Lang ECOF-C User manual

1
ELECTRIC FULL SIZE
COMPUTERIZED
CONVECTION OVEN
ECOF-C
Installation and
Operation
Instructions
2M-W490 Rev. C 7/08/08
ECOF-C
IL1528

2
These symbols are intended to alert the user to the presence of
important operating and maintenance instructions in the manual
accompanying the appliance.
FOR YOUR SAFTEY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN
THE VICINTIY OF THIS OR ANY OTHER APPLIANCE.
POST IN PROMINENT LOCATION
INSTRUCTIONS TO BE FOLLOWED IN THE EVENT USER SMELLS GAS. THIS
INFORMATION SHALL BE OBTAINED BY CONSULTING YOUR LOCAL GAS SUPPLIER.
AS A MINIMUM, TURN OFF THE GAS AND CALL YOUR GAS COMPANY AND YOUR
AUTHORIZED SERVICE AGENT. EVACUATE ALL PERSONNEL FROM THE AREA.
WARNING
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE
CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THE INSTALLATION,
OPERATION & MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR
SERVICING THIS EQUIPMENT.
WARNING
RISK OF FIRE OR ELECTRIC SHOCK
DO NOT OPEN
WARNING, TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE
CONTROL PANEL. NO USER-SERVICABLE PARTS INSIDE.
REPAIRS SHOULD BE DONE BY AUTHORIZED SERVICE PERSONNEL ONLY.
NOTICE
Using any part other than genuine Lang 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
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 speci 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 & Installation Information in the area below and have it ready when you
call to ensure a faster service.
SAFETY SYMBOL
Model No.:
Serial No.:
Voltage:
1-Phase or 3 Phase:
Purchased From:
Location:
Purchase Date:
Installed Date:

3
TABLE OF CONTENTS
Specications 4
Equipment Description 5
Unpacking 6
Installation
Leg Installation 7
Leg Pad Adapter Installation 8
Stacking the Oven 9
Ventilation & Clearence 10
Electrical Connection 11
Oven Voltage 11
Initial Start-Up
Pre-Power On 12
Power On 12
General Operation & Programming
Control Panel 13
Status Display 14
Control Panel Button 14
Hints & Suggestions 15
Loading 15
Maintenance
Cleaning 16
Troubleshooting
Symptoms / Possible Causes / Test 17
Wiring Diagram
208/240VAC 18
480V 19
220/240/380/415, 3-Phase, 4-Wire, 50-60 Hz 20
380/400V, 3-Phase, 3-Wire, 50 Hz 21
Exploded View & Parts List 22-31
PROBLEMS, QUESTIONS or CONCERNS
Before you proceed consult you authorized Lang service agent directory
or
Call the Lang Technical Service & Parts Department at 1-800-807-9054.
NOTICE ServiceonthisoranyotherLangappliancemustbeperformedbyqualied
personnel only. Consult your Lang Authorized Service Agent Directory.
You can call our toll free number 1-800-807-9054 or visit our website
WWW.STAR-MFG.COM for the service agent nearest you.

4
SPECIFICATIONS
Model Height x Width x Depth Clearance from Weight
(without optional stand) combustible surface Installed Shipping Freight Class
ECOF 27.9” x 40.1” x 39.1” Side:6”, Back: 6”, Floor: 6” 380 lbs. 420lbs 70
708mm x 1019mm x 994mm (173 kg) (191 kg)
15.1”
384mm
2.5”
54mm
ELECTRICAL
CONNECTION
2.5”
54mm
ELECTRICAL
CONNECTION
27.0”
687mm
0.9”
23mm
IL1520
Front View Right Side View Top View
W
H
D
SPECIFICATIONS
Star Number Previous Model VOLTSAC Oven Qty Hz. MOTOR AMPS PHASE AMPS 3PH / NEUTRAL KW TOT. SUPPLY WIRE 1 PH L1 L2 L3 SUPPLY WIRE 3 PH
ECOF-C-CN ECCO-LMDR-C
208V 1
50/60 3.3
1/3 11.5 6 GA. 6.0 2.7 2.7 8 GA.
2 1/3 23 1 GA. 8.8 8.8 5.5 4 GA.
240V 1 1/3 11.5 6 GA. 4.2 3.7 3.7 10 GA.
2 1/3 23 2 GA. 7.8 7.8 7.3 4 GA.
ECOF-2/4CECN ECCO-LMDRHEC 240/415V 1 50 2 3 17.3 11.5 17.3 15.3 15.3 12
ECOF-C2/3VCN ECCO-LMDR-G 220/380V 1 50 3PH-4 WIRE 16.8 9.9 16.8 14.1 14.1 12
ECOF-C2/4VCN ECCO-LMDR-J 240/415V 1 50 3PH-4 WIRE 17.8 11.5 17.8 15.3 15.3 12
ECOF-C380VCN ECCO-LMDR-K 380 1 50 3 11.5 19.7 19.7 12.2 12.0
ECOF-C480VCN ECCO-LMDR-U 480V 1 60 3 11.5 15.6 15.6 10.5 14

5
EQUIPMENT DESCRIPTION
Exterior Construction
The oven exterior dimensions are listed in the Specication Section. The Top, Front, Back, and Sides
are constructed of heavy duty 430 stainless steel, with an attractive No. 4 nish.
The ovens simultaneous-opening heavy duty doors come standard with double pane windows.
The door handle is constructed of Stainless Steel and Phonolic Tubing.
The oven cavity is insulated with high temperature insulation for efciency and reduced heat loss.
Interior Construction
The dimensions of the oven cavity are 29” (73.66cm) Wide, 20” (50.8cm) High, and 21” (53.34cm) Deep.
The oven is designed for three shelves and comes with three Chrome-plated racks.
The interior air deection bafe is constructed of stainless steel.
Operation
The ECOF ovens are forced air convection ovens with a vented oven cavity.
The air is driven by a 1/3 HP fan motor.
Controls
Pre-Programmable Product Selections
Independent Shelf Timers for each Shelf.
Shelf Compensation Timing for uniform baking.
Manual Over-ride mode with a back-up thermostat.
Technical
Oven shipped voltage specic for on either 208 or 240-volt (singe or three phase), 380 or 480V (3-Ph).
The oven can be shipped with a Power Cord and Plug attached, but must be specied upon ordering
(part number is listed in the Parts List portion of this manual).
Floor space required is 44” (111.75cm) Wide, 40” (101.6cm) Deep.
The oven weighs 430 lb. (195.37 Kilograms).
The ovens are stackable and can include stacking kit if requested.
NOTICE The data plate is on the back side of the oven above the power cord.
The oven voltage, wattage, serial number, wire size, and clearance
specicationsareonthedataplate.Thisinformationshould
be carefully read and understood before proceeding with the
installation.
Steam Valve
Cover
Dual Voltage
Access Panel
Motor VentSide Access
Panel
Door Handle Back-Up
Controls
Controls
IL1529
H
W
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6
UNPACKING
Receiving the Oven
Upon receipt, check for freight damage, both visible and concealed.
Visible damage should be noted on the freight bill at the time of delivery and
signed by the carrier’s agent. Concealed loss or damage means it does not
become apparent until the merchandise has been unpacked. If concealed
loss or damage is discovered upon unpacking, make a written request for
inspection by the carrier’s agent within 15 days of delivery. All packing
material should be kept for inspection. Do not return damaged
merchandise to Star Manufacturing Company. File your claim with the
carrier.
Location
Prior to un-crating, move the oven as near to its intended location as practical. The crating will help
protect the unit from the physical damage normally associated with moving it through hallways and
doorways.
Un-crating
The oven will arrive completely assembled inside a wood frame and strapped to a skid.
Cut the straps and remove the wood frame.
The oven can now be removed from the skid.
EACH UNIT WEIGHS 420 or 500 LBS. FOR SAFE HANDLING, INSTALLER
SHOULD OBTAIN HELP AS NEEDED, OR EMPLOY APPROPRIATE MATERIALS
HANDLING EQUIPMENT (SUCH AS A FORKLIFT, DOLLY, OR PALLET JACK)
TO REMOVE THE UNIT FROM THE SKID AND MOVE IT TO THE PLACE OF
INSTALLATION.
ANY STAND, COUNTER OR OTHER DEVICE ON WHICH OVEN WILL BE
LOCATED MUST BE DESIGNED TO SUPPORT THE WEIGHT OF THE OVEN.
SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN CUT.
THIS APPLIANCE MUST BE GROUNDED AT THE TERMINAL PROVIDED.
FAILURE TO GROUND THE APPLIANCE COULD RESULT IN ELECTROCUTION
AND DEATH.
INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUALIFIED TO
WORK WITH ELECTRICITY AND PLUMBING. IMPROPER INSTALLATION CAN
CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT. UNIT
MUST BE INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CODES.
The data plate is located above the control panel behind the screen mesh.
The oven voltage, wattage, serial number, wire size, and clearance
specicationsareonthedataplate.Thisinformationshouldbecarefullyread
and understood before proceeding with the installation.
The installation of any components such as a vent hood, grease extractors,
reextinguishersystems,mustconformtotheirapplicableNational,Stateand
locally recognized installation standards.
CAUTION
DANGER
WARNING
NOTICE
NOTICE

7
INSTALLATION
Leg Installation
Legs are available separately for both the
single and double deck installations. Single
deck installations require a 27-inch leg or
equipment cart. Double deck installations
require 6-inch legs or casters. All these are
available separately.
Place some cardboard on the ground and
with assistance carefully lay the unit on its
back. In stacked
The adjustable feet may be screwed in
or out as necessary to level the oven. A
torpedo level placed on an oven rack will
assist in leveling the oven.
Double-Stack Ovens
To install the 6-inch legs, adj. feet or
casters on the lower unit, follow the leg pad
instructions in the following section or in the
instructions included with the leg pads.
Single Oven
To install 27” legs or cart to your unit, place
the unit laying on its back onto a piece of
cardborad. Be sure to read all instructions
& follow the instructions provided with the
kit.
27” Leg Installation
With unit in position, fasten the two legs to the front corner pads then to the oven’s front corners
using the four 5/16 inch bolts provided in the leg kit. See leg pad adapter illustration to dermine
differences between front & rear support assemblies.
Lift the oven onto its front legs and block the back up using one of the 27-inch legs set upside
down in the center rear of the oven body. Install the third 27-inch leg onto the oven body on the
control side rear. Gently lift the oven rear, remove the temporary support leg & install it on the last
rear corner.
Rear
Support Assy
Front
Support Assy
Swivel
Caster
Caster Cardboard IL1524
Above: typical leg and caster installation.
Below: accessory options, legs, casters & equipment carts sold
separately. Follow installation instructions with the each specic kit.
Stacked Units
Caster Sets 27” Leg Set
(marine also)
27” Equipment Cart
6” Adj. Leg Sets
6” Adj. Bolt Down Leg Sets
(marine only)
Accessory Options
Single Units
IL1525

8
INSTALLATION cont.
Leg Pad Adapter
Identify the front and rear leg adapters (the
front adapters have two threaded inserts, the
rear has four). The leg adapters are included
with each specic accessory kit.
Leg to Adapter Installation:
Install the leg’s threaded stud through the hole
in the adapter labeled “C” with the bent ange
of the adapter facing away from the leg.
Screw the 3/4-inch nut supplied in the adapter
kit onto the leg stud and tighten. Secure to
oven using hardware provided.
Caster to Adapter Installation:
Place the swivel caster against the front leg
pad adapter with the ange of the adapter
facing away from the caster.
Install the four 5/16 inch bolts through the
caster base and the adapter holes labeled “A”
then install the 5/16 inch nuts with washer and
lock washers.
Place the rigid casters against the rear leg
adapter with the ange of the adapter facing
away from the caster.
Align the caster to the holes in the adapter labeled “B”. NOTE: There are two sets of “B” holes set
at 90° from the each other. One set will create a left rear adapter and the other set will create a right
rear adapter.
Install four 5/16-inch bolts through the caster base and the adapter holes labeled “B” then install
5/16-inch nuts with lock washers and at washers.
Adapter to Oven Installation:
Gently tip the oven onto its back. Place the front leg adapter into the front corers of the oven. The
holes without the threaded inserts face the front of the oven and the ange on the adapter points
toward the bottom of the oven.
The edge of the leg adapter with the threaded insert slips under the ange on the oven side, while
the edge without the inserts sits on top of the threaded angle on the oven front.
Install two 3/8-inch bolts with lock washers and at washers through the front holes “D” in the leg
adapter and into the threaded inserts on the oven.
Thread one 3/8-inch bolt with lock washer and at washer into the rear threaded hole labeled “E” on
each of the leg adapters.
The forward threaded hole on the front leg adapter does not get a bolt installed.
Place the rear leg adapters into the rear corners of the oven so that the adapter is under the ange
of the oven side and back.
NOTE: If installing a caster place the adapter on the oven so that the casters roll forward.
Install for 3/8-inch bolts with lock washers and at washers through the holes labeled “E” in the
ange of the oven and into the threaded inserts of the leg adapter.
D
E
E
E
E E E E
E
E
E
A A
A
B
B
B
B
A
C
D D D
C
CC
OVEN BOTTOM
OVEN FRONT
IL1523
Above: Bottom on unit showing the placement of the leg adapters

9
INSTALLATION cont.
Stacking the Ovens
Remove all the plug buttons from the top of the lower oven.
Remove the stacking kit from the oven compartment of one oven and install the 1 1/4-inch plastic
bushing into the top of the lower oven.
Tip the top oven backwards and install two 3/8-inch socket head bolts, found in the stacking kit,
into the two front leg holes that match the holes in the top of the lower oven. Install the socket
head bolts with the heads of the bolt pointing away from the oven.
Lift the top oven and gently set on top of the lower oven so that the heads of the socket head
bolts nest into the holes in the top of the lower oven.
NOTE: Each unit must have separate electrical connections
Button Plugs Bushing
Stacking Bolts
Upper Oven
Lower Oven
IL1526

10
INSTALLATION continued
Ventilation and Clearances
Standard minimum clearance from combustible construction is as follows.
4” from side
4” from back
6” from oor
• These ovens may be set directly, without legs, on a curbed base or non-combustible oor.
• If the oven is set without legs on a non-combustible oor or a curbed base, maintain a 4-inch back
clearance.
• If the oven is set directly against a non-combustible back wall, maintain a 6-inch clearance to the
oor.
• Do not install the oven closer than 4 inches from another oven on the right hand side (control panel
side).
• Do not install the oven closer than 12 inches from an uncontrolled heat source (char broiler etc.) on
the right side.
• Keep the area free & clear of combustible material, and do not obstruct the ow of combustion or
ventilation air.
• The installation of any components such as a vent hood, grease extractors, and/or re extinguisher
systems, must conform to the applicable nationally recognized installation standards.
NOTICE The installation of any components such as a vent hood, grease
extractors,reextinguishersystems,mustconformtotheir
applicable National, State and locally recognized installation
standards.

11
WARNING
WARNING
INSTALLATION continued
Electrical Connection
The electrical connection must be made in accordance with local codes or in the absence of local
codes with NFPA No. 70 latest edition (in Canada use: CSA STD. C22.1).
The electrical service entrance is provided by a 1 1/4-inch knockout in the bottom right front corner
of each oven, or at the oven back directly behind the control compartment.
Grounding lugs are provided at both the front and rear service entrances.
The 208/240-volt oven is a dual voltage oven and is shipped from the factory as 208 volt. The oven
must be eld converted to operate on a 240-volt power supply. To convert the oven to 240 volt,
remove the two screws securing the access cover on the back of the unit, and remove. There you
will nd a switch, move it to the position matching you electrical service (208V or 240V). Earlier
models required you to remove the jumper wire located under the control compartment behind the
bottom trim piece.
With 380V, 440V & 480-volt installations check to be sure that the motor rotates in a clockwise
direction as viewed from the front of the oven. To reverse the motor rotation, switch any two
incoming power supply leads and recheck the rotation.
Supply wire size must be large enough to carry the amperage load for the number of ovens being
installed. Wire size information can be found on the oven DATA PLATE or in the specications
section on page 4.
208/240V ovens can be installed on both single and three-phase supplies and is shipped from the
factory for three-phase. To phase the oven to match the power supply, follow the charts on the
wiring diagram located at the back of the manual.
Certain units are provided with or can be purchased with a Cord & Plug kit (Part number
2E-60101-67). This kit includes a 48” cord with a NEMA L15-50P plug and is for 208/240V units
ONLY (480V applications use PS-60101-68). In stacked situations each units needs to have
separate cord & plug assemblies, contact Lang Parts & Service at 1-800-807-9054 to order.
Oven Voltage
The Lang Model ECOF ovens can be operated on 208, 240-volt (single or three phase), or
380/440/480V (three phase only) source. The Amp draw, KW rating, and phasing can be found in
specication section of this manual.
THIS APPLIANCE MUST BE GROUNDED AT THE TERMINAL PROVIDED.
FAILURE TO GROUND THE APPLIANCE COULD RESULT IN ELECTROCUTION
AND DEATH.
INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUALIFIED TO
WORK WITH ELECTRICITY AND PLUMBING. IMPROPER INSTALLATION CAN
CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT. UNIT
MUST BE INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CODES.

12
INITIAL START UP
Pre-Power On
After the oven is installed and connected to power, prior to turning on, verify the following:
• The doors open and close freely.
• All racks are in the oven correctly.
• All packing materials have been removed from the inside of the oven.
Power On
Once oven has been turned on verify that the blower wheel is spinning freely in a clockwise position and
that the elements are heating properly.
The oven will automatically say “preht” and begin heating.
Once the oven has reached pre-programmed temp display will read “ready”.
Product may now be placed in the oven.
NOTICE Duringtherstfewhoursofoperationyoumaynoticeasmall
amount of smoke coming off the oven, and a faint odor from the
smoke. This is normal for a new oven and will disappear after the
rstfewhoursofuse.INITIAL START UP

13
General Operation & Programming
Convection ovens constantly circulate air over and around the product. This strips away the thin layer of moisture
and cool air from around the product allowing heat to penetrate more quickly.
Cooking times can be shortened and cooking temperatures can be reduced.
To convert standard deck oven recipes, reduce the temperatrue 50° degrees and the time by 25%.
Make minor adjustments as necessary.
Always weigh your product. This will give you a more consistent size, color and quality.
Check the product near the end of the initial cooking.
Do not open the oven door during baking, as this will change the baking characteristics of the oven and make it
difcult to determine a nal program.
If the product is overdone on the outside and underdone on the inside, reduce the baking temperature.
If the product is pulling away from the edge of the pan, the temperature is too high or the cooking time too long.
A convection oven is a mechanical piece of equipment. The
same control settings will always give the same results. If
the results vary, problems may be because of changes in the
product preparation.
ECOF-C Control Panel
The Control panel consists of the following items.
Detailed operational descriptions are given later this
section.
Vent Knob: When open, allows moisture to escape the
cooking chamber, allowing a dryer bake.
(ex: crispy fries)
Lights: Turns interior lights on.
Power: Turns the oven on and off
Status Display: Displays the oven status (preheat, ready,
done) and is the count down timer.
Shelf Timers: 1 : Top Left, 2: Top Right
3: Middle Left, 4: Middle Right
5: Bottom Left, 6: Bottom Right
Pace Timers: Labeled C, P, and E these buttons are
adjutable from one to thirty minutes.
Minute Timers: There are two “Minute” timers:
“1” is programmed for one minute,
“2” is programmed for two minutes.
Temp Button: When pressed this button will display the
current temperature inside the cooking
chamber.
Program Enable Buttons:
Hidden buttons that allow the times of the
shelf position buttons to be set.
Back-Up Controls: These controls give you the basic operation
of the unit, until the primary electonic
controls are operational.
LIGHTS
ON
OFF
ON
OFF
POWER
Vent Knob
Shelf Timers
Status Display
Temp Button
Program
Enable Buttons
Back-Up
Controls
Minute
Timers
Pace
Timers
Lights
Power
IL1530

14
General Operation & Programming cont.
Status Display
The Status Display informs the operator of the oven’s condition.
Preht: Stands for PREHEAT. The oven is on and adjusting to the preprogrammed temperature
(350°F).
Ready: The oven has reached the preset temperature and is waiting for product to be loaded into
the oven.
Cool: The oven’s internal temperature is below what is programmed.
Hot: The oven’s internal temperature is above what is programmed.
Done: The time has expired for that program and the product is nished.
Help: There is a fault in the control system; the computer will not operate until service is performed.
Control Panel Buttons
Shelf Buttons: Place the product into the oven on one of the six shelf positions.
Close the oven doors. Press the shelf position button that
corresponds to the shelf position once for “C” product, twice for
“P” product, three times for “E” product, or four times for off. A
beeper will sound once the product is done and “done” will be
displayed. Press the ashing shelf to cancel the beeper.
Minute and Pace Timers: The “1” button is preset to one minute, the “2” button is preset
to two minutes, and the “Pace “ buttons are adjustable from one
to thirty minutes. Press the button once to start the timer. The
display will read out the programmed time and then revert to the
previous read out. The timers will countdown internally. Time
remaining can be recalled by pressing the button again.
Canceling a timer: Any timer can be cancelled at any time. Press and hold the
timer to be cancelled until “cancl” appears in the display.
Programming
Pace Timers: The pace timers can be set at any time. Press and hold the “PACE” button
for three seconds. The display will read out the set time then begin to
ash. Press the “1” minute button to increase the time, or the “2” minute
button to decrease the time. Once the corrected time is set, press and hold
the “PACE” button for three seconds to exit the programming mode.
Program Enable Buttons: The control cannot be put into the programming mode if any of the
timers are running. The two blue dots above the “CINNABON” logo are
the program enable buttons. Press the left dot then the right dot within
3 seconds to put the control into a programming mode. Once the shelf
position buttons are set, press the left dot then the right dot within 3
seconds to exit the programming mode. There will be no beeper sound
when the buttons are pressed.
Shelf Position Buttons: Put the control into the programming mode. Press the shelf button to be
adjusted once for “C” product, twice for “P” product, or three times for
“E” product. The display will read out “00:00” then begin to ash. Press
the one-minute timer button to increase the time, or the two-minute timer
button to decrease the time. Once the correct time is set move on to
another shelf position button or exit the programming mode.

15
General Operation & Programming cont.
Hints & Suggestions
Convection ovens constantly circulate air over and around the product. This strips away the thin layer
of moisture and cool air from around the product allowing heat to penetrate more quickly.
Cooking times can be shortened and cooking temperatures can be reduced.
To convert standard deck oven recipes, reduce the temperature 50 degrees and the time by 25%.
Make minor adjustments as necessary.
The lower the oven temperature the more even the bake.
Always weigh your product. This will give you a more consistent size, color and quality.
Check the product near the end of the initial cooking cycle by turning on the oven light and looking
through the oven door windows.
Do not open the oven doors during baking as this will change the baking characteristics of the oven and
make it difcult to determine a nal program.
If the product is overdone on the outside and underdone on the inside, reduce the baking temperature.
If the product is pulling away from the edge of the pan, the temperature is too high or the cooking time
too long.
The convection is a mechanical piece of equipment. The same control settings will always give the
same results. If the results vary, problems may be because of product preparation.
Opening the vent will to allow mositure to escape the cooking chamber during part or all of the cooking
process. This will allow a more crispy product, example: french fries, sh, crispy crusts. Close the vent
for dough products like cinnamon rolls, breads. This is something to experiment with to determine what
is best for your specic menu.
Loading
Here are some things to remember when loading your oven.
• When loading and unloading the oven, stage products and racks so the oven door is opened for the
least amount of time.
• Be sure that racks are level within the oven.
• Bent or warped pans can greatly affect the evenness of the cook or bake.
• If using baker’s parchment, be sure the parchment does not blow over the product. That will create
an uneven bake.
• Load each shelf evenly. Spaces should be maintained equally between the pan and oven walls, front
and back.
• Do not overload pan’s this will create an uneven bake.
• For best baking results, load the oven from the center out during random loading.
ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE FROM
COMBUSTIBLE MATERIALS.
KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF
SPILLS OCCUR, CLEAN IMMEDIATELY, TO AVOID THE DANGER OF
SLIPS OR FALLS.
CAUTION

16
MAINTENANCE
• Oven interiors should be wiped down daily and thoroughly cleaned weekly using warm water and mild detergent.
DO NOT use caustic cleaners.
• The appliance should be thoroughly checked at six-monthly intervals by a qualied technician
(heating unit, mechanical stability, corrosion...) with particular emphasis on all control and safety
devices.
CLEANING
• Always start with a cold oven.
• The stainless exterior can easily be cleaned using stainless steel cleaner.
• Always follow the cleaner manufacturer’s instructions when using any cleaner.
• Care should be taken to prevent caustic cleaning compounds from coming in contact with the fan wheel.
• The oven racks, rack slides, may be cleaned outside the oven cavity using oven cleaner.
• Using any harsh chemicals will result in the removal of the ETC coating and etching of the
porcelain below it. The oven interior should only be cleaned using a mild soap and a non metal scouring pad.
DO NOT use caustic cleaners.
• Always apply stainless steel cleaners when the oven is cold and rub in the direction of the metal’s grain.
KEEP WATER AND SOLUTIONS OUT OF CONTROLS. NEVER SPRAY OR HOSE
CONTROL CONSOLE, ELECTRICAL CONNECTIONS, ETC.
MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS
MEMBRANES AND CLOTHING. PRECAUTIONS SHOULD BE TAKEN TO WEAR
RUBBER GLOVES, GOGGLES OR FACE SHIELD AND PROTECTIVE
CLOTHING.
CAREFULLY READ THE WARNING AND FOLLOW THE DIRECTIONS ON THE
LABEL OF THE CLEANER TO BE USED.
NEVER LEAVE A CHLORINE SANITIZER IN CONTACT WITH STAINLESS STEEL
SURFACES LONGER THAN 10 MINUTES. LONGER CONTACT CAN CAUSE
CORROSION.
WARNING
CAUTION

17
Troubleshooting
Symptoms & Possible Causes
The following are charts of Symptoms and Possible Causes to aid in diagnosing faults with your unit.
Refer to the symptoms column to locate the type of failure then to the Possible Cause for the items to be checked.
To test for a possible cause refer to test to identify test procedures. Test indicated with an “*” should be done by a
Lang factory authorized service representative.
Possible Cause Test
Product is cooked too long No test available, operational
condition
Failed Probe Check probe for proper resistance*
Failed Circuit board Conrm that Circuit board is getting correct voltage and putting out
correct voltage*
Failed Transformer Check both Primary and Secondary
coils for correct voltage*
Failed Contactor
Remove the wires from the
contactor coil and check for
continuity across the contactor coil
connection*
Ensure the contactor moveable
points move freely up and down*
Failed Motor Conrm that motor is getting correct
voltage*
Failed or disconnected safety
thermostat Check across the thermostat connectors for continuity*
Failed Element Conrm that Elements are getting
correct voltage and have continuity*
NOTICE If an item on the list is followed by an asterisk (*), the work should be done by
a Lang factory authorized service representative.
USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY
LANG OR THEIR AUTHORIZED DISTRIBUTORS CAN CAUSE BODILY INJURY
TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL
WARRANTIES.
NOTICE ServiceonthisoranyotherLangappliancemustbeperformedbyqualied
personnel only. Consult your Lang Authorized Service Agent Directory. You
can call our toll free number 1-800-807-9054 or visit our website
WWW.STAR-MFG.COM for the service agent nearest you.
BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS APPLIANCE
WHEN THE UNIT IS PLUGGED/WIRED INTO A LIVE RECEPTACLE. BEFORE
REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC
POWER SUPPLY.
CAUTION
WARNING
Symptoms Possible Cause
Power indicator is not lit
No power to cord outlet
Oven unplugged from outlet
Failed power cord or plug
Failed power switch
Failed indicator light
Oven will not heat
Power switch is not “ON”
Failed transformer
Failed probe
Failed circuit board
Failed contactor
Failed over-temperature thermostat
Failed element
Oven motor will not run
Power switch is not “ON”
Failed transformer
Failed contactor
Failed motor
Product burning
Product is cooked too long
Failed probe
Failed circuit board
Product is under done
Product is not cooked long enough
Failed probe
Failed circuit board

18
7-13-95
DWG. NO:
SHEET
OF
DWN. DATE :
DESCRIPTION:
W/D ECCO-C-STM 1 SPD - 208/240V
61111-127
REV:
1D
1
SECOND DECK WIRING IDENTICAL FIRST DECK 1
2 3 4 8
7 6 5
CIRCUIT BREAKERS SECOND DECK
TERMINAL BLOCK 24 POLE
POWER SWITCH
-C & -C -STM
CONTROL
BUZZER
TOP
P1
T9
T7-T4
ALT. MOTOR HOOK UP
24
55 53 52 54
51 57 56 50
51 55 57 53 52 56 54 50
240
STEAM
HEAT
FAN LO FAN HI
24VAC
INTERFACE
B
BACKUP RELAY
CNO NC
MOTOR HI
STEAM BACKUP
COMPUTER
TSTAT
"HEAT"
STEAM
CONTROL FROM "HEAT"
NO NCC
D
SOLENOID
STEAM VALVE (WHEN PRESENT)
CONTROL FROM "STEAM"
24
VAC
L
1 2 3 4 4
3 2 1
FUSE
FUSE
CONTACTOR
MAIN 24VAC
B
LIGHT
240VAC
FROM MAIN
D C A B
OVEN LIGHTS
SWITCH
DISC-STAT HI-LIMIT
DOOR SWITCH
FIRST DECK CIRCUIT BREAKERS
TERMINALS HEATING ELEMENTS REAR VIEW
BACKUP SWITCH
SWITCH
TO POWER SWITCH
BACKUP NORMAL
STEAM OFF OFF STEAM
TO COMPUTER
12
MOTOR
MOTOR
NONC C
24
CONTACTOR FROM MAIN
RTD
AC
STEAM OPTIONAL CONTROL
CONTACTOR
L H
H
H
H L
L
= LO V SUPRESSOR
= HI V SUPRESSOR
= 600V SNUBBER
= 100V SNUBBER
2750W - 208V 3667W - 240V
RED
BLACK
= CERAMIC CAPACITOR
BLACK RED
VOLTAGE SELECTION SWITCH
UP FOR 240VAC
DOWN FOR 208VAC
B
208
C D A
A
240 208
A
B
NC
240 NOC
TRANSFORMER RELAY
1 DECK 1 DECK 2 DECK 2 DECK
VOLTS
L1-L2 L2-L3 L3-L1 TOTAL L1 L2 L3 1 PHASE
KW AMPS
240 208 240 208
8 8.91 4.33 6.16
8 8.91 3.67 2.75
7.33 5.5 3.67 2.75
23.33 23.33 11.66 11.66
55.3 60 28.9 37
57.7 74.2 28.9 37
55.3 60 26.5 22.9
97.2 112 48.6 56
1,4,72 DECK 2,5,8 3.6 2,4,6,81,3,5,7
L1
1,41 DECK
L2 L3
2 3
THREE PHASE
L1 L2
2,41,3
SINGLE PHASE
SERVICE CONNECTIONS
GROUND LUG
REVISION BLOCK
ECN NO.REV DESCRIPTION DR: DATEMFG ENG
D INSTALL TRASFORMER RELAY DLG 06-06-01

19
1 DECK 2 DECK
VOLTS
L1-L2 L2-L3 L3-L1 TOTAL L1 L2 L3
KW AMPS
480 480
8.7 6.0
8.7 2.7
5.4 2.7
23.0 11.5
25.8 15.8
31.6 15.8
25.8 10.0
1-62 DECK 2-4 3-5
L1
11 DECK
L2 L3
2 3
SERVICE CONNECTIONS
SECOND DECK WIRING IDENTICAL FIRST DECK
1 2 3
CIRCUIT BREAKERS SECOND DECK
GROUND LUG
5 3
4 2
6 1
6 5
4
CONTACTOR
FROM MAIN
= SNUBBER 100VACL = LO VOLTAGE SUPRESSOR
L
L
RTD HEAT
24VAC
FAN LO
FAN HI
INTERFACE
STEAM
BUZZER
H
24
FUSES
480
= HI VOLTAGE SUPRESSOR
H
= CERAMIC CAPACITOR
L3
L2
L1
CONTROL FROM "HEAT"
NO NCC
D
SOLENOID STEAM VALVE (WHEN PRESENT)
CONTROL FROM "STEAM"
24
VAC
L
1 2 3 3
2 1
FUSE
1
2MOTOR
FUSE MOTOR
FIRST DECK
24VAC
MAIN
CONTACTOR
55 53 52 54
51 57 56 50
51 55 57 53 52 56 54 50
A
240
A
BC
BACKUP RELAY
CNO NC
MOTOR HI
STEAM BACKUP
COMPUTER
TSTAT
"HEAT"
STEAM
SWITCH
SWITCH BACKUP
DOOR SWITCH
CIRCUIT BREAKERS
TERMINALS HEATING ELEMENT
REAR VIEW
12
TO POWER SWITCH
NORMAL
OFF STEAM
L1 L3
L2
M
DISC-STAT
L1 L2 L3
BACKUP
240
D C A B
HI LIMIT
LIGHT
B
240
OVEN LIGHTS 240 VAC
LIGHT
RELAY
SWITCH
POWER
SWITCH
CONTACTOR FROM MAIN
NC C NO
24 VAC
240
A
DC
OPTIONAL STEAM CONTROL
TO COMPUTER
RED
BLACK
24
H1
H2X1
X2
C CHANGED TO 1 SPEED MOTOR DLG 04-06-01
MOTOR
3
FAN ROTATION CLOCKWISE
D ADDED HI LIMIT CONTACTOR PER UL JMM 05-01-097831
L
24VAC
MAIN
CONTACTOR
C
D
-C & -C -STM
CONTROL
2750W-480V
REVISION BLOCK
ECN NO.REV DESCRIPTION DR: DATEMFG ENG
Model: ECCO-C, 480VAC 2M-61111-129, Rev. D, 5/01/09

20
10-15-03
51
55
53
52
54
50
A
240
STEAM
HEAT
FAN LO
FAN HI
24VAC
INTERFACE
B
BACKUP RELAY
C
NO
NC
MOTOR HI
STEAM BACKUP SWITCH
COMPUTER
TSTAT
"HEAT"
STEAM
CONTROL
FROM
"HEAT"
NO
NC
C
D
SOLENOID
STEAM VALVE
(WHEN PRESENT)
CONTROL
FROM
"STEAM"
24
VAC
L
1
2 3
3 2
1
FUSE
MAIN
CONTACTOR
24VAC
C
D
B
A
240
24
LIGHT SWITCH
FROM MAIN
CONTACTOR
POWER SWITCH
OVEN LIGHTS
240VAC
DISC-STAT HI-LIMIT
DOOR SWITCH
BACKUP SWITCH
-C & -C -STM
CONTROL
TO POWER SWITCH
BACKUP
NORMAL
STEAM OFF OFF STEAM
TO COMPUTER
12
MOTOR
NO
NC
C
24
BUZZER
RTD
A
C
TOP
OPTIONAL
STEAM
CONTROL
RED
BLACK
NOT ON STEAM UNITS
N
L1
P1
T7-T4
M
T9
ALT. MOTOR HOOKUP
BLACK
RED
C
24VAC
30700-06
MAIN
CONTACTOR
N
N
YEL
SECOND DECK WIRING IDENTICAL FIRST DECK
1
2
3
5
4
6
SECOND DECK
CIRCUIT BREAKERS
D
C A
B
TERMINAL BLOCK
24 POLE
GROUND LUG
L
H
H
L
L
= LO V SUPRESSOR = HI V SUPRESSOR
= 100V SNUBBER = CERAMIC CAPACITOR
NN
FUSE
D
BRN BRN
55
53
52
54
51
57
56
50
TERMINALS
HEATING ELEMENTS
REAR VIEW
D
L
240
208
XFMR WIRED FOR 208 VOLTS TO CHANGE TO 240V DISCONNECT RED 208 LEAD & CONNECT BLUE 240 LEAD TO TERM. BLOCK DO NOT CONNECT BOTH.
B
2750W - 208V 3667W - 240V
REV.
DATE/ECO
DESCRIPTION OF CHANGE
DR
C
9/07/2007
ECO # 7002
CORRECTED ELECTRICAL RATINGS
TABLE & 2ND DECK WIRE HOOKUPS
LRC
D
5/1/2009
ECO 7831
ADDED HI LIMIT CONTACTOR PER UL
JMM
A
B
C
D
DWG. NO:
SHEET
OF
DWN. DATE :
DWN. BY :
CHK. BY :
DESCRIPTION:
W/D ECCO-C 1 SPD - 220/240/380/415 3 PHASE 4 WIRE, 50 OR 60 Hz
1
Company
Manufacturing
61111-130
REV:
2
1
CAD FILE :
CHK. DATE :
REV. BY :
REV. DATE :
E
F
G
HH
G
F
E
D
C
B
A
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
DLG
D