Wells Manufacturing WB-2 User manual

Brand: Wells Manufacturing

Model: WB-2

Type: User manual

This manual is also suitable for

WB-1

IMPORTANT: WELLS BLOOMFIELD 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

WELLS BLOOMFIELD, LLC

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

www.wellsbloomfield.com

telephone: 775-689-5703

fax: 775-689-5976

p/n 507573 Rev. (-) ECN-13404 S211 080124 cps

SUPPLEMENTAL

SERVICE

INSTRUCTIONS

for

WAFFLE BAKERS

with

ELECTRONIC

TEMPERATURE

CONTROL

Model

WB-1

WB-2

212

WELLS

This manual is considered to be Wells Bloomfield, LLC proprietary

information. Dissemination of this information to anyone other than

Wells Bloomfield authorized service agents is strictly prohibited.

Technical content of this manual, including any wiring diagrams,

schematics, parts breakdown illustrations and/or adjustment

procedures, is intended for use by qualified professional technicians

only.

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 submerge this appliance in water. Do not splash or pour

water on, in or over any controls, control panel or wiring.

Never use a wire brush or metal scraper on aluminum components.

Use bristle or fiber brush to clean grids.

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

qualified technician.

This appliance is made in the USA. Unless otherwise noted, this

appliance has American sizes on all hardware. Any conversion to

metric measurements are approximate and may vary.

Information in this manual reflects current production models as of

January 1, 2008. Specifications, model numbers, product numbers

and data subject to change without notice.

WARNING:

RISK OF

PERSONAL 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.

Only qualified technicians are

authorized to open any

access panel which requires

the use of tools. Failure to

follow this warning can result

in severe electrical shock.

CAUTION:

RISK OF

DAMAGE

DO NOT connect or

energize this appliance until

all installation instructions are

read and followed. Damage

to the appliance will result if

these instructions are not

followed.

PRECAUTIONS AND GENERAL INFORMATION

212 507573 SvcManual for WB-1, -2 Waffle Bakers

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

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

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

Operational Checks …..…………………………………...……. 3

Servicing Instructions

Troubleshooting Guide ...................................................... 5

Top Grid Assembly ............................................................ 6

Bottom Grid Assembly ....................................................... 7

Exploded Views …….....................…………………………….. 8

Wiring Diagrams ..................................................................... 10

This manual contains information needed to properly service and repair Wells Waffle Bakers.

This manual applies to the following Wells Bloomfield models manufactured after Jan. 1, 2008:

WB-1

WB-2

For installation, operation and maintenance instructions, refer to Operation Manual p/n 37055.

For specifications, general arrangement and dimensions, refer to General Layout Data p/n 37093.

For units built prior to Jan 1, 2008, refer to Supplemental Service Instructions p/n 502973.

General Dimensions:

TABLE OF CONTENTS

INTRODUCTION

SPECIFICATIONS

WB-1 WB-2

10-1/8” Wide x 16” Deep x 8-3/4” High

Appliance is 18-3/4” High with grid open.

19-13/16” Wide x 16” Deep x 8-3/4” High

Appliance is 18-3/4” High with grid open.

MODEL STYLE

VOLTAGE

1ø

WATTS AMPS

POWER SUPPLY

CORD

WB-1

Single

Waffle Baker

120 VAC 900 W 7.5 A NEMA 5-15P

208 VAC 676 W 3.25 A NEMA 6-15P

240 VAC 900 W 3.75 A NEMA 6-15P

WB-2

120 VAC 1800 W 15 A NEMA 5-20P

208 VAC 1352 W 6.5 A NEMA 6-15P

240 VAC 1800 W 7.5 A NEMA 6-15P

Double

Waffle Baker

212 507573 SvcManual for WB-1, -2 Waffle Bakers

FEATURES & OPERATING CONTROLS

ITEM COMMENTS

TEMPERATURE ADJUSTMENT Dial adjustment of temperature control

LOWER GRID ASSEMBLY Lower cooking element; contains temperature sensor

UPPER GRID ASSEMBLY Upper cooking element

GRID HANDLE Used to safely raise / lower grid

DRIP TRAY Catches excess waffle batter; removable for easier cleaning

POWER SWITCH Energize / de-energize waffle baker

HINGE ASSEMBLY Supports upper grid; allows grid to be raised/lowered for baking

DATA PLATE Lists manufacturer information, agency approvals and electrical specifications

TIMER Mechanical “bell” timer; rings to indicated end of cook cycle

RUBBER FEET Provide means of leveling waffle baker; provide non-slip support

POWER CORD 115VAC NEMA 5-15P or 5-20P / 208-240VAC NEMA 6-15P

BACK VIEW

UPPER GRID

(RAISED POSITION)

POWER

SWITCH

UPPER GRID

(LOWERED

POSITION)

HANDLE

DRIP TRAY

TIMER

LOWER GRID

ADJUSTABLE NON-SLIP FEET

TEMPERATURE

CONTROL

POWER

CORD

NAME

PLATE

212 507573 SvcManual for WB-1, -2 Waffle Bakers

OPERATIONAL CHECKS

A. AMPERAGE CHECKS

1. Waffle Baker sections are tested separately. Use WB-1 amperage

rating when testing an individual Waffle Baker section.

2. Total amperage may be checked with an inductive amperage tester

(Amprobe™ or similar) by encircling a single wire at the power

switch.

3. Make all testing hookups with the Waffle Baker unplugged and

when the cooking surfaces are cold

B. TEMPERATURE CHECKS

1. Desired baking temperature is 390ºF ±5ºF (200ºC ±3ºC).

2. Turn the power switch ON and allow Waffle Baker to heat for a

minimum of 30 minutes. Insert a pyrometer of known accuracy

between the closed grids and allow the readings to stabilize.

3. Temperature may be adjusted turning the controller dial adjustment

(item 6).

C. VOLTAGE AND RESISTANCE TEST POINTS

D. VOLTAGE AND RESISTANCE CHECKS

1. Voltage between TP 1 and TP 2 (upper grid) will be

120V when unit is energized and controller is calling

for heat.

2. Voltage between TP 3 and TP 4 (lower grid) will be

120V when unit is energized and controller is calling

for heat.

3. IMPORTANT:

Always unplug appliance from electric power and

momentarily ground all three prongs of the power

cord before attempting resistance checks.

Resistance between TP 5 and TP 6 (with red and

white sensor leads disconnected from temperature

controller)

At room temperature ............... 100,000 ohms

At baking temperature .................. 600 ohms

CAUTION:

ELECTRIC SHOCK

HAZARD

Live electric circuits may

be exposed during these

procedures. Take necessary

precautions to avoid electric

shock.

CAUTION:

BURN HAZARD

HOT SURFACES

Equipment surfaces may be

hot during these procedures.

Take necessary precautions

to avoid burns.

AMPERAGE

WB-1 WB-2

120 7.5 15.0

208 3.3 6.5

240 3.8 7.5

VOLTAGE

212 507573 SvcManual for WB-1, -2 Waffle Bakers

TOP GRID ASSEMBLY

BOTTOM GRID ASSEMBLY

TP 1

TP 3

TP 4

TP 2

TP 5

TP 6

TEMP

SENSOR

GROUND

CONNECTION

100Ω

1KΩ

10KΩ

100KΩ

1MΩ

100

125

150

175

200

(ºC)

(ºF)

122

167

212

257

302

347

392

THERMAL RESPONSE CURVE

SENSOR P/N 507279

TYP. ROOM TEMP

77ºF (25ºC) 100,000≈ Ω

NORMAL BAKING TEMP

392ºF (200ºC) 600≈ Ω

OPERATIONAL CHECKS (continued)

E. EVALUATING THE RESULTS

1. Presence of 120V in Test #1 or Test #2 (calling for heat but

element not heating) indicates a damaged heating element.

2. Absence of 120V in Test #1 or Test #2 when calling for heat

indicates:

a.) power switch

OFF or damaged; or,

b.) temperature control is set too low; or,

c.) damaged temperature controller; or,

d.) a wiring or connector problem

3. Open or shorted temperature sensor in Test #3 indicates:

a.) damaged temperature sensor

b.) a wiring or connector problem

F. TROUBLESHOOTING SUGGESTIONS

1. In 208/240V units, the elements are wired in series: in 120V units,

the elements are wired in parallel.

Amperage readings 1/2 of normal indicate a 208/240V unit

operating on 120V, or possible electrical problems in either the top

or bottom grid assembly. Wiring investigation, as well as voltage

and resistance measurements, may be required to isolate the

exact problem.

2. Amperage readings significantly above normal indicate either a unit

operating on the wrong voltage, a partial short, or a deteriorated

heating element. Again, voltage and resistance measurements will

be required to pinpoint the problem.

3. Failure of an individual grid assembly to heat indicates electrical

or component problems in that area. Voltage measurements will

be required to isolate the exact problem.

4. Grids which heat, but do not come up to temperature, indicate a

possible temperature adjustment problem, a damaged element or

a problem with the controller or sensor. Also note that heavily

carboned grids will exhibit this symptom.

5. Grids which overheat uncontrollably indicate either a temperature

sensor that is not firmly attached to the lower grid, a damaged

temperature controller or (rarely) an electrical short.

CAUTION:

ELECTRIC SHOCK

HAZARD

Live electric circuits may

be exposed during these

procedures. Take necessary

precautions to avoid electric

shock.

CAUTION:

BURN HAZARD

HOT SURFACES

Equipment surfaces may be hot

during these procedures. Take

necessary precautions to

avoid burns.

212 507573 SvcManual for WB-1, -2 Waffle Bakers

SERVICING INSTRUCTIONS

212 507573 SvcManual for WB-1, -2 Waffle Bakers

SYMPTOM POSSIBLE CAUSE SUGGESTED REMEDY

Unit does not heat Power switch OFF Press switch to ON

Unit not plugged in or circuit not

energized

Check/reset circuit breaker

Be sure unit is plugged into an

energized outlet

Temperature controller not set Adjust controller for desired

temperature

Damaged power cord, power

switch or internal wiring

Use wiring diagram and voltage

checks to diagnose

One side does not heat Power switch OFF Press switch to ON

Temperature controller for that

side not set

Adjust controller for desired

temperature

Damaged power switch or

internal wiring

Use wiring diagram and voltage

checks to diagnose

Damaged controller Replace controller

Damaged temp sensor or sensor

disconnected from controller

Check sensor (should be 10K to

100K ohms)

Verify connections

One element does not heat Damaged heating element Replace heating element

One side gets too hot Temperature controller not set Adjust controller for desired

temperature

Temp sensor not firmly attached

to lower grid

Be sure sensor is securely

attached to mounting boss

One side does not get hot

enough

Temperature controller not set Adjust controller for desired

temperature

Grids need to be de-carbonized Refer to Operation Manual for

de-carbonization instructions

Grid smokes excessively Grid not properly prepared prior

to baking

Brush grids with clean vegetable

oil or apply an appropriate

commercial cooking spray

Operated at too high a

temperature

Adjust controller for desired

temperature

Interior of grid contaminated with

batter

Clean components. Be sure grid

gasket is properly in place and

that grid is properly assembled

Timer does not shut off heating

elements

Proper operation. Timer is a

signalling device only

Refer to Operation Manual for

proper use of the timer

A. TROUBLESHOOTING GUIDE

SERVICING INSTRUCTIONS (continued)

212 507573 SvcManual for WB-1, -2 Waffle Bakers

CAUTION:

ELECTRIC SHOCK

HAZARD

Unplug appliance from

electric power before

removing any panel or

access cover.

SERVICE INSTRUCTION - COMPONENT REPLACEMENT

WAFFLE BAKER TOP GRID ASSEMBLY

3032730327

CONDUIT, CAST

P/N 50329

Insert small diameter end

into hinge

SOLID CONDUIT

P/N 55552 (90º for WB-1)

P/N 55547 (45º for WB-2)

PLUG,

P/N 50328

HINGE PIVOT

HINGE

P/N 50322

SCREW 8-32

P/N 51715 (pk 100)

Ground wire gets 4“ of

FIBERGLASS SLEEVE

P/N 54573 (rl 100ft)

after it is pulled into casting

Ground wire

Power wires

CASTING, TOP

P/N 50327

GRID, UPPER P/N 58919

Be sure pattern of grids is

properly aligned.

GASKET, GRID P/N 50337

Check to insure gasket is

installed flush around casting

CLAMP PLATE, TOP

P/N 50431

INSULATION PAD,

WB ELEMENT TOP

P/N 50430

Between clamp plate

and element

ELEMENT, HEATING

120V 450W P/N 507277

Assemble so that terminals

are at the 9:00 position

(when grid detail faces away,

and handle is at 6:00).

SCREW, 8-32 x 5/16“

P/N 51715 (pk 100)

Do not tighten until all

screws are in place.

Ensure that

element terminals are

centered in opening of

clamping plate before

tightening screws.

Trap ground wire under

this screw.

NOTES:

The drawings shows the right side top baking

assembly for a WB-2.

The left side assembly is similar, with the hinge

pivot components reversed.

The top baking assembly for a WB-1 is identical

to this drawing, with the exception of the conduit,

which is 90º, rather than the 45º conduit shown.

Power wires get 9“ of

RUBBERIZED SLEEVE

P/N 50284 (rl 10 ft) after

they are pulled into casting

HANDLE (ref.)

8-32 KEPS NUT 51053 (pk 100)

PLUG, TOP CASTING P/N 58628

Insert stud on clamping plate of Grid &

Element Assembly into hole of Casting &

Hinge Assembly. Ensure that grid gasket is

evenly seated. Secure assemblies with nut

and insert plug.

Pull power wires

through hinge to

this point

Pull ground wire

through hinge to

this point

B. TOP GRID ASSEMBLY

SERVICING INSTRUCTIONS (continued)

C. BOTTOM GRID ASSEMBLY

CAUTION:

ELECTRIC SHOCK

HAZARD

Unplug appliance from

electric power before

removing any panel or

access cover.

Rotate grid assembly to

ensure wires and mounting

studs align with bottom

casting

Route wires through LARGE

hole in bottom of casting.

Be sure wires cannot chafe

or rub on sharp edges of

cabinet or bottom casting

Check to ensure gasket is installed

flush around casting

CASTING, BOTTOM P/N 50326

Apply a small amount of grease

to top of casting, then assemble

grid to casting

GASKET, BOTTOM GRID P/N 50338

Route wires through FRONT holes in

gasket and cabinet.

NUT, ACR 8-32 P/N 58627 (pk 10)

Insert mounting studs into holes in

upper ledge of casting. Assemble

using cap nuts

PROBE, TEMP SENSOR

P/N 507279

CASTING, GRID BOTTOM

P/N 58920

Check for chips or

other blemishes

GASKET, GRID

P/N 50337

Check to insure

gasket is installed

flush around casting

ELEMENT, 120V 450W

P/N 507277

Apply graphite to

mounting holes

PLATE, CLAMPING

P/N 50445

Verify mounting

studs pointing away

from grid

SCREW, 8-32 x 5/16“ P/N 51715 (pk 100) Do not tighten

until all screws are in place. Ensure that element

terminals are centered in opening before tightening.

Base and temperature

control bracket mount

to cabinet at these

threaded holes

(4 per base)

Grid studs pass

thru these holes

in base to mount

NOTE: Grid assembly

shown inverted

BASE CASTING

(shown for reference)

SERVICE INSTRUCTION - COMPONENT REPLACEMENT

WAFFLE BAKER BOTTOM GRID ASSEMBLY

212 507573 SvcManual for WB-1, -2 Waffle Bakers

EXPLODED VIEW

212 507573 SvcManual for WB-1, -2 Waffle Bakers

SWITCH, LIGHTED

55127

MOUNTING, HINGE

60332

PIN, HINGE

50333

PLUG, HINGE PIVOT

50328

HINGE, 50322

E-CLIP 50222

(pk 10)

FITTING, CONDUIT

50329

CONDUIT 55547

MOUNTING, CONDUIT

52101

ASSY, TIMER & KNOB

50446

BELL TIMER (ONLY)

51549

KNOB (ONLY) 50447

DRIP TRAY

21489

ASSY, HOLE PLUG

61064

ASSY, SHELL WB-2

51551

ASSY, SHELL WB-1

53653

STRAIN RELIEF

51217

GASKET, BOTTOM

50338

CONTROLLER,

TEMPERATURE

507278

PANEL, BOTTOM

WB-2

51856

FOOT, RUBBER

65724

(pk 4)

CABINET WB-2

CABINET WB-1

GASKET, BOTTOM

50338

ASSY, TIMER & KNOB

50446

BELL TIMER (ONLY)

51549

KNOB (ONLY)

50447

DRIP TRAY

21489

SWITCH, LIGHTED

55127

STRAIN RELIEF

51217

FOOT, RUBBER

65724

(pk 4)

CONTROLLER,

TEMPERATURE

507278

ASSY, HOLE PLUG

61064

MOUNTING, HINGE

60332

PIN, HINGE

50333

PLUG, HINGE PIVOT

50328

HINGE, 50322

E-CLIP 50222

(pk 10)

FITTING, CONDUIT

50329

CONDUIT 55552

BUSHING, CONDUIT

REAR PANEL,

WB-1

507478

REAR PANEL,

WB-2

507479

BRACKET,

CONTROL MOUNT

507482

BRACKET,

CONTROL MOUNT

507482

EXPLODED VIEW (continued)

212 507573 SvcManual for WB-1, -2 Waffle Bakers

UPPER GRID

LOWER GRID

PLUG, HINGE

50328

CLAMPING PLATE

UPPER 50431

INSULATION, TOP

ELEMENT

50430

GASKET, GRID

50337

GASKET, GRID

50337

ELEMENT, HEATING

120V 450W

(INCL. INSULATORS)

507277

ELEMENT, HEATING

120V 450W

(INCL. INSULATORS)

507277

GRID, UPPER

58919

GRID, BOTTOM

58920

HANDLE, WIRE

50335

CASTING, UPPER

50327

HOLE PLUG 5/8 DIA

58628

HINGE 50322

FITTING, CONDUIT

50329

SLEEVING, RUBBER

50284 (pk 10 ft. rl.)

SLEEVING, GLASS

54573 (pk 250 ft. rl.)

CLAMPING PLATE

LOWER 50445

CASTING, LOWER

50326

GASKET, BOTTOM

50338

NUT, 8-32 ACORN

58627 (pk 10)

PROBE, TEMPERATURE

507279

ASSY, UPPER GRID

120V 58881

240/208 58880

ASSY, LOWER GRID

120V 61743

240/208 61742

WIRING DIAGRAMS

212 507573 SvcManual for WB-1, -2 Waffle Bakers

230

110

COMM

SENSOR

OUTPUT

BLACK

WHITE

RED

WHITE

UPPER

HEATING

ELEMENT

120V 450W

UPPER

HEATING

ELEMENT

120V 450W

LOWER

HEATING

ELEMENT

120V 450W

LOWER

HEATING

ELEMENT

120V 450W

LIGHTED

POWER

SWITCH

LIGHTED

POWER

SWITCH

POWER

CORD

POWER

CORD

TEMPERATURE

CONTROL

BOARD

TEMPERATURE

CONTROL

BOARD

TEMPERATURE

SENSOR

TEMPERATURE

SENSOR

VOLTS

NOM. AMPS

120

208

240

220

7.5

3.3

3.8

3.6

MODEL WB-1 SINGLE WAFFLE BAKER 120V SINGLE PHASE

MODEL WB-1 SINGLE WAFFLE BAKER 208-240V SINGLE PHASE

WIRE

COUPLER

307434 ISSUE (-)

WAFFLE BAKER WB-1

WIRING DIAGRAMS (continued)

212 507573 SvcManual for WB-1, -2 Waffle Bakers

230 230

110 110

COMM COMM

SENSOR SENSOR

OUTPUT OUTPUT

BLACK

WHITE

RED RED

WHITE WHITE

UPPER

HEATING

ELEMENT

120V 450W

UPPER

HEATING

ELEMENT

120V 450W

LEFT UPPER

HEATING ELEMENT

120V 450W

RIGHT UPPER

HEATING ELEMENT

120V 450W

LOWER

HEATING

ELEMENT

120V 450W

LOWER

HEATING

ELEMENT

120V 450W

LEFT LOWER

HEATING ELEMENT

120V 450W

RIGHT LOWER

HEATING ELEMENT

120V 450W

LIGHTED

POWER

SWITCH

LIGHTED

POWER

SWITCH

LIGHTED

POWER

SWITCH

LIGHTED

POWER

SWITCH

POWER

CORD

POWER

CORD

TEMPERATURE

CONTROL

BOARD

TEMPERATURE

CONTROL

BOARD

TEMPERATURE

CONTROL

BOARD

TEMPERATURE

CONTROL

BOARD

TEMPERATURE

SENSOR

TEMPERATURE

SENSOR

TEMPERATURE

SENSOR

TEMPERATURE

SENSOR

10 10

VOLTS NOM. AMPS

208

240

220

6.5

7.5

7.2

MODEL WB-2 DUAL WAFFLE BAKER 120V SINGLE PHASE

MODEL WB-2 DUAL WAFFLE BAKER 208-240V SINGLE PHASE

WIRE

COUPLER

WIRE

COUPLER

VOLTS

120

NOM. AMPS

15.0

307434 ISSUE (-)

WAFFLE BAKER WB-2

Wells Manufacturing WB-2 User manual

Brand: Wells Manufacturing

Model: WB-2

Type: User manual

This manual is also suitable for

WB-1

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Wells Manufacturing WB-2 User manual

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Wells Manufacturing WB-2 User manual

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