Star Manufacturing UM1833A Installation Manual

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ELECTRIC

CONVEYOR OVEN

MODEL

UM1833A-208V
UM1833A-240V
UM1850A-208V
UM1850A-240V

Installation and

Operation

Instructions

2M-Z9844 Rev. D 10/28/2010

UM1850A

2

These symbols are intended to alert the user to the presence of
important operating and maintenance instructions in the manual
accompanying the appliance.

RETAIN THIS MANUAL FOR FUTURE REFERENCE

NOTICE

Using any part other than genuine Star factory supplied parts relieves the
manufacturer of all liability.

Star reserves the right to change specications and product design without

notice. Such revisions do not entitle the buyer to corresponding changes,
improvements, additions or replacements for previously purchased
equipment.

Due to periodic changes in designs, methods, procedures, policies and

regulations, the specications contained in this sheet are subject to change
without notice. While Star International Holdings Inc., Company exercises
good faith efforts to provide information that is accurate, we are not

responsible for errors or omissions in information provided or conclusions

reached as a result of using the specications. By using the information
provided, the user assumes all risks in connection with such use.

MAINTENANCE AND REPAIRS

Contact your local authorized service agent for service or required maintenance.
Please record the model number, serial number, voltage and purchase date in the area below and have it ready when

you call to ensure a faster service.

SAFETY SYMBOL

Model No.

Serial No.

Voltage

Purchase Date

Business

8:00 am to 4:30 p.m. Central Standard Time

Hours:
Telephone: [phone] Local [phone]
Fax: [phone] Local [phone]

E-mail [e-mail]

[e-mail]

[e-mail]

Website: www.star-mfg.com

Service Help Desk

Authorized Service Agent Listing

Reference the listing provided with the unit

or
for an updated listing go to:

Website: www.star-mfg.com
E-mail [e-mail]
Telephone: [phone] Local [phone]

Mailing Address: Star International Holdings Inc., Company

10 Sunnen Drive
St. Louis, MO 63143
U.S.A

SPECIFICATIONS

B

A = 51.2 (1300)
A1= 50.0 (1270)
A2= 33.0 (838)

B = 30.4 (772)

C = 16.0 (406)
C1= 20.0 (508)

A1

10.6 [269]

21.0 [533]

22.0 [559]

STACKED DIMENSION

= C + C1

UM1850

24.1 [612]

UM1833 WITH

INFEED/EXIT SHELVES

A

8.2

[208]

CONTROL BOX

DOOR OPEN

14.5

[369]

END VIEW FRONT VIEWS

TOP VIEW

1833 W\OUT

SHELVES SHOWN

A2

14.5 [369]

11.4 [291]

2.0 [51]

00

0

UM1833A-208V, UM1833A-240V

Rating/Connection: 6,400 Watts (6,000 element), 32/29 Amps at 208/240V

NEMA 6-50 plus with six foot oil-resistant cord

Electrical Supply: Separate 50 Amp 208/240VAC, single phase, 50/60 Hz service per Oven
Approximate Weight: (1833 Oven with Legs): Installed - 180 Lbs (81.8 kg), Shipping - 210 Lbs (95.5 kg)

Dimensions: Width: 51.2" (130.0 cm) - Oven with Shelves

Depth: 30.4" (77.2 cm)
Height: 20.0" (50.8 cm) - Single Oven with Legs

36.0" (91.4 cm) - Double Oven with Legs

Recommended Minimum Clearances:

Rear of Oven to Wall 0" (0 cm)
Conveyor Extensions to Wall 6" (15.2 cm)

UM1850A-208V, UM1850A-240V

Rating/Connection: 6,400 Watts (6,000 element), 32/29 Amps at 208/240V

NEMA 6-50 plus with six foot oil-resistant cord

Electrical Supply: Separate 50 Amp 208/240VAC, single phase, 50/60 Hz service per Oven
Approximate Weight (1850 Oven with Legs): Installed - 210 Lbs (95.5 kg), Shipping - 240 Lbs (109.1 kg)

Dimensions: Width: 50.0" (127.0 cm)

Depth: 30.4" (77.2 cm)
Height: 20.0" (50.8 cm) - Single Oven with Legs

36.0" (91.4 cm) - Double Oven with Legs

Recommended Minimum Clearances:

Rear of Oven to Wall 0" (0 cm)
Conveyor Extensions to Wall 6" (15.2 cm)

2

GENERAL INFORMATION

This equipment is designed and sold for commercial use only by personnel trained and experienced
in its operation and is not sold for consumer use in and around the home nor for use directly by the
general public in food service locations.

First and foremost, each crate should be examined before signing the Bill of Lading to report any
visible damage by the trucker in transit and to account for the proper number of crates. If there

is apparent damage, arrangements should be made to le a claim against the carrier. Interstate

Commerce
storage facilities should be arranged for the oven(s) if necessary to protect it from outdoor or damp
conditions at all times before installation.

Regulations require that the claim must be initiated by the consignee. Proper and secure

-IMPORTANT-

When you have all the crates unloaded, open the crates and remove all plastic covers.
Inspect at once for concealed damage. If anything appears to be damaged, contact the

appropriate persons immediately to le a damage claim. After completing this inspection,
nish unpacking the oven. Be sure to remove all paper protection and packing material

the unit prior to heating.

from

CAUTION

FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE

VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.

INSTALLATION

The ovens are equipped for the voltage indicated on the nameplate mounted on the rear of the control
box. They will operate on alternating current (AC) only. A cord is provided with a NEMA 6-50 plug. A
matching receptacle with 50A supply must be provided.

WARNING

DO NOT CONNECT TO DIRECT CURRENT (DC).

The installation of the electric oven should conform to the:

NATIONAL ELECTRIC CODE AND ALL LOCAL ELECTRIC CODES AND
ORDINANCES AND THE LOCAL ELECTRIC COMPANY RULES AND
REGULATIONS.

PURCHASER'S RESPONSIBILITY

It is the responsibility of the purchaser:

1. To see that the electric services for the oven are installed on site in accordance with the manufacturer's

specications.

2.

To unload, uncrate, and install the oven in its proper location and in accordance with this installation
operation manual.

3. To see that electric services are connected properly by a qualied installer of your choice. All such

connections must be in accordance with applicable code requirements.

4. To arrange for inspection and operation check-out by an authorized service technician. The

warranty becomes effective upon verication of proper installation.

4

IMPORTANT SAFETY INFORMATION

Do not attempt to operate the oven until connection of utility service has been fully inspected by an
authorized service technician or a Star Service Representative. This service is required by Star in

order to assist the purchaser in proper start-up of the oven on site. Please note the specic details on

the Warranty and make certain that service connections are made to proper utility services.

The warranty shall not apply if the oven is started up and operated prior to the utilities and oven being inspected and
check-out made by an authorized service technician or a Star Service Representative.

CAUTION

IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE, OR MAINTENANCE
CAN CAUSE PROPERTY DAMAGE, INJURY, OR DEATH. READ ALL INSTRUCTIONS

THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT.

CAUTION

Minimum clearances must be maintained from all walls and combustible materials.
Minimum clearances for this unit should be 0 inches from the rear (rear bumpers provided
must be in place) and 6 inches from both sides. Keep the oven free and clear of all
combustible material.

CAUTION

Do not obstruct the ventilation holes in the control panels as these provide cooling
air for the controls.

WARNING

The oven is to be operated only on the type of electricity shown on the specication plate.

INSTALLATION INFORMATION

THE INSTALLATION INSTRUCTIONS CONTAINED HEREIN ARE FOR THE USE OF
QUALIFIED INSTALLATION AND SERVICE PERSONNEL ONLY. INSTALLATION OR

SERVICE BY OTHER THAN QUALIFIED PERSONNEL MAY RESULT IN DAMAGE TO THE

AND/OR INJURY TO THE OPERATOR.

OVEN

Qualied installation personnel are individuals, a rm, a corporation, or a company which either in

person or through a representative are engaged in and responsible for:

1. The installation of electrical wiring from the electric meter, main control box, or service outlet to
the electric appliance.

Qualied installation personnel must be experienced in such work, familiar with all

precautions required, and have complied with all requirements of state or local authorities
having jurisdiction.

LOCATION

The well-planned and proper placement of your oven will result in long-term operator
convenience and satisfactory performance.

It is essential that an adequate air supply to the oven be maintained to provide a sufcient
ow of ventilation air. Follow these guidelines:

1. Place the oven in an area that is free of drafts.

2. Keep the oven area free and clear of all combustibles such as paper, cardboard, ammable liquids,

and solvents.

3. Do not place the oven on a curb base or seal to a wall. This will restrict the ow of air and prevent

proper ventilation to the blower motors. This condition must be corrected to prevent permanent
damage to the oven.

4. On all models, tripping of the blower motor's thermal overload device indicates an excessive
ambient temperature at the back of the oven. This condition must be corrected to avoid permanent
damage to the oven.

5

This appliance must be installed on a sturdy
counter or stand using the feet provided
for cleaning clearance. As a minimum, 24"
of clearance on the discharge end of the
oven should be allowed for removal of the
conveyor assembly if the oven is not on a
mobile cart. Also allow room for a service
technician to access the control box door
and the fan motor cover over the rear of the
oven if the oven is not movable.

CAUTION

Any surface the oven is mounted on should have a raised area around the perimeter to
prevent the oven from accidentally sliding off the edge. Serious injury or death could
occur if the oven falls on a person.

CAUTION

Any cart that the oven is mounted on must be deep and wide enough to provide a stable
platform. A cart with a narrow stance could allow the oven to tip over, causing property
damage or serious harm to people.

VENTILATION

Local codes prevail. These are the "authority having jurisdiction" as stated by the National Fire
Protection Association, Inc. in NFPA 96-Latest Edition. For further ventilation information see below.

A ventilation hood may be required to remove heat and cooking odors. The hood and HVAC
installation must meet local codes to gain approval by the authority having jurisdiction. Requirements
may vary throughout the country depending on the location by city, county, and state. Obtain
information from the authority having jurisdiction to determine the requirements for your installation.
Obtain information and review copies of codes or documents that will be used to inspect and approve
your installation. Your ventilation hood supplier and HVAC contractor should be contacted to provide
guidance.

CAUTION

Prevent airow through the cooking tunnel. Air must NOT be directed onto the oven's
front or rear or to the sides of the cooking area. This can cause incomplete or uneven
baking and increased energy consumption.

ELECTRICAL CONNECTION

Before making any electrical connections to this unit, check that the power supply is adequate for the
voltage, amperage, and phase requirements stated on the rating plate. A wiring diagram is included
herewith.

When installed, this appliance must be electrically grounded and its installation must comply with
the National Electric Code, ANSI-NFPA 70, latest version, manufacturer's installation instructions,
and applicable local municipal building codes. In Canada, all electrical connections are to be in
accordance with CSA C22.1 - Canadian Electrical Code Part 1 and/or local codes.

WARNING

This appliance is equpped with a three-prong (grounding) plug for your protection against

shock hazard and should be plugged directly into a properly grounded three-prong

receptacle. Do not cut or remove the grounding prong from this plug.

6

STACKING INSTRUCTIONS

The following instructions should be followed when stacking
more than one unit.

Single Oven (or Bottom) Cart Install:

1. Remove door, conveyor, and nger assemblies.

2. Unbolt unit from shipping crate (2 bolts).

3. Turn unit on front as shown.

4. Thread the four legs into the bottom of the oven.

5. CAREFULLY lift oven upright.

Stacked Oven Install Preparation:

1. Remove door, conveyor, and nger assemblies.

2. Unbolt unit from shipping crate (2 bolts).

3. Turn unit on front as shown.

4. Remove top of lower oven (4 screws total, 2 each front and rear)
and bolt to stacked oven base using 3/8 - 16 bolts.

5. Place top oven on lower unit and re-attach with screws for top of
lower oven.

OPERATING INSTRUCTIONS

DO NOT ATTEMPT TO OPERATE THE OVEN until connection of
utility service and installation has been fully inspected (start-up check­out) by an authorized service technician or a Star Service Technician
in order to assure the oven is properly installed and in working order.

The warranty becomes effective upon verication of proper

installation.

CAUTION

DO NOT WORK AROUND THE CONVEYOR BELT

WITH LONG HAIR, LOOSE CLOTHING, OR DANGLING

JEWELRY. GETTING CAUGHT IN THE BELT COULD
RESULT IN DISMEMBERMENT OR FATAL INJURY.

Unless specied otherwise, conveyor travel is factory set for left to right operation when facing the

front of the oven. If a direction change is required, refer to "DISPLAY INFORMATION," section 3 for
instructions on how to program the controller for a direction change. In addition, the conveyor belt
must be changed to travel in the new direction.

SAFETY OPERATING INSTRUCTIONS

The information contained in this section is provided for the use of qualied operating personnel.
Qualied operating personnel are those who have carefully read the information contained in this

manual, are familiar with the functions of the oven and/or have had previous experience with the
operation of the equipment described. Adherence to the procedures recommended herein will assure
the achievement of optimum performance and long, trouble-free service.

7

Please take time to read the following safety operating instructions. They are the key to the

®

switch to the"OFF" position and wait five minutes.

4) After five seconds, the new numbers will be saved and the oven

decrease TIME or TEMPERATURE. Hold button down for

3) Press the up button (

) to increase or the down button (

) to

hold for four seconds until TIME display goes blank.

1) Press the up and down buttons (

) at the same time,

faster display changes.

will display new settings.

and TEMPERATURE.

2) Press the enter button ( ) to switch between TIME

Adjusting TIME and TEMPERATURE:

After five minutes, retry.

ON

OFF

If burner does not lght in one minute push the power

Push power switch "ON".

To Start:

"HEAT" LIGHT







successful operation of your Ultra-Max Conveyor Oven.

General Safety Tips:

SAFETY TIPS

For your safety, read before operating.

If you smell gas:

1. DO NOT try to light any appliance.

2. DO

3. Use an exterior phone to call your gas supplier

4.

In the event of a power failure:

1. Turn all switches off.

2. DO

NOT touch any electrical switches.

immediately.
If you cannot reach your gas supplier, call

the re department.

NOT attempt to operate the oven until

the power is restored.

1. If the oven needs to be moved for any reason,
the power must be disconnected from the
unit before doing so.

2. DO NOT remove the control box cover unless
the oven is unplugged.

OPERATION

To turn the oven on:

1. Push the power switch to "ON."

2. After the fan begins to build pressure, the
pressure switch will provide power to the
control board to engage the heating element
contactor. You should hear an initial "click"
from the contactor as it begins to heat.

To adjust the time and temperature:

1. Press the DOWN and UP arrows
( ) at the same time. Hold for

four seconds until the TIME display goes
blank.

2. Press the ENTER button (

) to switch

between TIME and TEMPERATURE.

3. Press the UP arrow (

) to increase or the

DOWN arrow ( ) to decrease the TIME or
TEMPERATURE. Hold either button down
for faster display changes.

4. After ve seconds, the new numbers will

be saved and the oven will display the new
settings.

To turn the oven off:

1. Push the power switch to "OFF." The oven
is equipped with a cool-down feature for
motor shaft and bearing protection. This
enables the blower motor(s) to run regardless
of the controller status. The blower(s)
continue to run until the oven cools to a safe
temperature.

8

DISPLAY INFORMATION

When operating the oven, there are three levels of access:

1. Store Level - General employees would know these functions and how to change them. While the
oven is running, enter this mode by holding the DOWN and UP arrows ( ) simultaneously for

four seconds. The TIME display goes blank and the TEMP setpoint is displayed. Adjust with the
DOWN or UP arrows. The ENTER button ( ) toggles between TIME and TEMP. The parameter

that can be adjusted is displayed, the other is blank. When TIME and TEMP are adjusted as

needed, wait ve seconds and SAVE is displayed. The values are accepted and the controller

begins controlling to these new values. The conveyor continues to operate at the same speed
until a new value is accepted. The temperature control output should be OFF during changes.

2. Manager Level - This is a lock so that TIME and TEMP cannot be changed even at
the Store Level. While the oven is running, enter this mode by holding the DOWN and
UP arrows simultaneously for 4 seconds. The TIME display goes blank and the TEMP
setpoint is displayed. Release the UP arrow and continue to hold the DOWN arrow for
an additional 4 seconds. The TEMP display shows LOC as the TIME display shows
nO, which indicates that the TIME/TEMP parameters can be changed after reaching the
STORE level. yES indicates that the parameters cannot be changed even after entering

the STORE level. The LOC setting can be toggled using the ENTER button (

).

ADDITIONAL FUNCTIONS

The conveyor belt direction and the temperature display can be changed on the conveyor oven by

a qualied technician. To change the belt direction, the technician must reverse the motor direction

and rotate the conveyor belt for proper oven function. A technician can also change the temperature
display from Fahrenheit to Celsius. These changes can be made by the technician during the start­up/check-out or at a later date.

ERROR CODES

Error codes will display as ashing text messages for diagnostic purposes. Any temperature or

thermocouple error should turn the temperature output OFF and leave the conveyor running at the
same speed. The belt error should turn the temperature output OFF. The speed error should display
when the motor is unable to settle at the chosen speed. This might occur if a fast speed is chosen
that the motor is unable to spin fast enough to achieve. The speed signal output will remain the same

but the display will ash the error message.

9

BAKE TIME VERSUS TEMPERATURE

BAKE vs. DELIVERY TIME

Time to Delivery changes with product

but Bake Time remains constant

at a steady conveyor speed.

24 (BAKE)

32 (DELIVERY)

40 (DELIVERY)

6:00 (BAKE)

8:00 (DELIVERY)

10:00 (DELIVERY)

1. Bake time is actually conveyor speed and is dened as the time the product is actually in the oven.

This is measured by noting the time when the leading edge of the product enters the oven and
the time the leading edge of the product leaves the oven. This is adjusted by using the conveyor
speed controller.

2. Bake temperature is adjusted by changing the setpoint of the temperature controller to the
desired bake temperature. When the oven reaches the desired temperature, the red dot in the
lower right corner of the temperature display will turn off and on as the controller maintains the
temperature.

3.

When establishing a bake time and temperature for a given product, the general rule shall be as
the bake time increases the bake temperature decreases and the reverse is also true; increase
temperature, decrease time. However, there are limits to the above rule. Going to extremes
will result in a burnt exterior and raw interior or it will result in a very light color but over-baked
product.

4.

Once a good bake has been established, the ne adjustments should be made by holding either

the bake time or bake temperature constant, then varying the other.

CONVEYOR SPEED

Bake Time (Conveyor Speed) - As stated previously, bake time (conveyor speed) is dened as the

amount of time elapsed between the time the leading edge of the product enters the oven and the
leading edge of the product exits the oven. Bake time is controlled by adjusting the digital speed
controller. The setting on the control panel indicates the actual bake time.

Bake time will be the same for any size product.

TIME OF DELIVERY

The time of delivery is the amount of elapsed time between the period when the leading edge of the
product enters the oven and the trailing edge of the product is fully discharged and is ready to be
delivered to the customer.

Time of delivery changes if the product size changes.

Tip: Train yourself not
to pull the product out
of the oven when the
leading edge comes
out. Always wait until
the entire product has
passed under the air
nozzle holes - the
product needs this time
to fully bake.

10

CLEANING INSTRUCTIONS

Follow this recommended cleaning schedule for proper oven performance:

CAUTION

DISCONNECT THE POWER SUPPLY BEFORE SERVICING OR CLEANING THIS OVEN.
SAFEGUARD THE POWER SO IT CANNOT BE ACCIDENTALLY RESTORED. FAILURE TO DO SO
COULD RESULT IN DISMEMBERMENT, ELECTROCUTION, OR FATAL INJURY. THERE IS MORE

ONE POWER SUPPLY CONNECTION POINT WHEN OVENS ARE STACKED, SO MAKE

THAN

SURE THAT ALL SWITCHES ARE IN THE OFF POSITION BEFORE CLEANING OR MAINTENANCE.

No electrical components should be subjected to moisture. It is therefore important that the oven is wiped
down carefully. NEVER throw buckets of water over the oven or subject it to pressure washing from a
hose or a pressure spray. If water or other liquid is spilled on the oven, make sure that none of it has
entered the control box area before switching the oven ON. If in doubt, call your service company.

CAUTION

Adhere to the following warnings when cleaning or maintaining your conveyor oven:

1. The oven must be cool. Do not use power cleaning equipment, steel wool, or wire brushes on
stainless steel surfaces.

2. Do not use a caustic or an alkaline base cleaner on the interior of the oven.

This will ruin the aluminized nish of the oven interior.

3.

When using cleaning solutions, be sure they meet local and national health standards.

DAILY

1. Clean the conveyor belt using a nylon brush. Allow any foreign material to drop into the crumb
pans.

2. Empty and clean the crumb pans. Use a hot water and detergent mix.
Rinse

with clean water.

EVERY MONTH

1. Brush and clean the guard on the motor cooling fan.

2. Unplug the oven.

3. Remove the crumb pans.

4. Remove the conveyor assembly.

5. Unlatch and remove the front door. First remove all Baffles then Finger Assemblies.

See instructions next page.

Clean the oven interior with an appropriate oven cleaner.

6.

7. Clean the conveyor assembly, crumb pans, and other removable components.

Wash in a hot water, detergent mix and rinse with clean water. For difcult cleaning areas, use a

heavy-duty

8. Move the oven and clean under it. Be careful not to damage the oven's electrical cord or plug when
moving.

9.

Reassemble the oven, being certain to include all Finger Assemblies and the Upper & Lower

Bafes.

de-greaser or oven cleaner.

Be certian the Lower Bafe Flange is properly positioned behind the Rear Oven Wall, as well
as the Upper Bafe is in position against the Upper Bafe Seat, as shown.

EVERY TWELVE MONTHS

A factory authorized service person should:

1. Open and clean the inside of the control box.

2. Check and tighten all electrical components.

If maintenance is required, contact your local service company, a factory representative, or
Star Manufacturing.

11

1

2

3

IL1190

4

LOWER BAFFLE

UPPER BAFFLE

Removing Finger Assemblies

1. Once cooled, REMOVE conveyor assembly and door.

2. Life up and remove Upper & Lower Bafes as shown in Step 1.

3. Slide Finger Assembly out of unit as shown in Step 2.

4. Lift Assembly apart as shown in Step 3. and wash in a hot water, detergent mix and rinse
ith clean water. For difficult cleaning areas, use a heavy-duty de-greaser or oven

w
cleaner.

Reassemble Finger Assemblies

1. Reassemble nger assemblies and install in unit.

2. Properly install Bafes as shown in Step 4.

CAUTION

BE CERTAIN THE LOWER BAFFLE IS PROPERLY INSTALLED BEHIND THE REAR PANEL
SO NOT TO INTERFERE OR DAMAGE CONVEYOR ASSEMBLY.

3. Reinstall conveyor & door assembly, and test unit for proper operation.

Bafe & Finger Removal / Installation

12