Holman UM 1850A-230V Specifications
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ELECTRIC
®
®
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CONVEYOR OVEN
230V MODELS
UM1833A
UM1850A
Installation and
Operation
Instructions
2M-Z9845 Rev B 2/9/07
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 specifi 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 specifi cations contained in this sheet are subject to change
without notice. While Star Manufacturing 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
specifi cations. By using the information provided, the user assumes all risks in
connection with such use.
MAINTENANCE AND REPAIRS
Contact your local dealer 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
SPECIFICATIONS
UM1833A-230V
Rating/Connection: 6,600 Watts (3 x 2,000W element assembly)
Terminal block supplied (L1, L2, L3, N, Ground)
Electrical Supply: Separate service per oven - 15 Amp, 400/230 VAC, 3 phase, 50 Hz
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-230V
Rating/Connection: 6,600 Watts (3 x 2,000W element assembly)
Terminal block supplied (L1, L2, L3, N, Ground)
Electrical Supply: Separate service per oven - 15 Amp, 400/230 VAC, 3 phase, 50 Hz
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
Proper and secure storage facilities should be arranged for the oven(s) if necessary to protect
it from outdoor or damp conditions at all times before installation.
Commerce Regulations require that the claim must be initiated by the consignee.
-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
from the unit prior to heating.
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.
-IMPORTANT-
THIS APPLIANCE MUST BE INSTALLED BY QUALIFIED PERSONS AND INSTALLED
IN ACCORDANCE WITH THE RULES IN FORCE WITHIN THE COUNTRY OF
DESTINATION.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 bushing is supplied
in the bottom of the control box. This allows the installer-supplied cord to be connected to the
terminal block connections located behind the rear access door. The oven must be connected
to power per all applicable codes. A means of disconnecting the oven from power should be
supplied for safety and ease of maintenance.
The appliance must be positioned so the plug is accessible. A hormonized, 300/500V,
oil-resistant, exible cord with 65°C minimum ratings must be used. Choose appropriate
conductors in relation to the length of the cord (1.0 square mm minimum) and operating
conditions (i.e. temperature).
-IMPORTANT-
WARNING
DO NOT CONNECT TO DIRECT CURRENT (DC).
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 specications.
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 qualied 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 verication of proper installation.
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
specic 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 specication 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 OVEN AND/OR INJURY TO THE OPERATOR.
Qualied 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.
Qualied installation personnel must be experienced in such work, familiar with all precautions
r
equired, 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 sufcient 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.
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 airow 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.
This appliance is equipped with a ve-pole terminal and cord bushing to which the
c
ustomer/installer can attach. Each line (L1, L2, L3) should have 230V potential referenced
to the neutral (N) connection. An earth (ground) connection is also provided for a vewire system.
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 (4 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 (4 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
check-out) 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
verication 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 specied 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 qualied operating personnel.
Qualied 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.
Please take time to read the following safety operating instructions. They are the key to
3) Press the up button ( ) to increase
or the down button ( ) to decrease
TIME or TEMPERATURE. Hold
button down for faster display
changes.
4) After five seconds, the new numbers
will be saved and the oven will display
new settings.
4) Après cinq secondes, les nouveaux
nombres seront sauvés et le four montrera
de nouveaux arrangements.
3) Tenez "vers le haut" bouton ( ) pour
augmenter ou "vers le bas" boutonnez ( )
pour diminution de le TEMPS ou
TEMPÉRATURE. Maintenez le bouton pour
des changements plus rapides.
A Star Manufacturing Company
2) Press the enter button ( ) to
switch between TIME and
TEMPERATURE.
Push power switch "ON."
To Start:
2) Appuyez sur le bouton de "entrée" ( )
pour commuter entre le TEMPS et la
TEMPÉRATURE.
1) Tenez "vers le haut" et "vers le bas"
boutonne ( ) en même temps. Tenez
les boutons pendant quatre secondes
jusqu'à ce que l'affichage de la
TEMPS soit blanc.
Après cinq minutes, nouvelle tentative.
Si le brûleur n'allume pas en une minute,
poussée le commutateur de puissance dans
la position de "ARRÊTE" et attend 5 minutes.
Poussez le commutateur de puissance à
"MARCHE."
OFF / ARRÊTE
Ajustement du TEMPS et de la
TEMPÉRATURE:
Pour Commencer:
ON / MARCHE
“HEAT” LIGHT
“TIME” LIGHT
If burner does not light in one minute
push the power switch to the "OFF"
position and wait five minutes.
1) Press the up and down buttons
( ) at the same time, hold for four
seconds until TIME display is blank.
Adjusting TIME and TEMPERATURE:
After five minutes, retry.
the successful operation of your Ultra-Max Conveyor Oven.
SAFETY TIPS
For your safety, read before operating.
If you smell gas:
1. DO NOT try to light any appliance.
2. DO NOT touch any electrical switches.
3. Use an exterior phone to call your gas
supplier immediately.
4. If you cannot reach your gas supplier, call
the re department.
In the event of a power failure:
1. Turn all switches off.
2. DO NOT attempt to operate the oven until
the power is restored.
General Safety Tips:
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 TEMPERATURE display goes blank.
2. Press the ENTER button (
between TIME and TEMPERATURE.
3. Press the UP arrow (
DOWN arrow (
) to increase or the
) 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 switch
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.
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 (
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 (
).
) simultaneously for
ADDITIONAL FUNCTIONS
The conveyor belt direction and the temperature
display can be changed on the conveyor oven
by a qualied 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 start-up/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.
BAKE TIME VERSUS TEMPERATURE
1. Bake time is actually conveyor speed and is dened
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.
CONVEYOR SPEED
Bake Time (Conveyor Speed) - As stated previously, bake
time (conveyor speed) is dened 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.
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.
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.
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