Bakers Pride VH1620E Installation Manual

INSTALLATION

AND

OPERATING

INSTRUCTIONS

Models: VH1620E, VHVA1620E, VH1828E & VHVA1828E

COUNTERTOP MODEL

ELECTRIC CONVEYOR OVENS

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.

INTENDED FOR OTHER THAN HOUSEHOLD USE

RETAIN THIS MANUAL FOR FUTURE REFERENCE

!!

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.

[phone] Phone [phone] US & Canada
[phone] Fax www.bakerspride.com Web Address

ANSI/NSF4

P/N U4173A 2/08

BAKERS PRIDE OVEN CO., INC.

30 Pine Street

New Rochelle, NY 10801

!!

1

Bakers Pride takes pride in the design 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 words are defined as follows:

DANGER: This symbol warns of imminent hazard which will result in serious injury or death.

!

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

!

serious injury or death.

CAUTION: This symbol refers to a potential hazard or unsafe practice, which may result in minor or

moderate injury or product or property damage.

!

NOTICE: This symbol refers to information that needs special attention or must be fully understood

even though not dangerous.

!

GENERAL INFORMATION

THIS MANUAL SHOULD BE RETAINED FOR FUTURE REFERENCE

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

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

!

operating instructions are clearly posted near each unit so that anyone using the equipment will
use it correctly and not injure themselves or harm the equipment.

WARNING: Check the data plate on this unit before installation. Connect the unit only to the voltage

!

!

and frequency listed on the data plate. Connect only to 1 or 3 phase as listed on the data plate.

WARNING: Electrical and grounding connections must comply with the applicable portions of the
national electrical code and/or other local electrical codes.

!

!

!

!

!

!

!

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

!

power plug, indicating that you are working on the circuit.

WARNING: Install per the spacing requirements listed in the installation section of this manual. We
strongly recommend having a competent professional install the equipment. A licensed electrician
should make the electrical connections and connect power to the unit. Local codes should always

!

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

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

!

circuit, protected by a fuse or circuit breaker of proper size and rating. Canadian installation must
comply with the Canadian Electrical Code, CSA C22.2, as applicable

2

!

!

!

WARNING: A factory authorized agent should handle all maintenance and repair. Before doing any

!

maintenance or repair, contact Bakers Pride.

!

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

!

surface.

WARNING: An earthing cable must connect the appliance to all other units in the complete
installation and from there to an independent earth connection.

!

NOTICE: The unit when installed, must be electrically grounded and comply with local codes, or in

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

!

Canadian installation must comply with CSA-STANDARD C.22.2 Number 0 M1982 General
Requirements-Canadian Electrical Code Part II, 109-M1981- Commercial Cooking Appliances.

WARNING: SHOCK HAZARD - De-energize all power to equipment before cleaning the

!

equipment.

NOTICE: This product is intended for commercial use only. Not for household use.

!

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

Fire Protection Association, Inc. states in its NFPA96 latest edition that local codes are “Authority
Having Jurisdiction” when it comes to requirements for installation of equipment. Therefore,

!

installation should comply with all local codes.

IMPORTANT FOR FUTURE REFERENCE

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

!

!

!

!

!

!

Notes:

Model Number Serial Number Date Purchased

3

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. VHVA1620E Schematic, 208, 220 or 240VAC, 3 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

4

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 has been 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 to installation.

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 Conveyor Oven must be installed in a well-ventilated area.
NOTE: Attached rear rubber bumpers must not be removed and can contact a rear wall if 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 the back of the unit.) S e e
rating plate attached to the control box door panel.

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 Section 1 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 is adjustable to accommodate variations in 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.

5

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 oven has
its own power disconnect. Make sure
ALL main switches are OFF before any
cleaning or maintenance is performed.”

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: Normal cooking operations may result in the production of smoke or fumes and may

cause nausea and dizziness. Be sure the oven is placed in a well-ventilated area.

6

!

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: FOR 3 PHASE UNITS ONLY: VERIFY VOLTAGE OF EACH LEG. IF ANY LEG HAS A
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 (under the control box on right side when

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 PERMANENT CONNECTION utilizing the knock-out hole

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 conductor wires (rated 90°C) to the Power Distribution Terminal 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 MUST be
mounted to L3 ONLY. Replace the cover and fasten securely with removed screws.

SINGLE-PHASE CONNECTION

G

G4

L3

L2

5
R (BROWN)
L2

L2

4

A

FIELD WIRING

L2

L1

SERVICE CONNECTIONS

E (BROWN)

FACTORY WIRING

TO INTERNAL CIRCUITS

THREE PHASE CONNECTION

FIELD WIRING

G

L3

L2

L1

G4

E

(BROWN)

R (BROWN)

L2

5

L2
L2

4
A

SERVICE CONNECTIONS

FACTORYWIRING

TO INTERNAL CIRCUITS

6-50P

NEMA SPECS.

1620E 3 PHASE1620E 1 PHASE

L15-30P

7

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 flat and paralleltothecountertopsurface. If the belt is 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
OCCURIFCONTACT IS MADE TOINCOMINGPOWER.

2. Re-aligningthecoupling / driven-shaftpinrequiresopening the PowerControlBoxdoor.

3. Insert a hex-headnut-drivertoolto loosen the (4) screws that fasten the gearmotortothebox
sidepanel.

4. Re-align the coupling to the conveyor belt drive shaft pin. If this is done properly, the driven-
shaftpinwill fit snuggly into theslotofthe gearmotor coupling.

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 thedirectionoftravel needs to bereversed,followthis procedure:

NOTE:
THE CONVEYOR OVEN.
CAUSING THE CONVEYOR BELT TO STOP MOVING. THE GEARMOTOR WILL NEED TO BE
REPLACEDDUETO INTERNALSTRUCTURALDAMAGE.

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
OCCURIFCONTACT IS MADE TOINCOMINGPOWER.

2. Reversingtheconveyor belt requiresopeningthePower Control Box door.

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

4. Change theswitchposition to the oppositesetting. Noother changes are necessary.

5. Close and securelyfastenthe door.

6. Re-connectpowertothe unit.

CONVEYOR BELT
FITS INTO UNIT
FROM FRONT

HINGED

FRONT DOOR

DRIVE SHAFT
PIN ALIGNS
WITH COUPLING
OF GEARMOTOR

CRUMB PANS MOUNT
IN CONVEYOR FRAME

8

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

c) The plenum

fingersareidentical,so any finger canbemountedin any location.

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
lostoutthesidesof 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

9

7. INITIAL STARTUP

a)

Focus on the angled Electric Control Box containing the 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
beingaddedtothe system.

MAIN SWITCH ON (I) OFF (0)

TOP TEMPERATURE READY
INDICATOR LIGHT (HEAT)

TOPAIR VELOCITY SPEED
CONTROL CW=FASTER

CONVEYOR BELT SPEED
CONTROL CW=SLOWER

BOTTOMAIR VELOCITY SPEED
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

temperaturesettingswill take less time.

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

2)

FOR AT LEAST 15 SECONDS TO ALLOW 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.
THISCANDAMAGETHE UNIT.

3) Turn the Air Velocity Speed Controls to MAX (full Clockwise rotation) and listen for the
airvelocityspeedto 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
markontheknob is pointing straightUP).

6) Turnthetemperaturecontrolknobs to 350°F. Aseachchamber(upperandlower)reachthis
temperature, the indicator lights will cycle ON and OFF, verifying that the heaters are
operatingproperlyin response to heat demand.

7) Asyoubecomefamiliarwiththeoven,you will set the Top and Bottom Temperature 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.

) Graduallyturn 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
conveyorbeltmovesslower.

NOTE: AT SPEED SETTINGSABOVE 10 (10-minute cook time), IT MAYBE HARD TO TELLTHE BELT
IS MOVING. PLACEAPAN ON THEBELTTO OBSERVETHAT ITMOVESINTO THECOOKCHAMBER.

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
turnedOFFatthe end of the day:

a) Theblowerskeeprunning to re-circulate airthroughthe air chambers
b) TheheatersshutOFF.
c) The conveyor belt stopsmoving.
d) Once theovenhascooleddown to a factory pre-set temperature, the blowersshutOFF. The

ovenisnowcompletely OFF.

NOTE: TO ACCELERATE THE COOLING OF THE OVEN, OPEN THE FRONT DOOR TO ALLOW
COOLERAIR INTO THESYSTEM.

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
NEVERGETHOTENOUGH TO COOKIFTHEFRONT DOOR IS OPEN.

COOL-DOWN CIRCUIT

NOTE:Thispre-settemperature is notadjustable.

9. SPECIAL FEATURES

Your new conveyor oven has been built with numerous enhancements to add flexibility and simplicity to
yourcookingoperation. The conveyorovensarebuilt in two versions:

VARIABLE HEAT/VARIABLE AIR

VARIABLE HEAT/FIXED AIR

Thefollowingspecialfeatures :

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

bothtopandbottom heat zones.

B. VARIABLE-SPEED CONVEYORBELT

C. FIELD-REVERSIBLE CONVEYORBELT TRAVEL

D. FRONT-REMOVABLE CONVEYOR BELT. No need to slidethebeltassembly out the side.

E. INDEPENDENTTOPAND BOTTOM OUTER SIDE COVERS. Makes it possible to remove

conveyorbeltfromthe front.

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

coverscanmounton either side.

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

thecookchamber, air plenum fingers, andconveyorbelt assembly.

AREFOUNDINBOTH VERSIONS

VARIABLE HEAT/VARIABLEAIR

The unithasthisadditional feature.

VARIABLE-SPEED TOP AND BOTTOM AIR VELOCITY. This allows for maximum flexibility in
controllingthecookingenvironment, as somefoodproducts require lesstopairthan others.

11

10. CLEANING

CAUTION: THE CONVEYOR OVEN CONTAINS ELECTRICAL COMPONENTS. TURN OFF THE OVEN
ANDDISCONNECTTHE POWER BEFORE CLEANINGBEGINS.

DONOTCLEANTHE CONVEYOR OVENWITHAWATERJET.

WEEKLY CLEANING:

Oven Exterior: CLEANONLY WHEN THE OVEN IS COLD.

of stainlesssteel.

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.

RinsewithaMOIST, NOT SOAKING, cloth.

Oven Interior: CLEAN ONLY WHEN THE OVEN IS COLD.

(cookchamber)isof aluminized steel, andrequirescare not to over-cleanandscratchthe surface.

CAUTION: DO NOT USE OVEN CLEANERS, CAUSTIC SOLUTIONS OR MECHANICAL MEANS
BECAUSETHESEWILLDAMAGE THE ALUMINIZED SURFACES

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

To clean the interior of the conveyor oven, it is necessary to remove the front door, the (4) outer sides
panels,theconveyor belt assembly, and the(4)airplenum fingers. (See page9.)

ConveyorBeltAssembly

1. Remove crumb pans.

2. Remove plenum fingerassembliesand disassemble forcleaning.

Removeconveyorbelt assembly.

Useonlyadampcloth.

Standard construction of the exterior is

Standard construction of the interior

. Use only the detergentsolutions

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
repairpriorto re-installation intotheunit.

Plenum Fingers

The conveyor oven contains (4) plenum fingers that direct air onto the product surface while
cooking. This3-piece assembly comesapartfor cleaning, as shownbelow:

12

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. Overnightsoakingin a hot cleaning solution will improve
thecleaningprocess.

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.

Duringnormaloperationof the oven, lubricationisnot required.

To achieve maximum efficiency,keeptheovenclean. How you maintain your oven will determine how long
it lasts.

If theovenfailsto operate, performthefollowinginspections BEFORE callinganauthorizedservice agent:

:

13

1. Check to see if themaincircuitbreaker is ON atthebreakerpanel.

.

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 VALUEFUSES,AS THIS MAY NULLIFY NEEDED PROTECTION
FORTHEINTERNALELECTRICALCOMPONENTS.

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 activatetheamberindicator lights as you turntheknobsback and forth, calling for heat. It
is veryunlikelythat the light will burnout.

5. If there is no airblowing,checkthe following:

i. RESET

ii.

DUALAIR MODEL VHVA-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
thenturnitonagain.

DUAL AIR MODEL VH-SERIES WARNING

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

1. NOTE:

PUSHINTHE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

, mustbecorrectfor proper operation.

: the unit by turning the MainSwitchOFF

: 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.

gearmotoroutputshaft.

If the oven still does not operate, turn OFF the Main Switch and disconnect the power supply to the
unit(ifpossible). Contact the factory, factoryrepresentative,or an authorizedserviceagency.

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.
Followthisprocedure,using the diagram provided:(Seedrawing below)

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

Flangesonthetrays hook around theendsofthe frame.
b) Remove the two crumbpans.
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°

counterclockwisetoloosen, and 90° clockwisetotighten.
d) It is not necessary toremovetheouter lower side covers.

NOTE:

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

1828E

aresymmetrical,andcan be mounted oneithersideof the oven.

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

pulltowardsyou,watching as the driveshaftpulls out of the gearmotorcoupling.

14. CONVEYOR INSTALLATION

Installingtheconveyorbeltassemblyis done in exact reverse order to its removal.TheMOSTIMPORTANT
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.

DONOTFORCETHE DRIVE PIN INTOTHECOUPLING IF THEYDONOT ALIGN.

IF EXTENSIONTRAYSARE

IF EXTENSIONTRAYSARE
PRESENT, ROTATE THEM
UPWARDSTO REMOVE FROM
CONVEYOR FRAME

UPPER OUTERSIDE
COVER WITH
ADJUSTABLE BAFFLE

PRESENT, ROTATE THEM
UPWARDSTO REMOVE FROM
CONVEYOR FRAME

UPPER OUTERSIDE
COVER WITH
ADJUSTABLE
BAFFLE

15