Lang ECOF-T User manual

1
IL2224
ELECTRIC FULL SIZE
CONVECTION OVEN
ECOF-T
Installation and
Operation
Instructions
2M-W1348 Rev. - 8/30/11
ECOF-T

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.
Lang 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
Lang 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
Typical Operation Sequence . . . . . . . . . . . . . . . . . . . 13
Hints & Suggestions. . . . . . . . . . . . . . . . . . . . . . . . 14
Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Troubleshooting
Symptoms / Possible Causes / Test. . . . . . . . . . . . . . . . 16
Wiring Diagram
208/240VAC. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . 18-23
PROBLEMS, QUESTIONS or CONCERNS
Before you proceed consult you authorized Lang service agent directory
or
Call the Lang Technical Service & Parts Department at (314)-678-6315.
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 314-678-6315 or visit our website www.langworld.com for
the service agent nearest you.

4
W
H
D
Front View Side View Top View
15.1”
384mm
2.5”
54mm
ELECTRICAL
CONNECTION
IL2231
2.5”
54mm
ELECTRICAL
CONNECTION
SPECIFICATIONS
Model No. Height x Width x Depth Clearance from combustible surface
(without optional stand) Weight Freight Class
Installed Shipping
ECOF-T 27” x 40.25” x 39.7” Side:6”, Back: 6”, Floor: 6” 380 lbs. 420lbs 70
685mm x 1022mm x 1008mm (173 kg) (191 kg)
ELECTRICAL SPECIFICATIONS
Model No. VOLTS AC Oven Qty Hz. MOTOR
AMPS PHASE AMPS 3PH / NEUTRAL KW TOT. AMPS 1 PH SUPPLY WIRE 1 PH L1 L2 L3 SUPPLY WIRE 3 PH
ECOF-T
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.

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 ECOF oven cavity dimensions are 29” (72.5 cm) Wide, 20” (50.84 cm) High, 21” (53.38 cm) Deep.
The interior of the oven is constructed of porcelainized stainless steel.
Operation
The ECOF-T ovens are forced air convection ovens with a vented oven cavity.
The air is driven by a 1/3 HP fan motor.
Controls
Easy to use manual control knobs.
Solid state temperature sensing and controls.
Pulse and two-speed fan.
Technical
The ECOF-T ovens come in voltages of 208/240V.
Floor space required is 48” (122.6 cm) wide, 44” (112.5 cm) deep.
The oven weighs 430 lbs.
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.
Front
Nameplate Electrical
Input
Motor
Vent
Side Vent
Controls
Door Handle
IL2232

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.
CAUTION

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
side as shown here.
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 side onto a piece of
cardborad. Be sure to read & follow all the
instructions which came with the kit.
27” Leg Installation
With unit in position, fasten the two legs to the front left & rear left corner pads then to the oven
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 two legs and block the right side up using one of the 27-inch legs set upside
down in the center right side of the oven body. Install the third 27-inch leg onto the oven body on
the control side rear. Gently lift the oven to remove the temporary support leg & install it on the
last rear corner.
Front
Rear
Support Assy
Front
Support Assy
Cardboard Swivel
Caster
Caster
IL2235
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 left side. 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.
FRONT BOTTOM
A
A
A
A
C C
D
E
IL2234
E E
E E E
E
B
E
E
E
D
D
DCC
B
Above: Bottom on unit showing the placement of the leg adapters
and their hole assignment.

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
IL2233
Button Plugs Bushing
Stacking Bolts
Upper Oven
Lower Oven

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 jumper wire located under the control compartment behind the bottom trim piece.
As well as changing the transformer input wire to the 240V, color on the primary side of transformer
(see illustration below).
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 9Q-ECOF-CK). This kit includes a 48” cord with a NEMA L15-50P plug and is
for 208/240V units ONLY. In stacked situations each units needs to have separate cord & plug
assemblies.
Oven Voltage
The Lang Model ECOF ovens can be operated on 208, 240-volt (single or three phase). 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.
FRONT
208/240V
Transformer
208/240V
Jumper Location
Trim Piece
IL2237
Left: 208/240V Dual Volatage units are shipped as
208V and must be eld converted to 240V.

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.
Conrm that both thermostat knob and timer knob move freely and that the timer beeps..
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-T Control Panel
The control panel consists of the following items.
Detailed operational descriptions are given later this
section.
Power: Turns the oven on and off
Light: Turns the ovens lights on and off
Hi/Low Speed Fan: Dual speed switch.
Toggles the fan between high & low speed.
Temperature Control: Allows temperature to be set in a
range from 140°F to 450°F
Timer: Electronic on-hour timer with continuous beeper,
Typical Operation Sequence
ACCU-TEMP
Power
Light
Hi/Low
Speed Fan
Temperature
Control
Timer
IL2236
Action Result
Turn Power Switch to ON Control panel heat call
light comes on.
Adjust temperature, between
140°F & 450°F and allow 20
minutes for preheating Oven begins heating
Open oven door and insert
product, set timer up to 60
minutes.
Timer begins counting
down.
Timer beeps continuously
when done. Product should now be done.
ACCU-TEMP

14
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

15
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

16
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 314-678-6315 or visit our website
www.langworld.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

17
W/D ECCO-T 208/240VAC 61111-121 B
DWG. NO:
SHEET OF
DWN. DATE :
DWN. BY :
DESCRIPTION:
MATERIAL PART # :
REV:
11
MATERIAL TYPE :
CAD FILE :
NPE
TSTAT
HEAT
D
HEAT LIGHT
24
1 DECK 1 DECK 2 DECK 2 DECK
VOLTS
L1-L2 L2-L3 L3-L1 TOTAL L1 L2 L3 1 PH
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
SECOND DECK WIRING IDENTICAL FIRST DECK
1 2 3 4 8
7 6 5
CIRCUIT BREAKERS SECOND DECK
TERMINAL BLOCK 12 POLE
GROUND LUG
CONTACTOR FROM MAIN
FUSES
DISC-STAT HIGH-LIMIT
SWITCH 2-SPEED
24VAC
CONTROL
C
ON
LIGHT
PULSE
C
TOP
24VAC
BUZZER
NC C NO
24VAC
TIMER
16 BLU
15 BLK
14 RED
LO HIGH
D
CONNECTOR ARKLESS
25 BLK
23 YEL
30800-05
321
30402-27
30802-04 26 YEL
29 YEL
24 YEL
27 PRL
30 BRN
31 BLU
11090-16 30700-06
RED
WHT
BLU
BLK
BLU
WHT
RED
58 BLUE
BLU
59
7 BLU
6 WHT
5 RED
WHT WHT WHT WHT
31800-01
19 RED 10 RED
21 WHT
11 WHT
38 YEL
61 BLK
60 BLK
19 RED
30701-05
17 BLK
21 WHT
41 BRN 40 BRN
31400-10
45 BLK
46 BLK
18 RED
17
18
19
20
12 RED
10 RED
11 WHT
48 YEL47 YEL
30303-16
22 WHT
13 WHT
30303-06
#2 BOTTOM
#1 TOP
30200-17
30501-02 T-BLOCK
39 PRL 28 PRL 29 YEL 26 YEL 38 YEL
XFMR
XFMR
12-18 RED
PULSE LAMP
32 BLU
36 RED
37 YEL
31601-07
46 BLK
47 YEL 48 YEL
55 53 52 54
51 57 56 50
51 55 57 53 52 56 54 50
208V
JUMPER
T7-T4
T9
P1
NO NCC
D
1 2 3 4 4
3 2 1
FUSE
FUSE
CONTACTOR
MAIN
24VAC
C D
B
240
LIGHT
240VAC FROM MAIN CONTACTOR
B C D
M
DOOR SWITCH
OVEN LIGHTS
MOTOR
MOTOR
CIRCUIT BREAKERS
FIRST DECK
HEATING ELEMENT
TERMINALS
REAR VIEW
SWITCH
POWER SWITCH
PULSE MODE "HEAT"
FROM
REMOVE JUMPER FOR 240VAC
= WIRE NUT
3667W-240V2750W-208V
2750W-208V
2750W-208V
2750W-3667W
3667W-240V
3667W-240V
C D B
30303-06= POWER SWITCH
PULSE SWITCH 2 SPD. SWITCH
-T
CONTROL
12 RED 10 RED
11 WHT
13 WHT
TOP
BOTTOM
CNTR
TIE WRAP
FUSE MOUNT ECCO-226
FUSE HOLDER 30901-08
FUSE
30900-10
28 GRN
39 GRN
42 BROWN

18
SK2509 Rev. A 8/29/2011
ECOF-T Main Assembly
1
2
3
4
5
6 7
8
910 11 12 13 14
15
16
17
18
41
42
43 44
43
40
24 23 37
34
35 36
38
39
19
20 29
30
28
31
21
22
23
27 32
26
25
24
33
SEE DETAIL B
SEE DETAIL A

19
Model: ECOF-T CONVECTION OVEN MAIN ASSY
Fig No. Part Number Qty Description
1 Q9-ECCO-176-7 1 BODY TOP - ECOF-T
2 Q9-ECCO-230-1 1 TOP PANELASSEMBLY
3 Q9-ECCO-127 1 TOP VENTTOP
4 Q9-ECCO-115-2 1 REAR FIREWALLASSY
5 Q9-ECCO-W10 1 ELEMENTACCESS COVER
6 Q9-ECCO-119-2 1 REAR BOX ENCLOSURE
7 Q9-ECCO-W12 1 REAR WIREWAY
8 2K-70801-02 2 SNAP BUSH 1 3/8 SB1375-16
9 2K-70801-04 2 SNAP BUSH 3/4 SB750-10
10 2C-20109-04 4 SCRWTHD MS SS 10-32X3/8
11 Q9-GCCO-431 1 LIGHT RING - CORRECTIONAL
12 2S-31603-04 1 LAMPS INC 250V 50W
13 2E-31602-04 1 LAMP SKT SNAP-IN WHT
14 Q9-ECCO-175-3 1 R/H BODY SIDE
15 2N-11090-16 1 ELE ECCO OVN 208/240V11KW
16 Q9-ECCO-163 1 REAR BAFFLE SPOTWELD
17 2C-71802-01 1 KEY WOODRUFF 3/16 X 5/8
18 2C-20201-15 5 WSHR FLT 960-C-1016 PLTD
19 Q9-50312-67 1 PIVOT BEARINGASSY
20 2P-73000-03 1 SST SPRKT40B11 5/8 BORE
21 2C-20105-04 1 SCRW SET 1/4-20X1/2
22 2C-20301-07 1 NUTACORN 1/4-20 PLTD
23 2C-20111-07 14 SCRW SCKTHD 5/16-18X5/8
24 2C-20115-01 78 SCRW S/S 8-32X1/2 P/H S/T
25 Q9-GCCO-185-4 2 HINGE BRACKET RETAINER
26 Q9-50312-41 1 BEARING BRACKETASSY, LEFT & RIGHT
27 2P-70201-06 2 BRNZBRFLN5/8IDX3/4ODX5/8
28 2C-20301-10 2 NUT HEX 6-32 PLTD
29 Q9-ECCO-145-1 1 MICRO SWITCH BRACKET
30 2E-30301-02 1 SWITCH, MICRO
31 2C-20101-17 2 SCRW RND MS 6-32X1 PLTD
32 2C-20102-12 2 SCRW PHD ST10-32X3/8
33 Q9-ECCO-228-3 1 BOTTOM PANEL
34 2R-50312-W1 1 DOOR HANDLEASSY - S/S
36 Q9-50312-43 1 RH DOOR ASSY E/GCCO
35 Q9-50312-W44 1 LH DOORASSY S/S E/GCCO W
37 2C-20101-10 2 SCRWTHD MS 1/4-20X2 1/4
38 2C-20204-06 14 WSHR S/S 5/16 SPLIT LOCK
39 2C-20203-03 20 WSHR FLT SS 5/16 USS
40 Q9-ECCO-139-4 2 ADJUSTER PLATE
41 2P-70201-07 2 BRNZ BR FLN 5/8IDX3/4ODX1
42 Q9-ECCO-176-8 1 L/H BODY SIDE
43 2B-50200-93 2 RACK SLIDE 11 POS
45 2B-50200-20 5 RACK ECCO/GCCO OVEN
NI Q9-60102-99-1 1 PER OVEN BEARING BRACKETASSYTOP DOOR
NI 2M-61111-121-1 AR WD ECCO-T 208/24-VAC
PARTS LIST August 30, 2011

20
SK2508 Rev. - 4/20/11
Model:
ECOF-T Control Panel Assy
Electric Full Size Convection Oven
Detail A
23
4
6
5
7
6
8
9
10
11
11
12
13
14 15
19
24
20
19
21
18
22
23
16
11
17
1
1
2