864

(NOT SHOWN)

ANSULEX ® EXTINGUISHING AGENT 1.5 GAL

ANSUL© p/n 79694 inside outside Seal with

Teflon tape

Fiber washer is always on the inside cabinet wall

ANSUL© p/n 77284

DETAIL

Seal with

Teflon tape

23

Cable sits in groove in pulley

ANSUL© p/n 423250

DETAIL

HOOD CABINET COMPONENTS

INTERNAL BRACKETS

LABEL, CONTROL

PANEL 502782

GASKET, SILICONE

15-1/4” 502772 (2 pl)

GASKET, SILICONE

18-1/2” 502773 (2 pl)

ASSY, FILTER

PACK 22619

PREFILTER

22618

CAGE,

PRE-FILTER

22683

BAFFLE, GREASE

FILTER (TYPE 3)

22684

FIRE DAMPER ASSY

280ºF (ref. 301187)

HOUSING, LIGHT

SOCKET 505098

BULB, APPLIANCE

100W 505100

GLASS GLOBE, LIGHT

BULB COVER 505099

GREASE CUP

504405

ASSY, DOOR

LEFT 502642

MAGNET, DOOR

CATCH 66502 (2 pl)

CABINET DOORS

(NON -RW UNITS)

ASSY, PULL STATION

ANSUL 501389

-RW UNITS

ASSY, DOOR

RIGHT 502646

24

LEG, ADJUSTABLE

VCS 22649 (pk 2)

(REAR LEG OPTION)

SET, CASTERS

20804

(2 swivel, 2 fixed)

HOOD ELECTRICAL & VACUUM COMPONENTS

ASSY, BLOWER

240V 502584

FITTING, 1/2” CONDUIT

STRAIGHT 57748

VACUUM SWITCH

#4 502593

VACUUM SWITCH

#1 502590

VACUUM SWITCH

#3 502592

ASSY, VAC TUBE

MANIFOLD 502588

VACUUM SWITCH

#2 502591

FRONT

OF

HOOD ref Ansul®

77284

SWITCH, POWER

8528-40

LIGHT, INDICATOR

GREEN 240V 55697

BUZZER, 240V

64834

LIGHT, INDICATOR

AMBER 240V 50516 (3 pl) ref Ansul®

77284

SWITCH, FILTER

INTERLOCK

500407 (2 pl)

LIGHT, INDICATOR

RED 240V 51157

ELECTRICAL

- UPPER

HOOD

TERMINAL BLOCK

2P 250V 53068

JUMPER, FLAME

SENSOR 54005

RELAY, 208/240V

(-RW, -RWT ONLY) 63880

HOUSING, LIGHT

SOCKET 505098

BULB, APPLIANCE

230V 100W 505100

CONTACTOR 208/240V

50A 3-PH 502789

STRAIN RELIEF

1-1/4” 504420

RELAY, BLDG

FIRE ALARM

64514

GLASS GLOBE

LIGHT BULB

COVER 505099

ELECTRICAL - UNDER HOOD

POWER CORD

NEMA 15-60P

22682

(incl. strain relief)

ELECTRICAL - REAR OF LOWER CABINET

25

GRIDDLE ELEMENTS

COVER, GREASE

DRAWER 51995

CLIP, TIE-DOWN INSULATION

53474 (pk 12)

CLAMP, ELEMENT

END 51969

NUT, 10-32

HEX 55313

F R

O

N T

26

INSULATION PAD

57407 (pk 2'x 4')

NUT, 1/4-20 HEX Ni

51253 (pk 100)

CLAMP, THERMO

BULB 52028

TUBE, THERMO

BULB 18" 51972

CLAMP, ELEMENT

CENTER 51968

JUMPER, ELEMENT

SHORT 52054 (pk 10)

ELEMENT 2250W

240V 50496

GRIDDLE (REF.) shown inverted

GRIDDLE CABINET

SPLASHGUARD G-13

COMPLETE ASSY

20632

SPLASHGUARD LEFT 55781

SPLASHGUARD, REAR 54437

SPLASHGUARD, RIGHT 55780

GRIDDLE PLATE

ASSEMBLY 51476

SEALANT, G-136

5/16” x 96” 53308

SLEEVING, 5/16”

52040 (6” rl) (2 reqd)

SHIELD, THERMO

51974 (2 reqd)

THERMO, CONTROL

50257 (2 reqd)

SCREW, 6-32x3/16

51718 (pk10)

KNOB 50259

(2 reqd)

LIGHT, SIGNAL

AMBER

208/240V 50516

480V 60436

NUT, HEX ALUMINUM

8-32 x 7/8” 61974 (pk 10)

FRONT PANEL

51025

HANDLE

51973

TRAY FRONT

53948

GREASE TRAY ASSY

COMPLETE 50279

SCREW 6ABx5/16

53935 (pk100)

SHROUD, GREASE

DRAWER 51989

27

OUTLET BOX

51997

TERMINAL BLOCK

50131

BUSHING, HEYCO 7/8”

51040 (2 reqd)

TAPE, CORK

56178 (15’rl)

NUT, 8-32 KEPS

51053 (pk100)

SCREW, 8-32 x 2-1/2”

51734 (pk100)

65

OFF

WELLS

230

205

180

95 150

120

KNOB 50259

DRAWER WARMER

20624

(optional)

21488

55530 (pk 10)

67096 heavy-duty drawer assy complete

69251

51796

52112

65923 (set includes left and right)

55683

18-302 (typ.)

55677

50483 (pk 6)

HI

LO

3

4

WELLS

5

6

7

51801(UPPER)

53565 (LOWER)

50372

55565

18-302

55487

(pk 50)

55487 (pk 50) part of 50471

50483 (pk 6)

64475 OPTIONAL

THERMOMETER

50471 (includes strike and catch)

50482 (240V)

50519 (120V)

65351 (CAVITY ASSEMBLY)

28

63271

(pk 10)

51808

55687

58936

-RWT ELECTRONIC CONTROL

OPTION (PART NO. PENDING)

WIRING SCHEMATIC

HOOD SECTION

G L1

CAC-1 CAC-2

L2 L3

CAC-3

TB1

JUMPER

PS1-1

SERVICE REQUIRED

INDICATOR

FS1(NC) VS4 SW1

COIL

COOKING APPLIANCE CONTACTOR

CHECK FILTER

INDICATOR

VS1 SW2

BLOWER MOTOR

TO

DRAWER

WARMER

POWER ON INDICATOR

VS3

REPLACE PREFILTER INDICATOR

VS2

FS1(NO)

REPLACE FILTER PACK INDICATOR

NC

NC

COIL

DRAWER WARMER RELAY

ZZZ

ANSUL® SYSTEM BUZZER

TO BLDG

FIRE ALARM

SYSTEM

COIL

FIRE ALARM RELAY

PS1-2

TO

GRIDDLE

WVG-136(RW) HOOD SECTION

WIRING SCHEMATIC

LEGEND

CAC = COOKING APPLIANCE CONTACTOR

FS1 = ANSUL® FIRE ALARM SWITCH

PS1 = POWER SWITCH

SW1 = FILTER PACK POSITION SWITCH

SW2 = GREASE BAFFLE POSITION SWITCH

TB1 = FLAME SENSOR TERMINAL BLOCK

VS1 = PRE-FILTER POSITION VAC SWITCH

VS2 = REPLACE FILTER PACK VAC SWITCH

VS3 = REPLACE PRE-FILTER VAC SWITCH

VS4 = AIRFLOW MONITOR VAC SWITCH

30

WIRING DIAGRAM

HOOD SECTION

VENTILATOR

POWER SWITCH

POWER ON

INDICATOR

16

CHECK

FILTER

INDICATOR

REPLACE

PREFILTER

INDICATOR

13

REPLACE

FILTER PACK

INDICATOR

SERVICE

REQUIRED

INDICATOR

3

2

EXTERNAL

CONTROL

TERMINAL

BLOCK 1

EXTERNAL

SHUTDOWN

CONTROL

JUMPER

1

BLACK

WHITE

HOOD

LIGHT

ANSUL

®

SYSTEM

FIRE SWITCH 2

NC

23

C

NO

25

26

3 2

C

5

4

27 1

6

15

22

21

10 9

7

14

12

VACUUM SWITCH

VS4 (AIRFLOW)

4

19

24

NO

GREASE BAFFLE

POSITION SW SW2

RED

BLOWER

MOTOR

BLACK

NO

35

36

VACUUM SWITCH

VS1 (PREFILTER)

NO

18

FILTER PACK

POSITION SW

NO

17

3 6

1

2

4

5

C

DRAWER

WARMER

RELAY

34

37

VACUUM SWITCH

VS3 (PREFILTER)

VACUUM SWITCH

VS2 (FILTER PACK)

NO NO

8

11

DISCHARGE

BUZZER

BUILDING

ALARM

RELAY

NOTES

1. REMOVE JUMPER WHEN USING

EXTERNAL CONTROL.

IMPORTANT:

DO NOT CONNECT ANY POWER TO

EXTERNAL CONTROL TERMINAL BLOCK!

2. FIRE SWITCH SHOWN WITH

ANSUL® SYSTEM CHARGED

AND COCKED

MODEL

WVG-136

WVG-136RW

WVG-136RWT

VOLTS

60Hz

208V

240V

208V

240V

C

5

L1 L2 L3

T1 T2 T3

CONTACTOR

3

2

1

33

31

32

208/240VAC

75 AMPS

POWER

CORD

GROUND

COOKING

APPLIANCE

DRAWER

WARMER

L1

17

20

20

24

3ø AMPS

L2

29

33

28

33

L3

17

20

20

24

BUILDING

ALARM

SYSTEM

1ø

AMPS

WATTS

35

40

7300

9500

38

43

7900

10400 from part no. 302802 issue J

31


GRIDDLE SECTION

G

FROM

COOKING APPLIANCE

CONTACTOR

L1 L2 L3

T1-1

T

GRIDDLE HEATING ELEMENT (RIGHT)

HEATING INDICATOR

T2-1

T

GRIDDLE HEATING ELEMENT (LEFT)

HEATING INDICATOR

T1-2

T2-2

T

T

WVG-136(RW) GRIDDLE SECTION


LEGEND

T1, T2 = GRIDDLE THERMOSTAT

32

WIRING DIAGRAM

GRIDDLE SECTION

LEFT HEATING ELEMENT PAIR

240VAC 4500 WATTS TOTAL

JUMPER

3

RIGHT HEATING ELEMENT PAIR

240VAC 4500 WATTS TOTAL

JUMPER

4

6

2

1

5

TERMINAL

BLOCK

L1

L2

FROM

COOKING

APPLIANCE

CONTACTOR

L3

GROUND

JUMPER

9

10

T 11

CONTROL

THERMOSTAT

HEATING

INDICATOR

JUMPER

9

10

T 11

CONTROL

THERMOSTAT

HEATING

INDICATOR

WIRING DIAGRAM WVG-136

GRIDDLE SECTION from p/n 48929 issue C

33


DRAWER WARMER SECTION (RW-STYLE)

L1 L3

T3

T

T4

T

DRAWER WARMER ELEMENT (UPPER)

HEATING INDICATOR

DRAWER WARMER ELEMENT (LOWER)

HEATING INDICATOR WVG-136(RW) DRAWER WARMER SECTION


LEGEND

T3, T4 = DRAWER WARMER THERMOSTAT

DRAWER WARMER SECTION (RWT-STYLE)

L1 L3

E1

DRAWER WARMER ELEMENT (UPPER)

E

CONTROLLER

E2

E

CONTROLLER

DRAWER WARMER ELEMENT (LOWER)

WVG-136(RWT) DRAWER WARMER SECTION


LEGEND

E1, E2 = DRAWER WARMER TEMPERATURE

CONTROLLER N.O. CONTACTS

34

WIRING DIAGRAM

DRAWER WARMER SECTION (RW-STYLE)

UPPER

HEATING

ELEMENT

240VAC

900WATTS

INDICATOR

LIGHT

WIRE

NUT

8

1

7

T

THERMOSTAT

LOWER

HEATING

ELEMENT

240VAC

900WATTS

8

INDICATOR

LIGHT

WIRE

NUT

7

WIRING DIAGRAM RW-26 from p/n 300959 issue A

T

THERMOSTAT

2 3

4

WIRE

NUT

WIRE

NUT

32

31

33

FROM

DRAWER

WARMER

RELAY

DRAWER WARMER SECTION (RWT-STYLE)

UPPER

HEATING

ELEMENT

240VAC

900WATTS

TEMP

PROBE

7

4

CONTROLLER

1 6

2 7

3

4

5

E

8

9

10

5

3

6

UPPER

HEATING

ELEMENT

240VAC

900WATTS

TEMP

PROBE

7

4

CONTROLLER

1 6

2 7

3

4

5

E

8

9

10

5

CONNECTOR CONNECTOR

6 9

WIRING DIAGRAM RWT-26 from p/n 307532 issue (-)

CONNECTOR

32

3 8

31

FROM

DRAWER

WARMER

RELAY

33

CONNECTOR

35

MSDS - ANSULEX™ Low pH FIRE SUPPRESSION MEDIA

36

MSDS - ANSULEX™ Low pH FIRE SUPPRESSION MEDIA

37

) 136(RW VGSV502 SvcManual W

TION TA DOCUMEN


SV502 SvcManual WVG-136(RW)

Replace two (2) fire suppression links at cooking appliance: each link is rated @ 212ºF

Replace fire damper fusible link: rated @ 280ºF

Max interval: 12 months

DOCUMENTATION


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