Lang ECOH-PP User manual

1
ELECTRIC HALF SIZE
COMPUTERIZED
CONVECTION OVEN
ECOH-PP
Installation and
Operation
Instructions
2M-W494 Rev. D 12/03/12
ECOH-PP
IL1475

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
Stacking the Oven. . . . . . . . . . . . . . . . . . . . . . . . . 7
Ventilation & Clearance . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . 8
Oven Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Reversing the door . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Initial Start-Up
Pre-Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
General Operation & Programming
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Daily Operation . . . . . . . . . . . . . . . . . . . . . . . . . .13
Program Menu Record Table . . . . . . . . . . . . . . . . . . . 14
Programming Procedures . . . . . . . . . . . . . . . . . . . . 15-16
Maintenance / Cleaning . . . . . . . . . . . . . . . . . . . . . . 17
Troubleshooting
Symptoms & Possible Causes . . . . . . . . . . . . . . . . . .18
Wiring Diagram
ECOH-PP 208-240V WD61111-147 . . . . . . . . . . . . . . . . 19
ECOH-PP 220-380V, 240V-415V w 2SPD CE WD61111-170 . .20
ECOH-PP 220-380V, 240-415V WD61111-151 . . . . . . . . . . 21
ECOH-PP 480V WD61111-168 . . . . . . . . . . . . . . . . . . 22
Exploded View & Parts List . . . . . . . . . . . . . . . . . . . . . 24-34
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 tech service number 314-678-6315 or visit our website
www.langworld.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
ECOH 25.3” x 30.2” x 25.3” Side: 6”, Back: 6”, Floor: 6” 185 lbs. 225lbs 85
642mm x 766mm x 643mm (84 kg) (102 kg)
30.2”
766mm
25.3”
643mm
53.3”
1353mm
25.3”
642mm
25.3”
642mm
20.8”
529m
28.0”
711mm
25.3”
642mm
3.0”
76mm
Electrical
Connection
28.0”
711mm
30.2”
766mm
STAND OPTIONAL
Front Side View Top ViewRight Side View
IL1454
ElectricalSpecications
Model No VOLTS AC Hz.
MOTOR
AMPS PHASE
AMPS 3PH/
NTRAL
KW
TOT.
AMPS
1 PH
WIRE
1 PH L1 L2 L3
WIRE
3 PH
ECOH-PP2/4BK 240/415 50/60 3.3 3PH 11 7.8 11 10.5 10.5 12
ECOH-PP208BK 208 60 3.3 1/3 7.8 38 8 23 21 23 10
ECOH-PP208BR 208 60 3.3 1/3 7.8 38 8 23 21 23 10
ECOH-PP-208V 208 60 3.3 1/3 7.8 38 8 23 21 23 10
ECOH-PP-240V 240 60 2.6 13 7.8 33 8 20 18 20 12
ECOH-PP208WB 208 60 3.3 1/3 7.8 38 8 23 21 23 10
ECOH-PP240BK 240 60 2.6 1/3 7.8 33 8 20 18 20 12
ECOH-PP240WB 240 60 2.6 1/3 7.8 33 8 20 18 20 12

5
EQUIPMENT DESCRIPTION
Exterior Construction
The Top, Front, Back, and Sides are constructed of stainless steel with an aluminized bottom.
The oven exterior dimensions are:
30” (76.2 cm) Wide,
25.25” (74.3 cm) High,
26.5” (67.31 cm) Deep.
The oven door comes
standard with a high temperature
insulated window equipped with a
polycarbonate handle.
The oven cavity is insulated with high
temperature insulation for efciency
and reduced heat loss.
Interior Construction
The oven is designed for ve shelves
and comes with ve Chrome Plated
Racks.
The interior cooking chamber is
constructed of stainless steel with
dimensions of:
15” (38.1 cm) Wide,
20” (50.84 cm) High,
21” (53.38 cm) Deep.
Operation
The ECOH oven is a forced air convection oven 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.
Technical
Oven operates as shipped 208V, or 240V (single or three phase), or 480V (three phase).
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 portion of this manual).
Floor space required is 42” (106.68cm) Wide, 32.5” (82.55cm) Deep.
The oven weighs approximately 225 lb. (102.5 Kilograms).
The ovens are stackable, stacking kit available upon request.
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.
Depth
Width
Height
Motor Cover
Back-Up Controls
Controls
Door Handle
IL1455
NOTICE

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.
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.
CAUTION

7
INSTALLATION
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
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.
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
IL1430
16” or 28”
Stand
4” Leg
Cardboard
Leg
Mounting Hole
IL1431
Alignment Pins
pn: 2C-20108-11
Alignment Hole

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,reextinguishersystems,mustconformtotheir
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 240/415V,
480-volt (three phase only) source. The Amp draw, KW rating, and phasing can be found in specication
section of this manual or on the nameplate attached to the unit..
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.
WARNING
WARNING

9
8
4
1
5
6
8
8
10
11
1
12
5
4
7
7
6
8
8
8
8
9
INSERT BEARINGS (ITEMS "5") INTO THE HINGES
(ITEMS "1" & "2") AS SHOWN THEN REAM WITH A
.508 REAMER.
ECOH HINGE RELPACEMENT KIT
pn: Q9-50313-030
ITEM NO. QTY. PART NO. DESCRIPTION
50313-031
HINGE PIN WELDMENT
EH-267 EH HINGE COVER
70201-19
70201-01
20109-43
20109-15
eh-198-1
BOTTOM HINGE PLATE ASSY
CR30-148 UPPER HINGE COVER FOR EH
EH-265-1 EH HINGE - TOP - FOR SVC KIT
3
4
5
6
7
8
9
10
11
12
2
2
2
2
2
8
1
1
1
1 EH-266-1
EH HINGE - BOTTOM - FOR SVC KIT
IL1426
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).

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,
Conrm that the thermostat
knob in the back-up controls is
move freely.
USB Connection
Units are now supplied with a
USB connection, located with
the the Back-Up Controls. This
is for future programming needs
of your unit and is not part of
the units initial start-up or daily
operation.
Duringtherstfewhoursofoperationyoumaynoticeasmallamountofsmoke
coming from the oven, and a faint odor from the smoke.
Thisisnormalforanewunitandwilldisappearaftertherstfewhoursofuse.
IL1456
Back-Up Controls
Blower Wheel
NOTICE

11
General Operation & Programming cont.
ECOH-PP 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
Alpha Numeric Display: Displays your interface with the computer.
Product Select Button: Each button can be
programmed for a specic menu, see programming
section to see how.
Shelf Select Button: Press to select which shelf the product will be placed on. “A” is the top position, “E” is the
bottom position.
Manual Program Button: Used when product being
cooked is for one time only.
Read / Clear Button: Used to read programs, clear
programs, and to access program menus.
Typical Operation Sequence
Power Switch
AlphaNumeric Display
Product Select
Shelf Select
Manual Program
Read/Clear
IL1458
Action Result
Turn power switch to ON.
Control panel comes on; display
says “SELECT PRODUCT
or READ/CLEAR TO
PROGRAM.
Press a product button.
Display says “PRODUCT
X PREHEATING TO
XXX F”. Motor starts and
oven begins preheating to the
programmed temperature.
Beeper sounds briey.
Display says “READY
SELECT PRODUCT TO
START ”.
Open the oven doors and load the
product. Close the door and press
the product button again.
Beeper sounds briey and
display says, “SELECT
OVEN SHELVES
PRODUCT X”.
Press the shelf button(s) which
correspond to the shelf positions,
which the product is loaded (A
equals the top shelf and E equals
the bottom shelf).
Display shows a countdown
timer and begins to count toward
zero.
Beeper sounds continuously.
Display shows “DONE
PRESS SHELF BUTTON
X, REMOVE PRODUCT”,
shelf button(s) ash.
Press the ashing shelf button(s).
Beeper stops. Display shows
“READY SELECT
PRODUCT TO START” if
no other shelves carry product
or resume count down for
shelves that still have product
cooking.
Open oven door and remove the
product, which corresponds to
ashing shelf button(s).

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.
KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY. IF SPILLS OCCUR,
CLEAN IMMEDIATELY, TO AVOID THE DANGER OF SLIPS OR FALLS.
CAUTION

13
Daily Operation
Step 1: Turn the Power Switch on by switching
the toggle switch to the up position.
Step 2: Screen will appear as below.
Select the product you wish to bake by pressing
the number key (0-9) for that product.
Step 3: Screen will display:
When the oven reaches the desired temperature,
the screen will display:
Step 4: Open the oven door, place product in the
oven. Close the oven door and press the
program key you are using.
Step 5: The display will now read:
Press the lettered keys indicating what shelves
you placed product on to bake
(A is the top shelf).
SELECT PRODUCT OR
READ/CLEAR TO PROGRAM
XX:XX PM XXX F
IL1459
PRODUCT 1
PREHEATING TO XXX F
XX:XX PM XXX F
IL1460
READY
SELECT PRODUCT TO START
XX:XX PM XXX F
IL1461
SELECT OVEN SHELVES
PRODUCT 1
XXXF XX:XX:XX
XX:XX PM XXX F
IL1462
NO SHELF SELECTED
PRESS E TO CONTINUE
IL1463
If you do not select a shelf, the oven will beep
and the following display will appear:
Press the E Key and the previous display will
appear, again asking to select oven shelves
Step 6: Once a shelf or shelves have been
selected, the display will now read:
At this time, you may select any other pre-set
product program which has the same oven
temperature. A lighted red light next to a
numbered product key indicates that the
program is compatible with the program
selected, and can be run at the same time.
Step 7: When the bake time is concluded, the
oven will beep and the display will read:
Step 8: Once you have completed baking on
one pre-set program, you may change to another
pre-set program by pressing the Read/Clear Key.
The display will now read:
COOKING PRODUCT XX
TIER #1 XX:XX:XX
SELECT PRODUCT
XX:XX PM XXX F
IL1462
DONE
PRESS SHELF BUTTON
REMOVE PRODUCT
XX:XX PM XXX F
IL1465
SELECT PRODUCT OR
READ/CLEAR TO PROGRAM
IL1466
DAILY OPERATION PURPLE PLUS
CONVECTION OVENS
ECOH-PP, ECOF-PP, GCOF-PP,
EHS-PP, ECCO-PP, GCCO-PP

14
PROGRAMMING PURPLE PLUS
CONVECTION OVENS
ECOH-PP, ECOF-PP, GCOF-PP,
EHS-PP, ECCO-PP, GCCO-PP
Product Name
Tier 1 Tier 2 Tier 3 Tier 4
Cooking
Temp
Cooking
Time
Cooking
Curve
Fan
Speed
Pulse
Rate
Cooking
Temp
Cooking
Time
Cooking
Curve
Fan
Speed
Pulse
Rate
Cooking
Temp
Cooking
Time
Cooking
Curve
Fan
Speed
Pulse
Rate
Cooking
Temp
Cooking
Time
Cooking
Curve
Fan
Speed
Pulse
Rate
ex: Biscuits 325°F 12:30 50% HI 100%
Record Your Menus Before Entering Your Program.
Record your specic menu items using the table below, prior to entering them
into your units program. Keep for your records.

15
PROGRAMMING PURPLE PLUS CONVECTION OVENS
ECOH-PP, ECOF-PP, GCOF-PP,
EHS-PP, ECCO-PP, GCCO-PP
Before You Begin Programming
1. For programming new ovens, you must program at least one button (position 2 through 0) before you can delete
or replace the sample program in position one.
2. If you are programming for the rst time after installing a new computer board, or blanking the EPROM, you must
rst complete the “CPU Start Up Procedure” that came with the new computer board before programming the
product buttons
3. In preparation of programming you Purple Plus Oven, rst determine the cooking parameters you will be using
for each product to be programmed. Use the table on the following page to record your programs prior to
entering them into your unit.
CPU Start Up Procedures
If you are programming for the rst time after installing a new computer board, or needed to blank the EPROM, you
will be asked to complete the “CPU Start Up Procedures”. You will be asked to identify the oven you are using,
answer NO to questions regarding Steam and Rack Rotation, and 650°F max temperature.
Programming Procedures
PROGRAMMING PROCEDURES
ACTION DISPLAY
Turn the power switch on. If the oven is already on, press the Read / Clear key until the
following screen is displayed.
SELECT PRODUCT OR
READ/CLEAR TO
PROGRAM
XX:XXPM XXXF
Enter access code “1 6 2 7 3 8”.
ENTER PASSWORD
OR READ/CLEAR
TO DISPLAY PRODUCT
Select “B”.
A: SET DATE / TIME
B: PROGRAM PRODUCTS
C: EDIT ACCESS CODE
Select a number from 0-9 and press the key corresponding to that number. PRODUCT PROGRAM MODE
NOTE: If a product Key selected already has a program, the screen will read. SELECT PRODUCT
NUMBER 0-9
If a product Key dose not have a program, the screen will read.
EDIT PRODUCT?
1=EDIT OR 2=DELETE
NXX TX XXXF CX
XX:XX:XX PXXX F-XX
Enter a desired cooking / baking temperature. The screen will automatically advance to the
next display.
ENTER COOKING TEMP
100 TO 450 F
NOX T1 XXXF
Enter the cooking time and then press “E” to advance to the next screen.
ENTER COOKING TIME
HR:MIN:SEC
NOX T1 XXXF CO
Enter the desired cooking curve. (Refer to sections 6.3 and 6.7 for more detail)
ENTER COOKING CURVE
0 TO 100%
NOX T1 XXXF CXX
XX:XX:XX PXXX F-XX

16
PROGRAMMING PURPLE PLUS CONVECTION OVENS
ECOH-PP, ECOF-PP, GCOF-PP,
EHS-PP, ECCO-PP, GCCO-PP
Programming Procedures continued
PROGRAMMING PROCEDURES CONTINUED
Select Fan speed. (Hi=1700 rpm, Low=1400)
ENTER FAN SPEED
1=HI 2=LOW
NOX T1 XXXF CXX
XX:XX:XX PXXX F-XX
Select Fan Pulse rate. (0 to 100%). 0=off unless calling for heat. 100=on at all time. ENTER FAN PULSE RATE
NOTE: Any number between 0-100 means that the fan will be on that many number of
seconds in a 100-second block. (E.g. 67%= on for 67 seconds in a 100 second block) 1 TO 100%
NOX T1 XXXF CXX
XX:XX:XX PXX F-XX
If your press 1 you will go through the same sequence as outlined above. If you press 2 the
next display will automatically appear.
CONTINUE TO TIER 2
1=YES 2=NO
NOX T1 XXXF CXX
XX:XX:XX PXXX F-XX
If you wish to continue programming a separate menu item, press “B” and repeat the
sequence. If you have completed your programming requirments, press Read/Clear butotn
until the next display apprears
A: SET DATE / TIME
B: PROGRAM PRODUCTS
C: EDIT ACCESS CODE
To begin using your oven, press the appropriate Product Select button. Refer to your Daily
Operations Section of your Operations Manual to learn how to use your program.
SELECT PRODUCT OR
READ/CLEAR TO
PROGRAM
XX:XXPM XXXF

17
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

18
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 tech service 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