TABLE OF CONTENTS
Contents
1. REVISION BLOCK REV ECN NO DESCRIPTION DR MFG ENG DATE B ADDED NEW TERMINAL BLOCK SRC 1 25 98 CEN FREI TS lt POWER SWITCH 22 X p TO POWER SWITCH S COMPUTER p da A x VOLTS KW AMPS m 2 es G 1 12 Le L3 L3 L1 L1 L2 L3 A b 1 DECK 480 60 27 27 us 158 158 100 Y E E 12 240 240 1 DECK 1 2 3 C oe 2 DECK 480 87 8 7 5 4 230 258 316 258 satum ee 22 1 SECOND DECK I nae a WIRING IDENTICAL a BACKUP RELAY FIRST Am NBRMAL c PIG 24 GROUND LUG NO NC SWITCH 5 D BACKUP L 2 SWITCH MOTOR Ut r O D O E 24 VAC FUSES Spe poc BUZZER BACKUP ONO e mi 4 ono pae NO STEAM BACKUP _ P SWITCH D FROM MAIN OVEN LIGHTS 240 VAC CONTACTOR STEAM STEAM 5 INTERFACE NE2. INSTALL TRANSFORMER RELAY DLG 06 05 01 Q POWER SWITCH SWITCH O 220 380 3PH 4 WIRE 60 Hz COMPUTER 240 O VOLTS KW AMPS e a o TH COMPUTER E n C 1 DECK 37 31 31 144 168 10 2 DECK 6 8 6 8 62 30 9 3 240 IGHT BACKUP RELAY 3 ins m SWITCH 240 415V 3 PH 4 W 50 or 60 Hz NORMAL E REI OMNE 0 VOLTS KW AMPS D BACKUP 19 L3 N TOTAL L2 L3 N SWITCH 1 DECK 4 3 37 37 11 0 153 153 178 JP 2 DECK 8 8 74 22 0 331 306 334 2 sd STEAM OFF BACKUP 5 n CY XO STEAM BACKUP O E E SWITCH X prr STEMM J STEAM O VEN LIGHTS INTERFACE 240 FAN Ht 24 SERVICE CONNECTIONS D THREE PHASE UHR HEAT LIO L1 Le L3 NEUTRA 1 DECK 2 3 N GROUND LUG FAN LB 2 DECK 1 6 2 4 3 5 N N FROM MAIN 24VAC IC PTILINAL SECOND DECK xn 4 STEAM WIRING IDENTICAL CONTR L FIRST DECK 7 S 2 e 5 g 6 BEAT y SECOND DECK CIRCUIT BREAKERS 0 VOLTAGE SELECTION SWITCH UP F R 240V DOWN FOR 208VAC L 2 STEAM D O FROY C C O4 CONTROL 8 O0 O O Q H SOL
3. 29 After Serial X 35118 REVISION BLOCK xe E Q e STM REV ECN NO DESCRIPTION DR MFG ENG DATE CONTR SM me B REMOVED SNUBBER SRC 3 5 98 a ym SHIVER O O G CHANGED TO 1 SPEED MOTOR DLG 04 06 01 SWITCH X TO POWER SWITCH x 2 x COMPUTER TE GENE GIES bw i d US SERVICE CONNECT
4. NB TU 1 1 D 2 m e O q u 4 1 3 BEL ALT MOTOR HOOK UP 4 L 4 BLACK QTY ITEM PART NUMBER DESCRIPTION MATERIAL FIRST DECK CIRCUIT BREAKERS E rn 4 LANG MANUFACTURING DR SRC DATE 7 13 95 TITLE 55 53 5e 54 HI LIMIT TOP DISC STAT CK DATE FN 9 57 Q Q TOLERANCES FRACTIONS DECIMALS D E CONTAC IR 1 64 X 05 HEATING ELEMENTS ANGLES E DS TERMINALS 5 XXX 015 REAR VIEW UNLESS OTHERWISE SPECIFIED NEXT HIGHER 55 SHEET DRAWING NUMBER REV DIMENSIONS ARE IN INCHES SCALE SCALE SH1QF SH2 NUMBER RE 28 DIAGRAM ECCO L Prior to Serial V 35118
5. RELAY RESISTANCE RELAY Coil gt 240 VAC 72 KQ OVER TEMP THERMOSTAT OVER TEMP Wires Normally closed DOOR SWITCH gt Check switch between common and NO normally open contacts insure switch closes approximately 3 to 4 inches before door closes BLOWER FAN gt Blower fan will rotate clockwise and should have a 5 8 gap between it and the back wall of the can 2 3 CHNICAL DATA CON AUTO BYPASS SWITCH The Auto Bypass and Energy switch are located below the controls behind a pull down access panel e Auto Bypass switch Normally in OFE The position will interrupt power to the computer and allow use of the back up thermostat e Energy switch Normally in HIGH for 11 kW heats LOW WILL PROVIDE 8 25 kW heat Not provided on Steam convection ovens LINE AMPERAGE WATTAGE AND PROPER PHASING NORMAL AMPS PER LINE MODEL TOTAL K W THREE PHASE PHASE NUMBER CONNECTION 480 VOLT 37 0 56 0 48 6 2ECCO 2333 600 742 60 0 55 3 55 3 26 0 33 0 26 0 SERVICE CONNECTIONS FRONT WIRE CONNECTIONS PHASE LINE 1 1 OVEN 1 3 2 OVEN 1 3 5 7 REAR CONNECTION WIRE NUMBERS ITOVEN 58 6 7 57 68 2 OVEN 7 58 6 5 57 24 CHNICAL DATA CONT PROBE RESISTANCE RESISTANCE VOLT DROP TEMP RESISTANCE VOLT DROP 70 556 Q 1 11 290 8810 1 76 809 569 Q 1 14 3009 9970 1 79 90 583 Q 1 17 310 9140 1 83 100 596 Q 1 19 320
6. Service Manual for the Lang Models ECCO LMDR CINNABON 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 CAUTION ANY STAND COUNTER OR OTHER DEVICE ON WHICH OVEN WILL BE LOCATED MUST BE DESIGNED TO SUPPORT THE WEIGHT OF THE OVEN CAUTION 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 IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND OR DAMAGE TO EQUIPMENT UNIT MUST BE INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CODES 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 NOTICE 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 NOT
7. 24 VAC across D and each terminal of back up thermostat 24 V AC across coil of Heat contactor Heat contactor closes 208 240 volts to elements ITENANCE amp CLEANII CLEANING Always start with a cold oven The stainless interiors can easily be cleaned using most domestic or commercial oven cleaners Always follow the cleaner manufacturer s instructions when using any cleaner Care should be taken to prevent caustic cleaning compounds from coming in contact with the blower wheel The oven racks and rack slides may be cleaned by removing them from the oven and soaking them in a solution of ammonia and water The stainless steel door liners and oven front should normally be cleaned with a soap and water solution Discoloration or heat tint may be removed with any of the following cleaners Penny Brite Copper Brite Du Bois Temp or Past Nu Steel Always apply these cleaners when the oven is cold and rub in the direction of the metal s grain JBLE SHOOTING ECCO L 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 position Turn main power switch to position NV ON WV Check oven for normal operation NO DISPLAY PROBABLE CAUSE CORRECTIVE ACTION Power switch is not turned on Turn power switch on Defective po
8. OPTIONAL 26 Prior to Serial X 35736 C SIM COMPUTER STEAM INTERFACE FAN HI HEAT FAN LO 24VAC 2750W 208V 55 REVISION BLOCK NITRO REV ECN NO DESCRIPTION DR DATE P POWER SWITCH bue ae TU POWER SWITCH u VOLTS KW AMPS Le L3 11 TOTAL Le 1 PHASE P m y O 1 DECK 208 616 2 79 2 75 1 66 evi 28 9 56 TO COMPUTER X bd Bw v s 1 DECK 240 433 367 367 166 289 26 5 486 d 2 DECK 208 8 91 8 91 S 23
9. TP2 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 TP3 If voltage is present at and display is still not on press and hold the R C button on board if LED s come on replace Interface board If LED segment does not illuminate or the LED 15 blank replace LED At this point you should have a display 17 FAN Manual Mode LESHOOTING ECCO LMDR PROBABLE CAUSE CORRECTIVE ACTION Defective 240 24 VAC transformer Back up relay not energizing Motor contactor not energized gt Check for 24 VAC on D of the terminal block If 24 VAC is not measured Turn off and gt Check secondary coil for 1 Q gt Check primary coil for 77 Q gt Replace transformer If 24 VAC is measured Turn off and gt Check back up relay for normal operation gt Check for 240 VAC on relay coil If 240 VAC is measured Turn unit off and gt Check back up relay coil for 7 2 gt Replace if defective If 240 VAC is not measured gt Check back up switch SPDT for normal operation gt Replace if defective gt Check for 24 VAC at contactor or relay coil If 24 VAC is not measured Turn oven off and gt Check door switch for normal operation Check door switch for continuity Replace or adjust door switch If 24 VAC is measured Turn unit off and
10. exceeds the programmed temperature set point Pace Timers The pace timers can be set at any time Press and hold the PACE button for three seconds The display will read out the set time then begin to flash Press the 1 minute button to increase the time or the 2 minute button to decrease the time Once the corrected time 1s set press and hold the PACE button for three seconds to exit the programming mode Program Enable Buttons The control can not be put into the programming mode if any of the timers are running The two blue dots above the CINNABON logo the program enable buttons Press the left dot then the right dot within 3 seconds to put the control into a programming mode Once the shelf position buttons are set press the left dot then the right dot within 3 seconds to exit the programming mode There will be no beeper sound when the buttons are pressed Shelf Position Buttons Put the control into the programming mode Press the shelf button to be adjusted once for product twice for P product or three times for E product The display will read out 00 00 then begin to flash Press the one minute timer button to increase the time or the two minute timer button to decrease the time Once the correct time is set move on to another shelf position button or exits the programming mode 13 QUENCE OF OPERATI Power switch turned on gt 240 208 VAC across Common
11. 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 10 IPERATION CONTI CONTROL PANEL The control panel consists of the following items Detailed operational descriptions are given later in this section POWER SWITCH Turns the oven on and off LIGHT SWITCH Turns the oven lights on The switch is spring loaded so the lights will automatically turn off when the switch 1s released STATUS DISPLAY Displays the oven status Ready done etc and is the count down timer SHELF BUTTONS Numbered 1 to 6 these buttons represent different shelf positions Button Shelf Position 1 Top Left 2 Right 3 Middle left 4 Middle Right 5 Bottom Left 6 Bottom Right PACE TIMERS Labeled C P and E these buttons are adjustable from one to thirty minutes MINUTE TIMERS There are two minute timers 1 1 programmed for one minute 2 is programmed for two minutes TEMP BUTTON When pressed this button will display the temperature of the oven PROGRAMMING ENABLE BUTTONS These are hidden buttons that allow the times of the shelf position buttons to be set STATUS DISPLAY The Status Display Display informs the operator of the oven s status The Display informs the operator when the oven 15 ready to bake or if the oven is above or below the programmed temperature Below is a list of displays and their definitions
12. terminals on power switch and terminal of 24 pin Terminal block 240 208 V AC across terminal of 24 pin Terminal block 240 208 V AC to Common terminals of Motor relay 240 208 V AC across common terminals of Back up toggle switch 120 VAC to coil of Back up relay 40 24 volt transformer energized 24 V AC across and D common of 24 pin Terminal block 24 V AC across D and coil of Motor relay Through door switch 24 V AC across D of Heat contactor Through door switch and high limit thermostat 24 V AC across D and Common terminals of Back up relay 240 12 volt transformer energized U v vv v VR VV ack up toggle switch Off 24 V AC across D and TP4 TP5 and TP6 12 volts to TP1 on microprocessor 24 V AC across coil of motor contactor Motor contactor closes 240 208 V AC across NO Normally open contacts of Motor relay otor starts 24 V AC across coil of Heat contactor Heat contactor closes 208 240 volts to elements Oven heats VVV VS VV NN V Back up toggle switch Off gt 208 240 VAC across coil of Back up relay Back up relay closes gt 24 VAC across and Back up Thermostat With door switch energized 24 VAC across coil of Motor relay Motor contactor closes 240 208 VAC across NO Normally open contacts of Motor relay gt gt gt Motor starts gt Temperature set on back up thermostat gt gt gt gt
13. 33 74 2 60 112 12 c DECK 240 8 8 FC 23 38 eu SS 97 8 J LIGHT BACKUP RELAY SWITCH E SERVICE CONNECTIONS Q NORMAL NU NC O E 5 THREE PHASE SINGLE PHASE BACKUP 113 O is L1 Le L3 E Le r SWITCH 1 DECK 1 4 3 153 2 4 GROUND LUG i DECKI 1 4 7 2 5 8 36 2468 cf STEAM OFF BACKUP E b n NO STEAM BACKUP SECOND DECK 5 WIRING IDENTICAL Buzzer 2 is 7 FIRST DECK s 1 95 OFF STEAM LY gt 2 6 OVEN LIGHTS lt a A e d 7 240 4 2 8 SECOND DECK D CIRCUIT BREAKERS M MAT L R PTIDNAI TSTAT STEAM STEAM STE D CONTRO Q OOO OOO 0 0 0 H HEAT 24 POLE TERMINAL BLOCK H 2 STEAM FROM CONTROL SOLENOID STEAM VALVE WHEN PRESENT LO V SUPRESSOR 3667W 240V H HI V SUPRESSUR fil car FUSE O E ene 1 MOTOR HEAT Q FUSE FROM CONTROL H 600V SNUBBER B aas 100 SNUBBER 56 54 an DOOR SWITCH dx CERAMIC CAPACITOR C NC BLACK I NO PI NC 2 1 I 1 o P 3 L 3 ALT MOTOR HOOK UP 4 m 4 BLACK QTY ITEM PART NUMBER DESCRIPTION MATERIAL FIRST DECK MM LANG MANUFACTURING D T V J DR SRC DATE 7 13 95 TITLE zz ur dns W D ECCO C STM 1 SPD m FD DATE 7 15 98 Q e S TOLERANCES 5 FRACTIONS DECIMALS yo acus 208 240VAC HEATING ELEMEN
14. 9310 1 86 110 610 Q 1 27 330 948 1 90 120 623 Q 1 25 340 965 1 93 130 6370 1 27 350 983 1 97 140 651 Q 1 3 360 1000 9 2 00 150 665 Q 1 33 370 1018 Q 2 04 160 678 Q 1 36 380 1036 Q 2 07 170 694 Q 1 39 390 1054 Q 2 11 180 709 Q 1 42 400 1072 Q 2 14 1909 724 1 45 410 1090 Q 2 18 200 739 1 48 420 1109 Q 2 22 210 754 1 51 430 1127 Q 2 25 220 769 1 54 440 1146 Q 2 29 230 785 Q 1 57 450 1165 Q 2 22 240 800 Q 1 60 460 1184 Q 2527 250 816 1 63 470 1204 2 41 260 9320 1 66 480 1223 Q 2 45 270 848 1 70 490 1243 Q 2 40 280 864 Q 1 73 500 1263 Q 2 23 Probe is factory checked at 350 F Must be completely disconnected from circuit board when measuring probe resistance Display will read HELP if probe is open or unplugged Any probe resistance can be multiplied by 2 milli amps 002 to determine voltage drop 25 CHNICAL DATA CONT ECCO LMDR TEST POINT LAYOUT TO TERMIHAL FROM POWER BLOCK POWER SWITCH E TOBOTTOH OF COHTROL PAHEL RESET CIRCUIT CONTROL PANEL 50 CONNECTOR 20 PIN CONNECTOR MICROPROCESSOR CIRCUIT BOARD PIN CONNECTOR TEST POINT FOR HM TO TEMPERATURE E SENSOR 7 5 RESET STRAPPING BAR CIRCUIT 2 TO POWER CONNECTOR SWITCH TOs PIN HIBBOH CONHECTOR 2 24 VOLTS AC INPUT 3 BLANK 4 HEAT OUTPUT 5 MOTOR OUTPUT 6 STEAM OUTPUT
15. A FAN HT 2 O ZS ae E HEAT IC SECOND DECK RTD CIRCUIT BREAKERS FAN LO OP TIONA 1 245 TSTAT STEAM E STEAM 2 og 24VAC CONTROL Oe 3 26 C F O 5 b3 3 HEAT MOTOR LU Le 2 STEAM FRUM CONTROL uc va NUT IN STEAM UNITS O O SOLENOID e SOLENOID s S 1000v SNUBBER WHEN PRESENTO 480 3 ENERGY 2 22 de L SNUBBER 100VAC 2750 480 9 SNUBBER 600VAC 480 3 PLACES 480 sen lA VOLTAGE SUPRESSOR BRN T3 f DOOR SWITCH 5 ES TM 2 5 XUI MOTOR FROM ue V LAGE SUPRESS N 5 CONTROL C NC C O NU JN el 2 C Q 1 pe Ul T lt A E 51 55 57 Sd 5e 56 54 50 TY 2 AN dip zd e 4 JN 23 CER T R CONTACTOR e4vac S a O OO OOOQOC BLUE lol lo RED z RED T9 2 2 w 21 Tu d QTY ITEM PART NUMBER DESCRIPTION MATERIAL 3 3 NG MANUFACTURING FIRST DECK 4 d ES 58 CIRCUIT BREAKERS HI LIMIT OO DIst sTAT DR SRC DATE 12 14 94 TITLE W D FCCO C STEAM 2 B x CK FJD DATE 12 14 94 B j TOLERANCES pe FROM MAT FRACTIONS DECIMALS BOVAC REAR VIEW CONTACTOR 1 64 X 05 ANGLES XX t 08 5 XXX 015 UNLESS OTHERWISE SPECIFIED NEXT HIGHER ASSY SHEET DRAWING NUMBER REV DIMENSIONS IN INCHES SCALE TO FIT Jor d 61111 114
16. CLOCKWISE ANG MANUFACTURING FIRST DECK CIRCUIT BREAKERS 5 d HI LIMIT DR SRC DATE 12 14 94 TITLE n E DISC STAT W D ECCO C 5 1 SPEED O Q OQ CK FJD DATE 12 12 95 51 57 56 50 TOLERANCES FRACTIONS DECIMALS TERMINALS FROM MAIN 1 64 X 05 480VAC REAR VIEW CONTACTOR D UNLESS OTHERWISE SPECIFIED NEXT HIGHER ASSY SHEET DRAWING NUMBER REV DIMENSIONS ARE IN INCHES SCALE TO FIT dor 61111 129 30 C C _ STIM REVISION BLOCK REV ECN NO DESCRIPTION DR MFG ENG DATE
17. Check contactor coil for continuity Replace if defective 18 LESHOOTING ECCO LMDR PROBABLE CAUSE CORRECTIVE ACTION No voltage across contactor gt Check 208 240 VAC across terminals of contactor points If 208 240 VAC is not measured gt Check connection to main contactor heat contactor gt Check circuit breaker If 208 240 VAC is measured gt Check across NO contacts Should have 208 240 VAC gt Replace if defective Note Motor should now be operating NO MOTOR COMPUTER MODE PROBABLE CAUSE CORRECTIVE ACTION No 24 VAC on Interface board gt Check for 24 VAC at TP4 to common D If 24 VAC is not measured gt Check for 24 VAC at NC contacts on back up relay If 24 VAC is measured gt Check for 24 VAC at TPS gt Replace Interface board if defective 19 JLESHOOTING ECCO LMDR CO NO HEAT Manual Mode NOTE Fan must be operating before trouble shooting No heat PROBABLE CAUSE CORRECTIVE ACTION Back up relay not energizing gt Check for 240 VAC on relay coil If 240 VAC is measured Turn unit off and gt Check back up relay coil for 7 2 Q gt Check contacts for 24 VAC Replace if defective If 240 VAC is not measured gt Check back up switch SPDT for normal operation Replace if defective Defective thermostat gt Turn unit off and check for continuity while cycling thermostat on and off Replace
18. ENOID 1 I Ta STEAM VALVE BT DILE wi VHEN PRESENT TERMINAL BLICK 2750 208V 3667W 240V pe Lg FUSE LO V SUPRESSOR P Y 1T H FRDM CONTROL HI V SUPRESSOR O O COR ACTUR 24 H 600V SNUBBER MOTOR 53 57 53 56 54 50 AN DOOR SWITCH D 100V SNUBBER NC BLACK B Pl NC C NO I mr CERAMIC CAPACITOR D e I e O 9 RR RED ALT MOTOR HOOK UP FIRST DECK BLACK CIRCUIT BREAKERS m QTY ITEM PART NUMBER DESCRIPTION MATERIAL NG MANUFACTURING 1 j DR SRC DATE 7 13 95 TITLE 55 54 HI LIMIT TOP DISC STAT Ck DATE TOLERANCES ERU E 56 50 n FRACTIONS DECIMALS 240 415 BO Sw On 60Hz 1 64 HEATING ELEMENTS CNET Elks pps NL 220 380VY 3PH 4 IRE 50 or 60Hz TERMINALS 5 XXX 1015 REAR VIEW UNLESS OTHERWISE SPECIFIED NEXT HIGHER ASSY SHEET DRAWING NUMBER REV DIMENSIONS ARE IN INCHES SCALE SCALE SHIOFSH2 UMBER RE 31 ECCO LMDR ELECTRIC COMPUTERIZED CONVECTION OVEN iesus Element ECCO Oven 208 240 Volt 11000 Watts Element ECCO Oven 480 Volt 11000 Watts Motor 1 3 HP 480 Volt Motor 1 3 HP 115 208 240 Volt Switch Micro Convection Oven Door Switch Toggle On Off owitch Toggle Lights Thermostat Safety 490 F Open Thermostat 450 F Oven Terminal Block 24 Position Quick Disconnect Relay 240 VAC Contact
19. ICE 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 CAUTION ALWAYS KEEP THE AREA NEAR THE APPLIANCE FREE FROM COMBUSTIBLE MATERIALS CAUTION KEEP FLOOR IN FRONT OF EQUIPMENT CLEAN AND DRY IF SPILLS OCCUR CLEAN IMMEDIATELY TO AVOID THE DANGER OF SLIPS OR FALLS IMPORTANT HEAD FIRST IMPORTANT KEEP WATER AND SOLUTIONS OUT OF CONTROLS NEVER SPRAY OR HOSE CONTROL CONSOLE ELECTRICAL CONNECTIONS ETC CAUTION 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 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 the service station nearest you BOTH HIGH AND LOW VOLTAGES ARE PRESENT INSIDE THIS APPLIANCE WHEN THE UNIT IS ANGER HIGH VOLTAGE Electrical Hassard PLUGGED WIRED INTO ALIVE 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 AUTHOR
20. IONS do 5 62 ne Sat TETAL let Le 1 480 60 eu eb 1t 15 8 15 8 10 0 QT L1 Le ES 12 d 240 240 1 1 e 3 2 DECK 480 8 7 87 5 4 23 0 25 8 31 6 25 8 gt DECK 1 6 2 4 3 5 1 SECUND DECK e a CY YY WIRING IDENTICAL as BACKUP RELAY FIRST DECK a NORMAL TERES 24 GR UND LUG BACKUP O SAL MOTOR HI E O eui v 9 O FUSES 24 VAC lh 22 1 BUE BACKUP L 5 A BEP Cs d e LIGHT OD 2 RELAY 7 STEAM BACKUP A d gt 0 SWITCH Qa dS TP g 2 cf LIGHTS 240 VAC CONTACTUR n STEAM STEAM PA 6 C INTERFACE FAN gt 2 A aan HEAT O FAN LO OPTIONAL TSTAT STEAM CZ STEAM Lo oo e4vac IC CONTROL SECOND DECK C CIRCUIT BREAKERS 2 1 4 HEAT 2 E 25 5 6 e 5 STEAM L3 FROM 3 CONTROL 4 A Q SOLENOID ire e SOLENOID S 1000V SNUBBER WHEN PRESENT 480 42 1 Al L SNUBBER 100VAC ima 2750W 480V H SNUBBER 600VAC VOLTAGE SUPRESSDKR I DOOR SWITCH l HEAT ES MOTOR FROM VOLTAGE SUPRESSOR E C NC 5 FUSE CENTRI 5 2 TENER MOTOR O amp 55 57 53 52 56 54 50 f o XE ds CERAMIC CAPACITOR CONTACTOR 24vac RED til Le 13 BLACK E 1 i Li M T 95 2 QTY ITEM PART NUMBER DESCRIPTION MATERIAL 3 ae 1 mi FAN ROTATION
21. IZED DISTRIBUTORS CAN CAUSE BODILY INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL WARRANTIES JIPMENT DESCRIPTI LANG MopEL ECCO LMDR ELECTRIC FULL SIZE CONVENTION OVEN EXTERIOR gt The oven exterior dimensions 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 gt The oven doors come standard with a double pane window The door handle is constructed of Stainless Steel and Phonolic Tubing gt The oven cavity is insulated with high temperature insulation for efficiency and reduced heat loss INTERIOR gt The oven cavity dimensions 29 72 5 cm Wide 20 50 84 cm High 21 53 38 cm Deep gt The oven is designed for three shelves and comes with three Chrome Plated Racks gt The interior of the oven is constructed of porcelainized stainless steel OPERATION gt The ECCO oven is a forced air convection oven with a vented oven cavity gt The air is driven by a 1 3 HP fan motor CONTROLS e ECCO LMDR gt Complete Computerized Controls with a Manual Override system gt Independent Shelf Timers for each Shelf gt Load Control through use of Cooking Curves gt Shelf Compensation Timing for uniform baking gt Single speed fan ECCO LMDR Convection Oven Start Up 1 Verify connections at plug and terminal block 2 Incoming Volt Singl
22. Pr eheat Stands for PREHEAT product has been selected and the oven is heating to the set 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 programmed Hot The oven s internal temperature is above what is programmed Hel p There is a fault in the control system the computer will not operate until service is performed JPERATION CONTE Control Panel Buttons Shelf Buttons Place the product into the oven on one of the six shelf positions Close the oven doors Press the shelf position button that corresponds to the shelf position once for product twice for product three times for product or four times for off A beeper will sound once the product is done and DONE will be displayed Press the flashing shelf position button to cancel the beeper Minute and Pace Timers The 1 button is preset to one minute the 2 button is preset to two minutes and the Pace buttons are adjustable from one to thirty minutes Press the button once to start the timer The display will read out the programmed time and then revert to the previous read out The timer will countdown internally Time remaining can be recalled by pressing the button again Canceling a Timer Any timer can be cancelled at any time Press and hold the timer to be c
23. TS ANGLES XX 05 io XXX 015 UNLESS OTHERWISE SPECIFIED NEXT HIGHER 455 SHEET DRAWING NUMBER REV DIMENSIONS ARE IN INCHES SCALE N A ort After Serial X 35736 amp IM REVISION BLOCK C N REV ECN NO DESCRIPTION DR MFG EN DATE ER g comm FRANSFORNER RELA D INSTALL TRASFORMER RELAY DLG 06 06 01 POWER SWITCH TO POWER SWITCH vane v AVES M gt Em Li Le Le L3 L3 L1 TOTAL 11 Le 1 PHASE COMPUTER 240 o O 1 DECK 208 6 6 2 75 2 75 1 66 37 37 22 9 56 D
24. ackwards 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 gt 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 gt 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 gt 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 gt 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 or on newer units switch toggle switch in rear of oven to 240 With 480 volt installations check to be sure that the motor rotates in a clockwise direction as viewed from the front of the oven gt the motor rotation in 480 volt units 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 fou
25. ancelled until CANCL appears in the display PRE HEAT The display will read PREHEAT once the power switch is turned on At this point the computer board signals to turn on the heat element on This is done at the interface board by the heat on signal which applies 24 volts from the interface board to the element relay coil through the brown wire number 4A The current path for the element relay then goes to the door switch through the blue wire number 11 With the door closed the heat on signal energizes the element relay and turns on the element The element will remain on until the computer turns off the heat on signal the door is opened or the power 15 turned off There 15 also a safety temperature thermostat in the circuit of the element relay If the oven should get too hot the thermostat will open causing the element relay to open and turn off the element The fan in this case would continue to run TEMPERATURE amp TIME CONTROL The time and temperature are controlled by the computer according to the product programs stored in the computer memory An RTD probe in the oven is used by the computer to determine the oven temperature The resistance of the probe will increase as the temperature increases The computer compares the probe reading with the programmed temperature and turns the heat on signal on when the oven temperature drops below the programmed temperature set point and off when the oven temperature
26. e Phase 11 12 Three Phase 11 12 L2 L3 3 Amp draw Ll L2 L3 4 Motor amp draw 5 Are programs correct Yes No 6 Verify actual temperature at 310 F Note Install thermocouple wire in center of oven cavity Let oven cycle off and on 3 times before recording temperature Model Date Store Contact Store Phone Address Serial Tech Name Company Service Company Phone L3 L1 STALLATIO Receiving the Oven gt 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 that 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 Manufacturing Company File your claim with the carrier Location gt 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 Un crating gt The oven will arrive completely assembled inside a wood frame covered by cardboard box and strapped to a skid Remove the cardboard cover cut the straps and r
27. emove the wood frame Remove oven from skid and place in intended location Installing the Legs gt Legs are available for both the single and double deck installations Single deck installations require a 27 inch leg Double deck installations require 6 inch legs or casters gt 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 ovens 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 gt 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 gt The adjustable feet on the bottom of each leg may be screwed in out as necessary to level the oven gt torpedo level placed on an oven rack will assist in leveling the oven STALLATION CONT I Stacking the Ovens Remove ll the plug buttons from the top of the lower oven gt 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 gt Tip the top oven b
28. for foreign objects keeping contactor closed 21 gt Check for stuck button by pressing any button If computer beeps or chirps Check control panel transformer 12 V AC for proper operation Check for at least 10 5 Check TP2 for at least 4 99 VDC Check TP3 for at least 4 97 VDC If computer does not beep or chirp gt Check each button for movement Check that panel label has not been damaged in any way Replace button if defective Replace panel label Display has shelf Read Programming Codes ANOMALIES PROBABLE CAUSE CORRECTIVE ACTION Oven temp is not the same as gt Check probe for correct resistance a IF PROBE RESISTANCE IS MORE THAN 10 Q REPLACE PROBE IF CORRECT RESISTANCE IS MEASURED gt Check across TP3 for 5 VDC Must be at least 4 98 IF 5 VDC IS MEASURED Replace CPU IF 5 VDC IS NOT MEASURED gt Dissconnect ribbon from CPU board and measure for 5 VDC at TP2 IF 5 VDC IS NOT MEASURED gt Replace CPU 22 ECHNICAL DAT ELEMENT RESISTANCE gt 208 Volt 16 gt 480 Volt 600 TRANSFORMER RESISTANCE TRANSFORMER Input Primary Secondary Output gt 208 24 Volt 208 240 Volt 770 10 24 Volt 240 12 Volt 208 240 Volt 630 Q 10 12 Volt gt 208 240 24 12 208 240 Volt 208V 240V 12V 24V 24 12 Volts 64 Q 75 60 10 CONTACTOR RESISTANCE CONTACTOR Coil gt 3 Pole 24 Volt coil 60 gt 2 Pole 24 Volt coil P amp B PP amp PT motor 35
29. if defective Defective contactor Check for 24 VAC at heater coil If 24 VAC is measured Turn oven off and gt Check for continuity through coil Replace if defective If 24 VAC is not measured Turn oven off and gt Check for continuity through hi temp wires going to over temp thermostat Replace over temp thermostat if defective Defective elements gt Check elements for continuity gt Replace if defective 20 LESHOOTING ECCO LMDR CC PROBABLE CAUSE CORRECTIVE ACTION Defective over temp thermostat gt Check for 24 VAC on 55 red wire to common D If 24 VAC is not measured Turn oven off and gt Check for continuity through over temp thermostat Replace if defective NO HEAT Computer Mode PROBABLE CAUSE CORRECTIVE ACTION No 24 VAC on Interface board gt Check for 24 VAC at TP4 to ground If 24 VAC is not measured gt Check for 24 VAC at contacts on back up relay If 24 VAC is measured gt Check for 24 VAC at TP6 gt 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
30. nd on the oven DATA PLATE gt This oven can be installed on both single and three phase supplies and is shipped from the factory for three phase gt phase the oven to match the power supply follow the charts on page 10 for proper wire size and grouping Clearances Standard minimum clearance from combustible construction is as follows 2 inches from sides 4 1nches from back 6 inches from floor IITIAL START U PRE POWER ON After the oven is installed and connected to power prior to turning on verify the following e The doors open and close freely e All five racks are in the oven correctly e All packing materials have been removed from the inside of the oven POWER ON gt When the oven is first turned on the display will read Preheat The oven will begin to heat up at this point When the oven reaches the correct temperature for the product selected the display will read Ready gt Once the oven has reached it s programmed temperature select the shelf position you would like to cook on press shelf button once for product twice for P product or three times for product ROL PANEL ECCO LI LIGHTS ON 5 DIGIT LED DISPLAY SHELF TIMER BUTTONS PACE TIMER BUTTONS MINUTE UP amp DOWN BUTTONS PROGRAM ENABLE BUTONS OPERATION GENERAL gt Convection ovens constantly circulate air over and around the product This strips away the thin layer of mois
31. or 2 Spd Contactor 3 Pole 24 VAC Contactor 2 Pole 30 Amp 24 VAC After Serial V 90436 Fuse 15 AMP 300 Volt Fuse Holder 15 Amp Cable Ribbon Assembly Transformer 480 240 VAC Transformer 208 240 24 12 VAC Lamp Socket Lamp Incandescent 250 Volt Clear Oven Lamp Lens Watch Glass Oven Lamp Lens Gasket Circuit Breaker 208 240 Volt 1 Pole Circuit Breaker 480 Volt 3 Pole Circuit Board Assembly Buzzer Circuit Board Front Panel Circuit Board Microprocessor Probe Temperature Sensor Door Handle Bracket Chrome Single Handle Ovens Door Handle Screw Single Handle Ovens Door Handle Washer Single Handle Ovens Turnbuckle Assembly Single Handle Ovens Door Left Hand Single Handle Ovens Door Right Hand Single Handle Ovens Handle Assembly Single Handle Oven Knob Thermostat 450 F Oven not used before D 57000 Knob Damper Black not used before D 57000 Window Assembly Oven Door Blower Wheel 32 11090 16 11090 18 30200 03 30200 12 30301 02 30303 06 30303 16 30401 09 30402 27 30503 01 30600 02 30705 03 30700 06 30701 05 30900 10 30901 08 31110 01 31400 04 31400 26 31602 04 31603 04 31604 01 31604 02 31800 01 31800 04 40102 10 40102 15 40102 16 41100 08 50800 49 1 20104 07 20104 50 50312 02 51100 45 51100 46 70603 15 70701 19 70701 25 71301 04 71500 05
32. pe 208 EE TU COMPUTER 1 DECK 240 433 367 367 1166 28 9 289 26 486 lt 2 DECK 208 891 891 55 23 33 60 748 60 12 2 DECK 240 8 8 733 23 33 55 3 577 553 97 2 lt gt E QJ LIGHT RELAY SWITCH SERVICE CONNECTIONS NO NC CO THREE PHASE SINGLE PHASE BACKUP _ B is L1 Le L3 L1 L2 d E C SWITCH 3 1 DECK 14 E 3 13 24 GROUND LUG 3 2 DECK 1 4 7 2 5 8 36 1 3 5 7 4 6 8 a STEAM OFF 8 4 BACKUP STEAM BACKUP O SECOND DECK n SWITCH WIRING IDENTICAL BUZZER c FIRST DECK 2 1 5 OFF STEAM wu 5 5 il ary STEAM OVEN LIGHTS C 3 7 INTERFACE Y 40 4 8 FAN HI 24 2 SECOND DECK HEAT J CIRCUIT BREAKERS FAN LB FROM MAIN L CONTACTOR TSTAT OP TIONAL STEAM STEAM CONTROL O MS B H HEAT 24 POLE TERMINAL BLOCK H gt lt lt lt gt CD VOLTAGE SELECTION SWITCH RTD UP FOR 40 DOWN FOR 208 STEAM ol FROY O CONTROL F SOLENOID STEAM VALVE YAG WHEN PRESENT L LO V SUPRESSOR 2750W 208V 3667W 240V H HI V SUPRESSOR w FUSE 0 ams 1 MOTOR HEAT me FUSE FROM CONTROL a 600 SNUBBER 0 4 1 cal Ace m D 100v SNUBBER 51 Er 53 52 56 54 50 VN DOOR SWITCH Q c CERAMIC CAPACITOR C NC 79 RED 25 BLACK 24 NC
33. ture and cool air from around the product allowing heat to penetrate more quickly gt Cooking times can be shortened gt Check the product near the end of the initial cooking cycle by turning on the oven light and looking through the oven door windows gt Do not open the oven doors during baking as this will change the baking characteristics of the oven gt Load each shelf evenly Spaces should be maintained equally between the pan and oven walls front and back 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 gt 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 LOADING Place product as close to oven as practical Open oven doors and load quickly but carefully gt If only one pan is required load on center shelf If two pans are required load on top and bottom shelf If three pans are required load on top shelf bottom shelf and center shelf UNLOADING gt Itis a characteristic of all convection ovens to unload the top shelf before the bottom shelves The rising of heat and the hot
34. wer switch Check power switch for normal operation Replace as necessary Defective back up relay Check relay for normal operation Check coil for 24 VAC If 24 VAC is measured Turn oven off and gt Check coil for 7 2 Replace as necessary If 24 is not measured gt Verify that manual override switch is in off position Check manual override switch for normal operation Check wires for any shorts 16 IBLESHOOTING PROBABLE CAUSE CORRECTIVE ACTION Defective control transformer Check transformer for normal operation 12 VAC NOTE Unplug secondary side of control transformer from CPU before performing any tests WARNING TURN UNIT OFF BEFORE CHECKING ANY RESISTANCE gt Check primary coil for 208 240 VAC and 630 Q Check secondary coil for no less than 10 5 VAC and 1 Q If voltage is measured on primary gt Check for voltage on secondary gt Replace transformer If voltage is not measured on primary Check wires for any shorts Defective rectifier Check for no less than 10 5 VAC on and 5 VDC on 2 If correct voltage is present at and present but low at TP2 unplug both ribbon connections from CPU and re measure at TP2 If voltage remains low at TP2 replace CPU 40102 311 If voltage at TP2 increased to 5 VDC when ribbon was unplugged plug ribbon back in to CPU and disconnect from Interface board Re measure at
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