Lang ECCO-AP Service Manual
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Lang ECCO-AP Service Manual

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See also: Installation Operation & Maintenance
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
www.langworld.com
©Copyright 2000

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  • Page 1 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 www.langworld.com ©Copyright 2000...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER PAGE TABLE OF CONTENTS............... 1 READ FIRST ..................2 EQUIPMENT DESCRIPTION .............. 4 INSTALLATION ................... 6 START-UP................... 7 CONTROL PANEL LAYOUT ............... 8 PROGRAMMING TERMS ..............14 PROGRAMMING................. 16 GENERAL OPERATION ..............26 10. TYPICAL OPERATION ............... 28 11.

  • Page 3: Read First

    IMPORTANT READ FIRST IMPORTANT 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.
  • Page 4 WARNING AND FOLLOW THE DIRECTIONS ON THE LABEL OF THE CLEANER TO BE USED. NOTICE: 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...

  • Page 5: Equipment Description

    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.
  • Page 6 EQUIPMENT DESCRIPTION CONT’D • ECCO-PT ! 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”.

  • Page 7: Installation

    15 days of delivery. All packing material should be kept for inspection. Do not return damaged merchandise to Lang Manufacturing 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.

  • Page 8: Start-Up

    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______...

  • Page 9: Control Panel Layout

    CONTROL PANEL ECCO-AP...
  • Page 10 CONTROL PANEL LAYOUT ECCO-C...
  • Page 11 CONTROL PANEL LAYOUT ECCO-PP...
  • Page 12 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.
  • Page 13 CONTROL PANEL ECCO-SII...
  • Page 14 CONTROL PANEL ECCO-T...

  • Page 15: Programming Terms

    PROGRAMMING TERMS CONTROL PANEL BUTTONS Product Buttons. These are the buttons where the product programs 1 -0 are stored. Pressing a Product Button will heat the oven to the programmed temperature. A - E Shelf Buttons. The control is capable of timing each shelf individually.
  • Page 16 PROGRAMMING TERMS CONT’D FAN FUNCTION 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.

  • Page 17: Programming

    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.
  • 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 "ENTER" before the computer will accept any programming code. If the readout displays any other word, reset the computer by pressing and holding the “R/C”...
  • Page 19 PROGRAMMING ECCO-PP ACTION DISPLAY SELECT PRODUCT OR Turn the power switch on. If the oven is already on, press the Read / Clear key until the following screen is READ/CLEAR TO displayed. PROGRAM XX:XXPM XXXF A: SET TIME Enter access code “1 6 2 7 3 8”. B: SET DATE C: PROGRAM PRODUCTS D: NEXT MENU...
  • Page 20 PROGRAMMING ECCO-PT STEP 1 Press the button to Turn oven “ON ” STEP 2 Run Oven Select Time / Date / Program Time/Date/Program TIME DATE TEMP STATUS 00:04 01/01/09 STANDBY Display Product STEP 3 Timer Only Select Set Time / Date Program Computer Program Computer TIME...
  • Page 21 PROGRAMMING ECCO-PT CONT’D Program Products STEP 5 Select Edit Ready Zone Program Products Edit Access Code Enable Manual Product Configure Time of Day STEP 6 Create New Product Select Edit Product Create New Product Delete Product Edit Product STEP 7 “Select Product Icon”...
  • Page 22 PROGRAMMING ECCO-PT CONT’D STEP 8 Select Product Name _UNCONFIGURED “Select Product Name” is where you spell the name using the keys to select then press enter and down arrows to select each letter. Then press ‘Enter’ to move the cursor to the next space and a new letter.
  • Page 23 PROGRAMMING ECCO-PT CONT’D STEP 10 Select Tier Cook Time “Select Tier Cook Time” 00:45:00 Time is entered in keys to select hours:minutes:seconds. The then press enter maximum is 12:59:59. Press ‘Enter’ to advance cursor to the place you want to enter a APPLE PIE number.
  • Page 24 PROGRAMMING ECCO-PT CONT’D Step 12 Select Fan Speed “Select Fan Speed” HIGH keys to select The cursor will automatically then press enter appear on High, that is your default. Press ‘Enter’ to keep APPLE PIE High Fan and advance the screen, or press either the up TIER 1 down...
  • Page 25 PROGRAMMING ECCO-PT CONT’D STEP 14 Correct? “Correct”? keys to select The cursor automatically appears then press enter on YES. The computer is asking if the program displayed is what APPLE PIE you thought you entered. If any part of that program is incorrect, TIER 1 press either the up or down...
  • Page 26 PROGRAMMING ECCO-PT CONT’D STEP 16 Create New Product After programming the last Tier, select NO Edit Product when asked “Continue to Next Delete Product Tier”? The computer will automatically advance the screen to Edit Product program more products. If no other products need to be programmed, press ‘Cancel’...

  • Page 27: General Operation

    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%.
  • Page 28 GENERAL CONT’D ONE PAN TWO PAN THREE PAN FOUR PAN FIVE PAN...

  • Page 29: Typical Operation

    ErrOr " " An entry has been made during the programming, which the computer does not understand. 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 Oven begins heating.
  • Page 30 ECCO-PT TYPICAL OPERATION SEQUENCE ACTION RESULT Press the on switch. Control panel comes on, display says “LANG, Run Oven, Time Date Program. Select “Run Oven”. Display will show a list of product to choose. Select Product button next to Icon desired.
  • Page 31 TYPICAL OPERATION CONT’D ECCO-PP TYPICAL OPERATION SEQUENCE 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.
  • Page 32 TYPICAL OPERATION CONT’D ECCO-T TYPICAL OPERATION SEQUENCE ACTION RESULT Turn power switch to ON. Adjust proper temperature, between 140 & 450 Oven begins heating. degrees and allow to preheat up to 20 minutes. Open oven doors and insert product, set timer up to Timer begins counting down.

  • Page 33: Sequence Of Operation

    SEQUENCE OF OPERATION ECCO-AP Power switch turned 240/208 VAC across Common terminals on power switch and “B” terminal of 12 pin Terminal block. 240/208 VAC to Common terminals of Motor relay. 240/24-volt transformer energized. 24 VAC across “C” and “D” (common) of 24 pin Terminal block.
  • Page 34 SEQUENCE OF OPERATION ECCO-C Power switch turned 240/208 VAC across Common terminals on power switch and “A” terminal of 24 pin. Terminal block. 240/208 VAC across any “A” and “B” terminal of 24 pin Terminal block. 240/208 VAC to Common terminals of Motor relay. 240/208 VAC across common terminals of Back-up toggle switch.
  • 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 (JP40).
  • Page 36 SEQUENCE OF OPERATION ECCO-SII Power switch turned on. 240/208 VAC across Common terminals on power switch and “B” terminal of 12 pin Terminal block (through fuses). 240/208 VAC to Common terminals of Motor relay. 240/24-volt transformer energized. 24 VAC across “C” and “D” (common) of 24 pin Terminal block. 24 VAC across pins 1 &...

  • Page 37: Troubleshooting

    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 will only cycle when oven calls for heat).
  • 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”...
  • Page 39 TROUBLESHOOTING ECCO-C CONT’D PROBABLE CAUSE CORRECTIVE ACTION ! Check transformer for normal operation. Defective control transformer (12 VAC). 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.
  • Page 40 TROUBLESHOOTING ECCO-C CONT’D NO FAN-Manual Mode PROBABLE CAUSE CORRECTIVE ACTION ! Check for 24 VAC on “C” and “D” of the terminal block. Defective 240/24 VAC transformer If 24 VAC is not measured: Turn off and: ! Check secondary coil for 1 Ω. ! Check primary coil for 77 Ω.
  • Page 41 TROUBLESHOOTING ECCO-C CONT’D PROBABLE CAUSE CORRECTIVE ACTION ! Check 208/240 VAC across “C” terminals of contactor. No voltage across contactor points 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”...
  • Page 42 TROUBLESHOOTING ECCO-C CONT’D NO HEAT Manual Mode NOTE: Fan must be operating before trouble shooting No heat. PROBABLE CAUSE CORRECTIVE ACTION ! Check for 240 VAC on relay coil. Back-up relay not energizing If 240 VAC is measured. Turn unit off and: ! Check back-up relay coil for 7.2 Ω.
  • Page 43 TROUBLESHOOTING ECCO-C CONT’D PROBABLE CAUSE CORRECTIVE ACTION ! Check for 24 VAC on #55 red wire to common “D”. Defective over-temp thermostat If 24 VAC is not measured: Turn oven off and: ! Check for continuity through over-temp thermostat. ! Replace if defective. NO HEAT Computer Mode PROBABLE CAUSE CORRECTIVE ACTION...
  • Page 44 TROUBLESHOOTING ECCO-C CONT’D PROBABLE CAUSE CORRECTIVE ACTION ! Check for stuck button by pressing any button. “88888” stuck in display If computer beeps or chirps: ! Check control panel transformer (12 VAC) for proper operation. ! Check TP1 for at least 10.5 VAC. ! Check TP2 for at least 4.99 VDC.
  • 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.
  • 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.
  • 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 will only cycle when oven calls for heat). ! Check Fuses for normal operation.
  • 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.

  • Page 49: Technical Data

    TECHNICAL DATA ELEMENT RESISTANCE ! 208 Volt 16 Ω 60 Ω ! 480 Volt TRANSFORMER RESISTANCE TRANSFORMER Input Primary Secondary Output ! 208/24 Volt 77 Ω 208/240 Volt 24 Volt 1Ω 630 Ω 1 Ω ! 240/12 Volt 208/240 Volt 12 Volt ! 208/240-24/12 208/240 Volt...
  • 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. • Normally in “OFF”. The “ON” position will interrupt Auto/Bypass switch power to the computer and allow use of the back-up thermostat.
  • Page 51 ECCO–PT / PP COOKING CURVE CONVERSION...
  • Page 52 TECHNICAL DATA CONT’D PROBE RESISTANCE TEMP RESISTANCE VOLT DROP TEMP RESISTANCE VOLT DROP 556 Ω 881 Ω 1.11 1.76 70° 290° 569 Ω 897 Ω 1.14 1.79 80° 300° 583 Ω 914 Ω 1.17 1.83 90° 310° 596 Ω 931 Ω 1.19 1.86 100°...
  • 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 located at the bottom of the circuit board just above the ribbon connection.

  • Page 54: Wiring Diagrams

    TECHNICAL DATA CONT’D ECCO-C TEST POINT LAYOUT TP 1 TP 2 TP 4 TP 3...
  • 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: Parts List

    WIREING DIAGRAM ECCO-T 480...
  • Page 67 ECCO-AP ELECTRIC ACCU-PLUS CONVECTION OVEN DESCRIPTION PART NO. 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...
  • Page 68 ECCO-C 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 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...
  • Page 69 ECCO-C ELECTRIC COMPUTERIZED CONVECTION OVEN DESCRIPTION PART NO. Suppressor Low Voltage 24 Pole Terminal Block 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 –...
  • Page 70 ECCO-PP 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 On-Off...
  • 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...
  • Page 72 ECCO-SII ELECTRIC SELECTRONIC 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 (Before F-79818 no pulse fan, Before H-90435 with 30200-03 pulse fan) Motor 1/3 HP 115/208/240 Volt (Before F-79818 no pulse fan, Before H-90435 30200-12 with pulse fan)
  • Page 73 ECCO-T ELECTRIC ACCU-TEMP CONVECTION OVEN DESCRIPTION PART NO. 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)

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