Wells WVG-136 Service 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
WVG-136
WVG-136RW
and
502
WVG-136RWT
ELECTRIC
GRIDDLE
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 SV502 Rev.(-) S502 080516 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
CAUTION:
RISK OF
DAMAGE
DO NOT connect or energize
this appliance until all
installation instructions are
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.
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.
SV502 SvcManual WVG-136(RW)
read and followed. Damage to
the appliance will result if
these instructions are not
followed
.
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
GENERAL
SPECIFICATIONS
MODEL
WVG-136 NO
WVG-136RW
WVG-136RWT
DRAWER
WARMER
YES
VOLTS
60Hz
208V 17 29 17 35 7300
240V 20 33 20 40 9500
208V 20 28 20 38 7900
240V 24 33 24 43 10400
3ø AMPS
L1 L2 L3
1ø
AMPS
WATTS DIMENSIONS
30-3/8" Wide
(42-3/8" incl. spacers)
77-1/4" High
35-1/2" Deep
INTRODUCTION
SV502 SvcManual WVG-136(RW)
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
GENERAL
28 28
VENTILATOR CONTROL PANEL
see pages 4 & 5
18
16
a15
56
18
23
GRIDDLE CONTROL PANEL
see page s 4 & 5
IN CASE OF
22
a10
FIRE
ANSUL
PULL
HANDLE
TO ACTIVATE
FIRE SUPPRESSION
SYSTEM
®
53
19
16
a11
23
28
1
12
40
41
a6
a31
44
WARMER CONTROLS
see pages 4 & 5
8
Fig. 1 Ventilator Section Operating Features & Controls
2
4243
SV502 SvcManual WVG-136(RW)
9
38
38
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.
SV502 SvcManual WVG-136(RW)
56.
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.
GENERAL
3
FEATURES & OPERATING CONTROLS (continued)
E
GENERAL
V.02 V.03 V.04 V.05 V.06
V.01
Fig. 2 Ventilator Section Controls & Indicator Lights
W.04
HUMITROL
RACK
DRAWER
INSERT
PAN
GRIDDL
SURFACE
GREASE
TROUGH
GREASE
DRAWER
W.03
W.02
W.01
G.02
RW-STYLE
G.01
GRIDDLE
SV502 SvcManual WVG-136(RW)
OPTIONAL ROLL WARMER
Fig. 3 Griddle & Warmer Drawer Operating Features & Controls
W.06
RWT-STYLE
W.05
4
FEATURES & OPERATING CONTROLS (continued)
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
* See PRECAUTIONS & GENERAL INFORMATION, pages 6 - 8 for special procedures regarding
prefilters and filter packs.
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.
GRIDDLE SECTION CONTROLS
GENERAL
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
SV502 SvcManual WVG-136(RW)
W.05
W.06
WARMER TEMPERATURE
CONTROL
POWER ON INDICATOR
THERMOMETER
(OPTIONAL )
HUMIDITY CONTROL
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
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
6
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.
SV502 SvcManual WVG-136(RW)
HOOD SECTION - OPERATIONAL NOTES (continued)
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.
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
SV502 SvcManual WVG-136(RW)
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.
7
HOOD SECTION - OPERATIONAL NOTES (continued)
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.
8
SV502 SvcManual WVG-136(RW)
HOOD SECTION - OPERATIONAL NOTES (continued)
FOR VERTICAL
MOUNTING
THIS
SIDE UP
FIRE
DAMPER
DAMPER
SUPPORT
AIR FLOW
¬ ®
SHUTTER
FUSIBLE LINK
280ºF
ACCESS DOOR
THIS SIDE
THIS SIDE UP
FOR HORIZONTAL
MOUNTING
LABEL
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.
SV502 SvcManual WVG-136(RW)
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)
VENTILATOR HOOD
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.
SV502 SvcManual WVG-136(RW)
10
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