Bakers Pride Oven VHVA1620E, VHVA1828E User Manual

INSTALLATION

AND

OPERATING

INSTRUCTIONS

Models: VH1620E, VHVA1620E, VH1828E & VHVA1828E

COUNTERTOP MODEL

ELECTRIC CONVEYOR OVENS

INTENDED FOR OTHER THAN HOUSEHOLD USE

RETAIN THIS MANUAL FOR FUTURE REFERENCE

OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES

FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and

liquids in the vicinity of this or any other appliance.

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WARNING: Improper installation, adjustment, alteration, service or maintenance can

cause property damage, injury or death. Read the Installation, Operating and
Maintenance Instructions thoroughly before installing or servicing this equipment.

Initial heating of oven may generate smoke or fumes and must be done in a well ventilated area.
Overexposure to smoke or fumes may cause nausea or dizziness.

This equipment has been engineered to provide you with year-round dependable service when used
according to the instructions in this manual and standard commercial kitchen practices.

ANSI/NSF4

P/N U4173A 12/05

BAKERS PRIDE OVEN CO., INC.

30 Pine Street

New Rochelle, NY 10801
[phone] Phone [phone] US& Canada
[phone] Fax www.bakerspride.com WebAddress

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Bakers Pride takes pride in thedesign and quality of our products. When used as intended and with proper
care and maintenance, you will experience years of reliable operation from this equipment. To ensure best
results, it is important that you carefully read and follow the instructions in this manual.

Installation and start-up should be performed by a qualified installer who has thoroughly read, understands
and follows these instructions.
If you have questions concerning the installation, operation, maintenance or service of this product, contact
our Technical Service Department at [phone].

SAFETY PRECAUTIONS

Before installing and operating this equipment be sure everyone involved in its operation are fully trained
and are aware of all precautions.Accidents and problems can result by a failure to follow fundamental rules
and precautions.

The following words and symbols, found in this manual, alert you to hazards to the operator, service
personnel or the equipment. The wordsare defined as follows:

DANGER:

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WARNING:

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seriousinjuryor death.

CAUTION:

moderateinjuryorproductor property damage.

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NOTICE:

eventhoughnot dangerous.

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Thissymbolwarnsof imminent hazard which will result inseriousinjuryor death.

This symbol refers to a potential hazard or unsafe practice, which could result in

Thissymbol refers to a potential hazard or unsafepractice,which may result in minor or

This symbol refers to informationthat needs special attentionormust be fullyunderstood

GENERAL INFORMATION

THIS MANUAL SHOULD BE RETAINED FOR FUTURE REFERENCE

CAUTION:

positioned so the general public can use the equipment make sure that cautions, warnings, and

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operating instructions are clearly posted near each unit so that anyone using the equipment will
useit correctly and not injure themselvesorharmtheequipment.

WARNING:

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andfrequencylistedon the data plate. Connect only to 1or 3 phase as listedonthe data plate.

WARNING:

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nationalelectricalcodeand/orotherlocal electrical codes.

These models are designed, built, and sold for commercial use. If these models are

Checkthe data plate on thisunit before installation.Connect the unit onlyto the voltage

Electrical and grounding connections must comply with the applicable portions of the

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WARNING:

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powerplug,indicatingthatyou are working on thecircuit.

WARNING:

strongly recommend having a competent professional install the equipment.Alicensed electrician
should make the electrical connections and connect power to the unit. Local codes should always

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be used when connecting these units to electrical power. In the absence of local codes, use the
latestversionof the National Electrical Code.

WARNING:

codes, or in the absence of local codes, with the National Electrical code, ANSI/NFPA 70, Latest
Edition to protect the user from electrical shock. It requires a grounded system and a dedicated

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circuit, protected by a fuse or circuit breaker of proper size and rating. Canadian installation must
complywiththe CanadianElectricalCode, CSAC22.2,asapplicable

Disconnect device from electrical power supply and place a Tag Out-Lockout on the

Installper the spacing requirements listed in the installationsection of this manual. We

This device should be safely and adequately grounded in accordance with local

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WARNING:

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maintenanceorrepair, contact Bakers Pride.

Afactoryauthorizedagentshouldhandle all maintenance and repair. Before doing any

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WARNING:

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surface.

WARNING:

installationandfromthereto an independent earth connection.

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NOTICE:

the absence of local codes, with the national electrical code ANSI/NFPA70- latest edition.

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Canadian installation must comply with CSA-STANDARD C.22.2 Number 0 M1982 General
Requirements-CanadianElectrical Code PartII,109-M1981-CommercialCookingAppliances.

WARNING: -

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equipment.

NOTICE:

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NOTICE:

Fire ProtectionAssociation, Inc. states in its NFPA96 latest edition that local codes are Authority
Having Jurisdiction when it comes to requirements for installation of equipment. Therefore,

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installationshouldcomplywithalllocalcodes.

Never clean any electrical unit by immersing it in water. Turn off before cleaning

An earthing cable must connect the appliance to all other units in the complete

The unit when installed, must be electrically groundedand comply with local codes, or in

SHOCK HAZARD

Thisproductis intended for commercial use only.Notforhouseholduse.

Local codes regarding installation vary greatly from one area to another. The National

De-energize all power to equipment before cleaning the

IMPORTANT FOR FUTURE REFERENCE

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Notes:

Please complete this information and retain this manual for the life of the equipment. For
Warranty Service and/or Parts, this information is required.

Model Number Serial Number Date Purchased

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TABLE OF CONTENTS

SECTION ITEM PAGE

1 Receiving 5
2 Location & Minimum Clearances 5
3 Installation 5
4 Stacking 6
5 Electrical Connections 6
6 System Check 8
7 Initial Start-Up 10

8 Shutdown 11
9 Special Features 11
10 Cleaning 12
11 Operator Maintenance 13
12 Rating Plate 14
13 Conveyor Removal 15
14 Conveyor Installation 15
15 Conveyor Belt Speed Calibration 16
16 Troubleshooting Guide 18
17 Temperature Control Conversion Chart 23
18 Solid State Relay Identification 24
19 Electrical Schematics & Wiring Diagrams 26

A.

VHVA1620E Schematic, 208, 220 or 240VAC, 1 Phase 26

B.

VHVA 1620E Wiring Diagram, 208, 220 or 240VAC, 1 Phase 27

C. 3

VHVA1620E Schematic, 208, 220 or 240VAC, Phase 28
D. VHVA 1620E Wiring Diagram, 208, 220 or 240VAC, 3 Phase 29
E. VH 1620E Schematic, 208, 220 or 240VAC, 1 Phase 30
F. VH 1620E Wiring Diagram, 208, 220 or 240VAC, 1 Phase 31
G. VH 1620E Schematic, 208, 220 or 240VAC, 3 Phase 32
H. VH 1620E Wiring Diagram, 208, 220 or 240VAC, 3 Phase 33
I. VHVA 1828E Schematic, 208, 220, or 240, 1 Phase 34
J. VHVA 1828E Wiring Diagram, 208, 220, or 240, 1 Phase 35
K. VHVA 1828E Schematic, 208, 220, or 240, 3 Phase 36
L. VHVA 1828E Wiring Diagram, 208, 220, or 240, 3 Phase 37
M. VH 1828E Schematic, 208, 220, or 240, 1 Phase 38
N. VH 1828E Wiring Diagram, 208, 220, or 240, 1 Phase 39
O. VH 1828E Schematic, 208, 220, or 240, 3 Phase 40
P. VH 1828E Wiring Diagram, 208, 220, or 240, 3 Phase 41

20 Parts Lists & Exploded Views 42

A. External Covers 42
B. Conveyor Assembly 42
C. Blower Motor Cover Assembly 43
D. Blower Assembly 43
E. VH Series Only 43
F. Plenum “Finger” Assembly 43
G. Main Power Control Box 44
H. Electric Control Box 45
I. Cool Down Thermostat, Elements, Switch & Probe 46

21 Warranty 47

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I. INSTALLATION INSTRUCTIONS

MODELS COVERED TOTAL KW PHASE

VH1620E 6.4 1 or 3
VHVA1620E 6.4 1 or 3
VH1828E 12.4 1 or 3
VHVA1828E 12.4 1 or 3

1. RECEIVING

Read the notice on the outside carton regarding damage in transit. "CONCEALED DAMAGE", damage
discovered after opening the crate(s), MUST be reported immediately to the carrier. The carrier will perform
an inspection of the damage and furnish forms for the consignee's claim against the carrier. Retain ALL
packaging material - including outer carton, until the inspection hasbeen completed.

Proper and secure storage facilities should be arranged for the conveyor oven(s) if necessary to protect it
from outdoor or damp conditions at all times prior toinstallation.

2. LOCATION AND MINIMUM CLEARANCES

Adequate air space must be provided for the proper venting of the rear exhaust air and provision made for
venting of cooking vapors. The ConveyorOven must be installed in awell-ventilated area.

NOTE:

Attached rear rubber bumpers must not be removedand can contact a rear wallif present.

Conveyor Ovens can be installed with "ZERO" clearances (back and sides) from combustible and non­combustible materials. (Rear rubber bumpers are the “Zero” clearance points on theback of the unit.) S e e
rating plate attached to the control box doorpanel.

The Conveyor Oven is intended for countertop mounting if mounted on the 4" legs provided. The Oven is
NOT approved for mounting on any floor. Keep the area around your conveyor oven free and clear of all
combustible materials.

3. INSTALLATION

Place the conveyor oven and parts as close to the area of final installation before uncrating. Your conveyor
oven is packed sitting on its bottom. Leave it this way until unpacked. The pallet may be left under the
conveyor oven for convenience in further handling. Unpack carefully to avoid damage to the unit. If
concealed damage is discovered, follow the instructions detailed in Section1 above.

DO NOT LIFT EXCESSIVE WEIGHT

A. Legs are shipped unattached. Make sure each leg is attached and tightened before placing the

conveyor oven in place. Each leg isadjustable to accommodate variationsin the mounting surface.

B. Using sufficient help (2 or more people), lift the conveyor oven upward and place on the countertop

surface. Lift the conveyor oven by gripping the bottom of the unit. THE FOLLOWING ITEMS ARE
NOT TO BE USED AS LIFTING "HANDLES": Side-mounted control boxes (2), removable front door
(with handles), the conveyor belt assembly, the rear fan housing assembly.

C.

THE CONVEYOR BELT ASSEMBLY IS MOUNTED BACKWARDS FOR SHIPPING. THE
CONVEYOR BELT ASSEMBLY MUST BE REMOVED AND REVERSED PRIOR TO OPERATION.

See Section 6a, b for further instructions.

D. Position the conveyor oven in its final location, maintaining the minimum clearances specified in

Section 2 above.

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E. Remove all loose parts and packages from the interior of the conveyor oven. The conveyor oven has

(4) air-directing "plenum fingers" in the interior cooking chamber. Check these items for proper
mounting. For further information on removal and mounting of interior panels, see Section 10,
cleaning.

4. STACKING

Your conveyor oven(s) can be
stacked up to (3) high. Each unit is
built exactly the same, so it does not
matter in which order they are

When
stacking,
remove
legs from
upper unit.

stacked. For stacking of (2) units,
remove the legs from the second
(upper) unit prior to mounting on top
of the bottom unit. For stacking of (3)
units, it is preferable to use a
"stacking kit", which allows all
conveyor ovens to be supported by
an external framework, such as a
table, with each conveyor oven
having all legs removed.

"CAUTION: If you use a multiple stack
assembly, remember that each ovenhas
its own power disconnect. Make sure
ALL main switches are OFF before any
cleaningormaintenanceisperformed.

Use
Stacking
Brackets
to secure
ovens
together.

1. Remove two bottom screws from the top oven rear panel.

2. Remove two top screws from the bottom oven rear panel.

3. Install the right and left stacking brackets as shown in above diagram.

4. Reinstall the four removed screws.

When stacking,
align Dimpled
Foot of upper
unit into
matching
Dimple of
bottom unit.

5. ELECTRICAL CONNECTIONS

General Instructions

a

) Only use copper conductor wires rated at 90°C suitably sized for the electric current drawn.
b) Dual Air Model 1828E ovens are constructed for permanent connections - no power cord is supplied.
c) Dual Air Model 1620E ovens are supplied with a flexible power cord and plug.
d) Make sure the electrical supply corresponds with that specified on the rating plate.
e) Only a licensed electrician should make the electrical connections.
f) Proper connections are shown on the wiring diagrams as well as the rating plate.
g) Wiring diagrams are located in the control box containing the Main Switch (green rocker).
h) When installed, the unit must be electrically grounded in accordance with the local codes and/or the

latest edition of the national Electrical Code ANSI/NFPA No. 70 in the USA or Canadian Electrical
Code, CSA Standard C22.1, Part 1 in Canada.

VH-, VHVA1620E: POWER SUPPLY (EACH) 6.4 KW/Hr VH-, VHVA1828E: POWER SUPPLY (EACH) 12.4 KW/Hr

Volts Phase L1 L2 L3 Volts Phase L1 L2 L3

200-208 1 31 31 N/A 200-208 1 60 60 N/A

220 1 29 29 N/A 220 1 56 56 N/A
230 1 28 28 N/A 230 1 54 54 N/A
240 1 27 27 N/A 240 1 52 52 N/A

200-208 3 14 21 19 200-208 3 27 40 38

220 3 13 18 17 220 3 25 38 36
230 3 12 17 16 230 3 24 36 34
240 3 12 18 17 240 3 23 35 33

EACH CONVEYOR OVEN REQUIRES A SEPARATE CONNECTION

CAUTION:

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causenauseaanddizziness. Besure the oven is placedina well-ventilatedarea.

Normalcooking operations may resultin the productionof smoke or fumes and may

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Field Connections

NOTE: VERIFY THAT INPUT POWER MATCHES THE OVEN POWER REQUIREMENTS STATED
ON THE RATING PLATE, WHICH IS LOCATED ON THE POWER CONTROL BOX.

IF INPUT VOLTAGE DOES NOT MATCH OVEN VOLTAGE REQUIREMENTS, THE CORRECT
CONVEYOR OVEN MUST BE INSTALLED. THE CONVEYOR OVEN CANNOT BE MODIFIED IN THE
FIELD TO MATCH INPUT POWER.

CAUTION: VERIFY VOLTAGE OF EACH LEG. IF ANY LEG HAS A

FOR 3 PHASE UNITS ONLY:

VOLTAGE GREATER THAN 240V THIS LEG MUST BE CONNECTED TO L-3 ON THE POWER
DISTRIBUTION BLOCK.

FOR DUAL AIR MODELS VH1620E, VHVA1620E:

These units are supplied with a flexible power cord, according to the specification placed with the
original order, which specified either single-phase or three-phase operation. No internal field
connection is necessary. All internal connections are complete. Connect the power cord to the
proper power receptacle. (see diagram below).

Note: If a different power cord is required than supplied, the correct power cord must be obtained
from a factory authorized service agent. Only an authorized service agent is to replace a power
cord.

FOR DUAL AIR MODELS VH1828E, VHVA1828E:

a)

Remove the cover from the Power Distribution Box Panel ( on right side when

under the control box

facing front of unit).

b)

Locate the 4-pole Power Distribution Terminal Block mounted in the Power Distribution Box.

c)

Install the proper strain relief for the utilizing the knock-out hole

PERMANENT CONNECTION

provided. The strain relief should be securely fastened.

d)

Supply the proper conduit to the conveyor oven and connect through the strain relief. Connect
properly-sized, copper-only conductorwires (rated 90°C) to the Power DistributionTerminal Block in
accordance with the schematic shown on the rating plate, as well as the wiring diagram provided.
NOTE: For three-phase connections, if any “High Voltage Leg” conductor is present, it be
mounted to L3 Replace thecover and fasten securely with removedscrews.

ONLY.

MUST

SINGLE-PHASE CONNECTION

G

G4

L3

L2

5
R (BROWN)
L2

L2

4

A

FIELD WIRING

L2

L1

SERVICE CONNECTIONS

6-50P

E(BROWN)

FACTORY WIRING

TO INTERNAL CIRCUITS

NEMA SPECS.

7

THREE PHASE CONNECTION

FIELD WIRING

G

L3

L2

L1

G4

E(BROWN)
R (BROWN)

L2

5

L2
L2

4
A

SERVICE CONNECTIONS

1620E 3 PHASE1620E 1 PHASE

L15-30P

FACTORY WIRING

TO INTERNAL CIRCUITS

6. SYSTEM CHECK

a)

Insure that the conveyor belt assembly is installed correctly, with the drive-shaft pin fitting firmly into
the coupling that protrudes from the Power Control Box gearmotor output shaft. Visually check that
the belt is flatand parallelto thecountertop surface. If the beltis not parallel to the countertop, it may
be necessary to re-align the gearmotor output shaft to the conveyor belt drive shaft pin. Follow this
procedure:

DISCONNECT THE POWER SUPPLY BEFORE SERVICING COMPONENTS INSIDE

1.

EITHER OF THE CONTROL BOXES. SERIOUS INJURY, INCLUDING DEATH, MAY
OCCURIF CONTACTIS MADE TOINCOMING POWER.

2. Re-aligningthe coupling/ driven-shaft pin requiresopening thePower Control Boxdoor.

3. Inserta hex-head nut-drivertool to loosen the (4) screws that fasten the gearmotorto the box
sidepanel.

4. Re-align the coupling to the conveyor belt drive shaft pin. If this is done properly, the driven-
shaftpin will fit snuggly intothe slot of the gearmotorcoupling.

5. When alignment is correct, re-tighten the (4) screws at the gearmotor before closing the
door.

b)

The conveyor belt is capable of traveling either Left-to-Right (standard), or Right-to-Left (optional).
Direction of travel is determined by looking at the conveyor oven from the front of the unit. Direction
of travel is controlled by a Reversing Switch that is located inside the control box containing the
gearmotor. If the directionof travel needsto bereversed, follow thisprocedure:

NOTE:
THE CONVEYOR OVEN.
CAUSING THE CONVEYOR BELT TO STOP MOVING. THE GEARMOTOR WILL NEED TO BE
REPLACEDDUE TO INTERNALSTRUCTURAL DAMAGE.

CHANGE THE REVERSING SWITCH ONLY WHEN POWER IS DIS-CONNECTED TO

OTHERWISE,FATALDAMAGE WILL OCCUR TO THE GEARMOTOR,

DISCONNECT THE POWER SUPPLY BEFORE SERVICING COMPONENTS INSIDE

1.

EITHER OF THE CONTROL BOXES. SERIOUS INJURY, INCLUDING DEATH, MAY
OCCURIF CONTACTIS MADE TOINCOMING POWER.

2. Reversing theconveyor belt requiresopening the PowerControl Boxdoor.

3. Locate a small rocker switch mounted just inside the control box, either black or orange in
color. Twowires areconnected to it.

4. Changethe switch positionto theopposite setting. No other changesare necessary.

5. Close and securelyfasten the door.

6. Re-connectpower to theunit.

CONVEYOR BELT
FITS INTO UNIT
FROM FRONT

HINGED

FRONT DOOR

DRIVE SHAFT
PIN ALIGNS
WITH COUPLING
OF GEARMOTOR

CRUMB PANS MOUNT
IN CONVEYOR FRAME

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Remove the front door and verify the proper orientation of the upper air return shield.

c) The plenum

fingersare identical,so any fingercan be mountedin anylocation.

REMOVABLE
PLENUM "FINGERS"
ASSEMBLY

ALL FOUR IDENTICAL

HINGED

FRONT DOOR

UPPER AIR
RETURN SHIELD

INTERNAL FIXED
AIR PLENUM
ASSEMBLIES

END SLOTS TOWARDS

HINGED DOOR

LOWER AIR
RETURN SHIELD
ASSEMBLY

d)

Secure the (4) outer side panels to the main frame assembly using the ¼-turn fasteners that are
attached to these panels. Mount these side panels AFTER the conveyor has been properly
installed. (See above).Adjust the outer baffles UP / DOWN until they are in the correct position to
allow product to enter and exit with minimal vertical clearance. This will reduce the amount of heat
lostout thesides of the cook chamber.

HANGER PINS
(ATTACHEDTO
UPPER COVER )

UPPER COVER
(LEFTSIDE)

LOWER COVER

(LEFTSIDE)

ADJUSTABLE BAFFLE

1/4-TURN FASTENERS
(2) TOP & (2) BOTTOM
( CAPTIVE T O COVER )

UPPER COVER
( RIGHT SIDE )

LOWER COVER
( RIGHT SIDE )

ADJUSTABLE
BAFFLE

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7. INITIAL STARTUP

a)

Focus on the angled Electric Control Box containingthe Main Switch (GREEN rocker type, lighted).
The VHVA-Series oven is shown, which contains (5) adjustable knobs for blowers, temperature
controls, and conveyor belt speed. VH-Series ovens only have (3) adjustable knobs that control
temperature and conveyor belt speed. Two indicator lights are mounted to show when HEAT is
beingadded tothe system.

MAIN SWITCH ON (I) OFF (0)

TOP TEMPERATURE READY
INDICATOR LIGHT (HEAT)

TOPAIR VELOCITY SPEED
CONTROL CW=FASTER

CONVEYOR BELTSPEED
CONTROL CW=SLOWER

BOTTOMAIR VELOCITYSPEED
CONTROL CW=FASTER

ELECTRIC CONTROLBOX

BOTTOM TEMPERATURE READY
INDICATOR LIGHT (HEAT)

1) Flip ON the Main Switch. The switch should light up when ON ( ), and be dark when

O

OFF( ). Normal warm-up time is 20 -30 minutes for maximum temperature. Lower

UPPER TEMPERATURE
CONTROL CW=HOTTER

LOWER TEMPERATURE
CONTROL CW=HOTTER

I

temperaturesettings will takeless time.

IF THE MAIN SWITCH IS TURNED OFF DURING INITIAL START-UP, LEAVE UNIT OFF

2)

FOR AT LEAST 15 SECONDS TOALLOW THE AIR VELOCITY CONTROLS TO RESET.
TOGGLING THE SWITCH RAPIDLY (ON/OFF) WILL STALL THE BLOWER MOTORS
AND ALLOW THE HEATERS TO COME ON EVEN THOUGH NO AIR WILL BE MOVING.
THISCAN DAMAGETHE UNIT.

3) Turn the Air Velocity Speed Controls to MAX (full Clockwise rotation) and listen for the
airvelocity speedto increase.

4) Set the Temperature Controls to MAX (full Clockwise rotation). The Indicator Lights will
illuminate because there is not sufficient heat in the oven. The lights tell you that the heaters
are ON.

5) Reduce the blower speed by turning the knob half-way (Counter-clockwise, until indicator
markon theknob is pointingstraight UP).

6) Turnthe temperature control knobs to 350°F. Aseach chamber (upper andlower) reachthis
temperature, the indicator lights will cycle ON and OFF, verifying that the heaters are
operatingproperly in responseto heatdemand.

7) As you become familiar with the oven, you will set the Topand BottomTemperature Controls
to different settings, according to your cooking requirements. As the oven temperatures
vary, the Indicator Lights will turn ON and OFF as the heaters respond to the cooking
process.

) Gradually turn the conveyor belt control Counter-clockwise and verify that the conveyor belt

8

moves faster and faster. Repeat this process, turning the knob Clockwise, verifying that the
conveyorbelt moves slower.

NOTE: AT SPEED SETTINGSABOVE 10 (10-minute cook time), IT MAYBE HARD TOTELL THE BELT
IS MOVING. PLACEAPAN ONTHEBELTTOOBSERVETHAT IT MOVESINTOTHE COOK CHAMBER.

10

8. SHUTDOWN

The conveyor oven is supplied with a special   that helps cool the oven quickly
once the unit has been shut OFF. This feature performs the following functions when the Main Switch is
turnedOFF atthe end of the day:

a) Theblowers keeprunning to re-circulateair through theair chambers
b) Theheaters shutOFF.
c) The conveyorbelt stopsmoving.
d) Once the oven has cooled down to a factory pre-set temperature,the blowersshut OFF. The

ovenis nowcompletely OFF.

NOTE: TO ACCELERATE THE COOLING OF THE OVEN, OPEN THE FRONT DOOR TO ALLOW
COOLERAIR INTOTHE SYSTEM.

NOTE: IF THE MAIN SWITCH IS TURNED BACK ON WHILE THE UNIT IS COOLING DOWN, THE
HEATERS AND CONVEYOR BELT WILL RE-ENGAGE TO BEGIN STANDARD COOKING
OPERATION. THIS IS NORMAL AND WILL NOT DAMAGE THE OVEN. HOWEVER, THE UNIT WILL
NEVERGET HOT ENOUGHTO COOK IFTHE FRONTDOOR IS OPEN.

COOL-DOWN CIRCUIT

NOTE:This pre-settemperatureis notadjustable.

9. SPECIAL FEATURES

Your new conveyor oven has been built with numerous enhancementsto add flexibility and simplicity to
yourcooking operation. The conveyor ovensare built in two versions:

VARIABLE HEAT/VARIABLE AIR

VARIABLE HEAT/FIXED AIR

Thefollowing special features :

A. INDEPENDENT TOP AND BOTTOM HEAT. Different temperature settings can be set for

bothtop andbottom heat zones.

B. VARIABLE-SPEEDCONVEYOR BELT

C. FIELD-REVERSIBLECONVEYOR BELTTRAVEL

D. FRONT-REMOVABLECONVEYOR BELT. No need toslide thebelt assembly outthe side.

E. INDEPENDENTTOPAND BOTTOMOUTER SIDE COVERS. Makes it possible to remove

conveyorbelt from the front.

F. SYMMETRICAL OUTER COVERS (DUAL AIR 1828E ONLY). Top and bottom outer side

coverscan mounton either side.

G. EASE IN CLEANING. This is accomplished by easily removable components for access to

thecook chamber, air plenumfingers, and conveyorbelt assembly.

AREFOUND IN BOTH VERSIONS

VARIABLE HEAT/VARIABLE AIR

The unithas this additionalfeature.

VARIABLE-SPEED TOP AND BOTTOM AIR VELOCITY. This allows for maximum flexibility in
controllingthe cooking environment,as some food products require lesstop airthan others.

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10. CLEANING

CAUTION: THE CONVEYOROVEN CONTAINS ELECTRICALCOMPONENTS. TURN OFFTHE OVEN
ANDDISCONNECT THE POWERBEFORE CLEANING BEGINS.

DONOT CLEANTHE CONVEYOR OVENWITHAWATER JET.

WEEKLYCLEANING:

Oven Exterior: CLEAN ONLY WHEN THE OVEN IS COLD.

of stainless steel.

Deposits of baked-on splatter and grease, or discoloration may be removed by using any commercial
cleaner recommended for stainless steel. Always rub with the grains and apply very light pressure.

Rinsewith aMOIST,NOT SOAKING, cloth.

Oven Interior: CLEAN ONLY WHEN THE OVEN IS COLD.

(cookchamber) is of aluminized steel,and requires carenot toover-clean and scratchthe surface.

CAUTION: DO NOT USE OVEN CLEANERS, CAUSTIC SOLUTIONS OR MECHANICAL MEANS
BECAUSETHESE WILLDAMAGE THE ALUMINIZEDSURFACES

and cleaners that meet national and/or local codes. Clean the walls of the cook chamber with a mild
soapand watersolution.

To clean the interior of the conveyor oven, it is necessary to remove the front door, the (4) outer sides
panels,the conveyor beltassembly, andthe (4) air plenum fingers.(See page 9.)

ConveyorBeltAssembly

1. Remove crumb pans.

2. Remove plenum fingerassembliesand disassemblefor cleaning.

Removeconveyor belt assembly.

Useonly adamp cloth.

Standard constructionof the exterioris

Standard construction of the interior

. Use only thedetergent solutions

1. CONVEYOR BELT STILL MOUNTED IN OVEN:

NOTE: USE CARE IF CLEANING THE CONVEYOR BELT WHILE IT IS STILL MOUNTED IN
THE OVEN. EXCESSIVE FORCE MAY PRODUCE AN OVERLOAD CONDITION THAT
COULD DAMAGE THE GEARMOTOR AND CAUSE THE OVEN TO BE RENDERED UN-
USABLE.

Using a plastic abrasive pad, wipe the conveyor belt in a back-and-forth motion to remove
baked-on product. Wipe clean with a hot, damp cloth.

2. CONVEYOR BELT REMOVED FROM OVEN:

Using a plastic abrasive pad, wipe the conveyor belt in a back-and-forth motion to remove
baked-on product. Wipe clean with a hot, damp cloth.

NOTE: IT IS NOT NECESSARY TO REMOVE THE BELT FROM THE FRAME ASSEMBLY FOR
CLEANING.

3. Check the belt links for any sign of damage. If any links are bent, use a needle-nose pliers to
repairprior to re-installationinto the unit.

Plenum Fingers

The conveyor oven contains (4) plenum fingers that direct air onto the product surface while
cooking. This 3-piece assemblycomes apart forcleaning, as shownbelow:

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AIR PLENUM FINGER ASSEMBLY

Outer Perforated

Panel

(Stainless Steel)

Although symmetrical
in design, inner panel

must have flanges

facing up as shown

Main Panel

(Aluminized Steel)

Inner Perforated

Screen

(Stainless Steel)

The Outer Perforated panel is locked into place through a friction fit to the Main panel. This method
of fastening also captures the Inner panel, holding it in place. The Outer panel slides off the Main
panel, exposing the perforated Inner panel. The Inner panel is symmetrical in design, and may be
placed in either direction, as long as the outer flanges are pointing as shown in the figure

UPWARD

above.

The Inner and Outer panels are made of stainless steel, and therefore may be exposed to strong
cleaners to remove baked-on grease, etc. Overnight soaking in a hot cleaning solution will improve
thecleaning process.

The Main panel is made of aluminized steel like the main cook chamber, and thus requires the same
level of care to retain its integrity. Follow the same precautions as mentioned above for the main
cookchamber.

11. OPERATOR MAINTENANCE

WARNING DANGER DISCONNECT THE POWER SUPPLY BEFORE SERVICING OR CLEANING
THE OVEN. SERIOUS INJURY, INCLUDING DEATH, MAY OCCUR IF CONTACT IS MADE WITH
INCOMINGPOWER.

Duringnormal operation of the oven,lubrication is notrequired.

To achieve maximum efficiency,keep the oven clean. How you maintainyour oven will determine how long
it lasts.

If the ovenfails to operate, perform thefollowing inspections BEFOREcallingan authorizedservice agent:

:

13

1. Check to see ifthe maincircuit breaker isON atthe breaker panel.

.

2. Check the (2) 5-amp fuses located in the bottom of the Power Control Box

IF FUSES ARE BAD, REPLACE ONLY WITH IDENTICAL FUSES. DO NOT
SUBSTITUTE HIGHER VALUE FUSES, AS THIS MAY NULLIFY NEEDED PROTECTION
FORTHE INTERNALELECTRICAL COMPONENTS.

3. Check that the Main Switch is ON. If operating properly, the rocker switch will be lighted

whenON.

4. Check the setting of the temperature control thermostats (knobs). If operating properly,they

will activate theamber indicatorlightsas youturn theknobs backand forth, calling for heat. It
is very unlikelythat the lightwill burnout.

5. If there is noair blowing,check the following:

i. RESET

ii.

DUALAIR MODELVHVA-SERIES

for at east15 seconds and then turning it back ON. This resets the blower speed
controls. If this is not successful, turn off the wall circuit breaker for one minute and
thenturn iton again.

DUAL AIR MODEL VH-SERIES WARNING

section, open the Power Control Box and locate the overload relay (above
gearmotor). . TrytheMain Switchagain.

1. NOTE:

PUSHIN THERESET BUTTON

The Overload Relay is both a current limiting and a thermal

device

overload relay shuts the motor(s) OFF if there is excessive current going to
the motor(s), or if excessive heat builds up in the overload relay due to an
overload condition. Because it takes time for the relay to cool down, do not
assume that there is another problem IF pushing the RESET button doesn't
accomplish the task Both settings,

notoverheated

, meaning that if one or both of the blower motors get jammed, the

, must becorrect for properoperation.

: theunit by turningthe MainSwitch OFF

: Observing the at the beginning of this

RESET button pushed IN & overload

CAUTION

:

If the conveyor belt does not move, check to see that the coupling setscrew is tight on the

6.

gearmotoroutput shaft.

If the oven still does not operate, turn OFF the Main Switch and disconnect the power supply to the
unit(if possible). Contactthe factory, factory representative,or an authorized serviceagency.

ALL SERVICING SHOULD BE PERFORMED ONLY BY A FACTORY AUTHORIZED SERVICE
TECHNICIANORAGENT

.

12. RATING PLATE

A copy of the rating plate is shown here for reference.

MODEL VH-SERIES MODEL VHVA-SERIES

14

13. CONVEYOR REMOVAL

Extensive Engineering went into designing your oven for ease of cleaning. One SPECIAL
FEATURE is the ability to remove the conveyor belt assembly straight out the font of the oven.
Followthis procedure,usingthe diagramprovided: (See drawingbelow)

a) Remove any extension trays present, rotating them upwards to clear the conveyor frame.

Flangeson thetrays hook aroundthe ends of the frame.
b) Remove thetwo crumb pans.
c) Remove the upper outer side covers, which have the adjustable baffles attached with pins.

The covers are held in place with hand-twist fasteners. Turn these fasteners 90°

counterclockwiseto loosen, and90° clockwiseto tighten.
d) It isnot necessaryto remove theouter lower sidecovers.

NOTE:

On Dual Air Models VH-, VHVA Series ovens, the outer upper and lower covers

1828E

aresymmetrical, and can be mountedon either sideof theoven.

e) Open thefront hinged door.
f) Carefully supporting both right and left sides of the conveyor, lift the front edge slightly and

pulltowards you,watching as thedrive shaft pullsout ofthe gearmotor coupling.

14. CONVEYOR INSTALLATION

Installingthe conveyorbelt assemblyis done in exact reverse order to its removal. The MOST IMPORTANT
POINT is to properly align the drive shaft pin with the gearmotor coupling. If the drive shaft pin must be
wedged into place for installation, the coupling location needs to be adjusted. See Section 6a for this
procedure.

DONOT FORCETHE DRIVE PININTO THE COUPLINGIF THEY DO NOTALIGN.

IF EXTENSION TRAYSARE

IF EXTENSION TRAYSARE
PRESENT, ROTATE THEM
UPWARDSTO REMOVE FROM
CONVEYOR FRAME

UPPER OUTER SIDE
COVER WITH
ADJUSTABLE BAFFLE

PRESENT, ROTATE THEM
UPWARDSTO REMOVE FROM
CONVEYOR FRAME

UPPER OUTER SIDE
COVER WITH
ADJUSTABLE
BAFFLE

15