Lang ECCO-AP, ECCO-C, ECCO-PP, ECCO-PT, ECCO-SII Service Manual

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Service Manual for the Lang Models:

ECCO-AP, ECCO-C, ECCO-PP, ECCO-PT, ECCO-SII,

ECCO-T

Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203

Phone: 1-800-224-5264 Fax: 1-425-349-2733

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CHAPTER PAGE

1. TABLE OF CONTENTS.......................................................................1

2. READ FIRST ....................................................................................... 2

3. EQUIPMENT DESCRIPTION..............................................................4

4. INSTALLATION...................................................................................6

5. START-UP...........................................................................................7

6. CONTROL PANEL LAYOUT...............................................................8

7. PROGRAMMING TERMS ................................................................... 14

8. PROGRAMMING................................................................................. 16

9. GENERAL OPERATION .....................................................................26

10. TYPICAL OPERATION ....................................................................... 28

11. SEQUENCE OF OPERATION.............................................................32

12. TROUBLESHOOTING......................................................................... 36

13. TECHNICAL DATA.............................................................................. 48

14. WIRING DIAGRAMS...........................................................................53

15. PARTS LIST........................................................................................65

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IMPORTANT READ FIRST IMPORTANT

CAUTION:

DANGER:

WARNING:

NOTICE:

CAUTION: CAUTION:

EACH UNIT WEIGHS 430 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. IMPRO PER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT. UNIT MUST BE INSTALLED IN ACCORDANCE WITH ALL APPL I CABLE CO D E S .

The data plate is located above control panel behind wire mesh screen. The oven voltage, wattage, serial number, wire size, and clearance specifications 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, fire extinguisher systems, must conform to their applicable National, State and locally recognized installation standards.

During the first 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 first few hours of use.

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.

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IMPORTANT READ FIRST IMPORTANT

WARNING:

CAUTION:

NOTICE:

WARNING:

CAUTION:

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.

Service on this, or any other, LANG appliance must be performed by qualified personnel only. Consult your authorized service station directory or call the factory at 1-800-224-LANG (5264), or WWW.LANGWORLD.COM for the service station 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.

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.

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EQUIPMENT DESCRIPTION

Lang Model: ECCO

Electric Full Size Convention Oven

EXTERIOR

•

The oven exterior dimensions are 40” (100 cm) Wide, 27” (67.5 cm) High, 38” (95 cm) Deep. The Top, Front, Back, and Sides are constructed of stainless steel with an aluminized bottom.

•

The oven 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 efficiency and reduced heat loss.

INTERIOR

•

The oven cavity dimensions are 29” (72.5 cm) Wide, 20” (50.84 cm) High, 21” (53.38 cm) Deep.

•

The oven is designed for a maximum of five shelves and comes with five Chrome Plated Racks.

•

The interior of the oven is constructed of porcelainized stainless steel.

OPERATION

•

The ECCO oven is a forced air convection oven with a adjustable vented oven cavity.

•

The air is driven by a 1/3 HP fan motor.

CONTROLS

•

The ECCO is available either with the Lang Accu-Plus (ECCO-AP), “Purple” Computer (ECCO-C), “Purple Plus” Computer (ECCO-PP), “Platinum” Computer (ECCO-PT), Selectronic (ECCO-SII), Accu-Temp (ECCO-T):

ECCO-AP

•

Easy to use manual control knobs.

Pulse and two speed fan.

Solid State temperature sensing and controls.

ECCO-C

•

Complete Computerized Controls with a Manual Override system.

Programmable up to 10 products with four “tiers” for each program.

Independent Shelf Timers for each Shelf.

Load Control through use of Cooking Curves.

Shelf Compe nsation Timing for uni form baking.

Single speed fan.

ECCO-PP

•

The Purple Plus offer the same great one touch system of the Purple, coupled with the advanced

baking capabilities of the new Platinum.

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ECCO-PT

•

ECCO-SII

•

ECCO-T

•

EQUIPMENT DESCRIPTION CONT’D

Icon-driven (touch) panel allows for easy operation, also includes a manual

override system.

Day-Part Memory capabilities allow operators to “recall” the last daily

selections automatically.

Programmable up to 99 products, advanced baking capabilities include: a

12:59:59 timer with ten “tiers”.

Independent Shelf Timer for each Shelf.

Load Control through use of Cooking Curves.

Shelf Compe nsation Timing for uni form baking.

Dual speed fan.

Complete Computerized Controls.

Solid State temperature controls.

Digital Display

Easy to use manual control knobs.

Pulse and two speed fan.

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INSTALLATION

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 loss or damage, which 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 Lang Manufacturi ng Company. File your claim with the carrier. Prior to un-crating, move the oven as near 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.

LEG INSTALLATION

Legs are available for both the single and double deck installations. Single deck installations require a 27inch leg. Double deck installations require 6-inch legs or casters.

To install the 27-inch legs, place some cardboard on the floor and gently tip the oven onto its back. Fasten two legs to the oven's front corners using the four 5/16 inch bolts provided in the leg kit. 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 last 27-inch leg onto the oven body on the control side rear. Gently lift the oven rear, remove the leg set to support the oven center and install it on the last rear corner.

To install the 6-inch legs or casters, attach the leg or caster to the leg supports supplied in the oven by following the instructions in the box, then attach the leg support to the oven.

The adjustable feet on the bottom of each leg may be screwed in or out as necessary to level the oven.

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.

ELECTRICAL CONNECTION

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 field converted to operate on a 240-volt power supply. To convert the oven to 240 volt, remove the jumper wire located on a terminal strip located inside the lower portion to the control compartment. On newer oven a toggle switch is provided at the back of the unit for this purpose. With 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. This oven 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 in the Technical Data portion of this manual or to the wiring diagram for proper wire size and grouping.

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START-UPS

ECCO-AP / ECCO-C / ECCO-PP / ECCO-PT / ECCO-SII / ECCO-T

Convection Oven Start-Up

1) Verify connections at plug and terminal block

2) Incoming Volt - Single Phase L1-L2______ Three Phase L1-L2______ L2-L3______ L3-L1______

3) Amp draw L1______

L2______ L3______

4) Motor amp draw ______

5) Are programs correct? Yes No

6) Verify actual temperature at 350 °F ________ °F.

Note: Install thermocouple wire in center of oven cavity. Let oven cycle off and on 3 times before recording temperature.

Set manual program in the comp uter for 350 °F

Model #_______ Date_______ Serial #________

Store #___________ Tech Name___________________ Contact_______________ Company _________________________ Store Phone #___________ Service Company Phone #______________

Address_____________________

______________________ ______________________

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CONTROL PANEL ECCO-AP

Page 10

CONTROL PANEL LAYOUT ECCO-C

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CONTROL PANEL LAYOUT ECCO-PP

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CONTROL PANEL LAYOUT ECCO-PT

When scrolling through

menus, this key will take you to the previous screen. When programming, this key will advance you to the next step.

Moves up through the alphabet, numerals and icons.

Moves down through the alphabet, numerals and icons.

Inspection light feature. Light will turn off automatically.

Turns the oven on and off. When the oven is on, the display screen will light up.

FUNCTION KEYS: Keys are active when a program option is displayed.

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CONTROL PANEL ECCO-SII

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CONTROL PANEL ECCO-T

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CONTROL PANEL BUTTONS

PROGRAMMING TERMS

1 -0

A - E

Man Prog

READ/CLEAR

Temp

Product Buttons. These are the buttons where the product programs are stored. Pressing a Product Button will heat the oven to the programmed temperature. Shelf Buttons. The control is capable of timing each shelf individually. Pressing a Product Button then a Shelf Button will start the countdown timer. The MANUAL PROGRAM button allows the operator to enter a temporary product program without being required to input the programming code. The temporary program is erased when the oven is turned off or when a new program is entered. Time and temperature are the only parameters that can be entered in the Manual Program mode. The READ/CLEAR button has several functions.

•

It is always the first button pressed when entering

programming codes.

•

Pressing it twice then pressing a Product Button will "read-

back" the program in that product button.

•

Pressing and holding the button down until "

88888

" appears

in the display will cancel the current mode of the control and return the display to "

Enter

". When the Temperature Recall Button is pressed, the display will indicate the internal oven temperature. When released the display will revert to the previous readout.

PROGRAMMING TERMS

Cooking Curve

Cooking curve is a function of the computer that controls the cooking time. If the temperature of the oven is lower than the programmed temperature, the control will slow the timer down to compensate for the lower cooking temperature. Cooking Curves from 0 - no time adjustment to 7 - maximum adjustment are available. Cooking Curve 3 is the most commonly used. However, as a general rule the longer the cooking time the lower the cooking curve, the shorter the cooking time the higher the cooking curve.

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PROGRAMMING TERMS CONT’D

FAN FUNCTION

TIER

The convection fan has two programmable options. Fan On (Fan 1) runs the convection fan continuously. Fan Off (Fan 0) leaves the fan off until heat is called for by the control. In a convection oven, the fan must come On whenever the heat comes On. The convection fan can not be turned Off continuously.

"Tiered" programming is the ability to change the cooking temperature or fan function during the cooking cycle. As an example, some products require the fan to be Off for the first half of the cooking cycle then turn On for the last half, Tier 1 would be programmed with the fan in the Off mode then Tier 2 would be fan On. The Tier lamps located below the display (labeled T1, T2, T3, and T4) will illuminate to indicate which Tier is being programmed or which Tier the program is in during the cooking cycle.

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PROGRAMMING ECCO-C

Programming Made Easy

The Lang Purple Oven

Single Tier Programs

Note: Make sure the oven is ON. There are 3 Steps to Programming the Lang Purple Oven: 1) Use the “Password” to enter the Programming Mode, 2) Programming, and 3) exiting the Programming Mode.

Entering the Program Mode:

1. The display should read “Enter” before proceeding. If it does not, then hold the Read/Clear button down just until “ 8’s, remove your finger and “

2. Rapidly press the following buttons: “Read/Clear,” 1,6,2,7,3,8.

88888

Enter

” appears on the display. When you see the

” will appear on the display.

3. The display will now read “

PROD

.”

Programming a Product Button:

4. Press the number button you wish to program (program 1-10).

5. The display will now read “ to erase a preset program.

6. The display will now read “

7. The display will now read “ press 0 if the program requires the fan OFF.

8. The display will now read “ seconds. If the program requires minutes only, enter “00” after entering the minutes to indicate zero seconds.

9. Now press the “E” button. This will lock in your just entered program and ask you for a new product button to program. If you have more programs to enter, go back and follow steps 4-9. If you are finished, proceed to step 10 to exit the programming mode.

000°F

.” Enter the new program baking temperature or 000

CC0-7 Fan01

0:00:00

.” Enter the new cooking curve (CC) number.

.” Press 1 if the program requires the fan ON, or

.” Enter the baking/cooking time in minutes and

Exiting the Programming Mode:

10. To exit the programming mode, simply press the “Read/Clear” button. The display will now read “

program to operate the oven in the baking mode.

Enter

.” You are now in the normal operation mode. Press any preset

Note: Once you have exited the programming mode, you can double check your preset programs by quickly pressing the “Read/Clear” button twice, and then quickly press the product number. The program will then come up on the display, reading the program step-by-step.

Page 18

PROGRAMMING ECCO-C CONT’D

ECCO-C PROGRAMMING CODES

Below are codes, which will allow you to configure the display or aid in the operation, and troubleshooting of the oven. The readout must display readout displays any other word, reset the computer by pressing and holding the display reads

“88888”

The control allows for a 3-second delay between each button push, if a delay of longer than 3 seconds has occurred, the programming code must be re-entered. The instructions call for pressing exactly what is shown under "PRESS".

CODE DESCRIPTION PRESS

•

OPERATIONAL

Recall time remaining on a shelf Shelf Cancel a shelf timer R/C, R/C, Shelf

•

DISPLAY MODES

Countdown timer display R/C,4,8,4,8,4,8

"ENTER"

before the computer will accept any programming code. If the

then release. Display should now read

“ENTER”

“R/C”

button until

Shelf in use display R/C,0,9,0,9,0,9 Internal oven temperature display R/C,8,7,8,7,8,7

•

PROGRAMMING

Enter programming mode R/C,1,6,2,7,3,8 Recall an existing product program R/C, R/C, P (Product programmed) Erase a product program R/C,1,6,2,7,3,8 (P) (000) Model identification R/C, D,C,D,C,D,C Fan Setting ( HI or Both) R/C,E,D,C,B,A,1(high),2 (both) Program download (Contact Factory) R/C, A, B, C, D, E, P

•

MAINTENANCE

Actual oven temperature Return to ENTER

•

SHELF COMPENSATION

Enter shelf co mpensation mode R/C, C, B, C, B, C, B Set shelf compensations (I.E.) A,2,3,A Return to ENTER R/C

R/C,3,4,5,6,7,8 R/C

Page 19

ACTION DISPLAY

Turn the power switch on. If the oven is already on, press the Read / Clear key until the following screen is displayed.

Enter access code “

Select

“C”.

Select a number from 0-9 and press the key corresponding to that number.

If a product Key selected already has a program, the screen

will read.

Enter a desired cooking / baking temperature. The screen will automatically advance to the next display.

Enter the cooking time and then press the next screen.

Enter the desired cooking curve. (Refer to sections 6.3 and

6.7 for more detail)

Select Fan speed. (Hi=1700 rpm, Low=1400)

Select Fan Pulse rate. (0 to 100%). 0=off unless calling for heat. 100=on at all time.

NOTE:

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) If your press 1 you will go through the same sequence as outlined above. If you press 2 the next display will automatically appear.

Any number between 0-100 means that the fan

1 6 2 7 3 8”.

to advance to

“E”

PROGRAMMING ECCO-PP

SELECT PRODUCT OR

READ/CLEAR TO

PROGRAM

XX:XXPM XXXF

A: SET TIME B: SET DATE C: PROGRAM PRODUCTS D: NEXT MENU

PRODUCT PROGRAM MODE

SELECT PRODUCT

NUMBER 0-9

ENTER COOKING TEMP

100 TO 450 F

NOX T1 XXXF

EDIT PRODUCT?

1=EDIT OR 2=DELETE

NXX TX XXXF CX

XX:XX:XX PXXX F-XX

ENTER COOKING TIME

HR:MIN:SEC

NOX T1 XXXF CO

ENTER COOKING CURVE

0 TO 100% NOX T1 XXXF CXX XX:XX:XX PXXX F-XX

ENTER FAN SPEED

1=HI 2=LOW NOX T1 XXXF CXX XX:XX:XX PXXX F-XX

ENTER FAN PULSE RATE

1 TO 100%

NOX T1 XXXF CXX

XX:XX:XX PXX F-XX

CONTINUE TO TIER 2

1=YES 2=NO NOX T1 XXXF CXX XX:XX:XX PXXX F-XX

A: SET TIME B: SET DATE C: PROGRAM PRODUCTS D: NEXT MENU

Page 20

STEP Press the button

to Turn oven “ON

”

PROGRAMMING ECCO-PT

STEP

Select Time/Date/Program

STEP

Select

STEP

Program Computer

Enter Access Code

ABCDEF

is the code.

Run Oven

Time / Date / Program

TIME DATE TEMP STATUS

00:04 01/01/09 96 STANDBY

Display Product

Timer Only

Set Time / Date

Program Computer

TIME DATE TEMP STATUS

00:05 01/01/09 96 PROGRAM

Press the up & down arrow keys to scroll through letters and numbers, then pr ess ‘Enter’ to m ove the cursor to the right.

Example: Press up once for an A, then press ‘Enter’. Press up

twice for a B, then press ‘Enter’. Continue through F. The screen will advance automatically when the code is entered correctly.

Enter Access Code

Use keys to select

then press enter

Enter

Press Cancel to Quit

Page 21

PROGRAMMING ECCO-PT CONT’D

STEP

Select

STEP

Select

Program Products

Create New Product

Program Products

Edit Ready Zone

Edit Access Code

Enable Manual Product

Configure Time of Day

Create New Product

Edit Product

Delete Product

STEP

“Select Product Icon” is the first screen when entering a product program. Scroll down until you find an Icon that best resembles your product. Scroll up to go backward through the Icon list. Press ‘Enter’ to select your Icon, and move to the next screen.

Edit Product

Select Product Icon

Use keys to select

then press enter

Enter

Page 22

PROGRAMMING ECCO-PT CONT’D

STEP

“Select Product Name” is where you spell the name using the up and down arrows to select each letter. Then press ‘Enter’ to m ove the cursor to the next space and a new letter.

_unconfigured is the

Note:

name that must be replaced with your product’s name or blanks, when the product name is shorter than 13 letters.

Example:

only _unconfigured.

must be replaced by blanks). A blank can be found before ‘A’

or after ‘9’ when scrolling. There are 15 spaces available for your product’s name.

APPLE PIE replaces

(ured

Select Product Name

_UNCONFIGURED

Use keys to select

then press enter

Enter

Press Cancel When Done

Select Product Temperature

100

STEP

“Select Product Temperature”

Use the up and down arrows to select numbers, press ‘ Enter’ to lock in each ch oice and move the cursor to the next space. The screen will automatically advance after you enter the third number.

Use keys to select

then press enter

APPLE PIE

TIER 1

Enter

Page 23

PROGRAMMING ECCO-PT CONT’D

STEP

“Select Tier Cook Time” Time is entered in hours:minu te s: sec onds. The maximum is 12:59:59. Press ‘Enter’ to advance cursor to the place you want to enter a number.

Example: 45

Press ‘Enter’ twice to advance from hours to minutes, then press the up arrow four times for a 4, then ‘Enter’ to advance the cursor. Then press the up arrow five times for a 5, then ‘Enter’ to advance the cursor. Since 0 is your next two numbers simply press ’Enter’ again twice to advance the cursor.

minutes: 00 seconds

Select Tier Cook Time

00:45:00

Use keys to select

then press enter

APPLE PIE

TIER 1 TEMP: 325F

Enter

STEP

“Select Cooking Curve”

Use the up and down arrows

Select Cooking Curve

000 %

Use keys to select

then press enter

APPLE PIE

to select numbers, press ‘ Enter’ to lock in each ch oice and move the cursor to the next space.

TIER 1 TEMP: 325F TIME: 00:45:00

The cooking curve has been established for your product, enter that number. It must be between 0

Enter

and 100.

Example: 80% (000%) Press ‘Enter’ once to move cursor, scroll up to 8, press ‘Enter’ to move cursor, press ‘Enter’ again since 0 is the number showing and needed.

Page 24

PROGRAMMING ECCO-PT CONT’D

Step

“Select Fan Speed”

The cursor will automatically appear on High, that is your default. Press ‘Enter’ to keep High Fan and advance the screen, or press either the up or down arrow to move the cursor to Low. Press ‘Enter’ to advance to the next screen.

Select Fan Speed

HIGH LOW

Use keys to select

then press enter

APPLE PIE

TIER 1

TEMP: 325F TIME: 00:45:00

COOKING CURVE:

Enter

40%

STEP

“Select Pulse Rate”

Use the up and down arrows to select numbers, press ‘ Enter’ to lock in each ch oice and move the cursor to the next space. The fan pulse rate has been established for your product, enter that number. It must be between 0 & 100. 100% is a default, if you are not sure press ‘Enter’ three times to advance the screen and maintain 100%.

Example: 50% (100%) Scroll Down to get ‘0’, press ‘Enter’ to move cursor, scroll up to 5, press ‘Enter’ to move cursor, press ‘Enter’ again since 0 is the number showing and needed.

Select Pulse Rate

100%

Use keys to select

then press enter

MANUAL MODE

TIER 1

TEMP: 325F TIME: 00:45:00

FAN: HI

Enter

Page 25

PROGRAMMING ECCO-PT CONT’D

STEP

“Correct”?

The cursor automatically appears on YES. The com puter is asking if the program displayed is what you thought you entered. If any part of that program is incorrect, press either the up or down arrows to move the curs or to NO. Press ‘Enter’ when the cursor is at your choice. Y ES will advance the screen, NO will take you back to the beginning and allow you to correct any part of the program you entered.

Correct?

YES NO

Use keys to select

then press enter

APPLE PIE

TIER 1 TEMP: 325F TIME: 00:45:00 FAN: HI RATE: 100%

COOKING CURVE: 40%

Enter

STEP

“Continue to Next Tier”

The cursor automatically appears on NO. Press ‘Enter’ to end programming or move the cursor with the up or down arrows. YES will repeat steps 9 through 15 for each Tier of the program.

Continue to Next Tier?

YES NO

Use keys to select

then press enter

APPLE PIE

TIER 1

TEMP: 325F TIME: 00:45:00

FAN: HI RATE: 100%

COOKING CURVE:

Enter

40%

Page 26

PROGRAMMING ECCO-PT CONT’D

STEP

After programming the last Tier, select NO when asked “Continue to Nex t Tier”? The computer will automatica lly advance the screen to program more products. If no other products need to be programmed, press ‘Cancel’ three times to adva nce screen to the beginning.

STEP

You may now preh eat the oven for any products you have programmed.

Create New Product

Edit Product

Delete Product

Edit Product

Select Run Oven

Run Oven

Time / Date / Program

TIME DATE TEMP STATUS

Page 27

GENERAL

OPERATIONS

Convection ovens constantly circulate air over the product. This strips away the thin layer of moisture and cool air from the top of the product. Heat penetrates more quickly. Cooking times are shortened and cooking temperatures are usually reduced.

To convert standard deck oven recipes to convection oven recipes, reduce the temperature 50 °F and the time by 25%. Make adj ust ments as necessary, depending upon your results.

The lower the temperature the more even the bake.

Check the product halfway through the baking cycle. Look through the door windows. Opening the oven door is not recommended.

If products are brown on the outside and not done on the inside, too high a temperature is being used. Decrease the temperature 15-25 °F.

If products are pulling to the edge of pans or spilling, the oven is not leveled or the pans are warped. Correct as necessary.

Load each shelf evenly. Spaces should be maintained equally between the pan and walls. Front and back. This will allow an even distribution of airflow.

BAKING

Most baking should be done with the vent closed. Open the vent only with high moisture products to avoid seepage around the front of the door.

Always weigh your product. This will give you a more consistent size, color and quality.

Center the pan in the oven. The better the air flow around the product, the better the bake.

The 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 preparation, not the oven.

Place product as close to oven as practical. Open oven doors and load quickly but carefully.

If only one pan is required, load on center shelf. If two pans are required, load on second and fourth shelf. If three pans are required, load on top shelf, bottom shelf, and center shelf. If four pans are required, load on top shelf, bottom shelf, and middle two shelves. If five shelves are required, space evenly in oven. (See page 27 for more detail)

UNLOADING

It is a characteristic of all convection ovens to unload the top shelf before the bottom shelves. The rising of heat and the hot oven ceiling causes the top shelf to bake quicker. This characteristic is more pronounced when baking at higher temperatures and/or for prolonged periods of time.

Page 28

ONE PAN

TWO PAN

THREE PAN

GENERAL CONT’D

FOUR PAN

FIVE PAN

Page 29

TYPICAL OPERATION

ECCO-C STATUS DISPLAY

The Status Display informs the operator of the oven's status. It can be used as a countdown timer, shelf in use or internal oven temperature display during the

cooking cycle (see ECCO-C Programming Codes pg. 16). The Display informs the operator when the oven is ready to bake, or if the oven is above or below the

programmed temperature. Below is a list of displays and their definitions:

ENTER

PrEht

PrEhtPrEht rEAdY

rEAdY

rEAdYrEAdY COOL

COOL

COOLCOOL Hot

Hot

HotHot

" The oven is energized and ready for an operator command. "Stands for

heating to the programmed temperature.

” A product has been selected and the oven has preheated to the

programmed temperature. The oven is ready to load a product.

" The oven's internal temperature is below what is programmed.

" The oven's internal temperature is above what is programmed.

“PREHEAT”

. A product has been selected and the oven is

ShELF

ShELFShELF hELP

hELP

hELPhELP Cont

Cont

ContCont

ErrOr

ErrOrErrOr

" A product selection has been made after the oven has preheated and the

computer is asking which shelf the product is placed on.

" There is a fault in the control system, the computer will not operate until

service is performed.

"Stands for

time being entered. The oven will operate continuously at the programmed temperature.

" An entry has been made during the programming, which the computer

does not understand.

“CONTINUOUS”

. The oven has been programmed without a

ECCO-AP TYPICAL OPERATION SEQUENCE

ACTION RESULT

Turn power switch to ON. Control panel heat call light comes on. Adjust proper temperature, between 140 & 450

degrees and allow to preheat up to 20 minutes. Open oven doors and insert product, set timer up to

60 minutes. Timer beeps continuously when done. Product should now be done.

Oven begins he ating.

Timer begins counting down.

Page 30

TYPICAL OPERATION CONT’D

ECCO-C TYPICAL OPERATION SEQUENCE

ACTION RESULT

Turn power switch to ON. Control panel comes on, disp lay says

ENTER

then

“

ENTERENTER

Press a prod uct button. Display says

heat to the programmed temperature.

Beeper sounds briefly.

Open the oven doors and load the product. Close the door and press the product button again.

Display says Beeper sounds briefly and disp lay says

, motor starts.

”

PREHT

“

READY

“

READYREADY

PREHTPREHT

”

(Preheat), oven begins to

88888

“

8888888888

SHELF

“

SHELFSHELF

and

”

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).

Beeper sounds continuously.

Press the

Open oven door and remove the product, which corresponds to flashing shelf button(s).

flashing

shelf button(s). Beeper stops. Display shows “

Display shows a countdown timer and begins to count toward zero.

DONE

Display shows

shelves carry product or resume count down for shelves that still have product cooking.

DONE

“

DONEDONE

, shelf button( s) flash.

”

READY

” if no other

READYREADY

ECCO-PT TYPICAL OPERATION SEQUENCE

ACTION RESULT

Press the on switch. Control panel comes on, display says

Oven, Time Date Program

Select

“Run Oven”.

Select Product button next to Icon desired. Display says

Beeper sounds briefly.

Select Product to start. Display shows possible product selection for that

Display will show a list of product to choose.

“Preheating to XXXF”.

Display says

temperature.

“Ready”.

“LANG, Run

Select Product to start. Display says Press Product button next to desired shelf. Display will show icon chosen and begin to count

down.

Beeper sounds continuously.

Oven is ready for another product.

Display shows product from that shelf.

“Select shelf”.

“ DONE”

press button and remove

Page 31

TYPICAL OPERATION CONT’D

ECCO-PP TYPICAL OPERATION SEQUENCE

ACTION RESULT

Turn power switch to ON. Control panel comes on, display says

PRODUCT OR READ/CLEAR TO PROGRAM

Press a prod uct button. Display says

XXX F”.

to the programmed temperature.

Beeper sounds briefly.

Open the oven doors and load the product. Close the door and press the product button again.

Press the shelf button(s) which correspond to the shelf positions just left, which the product is loaded (A equals the top shelf and E equals the bottom shelf).

Beeper sounds continuously.

Press the

Open oven door and remove the product, which corresponds to flashing shelf button(s).

flashing

shelf button(s). Beeper stops. Display shows “

Display says

START ”

Beeper sounds briefly and disp lay says

OVEN SHELVES PRODUCT X”

Display shows a countdown timer and begins to count toward zero.

Display shows

X, REMOVE PRODUCT”

PRODUCT TO START

product or resume count down for shelves that still have product cooking.

“PRODUCT X PREHEATING TO

Motor starts and oven begins preheating

“READY SELECT PRODUCT TO

“DONE PRESS SH ELF BUTTON

, shelf button(s) flash.

READY SELECT

” if no other shelves carry

“SELECT

ECCO-SII TYPICAL OPERATION SEQUENCE

ACTION RESULT

Turn power switch to ON. Digital display reads “ Press Temp button and use arrows to adjust to

proper Temp between 150 & 450.

Beeper will sound for 3 seconds when preheated.

Open doors and insert product. Press Time Button and use arrows to adjust to

desired time. Press Start / Stop Button.

Beeper sounds continuously

Button.

Press Start / Stop

Oven begins heating and displays “

Display will read preheated temperature.

Digital display will start countdown.

000””.

pre

”.

Page 32

TYPICAL OPERATION CONT’D

ECCO-T TYPICAL OPERATION SEQUENCE

ACTION RESULT

Turn power switch to ON. Adjust proper temperature, between 140 & 450

degrees and allow to preheat up to 20 minutes. Open oven doors and insert product, set timer up to

60 minutes. Timer beeps continuously when done. Product should now be done.

Oven begins he ating.

Timer begins counting down.

Page 33

SEQUENCE OF OPERATION ECCO-AP

Power switch turned on.

240/208 VAC across Common terminals on power switch and

Terminal block

240/208 VAC to Common terminals of

240/24-volt transformer energized.

24 VAC across 24 VAC across coil of 24 VAC across thermostat) 24 VAC across Motor contactor closes.

Motor starts.

24 VAC across coil of

Heat contactor

208/240 volts to elements. Oven heats.

“C” “D”

“D”

closes.

“D”

and

and of

and Heat output on board.

(common) of 24 pin

Motor relay

Heat contactor

. (Through door switch)

Motor relay

. (Through door switch and high limit

Terminal block

“B”

terminal of 12 pin

Page 34

SEQUENCE OF OPERATION ECCO-C

Power switch turned on.

240/208 VAC across Common terminals on power switch and

Terminal block

240/208 VAC across any 240/208 VAC to Common terminals of 240/208 VAC across common terminals of 120 VAC to coil of

240/24 volt transformer energized.

24 VAC across 24 VAC across 24 VAC across thermostat) 24 VAC across 240/12 volt transformer energized.

Back-up toggle switch Off.

24 VAC across 12 volts to 24 VAC across coil of Motor contactor closes. 240/208 VAC across NO (Normally open) contacts of

Motor starts.

24 VAC across coil of

Heat contactor

208/240 volts to elements. Oven heats.

Back-up toggle switch Off.

208/240 VAC across coil of

Back-up relay closes.

24 VAC across and 24 VAC across coil of Motor contactor closes. 240/208 VAC across NO (Normally open) contacts of

Motor starts.

Temperature set on back up thermostat. 24 VAC across 24 VAC across coil of Heat contactor closes. 208/240 volts to elements.

TP1

“A”

Back-up relay

“C” “D” “D”

“D”

closes.

“D”

and

and coil of and of

and Common terminals of

and

microprocessor

Back-up Thermostat

and each terminal of back-up thermostat.

Heat contactor

TP4, TP5

motor contactor

Heat contactor

Motor relay

Heat contactor

“B”

and

(common) of 24 pin

Motor relay

Back-up relay

terminal of 24 pin

Motor relay

Back-up toggle switch

.(Through door switch)

. (Through door switch and high limit

TP6

and .

(With door switch energized.)

Terminal block

Back-up relay

Terminal block

Motor relay

“A”

terminal of 24 pin.

Page 35

SEQUENCE OF OPERATION ECCO-PP/PT

Oven plugged in.

208/240 VAC across any “A” and “B” terminal on the terminal block. 208/240 VAC to Control transformer (208-240VAC / 24-12 VAC) and Component transformer 240VAC / 24VAC.

Transformers energize.

24 VAC to any “C” and “D” terminal on the terminal block . 24 / 12 VAC to Circuit Board ( 24 VAC to Circuit Board outputs (

Power Switched turned to “ON”.

Display comes on.

Product selected.

24 VAC across motor output ( 24 VAC across motor HI relay coil. Motor relay closes. 208/240 VAC to motor.

Motor Starts.

24 VAC across heat output ( 24 VAC across heat contactor (through over-temperature thermostat). Heat contactor closes. 208/240 VAC to elements.

Back up toggle switch to “ON” .

208/240 VAC across coil of back up relay coil.

Back up relay energizes.

24 VAC to motor relay. Motor relay energizes. 208/240 VAC to motor.

Motor Starts.

24 VAC to thermostat.

Temperature set on thermostat.

24 VAC to heat contactor. Contactor energizes. 208/240 VAC to elements.

JP40

JP12

JP11

JP11- JP13

) and “D”.

Page 36

Power switch turned on.

240/208 VAC across Common terminals on power switch and

Terminal block

240/208 VAC to Common terminals of

(through fuses).

240/24-volt transformer energized.

24 VAC across 24 VAC across pins 1 & 2 on circuit board. 24VAC across Motor output on circuit board and “D”. 24 VAC across coil of Motor relay closes.

“C”

and

Motor starts.

24 VAC across Heat output on circuit board and “D”. 24 VAC across coil of

Heat contactor

208/240 volts to elements. Oven heats.

closes.

SEQUENCE OF OPERATION ECCO-SII

“B”

terminal of 12 pin

“D”

(common) of 24 pin

Motor relay

Heat contactor

(through door switch).

Motor relay

(through over temperatu re the rm o stat).

Terminal block

Page 37

TROUBLESHOOTING ECCO-AP

HINT:

Confirm that all Circuit Breakers are in the “ON” position.

NO MOTOR

PROBABLE CAUSE CORRECTIVE ACTION

Verify that Fan switch is in “ON” position (In pulse position motor

Defective Fan Switch

Defective Fuses

Defective Transformer

Defective Motor Relay

Defective Door Switch

Defective Motor

will only cycle when oven calls for heat).

Check fuses for normal operation.

Check transformer for normal operation.

Check motor relay for normal operation. (24VAC 35 Ω)

Check door switch for normal operation.

Check motor for normal operation. (P1-T9 low, P1-T7/T4 high)

NO HEAT

PROBABLE CAUSE CORRECTIVE ACTION

Check that elements are getting power.

Defective Elements

Defective Transformer

Defective Probe

Defective Heat Contactor

Defective Circuit board

Confirm that Elements are working correctly. (See Technical Data)

Check transformer for normal operation.

Replace if necessary.

Confirm that probe has proper resistance for the correct temp. (See Technical Data)

Confirm that Contactor is getting correct voltage.

Confirm that Contactor is operating properly. (24VAC 6Ω)

Confirm that Heat Call light is on.

If no light is detected:

Check 12-position switch for normal operation. (See Technical Data)

If light is detected:

Check for 24VAC across heat output and “D” on 12 Pole terminal.

If voltage is not present:

Replace Circuit board.

If voltage is present:

Check over temperature thermostat for proper operation.

Check door switch for normal operation.

Page 38

TROUBLESHOOTING ECCO-C

To help troubleshoot the oven you should perform the following “Manual Override” test:

Open drop down door located on the lower right side, directly below front panel.

Turn back up toggle (on/off) switch to “on” position.

Turn main power switch to “on” position.

Check oven for normal operation.

NO DISPLAY

PROBABLE CAUSE CORRECTIVE ACTION

Power switch is not turned on Defective power switch Defective back-up relay

Turn power switch on.

Check power switch for normal operation. Replace as necessary.

Check relay for normal operation.

Check coil for 24 VAC.

If 24 VAC is measured.

Check coil for 7.2 KΩ.

Replace as necessary.

If 24 VAC is not measured.

Verify that manual override switch is in “off” position.

Check manual override switch for normal operation.

Check wires for any shorts.

Turn oven off and:

Page 39

TROUBLESHOOTING ECCO-C CONT’D

PROBABLE CAUSE CORRECTIVE ACTION

Defective control transformer (12 VAC).

Defective rectifier

Check transformer for normal operation.

NOTE:

Unplug secondary side of control transformer from CPU before

performing any tests.

CAUTION:

TURN UNIT OFF BEFORE CHECKING ANY RESISTANCE.

Check primary coil for 208/240 VAC and 630 Ω. Check secondary coil for no less than 10.5 VAC and 1 Ω.

If voltage is measured on primary:

Check for vol t age on secondary.

Replace transformer.

If voltage is not measured on primary:

Check wires for any shorts.

Check for no less than 10.5 VAC on

and 5 VDC on

TP1

TP2

If correct voltage is present at unplug both ribbon connections from CPU and re-measure at

If voltage remains low at

If voltage a t plug ribbon back in to CPU and disconnect from Interface board.

Re-measure at

If voltage dropped to below 5 VDC replace ribbon cable (31110-01).

If voltage remains at 5 VDC, plug ribbon back into Interface board and measure for 5 VDC at

If voltage is present at the

If LED segment does not illuminate or the LED is blank, replace LED.

button on board if LED’s come on replace Interface board.

R/C

increased to 5 VDC when ribbon was unplugged,

TP2

TP3

and present, but low at

TP1

replace CPU (40102-311).

and display is still not on, press and hold

At this point you should have a display.

TP2

Page 40

TROUBLESHOOTING ECCO-C CONT’D

NO FAN-Manual Mode

PROBABLE CAUSE CORRECTIVE ACTION

Defective 240/24 VAC transformer

Back-up relay not energizing

Check for 24 VAC on “C” and “D” of the terminal block.

If 24 VAC is not measured:

Check secondary coil for 1 Ω.

Check primary coil for 77 Ω.

Replace transformer.

If 24 VAC is measured:

Check back-up relay for normal operation.

Check for 240 VAC on relay coil.

If 240 VAC is measured:

Check back-up relay coil for 7.2 K Ω.

Replace if defective.

If 240 VAC is not measured:

Check back-up switch (SPDT) for normal operation.

Replace if defective.

Check for 24 VAC at contactor or relay coil.

Turn off and:

Turn unit off and:

Motor contactor not energized

If 24 VAC is not measured:

Check door switch for normal operation.

Check door switch for continuity.

Replace or adjust door switch.

If 24 VAC is measured:

Check contactor coil for continuity.

Replace if defective.

Turn oven off and:

Turn unit off and:

Page 41

TROUBLESHOOTING ECCO-C CONT’D

PROBABLE CAUSE CORRECTIVE ACTION

No voltage across contactor points

Check 208/240 VAC across “C” terminals of contactor.

If 208/240 VAC is not measured:

Check connection to main contactor (heat contactor).

Check circuit breaker.

If 208/240 VAC is measured:

Check across “NO” contacts. Should have 208/240 VAC.

Replace if defective.

Note: Motor should now be operating.

NO MOTOR COMPUTER MODE

PROBABLE CAUSE CORRECTIVE ACTION

No 24 VAC on Interface board

Check for 24 VAC at

If 24 VAC is not measured:

to common (

TP4

“D”

Check for 24 VAC at “NC” contacts on back-up relay.

If 24 VAC is measured:

Check for 24 VAC at

Replace Interface board if defective.

TP5

Page 42

NO HEAT Manual Mode

TROUBLESHOOTING ECCO-C CONT’D

NOTE:

PROBABLE CAUSE CORRECTIVE ACTION

Back-up relay not energizing

Defective thermostat

Defective contactor

Fan must be operating before trouble shooting No heat.

Check for 240 VAC on relay coil.

If 240 VAC is measured.

Check back-up relay coil for 7.2 Ω.

Check “NO” contacts for 24 VAC.

Replace if defective.

If 240 VAC is not measured:

Check back-up switch (SPDT) for normal operation.

Replace if defective.

Turn unit off and check for continuity while cycling thermostat on and off.

Replace if defective.

Check for 24 VAC at heater coil.

Turn unit off and:

Defective elements

If 24 VAC is measured.

Check for continuity through coil.

Replace if defective.

If 24 VAC is not measured.

Check for continuity through hi-temp wires going to over-temp thermostat.

Replace over-temp thermostat if defective.

Check elements for continuity.

Replace if defective.

Turn oven off and:

Page 43

TROUBLESHOOTING ECCO-C CONT’D

PROBABLE CAUSE CORRECTIVE ACTION

Defective over-temp thermostat

Check for 24 VAC on #55 red wire to common

If 24 VAC is not measured:

Check for continuity through over-temp thermostat.

Replace if defective.

NO HEAT Computer Mode

PROBABLE CAUSE CORRECTIVE ACTION

No 24 VAC on Interface board

Check for 24 VAC at

If 24 VAC is not measured:

Check for 24 VAC at “NC” contacts on back-up relay.

If 24 VAC is measured:

Check for 24 VAC at

Turn oven off and:

to ground.

TP4

TP6

“D”

Replace Interface board if defective.

DISPLAY LOCKS UP

PROBABLE CAUSE CORRECTIVE ACTION

“Help” in display

Check probe for proper resistance.

Check that probe connections are secure.

Push “TEMP” button on control board and check to see if temperature rapidly descends. If temp does descend rapidly, replace ribbon cable.

Check to see that contactors/relays are not stuck in the closed position.

Replace contactor if defective.

Check for foreign objects keeping contactor closed.

Page 44

TROUBLESHOOTING ECCO-C CONT’D

PROBABLE CAUSE CORRECTIVE ACTION

“88888” stuck in display

Display has shelf “A”

Check for stuck button b y pressing an y button.

If computer beeps or chirps:

Check control panel transformer (12 VAC) for proper operation.

Check

If computer does not beep or chirp:

Check each button for movement.

Check that p anel label has not been damaged in any way.

Replace button if defective.

Replace panel label.

Read Programming Codes.

for at least 10.5 VAC.

TP1

for at least 4.99 VDC.

TP2

for at least 4.97 VDC.

TP3

ANOMALIES

PROBABLE CAUSE CORRECTIVE ACTION

Oven temp is not the same as Display temp

Check probe for correct resistance.

IF PROBE RESISTANCE IS MORE THAN 10 PROBE.

+/-, REPLACE

ΩΩΩΩ

IF CORRECT RESISTANCE IS MEASURED:

Check across

IF 5 VDC IS MEASURED, OVEN MUST BE CALIBRATED:

Turn off oven and disconnect probe from display board.

Connect a 1 KΩ resistor across probe connection.

Turn on oven and set for actual oven temp.

Locate pot on back of Interface board and adjust display by turning screw, until display reads 360°F.

Note: Clockwise increases, Counterclockwise decreases. Approximately two degrees per turn. May require several minor adjustments

IF 5 VDC IS NOT MEASURED:

Check for 5 VDC at

IF 5 VDC IS NOT MEASURED:

Replace CPU.

for 5 VDC (Must be at least 4.98).

TP3

TP2

Page 45

TROUBLESHOOTING ECCO-PP, ECCO-PT

No motor in computer mode

Note:

In computer mode, the motor runs only when a product button has been selected.

In thermostat mode the motor runs all the time, even when the door is open.

PROBABLE CAUSE CORRECTIVE ACTION

Verify product button has been pushed and display says preheating.

No Motor in computer mode

No motor in manual back-up

Check voltage at motor P1 – T7/T4.

If voltage is present, replace motor.

IF VOLTAGE IS NOT PRESENT:

Verify common and normally open is closed at Hi motor relay.

Verify 24V on coil of Hi motor relay.

Verify 24V at control transformer on the secondary side.

If voltage is not present, check primary side.

Check voltage at motor P1 – T7/T4.

If voltage is present, replace motor.

IF VOLTAGE IS NOT PRESENT:

Verify common and normally open is closed at Hi motor relay.

Verify ribbon cable connections.

Verify 24V on coil of Hi motor relay.

Verify 24V at control transformer on the secondary side.

If voltage is not present, check primary side.

IMPOR TANT NOTICE:

cable or any connector from CPU or Display. Failure to do so will result in damage to the Display board and CPU.

Power must be disconnected at source when disconnecting any ribbon

Page 46

TROUBLESHOOTING ECCO-PP, ECCO-PT CONT’D

PROBABLE CAUSE CORRECTIVE ACTION

Verify voltage at computer transformer.

No Display

Verify 12 VAC across Yellow – Yellow w/ Red stripe.

Verify 24 VAC across Yellow – Yellow.

Verify transformer connections at CPU.

If voltage is present replace CPU.

Can’t enter program in Computer

No Heat in computer mode

(motor must be on)

NOTE:

If voltage is not present:

PRODUCT BUTTON MUST BE SELECTED.

If display is on, but no output from computer, jumper output on CPU. If output comes on, replace CPU.

A button may be stuck in, replace button label. Display has light letters, or blocks on display, adjust contrast. Verify heat contactor is closing, if closed verify amp draw. Verify resistance at coil. If voltage is present at coil, replace contactor.

Jumper JP11 on computer board. If heat contactor comes on, replace CPU.

Page 47

TROUBLESHOOTING ECCO-SII

HINT:

Confirm that all Circuit Breakers are in the “ON” position.

NO MOTOR

Complaint CORRECTIVE ACTION

Verify that Fan switch is in “ON” position (In pulse position motor

Defective Fan Switch

Defective Fuses Defective Transformer

Defective Circuit board

will only cycle when oven calls for heat).

Check Fuses for normal operation.

Check Transformer for normal operation. (See Technical Data)

Check for 24 VAC across Motor output on board and “D” on 12position terminal block.

If no voltage is present:

Confirm that voltage is coming in from transformer.

Replace circuit board.

If voltage is present:

Check motor relay for normal operation. (24 VAC 35Ω)

Check door switch for normal.

Check motor for normal operation. (See Technical Data)

NO HEAT

PROBABLE CAUSE CORRECTIVE ACTION

Check that elements are getting power.

Defective Elements

Defective Transformer

Defective Probe

Defective Heat Contactor

Confirm that Elements are working correctly. (See Technical Data)

Check transformer for normal operation.

Replace if necessary.

Confirm that probe has proper resistance for the correct temp. (See Technical Data)

Confirm that Contactor is getting correct voltage.

Confirm that Contactor is operating properly. (24VAC 6Ω)

Page 48

TROUBLESHOOTING ECCO-SII CONT’D

PROBABLE CAUSE CORRECTIVE ACTION

Confirm that Heat Call light is on.

Defective Circuit board

If no light is detected:

Check 12-position switch for normal operation. (See Technical Data)

If light is detected:

Check for 24VAC across heat output and “D” on 12 Pole terminal.

If voltage is not present:

Replace Circuit board.

If voltage is present:

Check over temperature thermostat for proper operation.

Check door switch for normal operation.

Page 49

TECHNICAL DATA

ELEMENT RESISTANCE

208 Volt

480 Volt

TRANSFORMER RESISTANCE

TRANSFORMER Input Primary Secondary Output

208/24 Volt 208/240 Volt

240/12 Volt 208/240 Volt

208/240-24/12 208/240 Volt 208Volts

Ω

630

240Volts

Ω

12Volts

Ω

CONTACTOR RESISTANCE

CONTACTOR Coil

3 Pole 24 Volt coil

2 Pole 24 Volt coil (P & B) (PP & PT motor)

6 35

Ω

16 60

Ω

Ω Ω

24Volts

Ω

24 Volt 12 Volt

24/12 Volts

RELAY RESIST ANCE

RELAY Coil

240 VAC

7.2 K

Ω

OVER-TEMP THERMOSTAT

OVER-TEMP

Wires Normally closed

DOOR SWITCH

Check switch between “COM” (common) and “NO” (normally open) contacts, insure switch closes approximately 3 to 4 inches before door closes.

BLOWER FAN

Blower fan will rotate clockwise and should have a 5/8“ gap between it and the back wall of the can.

Page 50

TECHNICAL DATA CONT’D

AUTO/BYPASS SWITCH

The Auto / Bypass and Energy switch are located below the controls behind a pull down access panel.

•

Auto/Bypass switch

•

Energy switch

Normally in power to the computer and allow use of the back-up thermostat.

Normally in PROVIDE 8.25 kW heat. Not provided on Steam convection ovens.

“OFF”

“HIGH”

. The

for 11 kW heats.

position will interrupt

“ON”

“LOW”

LINE AMPERAGE, WATTAGE, AND PROPER PHASING

NORMAL AMPS PER LINE

MODEL

NUMBER

ECCO 11.66 37.0 37.0 22.9 28.9 28.9 26.5 16.5 16.5 10.2 56.0 48.6

2ECCO 23.33 60.0 74.2 60.0 55.3 57.7 55.3 26.0 33.0 26.0 112.0 97.2

TOTAL K.W.

CONNECTION

1st OVEN

2nd OVEN

208 VOLT 240 VOLT 480 VOLT 208 V 240V

L1 L2 L3 L1 L2 L3 L1 L2 L3

SERVICE CONNECTIONS

FRONT WIRE CONNEC TIONS

3 PHASE 1 PHASE

LINE 1LINE 2LINE 3LINE 1LINE 2

1,4 2 3 1,3 2,4

1,4,7 2,5,8 3,6 1,3,5,7 2,4,6,8

THREE PHASE

SINGLE

PHASE

WILL

1st OVEN

2nd OVEN

REAR CONNECTION WIRE NUMB ERS

5,8 6 7 5,7 6,8

7 5,8 6 5,7,5,7 6,8,6,8

Page 51

ECCO–PT / PP COOKING CURVE CONVERSION

O l d

S t y l e

P u r p l e

N e w

S t y l e

P l a t i n u m

/ P

u r p l e

P l u s

00% 1 17% 2 26% 3 40% 4 50% 5 56% 6 63% 7 71%

Page 52

TECHNICAL DATA CONT’D

PROBE RESISTANCE

TEMP RESISTANCE VOLT DROP TEMP RESISTANCE VOLT DROP

70 80

90 100 110 120 130 140 150 160 170 180 190 200 210 220

° ° °

° ° ° ° ° ° ° ° ° ° ° ° °

556 569 583 596 610 623 637 651 665 678 694 709 724 739 754 769

Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω

1.11

1.14

1.17

1.19

1.22

1.25

1.27

1.3

1.33

1.36

1.39

1.42

1.45

1.48

1.51

1.54

290 300 310 320 330 340 350 360 370 380 390 400 410 420 430 440

° ° ° ° ° ° ° ° ° ° ° ° ° ° ° °

881 897 914 931 948 965

983 1000 1018 1036 1054 1072 1090 1109 1127 1146

Ω Ω Ω Ω Ω Ω Ω

Ω Ω Ω Ω Ω Ω Ω Ω Ω

1.76

1.79

1.83

1.86

1.90

1.93

1.97

2.00

2.04

2.07

2.11

2.14

2.18

2.22

2.25

2.29

230

240

250

260

270

280

Probe is factory checked at 350 °F. Must be completely disconnected from circuit board when measuring

probe resistance. Display will read “

Ω

785

Ω

800

Ω

816

Ω

832

Ω

848

Ω

864

multiplied by 2 milli-amps (.002) to determine voltage drop.

1.57

1.60

1.63

1.66

1.70

1.73

NOTE

HELP

” if probe is open or unplugged. Any probe resistance can be

450 460 470 480 490 500

° ° ° ° ° °

1165 1184 1204 1223 1243 1263

Ω Ω Ω Ω Ω Ω

2.33

2.37

2.41

2.45

2.49

2.53

Page 53

TECHNICAL DATA CONT’D

ECCO-C MODEL STRAPPING

The Front Control panel of the Lang “Purple” computer must be configured to match the model of oven it is being installed in. To configure the front control panel, you must change the arrangement of the

Strapping Bars

has its own strapping configuration, which below for the proper strapping configuration.

located at the bottom of the circuit board just above the ribbon connection. Each model

be set by the service technician. Follow the diagram

must

Page 54

ECCO-C TEST POINT LAYOUT

TECHNICAL DATA CONT’D

TP 1

TP5

TP7

Page 55

WIRING DIAGRAM ECCO-AP 208/240

Page 56

WIRING DIAGRAM ECCO-AP 480

Page 57

WIRING DIAGRAM ECCO-C 208/240

Page 58

WIRING DIAGRAM ECCO-C 480

Page 59

WIRING DIAGRAM ECCO-PP 208/240

Page 60

WIRING DIAGRAM ECCO-PP 480

Page 61

WIRING DIAGRAM ECCO-PT 208/240

Page 62

WIRING DIAGRAM ECCO-PT 480

Page 63

WIRING DIAGRAM ECCO-SII 208/240

Page 64

WIRING DIAGRAM ECCO-SII 480

Page 65

WIREING DIAGRAM ECCO-T 208/240

Page 66

WIREING DIAGRAM ECCO-T 480

Page 67

ECCO-AP

ELECTRIC ACCU-PLUS CONVECTION OVEN

DESCRIPTION

Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 11090-18 Motor 1/3 HP 480 Volt 2 Speed 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed 30200-17 Micro Switch, Oven Door 30301-02 Switch, Toggle, On-On 30303-06 Switch, Toggle, Spring Return 30303-16 Switch, Temperature Control 12 Position 140-450°F Thermostat Safety 490°F Open Contactor 3 Pole 24 VAC 30700-06 Contactor 2 Pole 30 Amp 24 VAC 30701-05 Timer Electric 1 Hour 24V 30800-05 Buzzer Electric Timer 24V 30802-04 Fuse 15 Amp 300 Volt 30900-10 Fuse Holder 15 Amp 30901-08 Transformer 240/24 VAC 31400-10 Transformer 480/24 VAC 31400-15 Pilot Light 28 VAC 31601-07 Lamp Socket 31602-04 Lamp 250 Volt 31603-04 Oven Lamp Lens (Watch Glass) 31604-01 Oven Lamp Lens Gasket 31604-02 Circuit Breaker 208/240 Volt 1-Pole 31800-01 Circuit Breaker 480 Volt 3 Pole 31800-04 Circuit Board Temperature Control 40101-19 Probe Temperature Sensor 41100-08 Turn Buckle Assembly 50312-02 Door Left Hand 51100-45 Door Right Hand 51100-46 Panel Label Accu-Plus 60301- 10 0 Handle Assembly Single-handle Oven 70603-15 Knob Damper Black 70701-25 Knob Temperature / Timer Control 70701-28 Window Assembly 71301-04 Blower Wheel 71500-05

PART NO.

30304-16 30401-09

Page 68

ECCO-C

ELECTRIC COMPUTERIZED CONVECTION OVEN

DESCRIPTION

Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt 30200-03 Motor 1/3 HP 115/208/240 Volt 30200-12 Motor 1/3 HP 480 Volt 2 Speed (After Serial V-90436) 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed (After Serial V-90436) 30200-17 Switch Micro Convection Oven Door 30301-02 Switch Toggle On-Off 30303-06 Switch Toggle Spring Return 30303-16 Thermostat Safety 490°F Open Thermostat 450°F Oven Terminal Block 24 Position Quick Disconnect 30503-01 Relay 240 VAC 30600-02 Contactor 3 Pole 24 VAC 30700-06 Contactor 2 Pole 208/240 VAC 30701-02 Contactor 2 Pole 30 Amp 24 VAC (After Serial V-90436) 30701-05 Fuse 15 AMP 300 Volt 30900-10 Fuse Holder 15 Amp 30901-08 Cable Ribbon Assembly 31110-01 Transformer 480/240 VAC 31400-04 Transformer 240/24 VAC 31400-10 Transformer 240/12 VAC 31400-26 Lamp Socket 31602-04 Lamp Incandescent 250 Volt Clear 31603-04 Oven Lamp Lens (Watch Glass) 31604-01 Oven Lamp Lens Gasket 31604-02 Circuit Breaker 208/240 Volt 1-Pole 31800-01 Circuit Breaker 480 Volt 3-Po le 31800-04 Circuit Board Assembl y Buzzer 40102-10 Circuit Board Front Panel 40102-20 Circuit Board Front Panel Mrs. Fields 40102-21 Circuit Board Microproces sor 40102-44 Circuit Board Upgrade Kit (Only for units before G-71021) 60101-53 Snubber Low Voltage On Coil, 3-Pole Cont ac tor 40705-02 Snubber Hi Voltage Contactor Circuit Feed 208/240V 40705-04 Snubber Hi Voltage Across Poles, 3-Pole Contact 208/240V 40705-05 Snubber Hi Voltage On Coil, 2-Pole Contactor 480V 40705-06 Snubber Hi Voltage Across Pole, 3-Pole Contactor 480V 40705-07 Snubber Low Voltage 24 Pole Terminal Block 480V 40705-08 Snubber Hi Voltage 24 Pole Terminal Block 480V 40705-09

PART NO.

30401-09 30402-27

Page 69

ECCO-C

ELECTRIC COMPUTERIZED CONVECTION OVEN

DESCRIPTION

Suppressor Low Voltage 24 Pol e T erm inal Bl oc k 40705-10 Suppressor Hi Voltage 24 Pole Terminal Block 40705-11 Probe Temperature Sensor 41100-08 Door Handle 11 1/2” Long Black “T” Style (Double Handle Ovens) 50800-12 Door Handle Bracket – Chrome (Single Handle Ovens) 50800-49-1 Door Handle Screw (Single Handle Ovens) 20104-07 Door Handle Washer (Single Handle Ovens) 20104-50 Turnbuckle Assembly (Single Handle Ovens) 50312-02 Door Left Hand (Single Handle Ovens) 51100-45 Door Right Hand (Single Handle Ovens) 51100-46 Panel Label, Purple 60301-42 Panel Label Mrs. Fields 60301-93 Valve Manual Main Water Supply (Steam Units) 70400-02 Valve Manual Water Supply (Steam Units) 70402-08 Valve Solenoid 24/60V Water Supply (Steam Units) 70403-01 Regulator Water Supply (Steam Units) 70404-01 Handle Assembly, Single Handle Oven 70603-15 Knob Thermostat 450°F Oven (not used before D-57000) Knob Damper Black (not used before D-57000) 70701-25 Window Assembly, Oven Door 71301-04 Blower Wheel 71500-05 Blower Wheel (Steam Units) 51100-57 Orifice Water/Steam #60 DRL (Steam Units) 80405-01

PART NO.

70701-19

Page 70

ECCO-PP

ELECTRIC COMPUTERIZED CONVECTION OVEN

DESCRIPTION

Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt 2 Speed 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed 30200-17 Switch Micro Convection Oven Door 30301-02 Switch Toggle On-Off 30303-06 Switch Toggle Spring Return 30303-16 Thermostat Safety 490°F Open Thermostat 450°F Oven Terminal Block 24 Position Quick Disconnect 30503-01 Relay 240 VAC 30600-02 Contactor 3 Pole 24 VAC 30700-06 Contactor 2 Pole 24 VAC 30701-04 Fuse 15 AMP 300 Volt 30900-10 Fuse Holder 15 Amp 30901-08 Cable Ribbon Assembly 31110-13 Transformer 480/24 VAC 31400-15 Transformer 240/12 VAC 31400-26 Lamp Socket 31602-04 Lamp Incandescent 250 Volt Clear 31603-04 Oven Lamp Lens (Watch Glass) 31604-01 Oven Lamp Lens Gasket 31604-02 Circuit Breaker 208/240 Volt 1-Pole 31800-01 Circuit Breaker 480 Volt 3-Po le 31800- 04 Circuit Board Front Panel 40102-24 Circuit Board Microproces sor 40102-26 Probe Temperature Sensor 41100-08 Oven Rack 50200-20 Oven Rack Slide 50200-36 Turnbuckle Assembly 50312-02 Door Left Hand 51100-45 Door Right Hand 51100-46 Panel Label, Purple Plus 60301-116 Valve Manual Main Water Supply (Steam Units) 70400-02 Valve Manual Water Supply (Steam Units) 70402-08 Valve Solenoid 24/60V Water Supply (Steam Units) 70403-01 Regulator Water Supply (Steam Units) 70404-01 Handle Assembly, Single Handle Oven 70603-15 Knob Thermostat 450°F Oven Knob Damper Black 70701-25 Window Assembly, Oven Door 71301-04 Blower Wheel 71500-05 Blower Wheel (Steam Units) 51100-57 Orifice Water/Steam #60 DRL (Steam Units) 80405-01

PART NO.

30401-09 30402-27

70701-28

Page 71

ECCO-PT

ELECTRIC COMPUTERIZED CONVECTION OVEN

DESCRIPTION PART NO.

Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt 2 Speed 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed 30200-17 Switch Micro Convection Oven Door 30301-02 Switch Toggle Spring Return 30303-16 Thermostat Safety 490°F Open Thermostat 450°F Oven Terminal Block 24 Position Quick Disconnect 30503-01 Relay 240 VAC 30600-02 Contactor 3 Pole 24 VAC 30700-06 Contactor 2 Pole 24 VAC 30701-04 Fuse 15 AMP 300 Volt 30900-10 Fuse Holder 15 Amp 30901-08 Cable Ribbon Assembly 31110-13 Transformer 480/24 VAC 31400-15 Transformer 240/12 VAC 31400-26 Lamp Socket 31602-04 Lamp Incandescent 250 Volt Clear 31603-04 Oven Lamp Lens (Watch Glass) 31604-01 Oven Lamp Lens Gasket 31604-02 Circuit Breaker 208/240 Volt 1-Pole 31800-01 Circuit Breaker 480 Volt 3-Po le 31800-04 Circuit Board Displa y 40102-25 Circuit Board Microproces sor 40102-26 Probe Temperature Sensor 41100-08 Oven Rack 50200-20 Oven Rack Slide 50200-36 Turnbuckle Assembly 50312-02 Door Left Hand 51100-45 Door Right Hand 51100-46 Panel Label, Purple Plus 60301-119 Valve Manual Main Water Supply (Steam Units) 70400-02 Valve Manual Water Supply (Steam Units) 70402-08 Valve Solenoid 24/60V Water Supply (Steam Units) 70403-01 Regulator Water Supply (Steam Units) 70404-01 Handle Assembly, Single Handle Oven 70603-15 Knob Thermostat 450°F Oven Knob Damper Black 70701-25 Window Assembly, Oven Door 71301-04 Blower Wheel 71500-05 Blower Wheel (Steam Units) 51100-57 Orifice Water/Steam #60 DRL (Steam Units) 80405-01

30401-09 30402-27

70701-28

Page 72

ECCO-SII

ELECTRIC SELECTRONIC CONVECTION OVEN

DESCRIPTION

Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt (Before F-79818 no pulse fan, Before H-90435 with pulse fan) Motor 1/3 HP 115/208/240 Volt (Before F-79818 no pulse fan, Before H-90435 with pulse fan) Motor 1/3 HP 480 Volt 2 Speed (After F-79819 no pulse fan, After H-90436 with pulse fan) Motor 1/3 HP 208/240 Volt 2 Speed (After F-79819 no pulse fan, After H-90436 with pulse fan) Switch Micro Convection Oven Door 30301-02 Switch Toggle On-Off 30303-06 Switch Toggle Spring Return 30303-16 Thermostat Safety 490°F Open Terminal Strip 3-Pole 30501-02 Contactor 3 Pole 24 VAC 30700-06 Contactor 2 Pole 24 VAC (Before H-90435) 30701-04 Contactor 2 Pole 30 Amp 24 VAC (After H-90436) 30701-05 Contactor 2 Speed Motor 24 VAC (480V Only, before H-90435) 30705-02 Contactor 2 Speed Motor 24 VAC (480V Only, After H-90436) 30705-03 Fuse 15 AMP 300 Volt 30900-10 Fuse Holder 15 Amp 30901-08 Transformer 240/24 VAC 31400-10 Transformer 480/24 VAC 31400-15 Pilot Light 28 VAC 31601-07 Lamp Socket 31602-04 Lamp Incandescent 250 Volt Clear 31603-04 Oven Lamp Lens (Watch Glass) 31604-01 Oven Lamp Lens Gasket 31604-02 Circuit Breaker 208/240 Volt 1-Pole 31800-01 Circuit Breaker 480 Volt 3-Po le 31800- 04 Circuit Board Temperature Control 40101-17 Circuit Board Assembl y Buzzer 40102-10 Probe Temperature Sensor 41100-08 Turnbuckle Assembly 50312-02 Door Left Hand 51100-45 Door Right Hand 51100-46 Panel Label (Before H-90435) 60301-58 Panel Label 2 Speed Motor (Before H-90435) 60301-73 Panel Label (After H-90436) 60301-102 Handle Assembly, Single Handle Oven 70603-15 Knob Damper Black 70701-25 Window Assembly, Oven Door 71301-04 Blower Wheel 71500-05 Bezel Control Board (Before H-90435) 72603-01 Bezel Fiber Spacer (Before H-90435) 20501-01 Bezel Screw, Short Qty. 1 (Before H-90435) 20102-19 Bezel Screw, Long Qty. 4 (Before H-90435) 20102-20 Bezel Washer (Before H-90435) 20201-13

PART NO.

30200-03 30200-12 30200-16 30200-17

30401-09

Page 73

ECCO-T

ELECTRIC ACCU-TEMP CONVECTION OVEN

DESCRIPTION

Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Element ECCO Oven 380 Volt 11000 Watts 11090-30 Motor 1/3 HP 480 Volt (Before F-90435) 30200-03 Motor 1/3 HP 115/208/240 Volt (Before F-90435) 30200-12 Motor 1/3 HP 480 Volt 2 Speed (After H-90436) 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed (After H-90436) 30200-17 Switch Micro Convection Oven Door 30301-02 Switch Toggle On-Off 30303-06 Switch Toggle Spring Return 30303-16 Thermostat Safety 490°F Open Thermostat 450°F Oven Terminal Strip 3-Pole 30501-02 Contactor 3 Pole 24 VAC 30700-06 Contactor 2 Pole 24 VAC 30701-04 Contactor 2 Pole 30 Amp 24 VAC 30701-05 Timer Electric 1 Hour 24V (After H-90436) 30800-05 Timer Mechanical Long Ring (Before F-90435) 30801-01 Buzzer Electric Timer 24V (After H-90436) 30802-04 Fuse 15 AMP 300 Volt 30900-10 Fuse Holder 15 Amp 30901-08 Transformer 240/24 VAC 31400-10 Transformer 480/24 VAC 31400-15 Transformer 380/24 VAC 31400-18 Pilot Light 28 VAC 31601-07 Lamp Socket 31602-04 Lamp Incandescent 250 Volt Clear 31603-04 Oven Lamp Lens (Watch Glass) 31604-01 Oven Lamp Lens Gasket 31604-02 Circuit Breaker 208/240 Volt 1-Pole 31800-01 Circuit Breaker 480 Volt 3-Po le 31800-04 Turnbuckle Assembly 50312-02 Door Left Hand 51100-45 Door Right Hand 51100-46 Panel Label (Before F-90435) 60301-91 Panel Label (After H-90436) 60301-101 Handle Assembly, Single Handle Oven 70603-15 Knob Damper Black 70701-25 Knob Time Control (Before F-90435) 70701-27 Knob Temperature/Time Control 70701-28 Window Assembly, Oven Door 71301-04 Blower Wheel 71500-05

PART NO.

30401-09 30402-27