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TROUBLESHOOTING ECCO-PP, ECCO-PT CONT’D

NO MOTOR, MANUAL MODE

PROBABLE CAUSE

CORRECTIVE ACTION

Defective back-up toggle
switch

Confirm that toggle switch is in the “ON” position.

Check toggle switch for normal operation.

Defective back-up relay

Check for 208/240VAC at relay coil.

If no voltage is present:

Confirm that points are making.

If voltage is present:

Replace relay.

Defective component
transformer

Confirm that 208/240VAC is feeding primary coil.

Confirm that 24VAC is at secondary coil.

Defective motor relay

Check for 24VAC at relay coil.

If no voltage is present:

Confirm that points are making.

If voltage is present:

Replace relay.

Defective motor

Check for 208/240VAC across P1 and T7/T4.

If no voltage is present:

Confirm that wires have continuity.

If voltage is present:

Replace motor.

NO MOTOR, COMPUTER MODE

IMPORTANT NOTICE:

Before trying to trouble shoot “No Motor in Computer Mode” confirm that motor is

operational in “Manual Mode”.

PROBABLE CAUSE

CORRECTIVE ACTION

Defective output on CPU
board

Check for 24VAC at JP12 for high or JP13 for low (while oven is
calling for heat).

If no voltage is present:

Board is operating correctly.

If voltage is present:

Replace CPU.

https://appliancetechmanuals.com

Содержание ECCO-T

Страница 1: ...500 Merrill Creek Parkway Everett WA 98203 Phone 1 800 224 5264 Fax 1 425 349 2733 www langworld com Copyright 2000 Service Manual for the Lang Models ECCO T ECCO AP ECCO SII ECCO C ECCO PP ECCO PT ht...

Страница 2: ...TION 4 4 INSTALLATION 6 5 START UP 7 6 CONTROL PANEL LAYOUT 8 7 PROGRAMMING TERMS 14 8 PROGRAMMING 15 9 GENERAL OPERATION 25 10 TYPICAL OPERATION 27 11 SEQUENCE OF OPERATION 30 12 TROUBLESHOOTING 34 1...

Страница 3: ...uch as a vent hood grease extractors fire extinguisher systems must conform to their applicable National State and locally recognized installation standards NOTICE During the first few hours of operat...

Страница 4: ...INTO A LIVE RECEPTACLE BEFORE REPLACING ANY PARTS DISCONNECT THE UNIT FROM THE ELECTRIC POWER SUPPLY CAUTION USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY LANG OR THEIR AUTHORIZED DISTRIBU...

Страница 5: ...n 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 con...

Страница 6: ...touch system of the Purple coupled with the advanced baking capabilities of the new Platinum ECCO PT Icon driven touch panel allows for easy operation also includes a manual override system Day Part M...

Страница 7: ...y 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 bushi...

Страница 8: ...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 Temperature for 350 F Mod...

Страница 9: ...witch will automatically return to the off position Pulse fan switch Pulse fan setting will only turn the fan on when the oven is calling for heat Dual speed switch Toggles the fan between high and lo...

Страница 10: ...tch will automatically return to the off position Pulse fan switch Pulse fan setting will only turn the fan on when the oven is calling for heat Dual speed switch Toggles the fan between high and low...

Страница 11: ...speed switch Toggles the fan between high and low speed Cook N Hold switch Oven will automatically drop to 140 F when oven timer stops timing down LED Display Adjustment Arrows Adjusts the LED display...

Страница 12: ...tell the oven which shelf the product is on Power Switch LED Display Read Clear Button Used as a programming key Temperature Button Press at any time to display oven temperature Manual Program Button...

Страница 13: ...ric Display Shelf Select Button Press to select shelf which product will be placed Product Select Button Press to select desired product Manual Program Button Use when product being cooked is for one...

Страница 14: ...Allows you to scroll down Function keys Keys are active when a program option is displayed on display Cancel button When scrolling through menu s this will allow you to back up to the previous menu I...

Страница 15: ...ert 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 tempe...

Страница 16: ...ng 000 will erase the existing program CC0 7 Select the desired cooking curve from 0 7 Fano12 Enter a desired Fan setting 0 nofan Will make the fan pulse with the heat 1 fanonhi Will make the fan run...

Страница 17: ...grammed temperature rEAdY A product has been selected and the oven has preheated to the programmed temperature The oven is ready to load a product COOL The oven s internal temperature is below what is...

Страница 18: ...ng 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...

Страница 19: ...next display ENTER COOKING TIME HR MIN SEC NOX T1 XXXF CO Enter the cooking time and then press E to advance to the next screen ENTER COOKING CURVE 0 TO 100 NOX T1 XXXF CXX XX XX XX PXXX F XX Enter t...

Страница 20: ...ATE TEMP STATUS Step 3 Select PROGRAM COMPUTER 12 00 01 01 01 325 PROGRAM ACTION DISPLAY Step 4 Using the and arrows enter access code A B C D E F Press or to scroll through letters and numbers then s...

Страница 21: ...DUCT EDIT PRODUCT DELETE PRODUCT EDIT PRODUCT ACTION DISPLAY Step 7 SELECT PRODUCT ICON is the first screen when creating a product program Press until you find an icon that best resembles your produc...

Страница 22: ...xt space and select a new number The screen will automatically advance after you enter the last number EXAMPLE 320 Press three times for a 3 then select ENTER to advance the cursor Press two times for...

Страница 23: ...ENTER to advance the cursor Since 0 is the next number select ENTER to advance to the next screen ACCEPT ENTER ACTION DISPLAY SELECT FAN SPEED HIGH LOW USE KEYS TO SELECT APPLE TIER 1 TEMP 320F TIME 0...

Страница 24: ...e cursor one space then press eight times for a 8 Select ENTER to advance the cursor Since 0 is the next number select ENTER to advance to the next screen ACCEPT ENTER ACTION DISPLAY CORRECT YES NO US...

Страница 25: ...ogram second tier ACCEPT ENTER ACTION DISPLAY Step 16 After programming the last tier select NO when asked CONTINUE TO NEXT TIER the computer will automatically advance the screen to program more prod...

Страница 26: ...e 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 qualit...

Страница 27: ...26 GENERAL CONT D ONE PAN TWO PAN THREE PAN FOUR PAN FIVE PAN https appliancetechmanuals com...

Страница 28: ...minutes Oven begins heating Open oven doors and insert product set timer up to 60 minutes Timer begins counting down Timer beeps continuously when done Product should now be done ECCO SII ACTION RESUL...

Страница 29: ...lashing shelf button s ECCO PP 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 PREHEATIN...

Страница 30: ...s Preheating to XXXF Beeper sounds briefly Display says Ready Select Product to start Display shows possible product selection for that temperature Select Product to start Display says Select shelf Pr...

Страница 31: ...f Heat contactor Heat contactor closes 208 240 volts to elements Oven heats SEQUENCE OF OPERATION ECCO AP Power switch turned on 240 208 VAC across Common terminals on power switch and B terminal of 1...

Страница 32: ...d 24 VAC across C and D common of 24 pin Terminal block 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 through door switch M...

Страница 33: ...volt transformer energized Back up toggle switch Off 24 VAC across D and TP4 TP5 and TP6 12 volts to TP1 on microprocessor 24 VAC across coil of motor contactor Motor contactor closes 240 208 VAC acr...

Страница 34: ...selected 24 VAC across motor output JP12 and D 24 VAC across motor HI relay coil Motor relay closes 208 240 VAC to motor Motor Starts 24 VAC across heat output JP11 and D 24 VAC across heat contactor...

Страница 35: ...al operation See Technical Data for correct ratings NO HEAT PROBABLE CAUSE CORRECTIVE ACTION Defective Elements Check that elements are getting power Confirm that Elements are working correctly See Te...

Страница 36: ...irm that Elements are working correctly See Technical Data for correct ratings Defective Transformer Check transformer for normal operation See Technical Data for correct ratings Replace if necessary...

Страница 37: ...s coming in from transformer Replace circuit board If voltage is present Check motor relay for normal operation 24 VAC 35 Check door switch for normal Check motor for normal operation See Technical Da...

Страница 38: ...12 position switch for normal operation See Technical Data for correct ratings If light is detected Check for 24VAC across heat output and D on 12 Pole terminal If voltage is not present Replace Circ...

Страница 39: ...mary coil for 208 240 VAC and 630 Check secondary coil for no less than 10 5 VAC and 1 If voltage is not measured on primary Check wires for any shorts Check Power switch for normal operation If volta...

Страница 40: ...f 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 Motor contactor not energized If 24 VAC is not me...

Страница 41: ...If 240 VAC is not measured Check back up switch SPDT for normal operation Replace if defective Defective thermostat Turn unit off and check for continuity while cycling thermostat on and off Replace i...

Страница 42: ...apidly 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 keep...

Страница 43: ...r normal operation Defective Control Transformer Confirm that 208 240VAC is feeding primary coil Confirm that 24VAC and 12VAC is at JP40 24VAC across solid yellow wires and 12VAC from one solid yellow...

Страница 44: ...e motor relay Check for 24VAC at relay coil If no voltage is present Confirm that points are making If voltage is present Replace relay Defective motor Check for 208 240VAC across P1 and T7 T4 If no v...

Страница 45: ...is feeding primary coil Confirm that 24VAC is at secondary coil Defective Thermostat Confirm that thermostat has 24VAC If no voltage is present Check component transformer and wiring for normal opera...

Страница 46: ...voltage is present Board is operating correctly If voltage is present Replace CPU ANOMALIES PROBABLE CAUSE CORRECTIVE ACTION Display will intermittently blank out Check ribbon cable for good connecti...

Страница 47: ...Volts CONTACTOR RESISTANCE CONTACTOR Coil 3 Pole 24 Volt coil 6 2 Pole 24 Volt coil P B PP PT motor 35 RELAY RESISTANCE RELAY Coil 240 VAC 7 2 K OVER TEMP THERMOSTAT OVER TEMP Wires Normally closed DO...

Страница 48: ...PHASE SINGLE PHASE 208 VOLT 240 VOLT 480 VOLT 208 V 240V MODEL NUMBER TOTAL K W CONNECTION L1 L2 L3 L1 L2 L3 L1 L2 L3 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...

Страница 49: ...709 1 42 400 1072 2 14 190 724 1 45 410 1090 2 18 200 739 1 48 420 1109 2 22 210 754 1 51 430 1127 2 25 220 769 1 54 440 1146 2 29 230 785 1 57 450 1165 2 33 240 800 1 60 460 1184 2 37 250 816 1 63 47...

Страница 50: ...e arrangement of the Strapping Bars located at the bottom of the circuit board just above the ribbon connection Each model has its own strapping configuration which must be set by the service technici...

Страница 51: ...50 TECHNICAL DATA CONT D ECCO C TEST POINT LAYOUT TP 2 TP 1 TP 3 TP 4 TP5 TP6 TP7 https appliancetechmanuals com...

Страница 52: ...ELLOW YELLOW YELLOW YELLOW GREEN GREEN GREEN GREEN GREEN POWER ORANGE MOTOR HIGH RED MOTOR LOW BLUE STEAM GREEN ECCO GCCO LIGHTS GREEN YELLOW YELLOW RED YELLOW BROWN BROWN PURPLE PLUS POWER SWITCH ECC...

Страница 53: ...52 WIRING DIAGRAM ECCO T 208 240 https appliancetechmanuals com...

Страница 54: ...53 WIRING DIAGRAM ECCO T 480 https appliancetechmanuals com...

Страница 55: ...54 WIRING DIAGRAM ECCO AP 208 240 https appliancetechmanuals com...

Страница 56: ...55 WIRING DIAGRAM ECCO AP 480 https appliancetechmanuals com...

Страница 57: ...56 WIRING DIAGRAM ECCO SII 208 240 https appliancetechmanuals com...

Страница 58: ...57 WIRING DIAGRAM ECCO SII 480 https appliancetechmanuals com...

Страница 59: ...58 WIRING DIAGRAM ECCO C 208 240 https appliancetechmanuals com...

Страница 60: ...59 WIRING DIAGRAM ECCO C 480 https appliancetechmanuals com...

Страница 61: ...60 WIRING DIAGRAM ECCO PP 208 240 https appliancetechmanuals com...

Страница 62: ...61 WIRING DIAGRAM ECCO PP 480 https appliancetechmanuals com...

Страница 63: ...62 WIRING DIAGRAM ECCO PT 208 240 https appliancetechmanuals com...

Страница 64: ...63 WIRING DIAGRAM ECCO PT 480 https appliancetechmanuals com...

Страница 65: ...35 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 120 208 240 24 VAC 31400 07 Transformer 480 24 VAC 31400 15 Transform...

Страница 66: ...900 10 Fuse Holder 15 Amp 30901 08 Transformer 120 208 240 24 VAC 31400 07 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...

Страница 67: ...0901 08 Transformer 120 208 240 24 VAC 31400 07 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 31...

Страница 68: ...e 31800 01 Circuit Breaker 480 Volt 3 Pole 31800 04 Circuit Board Assembly Buzzer 40102 10 Circuit Board Front Panel 40102 20 Circuit Board Front Panel Mrs Fields 40102 21 Circuit Board Microprocessor...

Страница 69: ...nits 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 70701 19 Knob Damper Black not used before D 57...

Страница 70: ...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 Pole 31800 04 C...

Страница 71: ...descent 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 Pole 31800 04 Circuit Board D...

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