These symbols are intended to alert the user to the presence of
important operating and maintenance instructions in the manual
accompanying the appliance.
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN
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.
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE
CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THE INSTALLATION,
OPERATION & MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR
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.
FOR YOUR SAFTEY
THE VICINTIY OF THIS OR ANY OTHER APPLIANCE.
POST IN PROMINENT LOCATION
WARNING
SERVICING THIS EQUIPMENT.
WARNING
RISK OF FIRE OR ELECTRIC SHOCK
DO NOT OPEN
NOTICE
Using any part other than genuine Lang factory supplied parts relieves the manufacturer of all
liability.
Lang reserves the right to change specications 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 specications 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 specications. 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.
Model No.:
Serial No.:
Voltage:
Purchased From:
Location:
Purchase
Date:
1-Phase
or 3 Phase:
Installed Date:
2
Page 3
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.
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.
3
Page 4
SPECIFICATIONS
30.2”
25.3”
30.2”
Model Height x Width x Depth Clearance from Weight
(without optional stand) combustible surface Installed Shipping Freight Class
ECOH 25.3” x 30.2” x 25.3” Side:6”, Back: 6”, Floor: 6” 185 lbs. 225lbs 85
and understood before proceeding with the installation.
5
Page 6
CAUTION
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.
THE UNIT IS EXTREMELY HEAVY. 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.
6
Page 7
Leg
Mounting Hole
4” Leg
INSTALLATION
16” or 28”
Stand
Cardboard
Leg Installation
4” legs are available for single
countertop installations. Single and
double deck installations require
16” or 28” stand installation, casters
may also be used in certain
situations.
To install the 4” legs, place some
cardboard on the oor and gently tip
the unit onto its back. Fasten the
four, 4” legs into the threaded holes
located on the bottom of the unit.
Gently lift the oven into its operating
IL1430
position.
16” & 28” stand installation, after
following the assembly
instructions that were provided with
the stand, gently lower unit on to
some cardboard as shown here.
Align the stand with the bottom of
the unit and secure with the
hardware provided. With the
assistance of carefully raise the unit
to its vertical position.
Stacking the Ovens
Two alignment pins (pn:2C-20108-11) are
needed if you intend on stacking two ECOH
on each other as shown. These pins must be
requested at the time of purchase, or call your
Lang authorized service agent, or Lang parts
department at 314-678-6315, or a Lang Service
Agent near you.
Having completed the previous step remove
any and all button plugs from the lower unit, so
the upper unit will lay properly.
Lay the upper unit on its back and screw the
alignment pins into the two rear holes.
With assistance lift the upper unit onto the lower
unit, being certain that the alignment pins go
into the alignment holes, as shown here.
NOTE: Each unit must have separate
electrical connections
Alignment Pins
pn: 2C-20108-11
Alignment Hole
IL1431
7
Page 8
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 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,reextinguishersystems,mustconformtotheir
applicable National, State and locally recognized installation
standards.
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 at the oven back directly behind the
control compartment. A grounding lug is provided at the rear service entrance.
Certain units are provided with or can be purchased with a Cord & Plug kit
(Part number 9Q-ECOH-CK). This kit includes a 48” cord with a NEMA L15-30P plug and is for 3 Phase
units ONLY. In stacked situations each units needs to have separate cord & plug assemblies.
Oven Voltage
The Lang Model ECOH ovens can be operated on 208, 240-volt (single or three phase), or 480-volt
(three phase only) source. The Amp draw, KW rating, and phasing can be found in specication section
of this manual.
THIS APPLIANCE MUST BE GROUNDED AT THE TERMINAL PRO-
VIDED. FAILURE TO GROUND THE APPLIANCE COULD RESULT IN
WARNING
ELECTROCUTION AND DEATH.
I NSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUAL-
IFIED TO WORK WITH ELECTRICITY AND PLUMBING. IMPROPER
INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAM-
WARNING
AGE TO EQUIPMENT. UNIT MUST BE INSTALLED IN ACCORDANCE
WITH ALL APPLICABLE CODES.
8
Page 9
REVERSING THE DOOR
1. Disconnect oven from power.
2. Remove the top and bottom door hinge covers (4) by removing the two 10-32 Phillip head
screws (8).
3. Remove the top door hinge bracket (1) from the oven by removing the two ¼-20 Phillip head
screws (7). The hinge should now slide off of the door pin (this will now be your right hand
lower hinge)
4. Lift the door off the bottom pin and set aside.
5. Remove the bottom door hinge bracket (2) by removing the two ¼-20 Phillip head screws (7)
(this will now be your upper right hand hinge).
6. Remove the lower hinge mounting plate (9) by pulling it from behind the leg pad adapter on the
bottom of the oven.
7. Remove the two Phillips head screws in the bottom right corner of the oven, where the new
hinge will be placed.
8. Slide the hinge mounting plate (9) into place and mount the hinge bracket (this should be your
old upper hinge) using two ¼-20 (7) Phillips head screws.
9. Remove the two Phillips head screws in the upper right corner of the oven where the new hinge
will be placed.
10. Rotate the door 180° and slide the door pin into the bottom hinge bracket.
11. Slide the upper door hinge (1) onto the upper door pin and then screw into place using
two ¼-20 Phillip head screws.
12. Place the top and bottom door hinge covers (4) back on the oven using two 10-32 Phillip head
screws (8).
8
4
5
6
6
5
8
7
8
1
1
8
12
8
10
8
11
ECOH HINGE RELPACEMENT KIT
pn: Q9-50313-030
ITEM NO. QTY.PART NO.DESCRIPTION
3
4
5
6
7
8
9
10
11
12
50313-031
2
EH-267
2
70201-19
2
70201-01
2
20109-43
2
20109-15
8
eh-198-1
1
CR30-148
1
EH-265-1
1
1EH-266-1
9
HINGE PIN WELDMENT
EH HINGE COVER
BOTTOM HINGE PLATE ASSY
UPPER HINGE COVER FOR EH
EH HINGE - TOP - FOR SVC KIT
EH HINGE - BOTTOM - FOR SVC KIT
INSERT BEARINGS (ITEMS "5") INTO THE HINGES
(ITEMS "1" & "2") AS SHOWN THEN REAM WITH A
.508 REAMER.
8
7
4
IL1426
9
Page 10
INITIAL START UP
Pre-Power On
After the oven is installed and connected to power, prior to turning on, verify the following
• The door opens and closes freely
• All racks are in the oven correctly
• All packing materials have been removed from the inside of the oven
Power On
Once the oven has been turned
on verify that the blower wheel
is spinning freely in a clockwise
position and that the elements
are heating properly.
Switch the back-up controls on
and make certain it can run the
unit,
Conrm that the thermostat
knob in the back-up controls is
move freely.
Blower Wheel
Back-Up Controls
NOTICE
Duringtherstfew
IL1456
hours of operation you
may notice a small
amount of smoke coming from the oven, and a faint odor from the smoke.
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.
Always weigh your product. This will give you a more consistent size, color and quality.
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.
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
difcult 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.
ECOH-PT Control Panel
The control panel consists of the following items.
Detailed operational descriptions are given later this
section.
Power Switch: Turns the oven on and off
Function Keys: Keys are active when a program
option is displayed on the display adjacent to that
key.
Up & Down Buttons: Allows you to scroll through
the programming selections.
Cancel: When scrolling through menus this will allow
you to back up to the previous menu. In program
mode this will allow you to back up to the previous
step.
Alpha Numeric Display: Visual interface.
AlphaNumeric
Display
Function Keys
Typical Operation Sequence
ACTIONRESULT
Control panel comes on; display says
Press the on switch.
Select “Run Oven”.
Select Product button next to
Icon desired.
Beeper sounds briey.Display says "Ready"
Select Product to start.
Select Product to start.. Display says, “Select shelf”
Press Product button next to
desired shelf.
Beeper sounds continuously.
Oven is ready for another
product.
“LANG, Run Oven, Time Date Program".
Display will show a list of product to
choose.
Display says “Preheating to XXXF”.
Display shows possible product
selection for that temperature.
Display will show icon chosen and
begin to count down.
Display shows “DONE”, press button
and remove product from that shelf.
Up & Down Button
Cancel Button
Power Switch
11
Page 12
GENERAL OPERATION & PROGRAMMING CONT.
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.
CAUTION
KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS OCCUR,
CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR FALLS.
12
Page 13
17 Brownies
18 Cake A Chocolate
19 Cake B White
20 Calzone
37 Doughnut, Option 2
38 Egg Dish
39 Egg Roll
40 Fish
57 Peanut
58 Pear
59 Pie A
60 Pie B
9 Baked Potato
10 Banana
11 Biscuit
12 Bread French
13 Bread French Option 2
14 Bread Loaf
15 Bread Sourdough Round
16 Bread Stick
29 Cookie A
30 Cookie A, Option 2
31 Cookie B
32 Cookie C
33 Cookie Chocolate Chip
34 Cookie D
35 Cornbread
36 Doughnut
49 Lasagna
50 Lemon
51 Mufn A
52 Mufn B
53 Mufn C
54 Onion Rings
55 Onion Rings, Option 2
56 Pastry
1 Appetizer A
2 Appetizer B
3 Appetizer C
4 Appetizer C, Option 2
5 Apple
6 Bagel A
7 Bagel B
8 Bagel C
21 Casserole
22 Cheese Stick
23 Cheese Cake
24 Cheery
25 Chicken
26 Chicken Strips
27 Cinnamon Roll
28 Cinnamon Roll, Option 2
41 Fish, Option 2
42 Flag
43 French Fries
44 Ham
45 Hash browns
46 Hash browns, Option 2
47 Hoagie
48 Hot Dog
Icon
No. Description
Product NameIcon No.
ex: Biscuits11325°F12:3050%HI100%
Product Icons: This list shows the icons available for your menu programs, they appear in the same order as shown here.
Cooking
Temp
Icon
No. Description
Cooking
Time
Record your specic menu items using the table below, prior to entering them
Record Your Menus Here Before Entering Your Program.
Tier 1Tier 2Tier 3
Cooking
CurveFan Speed
into your units program. Keep for your records.
Pulse
Rate
Icon
No. Description
Cooking
Temp
73 Quiche, Option 2
74 Ribs
75 Roast Beef
76 Roll
77 Roll, Option 2
78 Sandwich A
79 Sandwich on Hoagie
68 Pork Chop
69 Pot Pie
70 Potatoes
71 Pretzel
72 Quiche
86 Triangle
87 Vegetable
88
89 Vegetable
90 Birthday Cake
62 Pie D
63 Pie Cherry
64 Pizza A
65 Pizza B
66 Pizza Cheese
67 Pizza Pepperoni
Option 2
81 Sausage
82 Scone
83 Seafood
84 Square
85 Star
No. Description
61 Pie C
No. Description
80 Sandwich on Hoagie,
Cooking
Time
Cooking
Curve
Speed Pulse Rate
Fan
Icon
Cooking
Temp
Cooking
Time
Icon
Cooking
CurveFan Speed
13
Rate
Pulse
Page 14
Platinum PROGRAMING
When using the Platinum Control Panel follow
these simple steps.
Function Keys: Are active when selecting an option that is displayed on the LCD Screen.
Function Buttons:
Cancel: During Program Mode it will take you to
the next step, otherwise it will take you back to
the
previous menu.
Up & Down: Will move you through the selections/settings displayed on the LCD Screen
which will be used when programming your
specic
requirements. (Example: access codes,
temperature settings, cooking time, curve , fan
speed etc.)
On/Off: Main Power Switch
Function
Keys
Function
Buttons
Platinum PROGRAMMING
LCD Screen
CancelUpDownOn/OffLight
IL1477
Programming Step Contents:
Step 7 Select Product Icon,
Step 8 Select Product Name,
Step 9 Select Product Temperature,
Step 10 Select Tier Cook Time,
Step 11 Select Cooking Curve,
Step 12 Select Fan Speed,
Step 15 Continue To Next Tier
Cooking Curve: Cooking curve is a programmable function
that adjusts the cooking time to compensate for planned
times when the oven temperature would be lower than the
programmed temperature.
(i.e. temperature loses during loading and unloading).
Cooking Curve 40%, is the most commonly used. Cooking
Curve settings from 0% (no time adjustment) to 100% (max
time adjustment) are available. As a general rule the longer
the cooking time the lower the cooking curve, the shorter the
cooking time the higher the cooking curve.
Pulse Fan Function: A Fan Pulse Rate setting allows the fan to
be programmed to cycle on and off at regular intervals during
the period in the cooking cycle when there is no heat applied.
(The computer will not allow the fan to be OFF whenever the
heat is ON).
Tier Cooking: “Tiered” programming is the ability to change the
cooking temperature or fan function while cooking. (i.e. some
products may require high heat and the fan to be LO for the
rst half of the cooking cycle. Tier 1 would be programmed
with the Heat up and the fan LO and Tier 2 would then be
programmed with the heat lowered and the fan HI for the
remainder of the cycle.)
Multiple shelf baking function is disabled when using Tier
Baking programs.
14
Page 15
®
Platinum PROGRAMMING
◄ MANUAL MODE
◄ RECIPE MODE
◄ PROGRAMMING
TIME DATE TEMP STATUS
12:00 01/01/01 325 STANDBY
CancelUpDownOn/Off
Light
Step 1. Turn power switch on. If the oven
is on, press cancel until the above
screen is displayed.
Step 2. Select PROGRAMMING
◄ DISPLAY PRODUCT
◄ TIMER ONLY
◄ SET TIME / DATE
◄ PROGRAM COMPUTER
TIME DATE TEMP STATUS
12:00 01/01/01 325 STANDBY
CancelUpDownOn/Off
Light
Step 3
Select PROGRAM COMPUTER
ENTER ACCESS CODE
A
USE ▲▼ KEYS TO SELECT
THEN PRESS ENTER
◄ ENTER
PRESS CANCEL TO QUIT
CancelUpDownOn/Off
Light
Step 4 Using the ▲▼ arrows, enter
access code “A B C D E F”
pressing ENTER after each letter.
◄ PROGRAM PRODUCT
◄ EDIT ACCESS CODE
◄
CONFIGURE OVEN OPERATION
CancelUpDownOn/Off
Light
Step 5 Select PROGRAM PRODUCTS
then
Step 6 Select
CREATE NEW PRODUCTS
SELECT PRODUCT ICON
USE ▲▼ KEYS TO SELECT
THEN PRESS
ENTER TO ACCEPT
PIE A
◄ ENTER
CancelUpDownOn/Off
Light
Step 7 Select Product Icon,
Thisis the rst screen in creating a
product program. Press ▲▼ until
you nd a icon which resembles
your product.
Select ENTER to accept the icon
and move to the next screen.
Note: Refer to the Chart on page 13 for a
selection of icons available.
SELECT PRODUCT NAME
APPETIZER A
USE ▲▼ KEYS TO SELECT
PIE A
◄ ACCEPT
◄ ENTER
CancelUpDownOn/Off
Light
Step 8 Select Product Name, This is where you enter the name
of the product into the computer.
Using the ▲▼ keys type over the
default name, blank space is before
the A and after the 9.
Select ACCEPT to continue.
Note: Curser must be moved past the last
digit to save the entire entry.
15
Page 16
Platinum PROGRAMMING
SELECT PRODUCT TEMP
USE ▲▼ KEYS TO SELECT
TIER 1
◄ ACCEPT
◄ ENTER
CancelUpDownOn/Off
100
PIE A
Light
Step 9 Select Product Temperature,
Press the ▲▼ to select the rst
digit, then press ENTER to move
to the next digit. It will
automatically move to the next
screen after the third digit.
SELECT TIER COOK TIME
USE ▲▼ KEYS TO SELECT
TIER 1
TEMP: 320°F
◄ ACCEPT
◄ ENTER
CancelUpDownOn/Off
00:45:00
PIE A
Light
Step 10 Select Tier Cook Time, Time is entered in
hours:minutes:seconds.
The maximum is 12:59:59.
Select ENTER to move the cursor
to the place you want to enter the
number.
Select ACCEPT to continue.
SELECT COOKING CURVE
USE ▲▼ KEYS TO SELECT
TIER 1
TEMP: 320°F TIME: 00:45:00
◄ ACCEPT
◄ ENTER
CancelUpDownOn/Off
000%
PIE A
Light
Step 11 Select Cooking Curve,
press ▲▼ to select the numbers,
press the ENTER to move the
cursor to the next space.
Step 15 Continue To Next Tier
The cursor automatically appears
on NO. Select ENTER or
ACCEPT to end programming
or
move the curser ▲▼ to YES.
This will allow your to enter another tier to this program, repeating steps 6 - 14 to program second
tier.
◄ CREATE NEW PROGRAM
◄ EDIT PRODUCT
◄ DELETE PROGRAM
CancelUpDownOn/Off
Light
Step 16 After programing the last tier, the
computer will automatically advance the screen to program more
products. If no other products
need to be programmed, select
CANCEL three times to advance
screen to the boot up screen.
◄ MANUAL MODE
◄ RECIPE MODE
◄ PROGRAMMING
TIME DATE TEMP STATUS
12:00 01/01/01 325 STANDBY
CancelUpDownOn/Off
Light
Step 17 Boot-up Screen
You may now preheat the oven
for any product you have programmed.
Step 18 Select MANUAL or RECIPE
MODE to run oven
®
Deleting A Platinum PROGRAMMING
◄ PROGRAM PRODUCT
◄ EDIT ACCESS CODE
◄
CONFIGURE OVEN OPERATION
CancelUpDownOn/Off
Light
CancelUpDownOn/Off
◄ CREATE NEW PRODUCT
◄ EDIT PRODCUT
◄ DELETE PRODUCT
Light
Deleting an Existing Program
After entering Access Code
Select: PROGRAM PRODUCT
then choose, DELETE PRODUCT
Select the product you wish to
delete, when nished, Press the
CANCEL button.
17
Page 18
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 qualied
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.
WARNING
MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS
MEMBRANES AND CLOTHING. PRECAUTIONS SHOULD BE TAKEN TO
CAUTION
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.
18
Page 19
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.
SymptomsPossible Cause
No power to cord outlet
Power indicator is
not lit
Oven will not heat
Oven motor will not
run
Product burning
Product is under
done
Oven unplugged from outlet
Failed Power cord or plug
Failed power switch
Failed indicator light
Power Switch is not “ON”
Failed Transformer
Failed Probe
Failed Circuit board
Failed Contactor
Failed Over-temperature Thermostat
Failed Element
Power Switch is not “ON”
Failed Transformer
Failed Contactor
Failed Motor
Product is cooked too long
Failed Probe
Failed Circuit board
Product is not cooked long enough
Failed Probe
Failed Circuit board
Possible CauseTest
Product is cooked too
long
Failed ProbeCheck probe for proper resistance*
Failed Circuit board
Failed Transformer
Failed Contactor
Failed Motor
Failed or disconnected
safety thermostat
Failed Element
No test available, operational
condition
Conrm that Circuit board is getting
correct voltage and putting out
correct voltage*
Check both Primary and Secondary
coils for correct voltage*
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*
Conrm that motor is getting correct
voltage*
Check across the thermostat
connectors for continuity*
Conrm 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
CAUTION
TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL
WARRANTIES.
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
WARNING
REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC
POWER SUPPLY.
19
Page 20
REV.
1
G
2
3
4
5
6
10
11
12
2
1
B
H
C
D
F
POSITION
SWITCH
E
D
C
B
A
Manufacturing
Company
DATE/ECO
WIRE TO DOOR SWITCH NC WAS NO;
1/17/2008
UPDATED MODEL DESIG. TO STAR.
ADDED CONTACTOR #2, REVISED
5/7/2009
WIRING @ MOTOR RELAY AND TIMER
ECO 7946
3/20/12
ADDED SHEET 2: INDUCTION TOP
ECO 11482
-AP
CONTROL
-AP
5
12
4
3
2
1
RTD
DWN. BY :
DESCRIPTION:
CAD FILE :
12
REVISIONS
DESCRIPTION OF CHANGE
TO MATCH PRODUCTION
TIMER
10
9
8
7
D
6
5
4
3
2
1
XFORMER WIRED FOR 208V
TO CHANGE TO 240V
DISCONNECT RED 208 LEAD &
CONNECT ORANGE 240 LEAD
TO POWER SWITCH
DO NOT CONNECT BOTH
DWN. DATE :
CONV OVEN 7500 WATT-AP CONTROLS-RT3O RANGE TOP-208/240V
FROM ACAD
11
BUZZER
POWER
SWITCH
DWG. NO:
DR
JMM
DJS
JMM
C
HEAT
240
C
REV. BY :
2M-61127-11
10
9
D
NC
DOOR
NO
SWITCH
C
TOP
ON
C
D
B
208
24
D
PULSE MODE
LIGHT 24 VAC
REV. DATE :
PULSE
MOTOR
RED
CHK. BY :
9
WHITE
T7-T4
RED
MOTOR
CONTACTOR
BLUE
SHEET
8
M
T9
BLUE
BLACK
HEAT LIGHT
24VAC
#1
CONTACTOR
2.5 KW
2.5 KW
2.5 KW
1
8
7
6000W
P1
24VAC
24V
#2
LO
2-SPEED
SWITCH
HIGH
1
HEAT ELEMENT
2
L3L2L1
TERMINAL
2
3
BLOCK
6
2
3
4
1
5
3
4
2
BR2
BR3
BR4
4
3
D
THERMOSTAT
6 HEAT SWITCH
3
4
MOTOR
5
PILOT LAMP
6
CONTACTOR
7
POWER SWITCH
9
SPEED UNIT
10
MICRO SWITCH
IMPORTANT
RANGE TOP WIRES MUST BE
CONNECTED IN OVEN CONTROL AREA.
SINGLE PHASE
L1
L2
TERMINAL
11
2
3
BLOCK
1
3
5
2
4
6
6
5
BR5
BR6
6
5
3 4
5 6
NO
C
NC
THREE PHASE
1
BR1
HI LIMIT
DISC-STAT
24VAC
C
RED
BLUE
WHITE
1
5
2
SEE SHEET 2 FOR INDUCTION
1667
TO BREAKER
1667
1
1667
5
1
2
4
3
2 1 3 4
3
2
TO BREAKER
H
9
3
4
2
1
G
2 1 3 4
F
E
D
C
B
B
CHK. DATE :
OF
REV:
2
D
7
C
D
12 POLE TERMINAL BLOCK
6
GROUND
LUG
5
4
3
2
A
1
12
H
AP
G
CONTROL
F
5
12
4
POSITION
3
SWITCH
2
1
E
RTD
D
C
B
REVISIONS
10
9
8
-AP
7
6
5
4
3
2
1
B
C
D
12 POLE TERMINAL BLOCK
11
SEE SHEET 1
TIMER
D
XFORMER WIRED FOR 208V
TO CHANGE TO 240V
DISCONNECT RED 208 LEAD &
CONNECT ORANGE 240 LEAD
TO POWER SWITCH
DO NOT CONNECT BOTH
BUZZER
POWER
SWITCH
GROUND
LUG
10
9
8
7
6
IMPORTANT
M
T7-T4
P1
T9
BLUE
D
DOOR
SWITCH
C
HEAT
240
C
C
D
PULSE MODE
LIGHT 24 VAC
B
208
24
D
RED
BLACK
NO
C
WHITE
MOTOR
24VAC
CONTACTOR
BLUE
HEAT LIGHT
#1
CONTACTOR
2.5 KW
2.5 KW
2.5 KW
NC
24VAC
24V
#2
RED
BLUE
WHITE
NC
NO
C
TOP
ON
PULSE
MOTOR
RED
RANGE TOP WIRES MUST BE
CONNECTED IN OVEN CONTROL AREA.
LO
2-SPEED
SWITCH
HIGH
SINGLE PHASE
L3L2L1
TERMINAL
3
BLOCK
6
3
5
1
3
5
2
4
6
3
4
6
5
BR5
BR3
BR6
BR4
6
5
4
3
24VAC
C
HI LIMIT
DISC-STAT
THREE PHASE
1
2
4
1
2
1
BR2
BR1
D
2
L1
1
5
L2
TERMINAL
2
3
BLOCK
4
INDUCTION COOKTOP
208 V
W
W
4
3
3
INDUCTION RANGE TOP
INDUCTION COOKTOP
208 V
ROTARY
SWITCH
2
6
5
ROTARY
SWITCH
1
H
W
W
G
F
E
4
D
ROTARY
SWITCH
ROTARY
SWITCH
3
C
B
A
Manufacturing
Company
DWN. BY :
DESCRIPTION:
CAD FILE :
12
DWN. DATE :
CONV OVEN 7500 WATT-AP CONTROLS-RT3O RANGE TOP-208/240V
1 Q9-60102-136 1 BODY TOP EH & HRDW ALL
2 Q9-60102-1361 1 BODY BACK EH & HRDW ALL
3 Q9-EH-119-2 1 FIREWALL - ASSY ALL
4 Q9-EH-W1237 1 SAFETY STAT BOX ASSY ALL EXCEPT MARINE APPLICATIONS
5 Q9-EH-136 1 SAFETY STAT COVER ALL
6 2K-70801-04 1 SNAP BUSH 3/4 SB750-10 BLK ALL
7 2C-20103-02 2 SCRW SM PLT 10 X .5 PHLSL ALL
8 Q9-60102-1364 1 BODY R/H SIDE EH & HRDW ALL
9 2C-20104-41 4 SCRW MACH 1/4-20X5/8 H/H ALL
10 Q9-EH-209 1 MOTOR MOUNT ALL
11 2C-20202-08 4 WSHR PLT 5/16 LOCK SPLIT ALL
12 2C-20201-09 4 WSHR PLT 5/16 FLAT SAE ALL
13 2C-20301-06 4 NUT HEX 5/16-18 PLTD ALL
14 Q9-EH-104-2 1 BOTTOM SPOT WELD ALL
15 Q9-EH-215-2 1 FRONT - ASSY REVERSIBLE ALL
16 Q9-EH-452-2 1 BAFFLE STD ALL
16 Q9-EH-452-3 1 BAFFLE ASSY STEAM STEAM
17 Q9-EH-374-3 1 CAN ASSY STD -[NEW RACK ALL
18 Q9-60102-1365 1 BODY L/H SIDE EH & HRDW ALL
Part
Number
Qty
Per
Description
IMPORTANT: WHEN ORDERING, SPECIFY VOLTAGE OR TYPE GAS DESIRED PAGE 1
INCLUDE MODEL AND SERIAL NUMBER OF 1
Some items are included for illustrative purposes only and in certain instances may not be available.
1 2R-50800-12 1 DOOR T HANDLE 11 1/2 LNG ALL
2 Q9-60102-1362 1 OUTER DOOR EH NO/LOGO ALL
3 2Q-71301-04 1 WINDOW ASSY 9-5/8X16-5/8 ALL
4 2H-60106-17 1 INSULATION KIT EHS DOOR - ALL
5 Q9-EH-267 2 HINGE COVER ALL
6 Q9-EH-266 1 HINGE BOTTOM ALL
7 2C-20109-15 4 SCRW PHD MS SS 10-32X1/2 ALL
8 2P-70201-01 2 BRNZBR.505IDX.8750DX.175 ALL
9 Q9-EH-265 1 HINGE TOP ALL
10 2P-70201-19 2 BRNZBRFLN1/2IDX5/8ODX3/8 ALL
11 Q9-50313-031 2 HINGE PIN - WELD ALL
12 Q9-60102-370 1 DOOR LATCH ASSY MARINE MODELS
13 2C-20109-30 2 SCRW MS SS 10-32 X .75 PH FLT ALL
14 2C-20109-43 2 SCRW SS 1/4-20 S 3/4 FLTHD PHIL ALL
COMPLETE DOOR ASSY
Q9-51100-53 1 COMPLETE DOOR ASSY W/WINDOW ALL
Q9-F6-423 1 COMPLETE DOOR ASSY W/OUT WINDOW
Part
Number
Qty
Per
Description
IMPORTANT: WHEN ORDERING, SPECIFY VOLTAGE OR TYPE GAS DESIRED PAGE 1
INCLUDE MODEL AND SERIAL NUMBER OF 1
Some items are included for illustrative purposes only and in certain instances may not be available.