Lang LRO-1E Installation, Operation, Maintenance, & Troubleshooting Download

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Lang Manufacturing Company

6500 Merrill Creek Parkway

Everett, WA 98203

Rev. # A

Phone: 425-349-2400 Fax: 425-349-2733

WWW.LANGWORLD.COM

Installation, Operation, Maintenance, & Troubleshooting

Model: LRO-1E-

Rack Oven

Summary of Contents for LRO-1E

Page 1: ...facturing Company 6500 Merrill Creek Parkway Everett WA 98203 Rev A Phone 425 349 2400 Fax 425 349 2733 WWW LANGWORLD COM Copyright 2002 Installation Operation Maintenance Troubleshooting Model LRO 1E Rack Oven ...

Page 2: ... AGENT EVACUATE ALL PERSONNEL FROM THE AREA WARNING IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE INJURY OR DEATH READ THE INSTALLATION OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT DANGER POTENTIALLY HAZARDOUS SITUATION WHICH IF NOT AVOIDED COULD RESULT IN DEATH WARNING POTENTIALLY HAZARDOUS SITUATION...

Page 3: ... OF CONTENTS 3 2 WARNING 4 3 EQUIPMENT DESCRIPTION 7 4 INSTALLATION INSTRUCTIONS 9 5 EMERGENCY OPERATION 13 6 GENERAL OPERATION 14 7 PROGRAMMING 16 8 GENERAL MAINTENANCE 20 9 SAFETY CONSIDERATIONS 23 10 ILLUSTRATED PARTS BREAKDOWN 24 11 WIRING DIAGRAMS 33 12 WARRANTY 35 ...

Page 4: ...N ELECTRICAL CODE C22 1 PART 1 GROUNDING THIS APPLIANCE MUST CONFORM TO CANADIAN ELECTRICAL CODE CSA C22 2 WARNING 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 N ACCORDANCE WITH ALL APPLICABLE CODES WARNING DO NOT ALLOW ANY PART OF YOUR BODY TO...

Page 5: ...lt 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 NOTICE To maintain optimum safety and performance for LANG Rack oven models LRO 1E LRO 2E it is recommended that a program of scheduled periodic maintenance be implemented It s sole responsibility of the user to establish schedule and enforce such a progr...

Page 6: ...osened Air wings can be adjusted singly or together to modify a side to center bake Be advised that adjusting air wings affect the entire rack from top to bottom For this reason the angle of air wings should never be changed more then 1 degree at a time Use the Air Wing Adjustment Diagram in the Appendix section of this manual as a guide when making adjustments When desired angle is obtained check...

Page 7: ...nd simple rack loading and unloading Gentle rack lift and rotation protects delicate products The rack is designed to hold up to twenty 18 x 26 sheet pans A built in steam generator generates steam quickly Fully adjustable airflow for even cook Controls Large digital display which is easy to understand and operate Icon driven touch panel allows for easy operation Pre Programmable Product Selection...

Page 8: ...ood is on whenever the oven is on The POWER switch on the oven control panel activates the blower The blower must be running before the oven will operate A factory installed airflow switch disables heat until airflow exists Interior Door Release This door release allows the door to be opened from inside the oven WARNING WIRES ENTERING THE DISCONNECT MAY STILL BE LIVE EVEN WHEN THE SWITCH IS TURNED...

Page 9: ...or tilting the oven up is 105 inches Clear access is needed to the roof or exterior of the facility for hood exhaust Check local codes for correct venting Access is needed for an air gap drain in the rear left corner of the oven Adequate space is needed in front of the oven to load and unload racks Racks are hot and need space to cool The hood exhaust will need at least 600 CFM of make up air Loca...

Page 10: ...aising Raise the oven to its vertical upright position with the use of a forklift or other lifting device Provide a means to lower the oven to the floor without dropping Secure two 5 000 lb lifting straps to the rear lifting eyes on top of the oven and to a point on the forklift 40 inches from the mast Secure a third 5 000 lb strap to the front lifting eye on top of the oven and to the carriage of...

Page 11: ...floor Do Not drill too deep o Clean the holes of concrete dust o If the oven is mounted on stone or ceramic tile extend the holes and the anchors into the concrete substrate Install the anchors in the holes and set in place with the anchor setting tool Note One good solid blow is better than many little taps Install the 20 flat head screws in the anchors Use the anchor washers at the holes in the ...

Page 12: ...ening with the associated ducts on the oven Attach the hood side support trim and the rear trim to the top of the oven with 10 32 stainless steel truss head machine screws Attach the hood to the exhaust and vent ducts using 10 stainless steel sheet metal screws Install the hood airflow sensor tube at the hood collar opening and at the airflow switch at the junction box located at the top of the ov...

Page 13: ... caps Place an oven rack in the oven Measure the spacing between the oven rack top channels and the rack carrier The space between the carrier lip and the top flange of the rack channel should be approximately Adjust the lifter micro switch mount on the lifter body to compensate Close the loading door and check toe direction of rotation of the blower motor The motor should rotate counter clock wis...

Page 14: ...m from the main menu of pre saved programs When selected the temperature setting changes to the correct temperature for the product Load a rack full of product into the oven engaging the rack carrier automatically The door of the oven is closed and the rack is lifted off of the floor allowing it to rotate smoothly If a steam time has been set water flows into the steam generator and cascades throu...

Page 15: ...the buzzer You can view your product through the window If it appears ready SLOWLY open the loading door about 6 inches Let steam and hot air escape from the opening to be removed through the hood Open the door completely The rack carrier will come to a stop and the rack will lower USING OVEN MITTS flip the rack stop to the unloading LEADING FLAP DOWN position Remove the rack from the rack carrier...

Page 16: ...utton to advance to the Vent setting 8 If the vent is to be open for a period of time there are two methods to do this Either press the Vent button during the count down cycle when the vent is to be open and then press it again to close it or the other method requires that a separate tier be set up To do this press the Select button until the time for the second tier is highlighted using the up or...

Page 17: ...the time the vent will be open Press the up or down arrow keys until o is displayed this will open the vent for the total tier time 6 If no vent is required press the Select button this will highlight the BL Using the up or down arrows select either fan on d fan delay or p pulse fan If is selected then the fan will run continuously through the tier if d is selected then the fan will be off for the...

Page 18: ...perature 375 F Steam 00 Vent BL 1 Turn the oven on and select a recipe press the Program button 2 Set Time to 12 minutes 3 Press Select and set the temp to 375 F 4 Press the Save button and select a icon and a name Roast Beef 350 degrees for 3 hours 5 seconds of steam every 30 minutes no vent no fan delay Step 1 2 3 4 5 Time 36 00 36 00 36 00 36 00 36 00 Temperature 350 F 350 F 350 F 350 F 350 F S...

Page 19: ... 6 Press the Select button and set the temperature to 425 F 7 Press the Select button until the BL function is highlighted Set the BL for d 8 Press the Select button until the time function is highlighted for the third tier Set the time for 1 minute 9 Press the Select button and set the temperature to 425 F 10 Press the Select button until the vent function is highlighted Set the vent to o 11 Pres...

Page 20: ...ion 3 Check loading door handle striker adjustment and verify the mounting screws are tight 4 Check interior loading door release for proper operation 5 Check hood filters with soap and water 6 Check and tighten any loose screws on both the interior and exterior of the oven 7 Check the rack lift assembly for proper operation Adjust limit switch as needed 8 Check rotator chain adjustment and its al...

Page 21: ... time four shutters total Uneven Baking If side to center bake is uneven check the angles of the wings to determine if they match the factory settings The air wings are long adjustable channel shaped parts that are attached to the fixed vertical sides of the pressure panel There are two air wings per oven The angles of the air wings must be checked while the oven is cool If side to center bake is ...

Page 22: ...ing around oven should not be blowing directly at or above oven Gas pressure when the gas burner is on The oven suction panel Release paper sucked into the panel will reduce airflow Blower rotation If blower rotation is incorrect it will cause an uneven bake and severe damage to heat exchanger Your product Contact your supplier to determine if there has been any change in raw or mixed product Your...

Page 23: ...peration maintenance and repair of the subject units It is the responsibility of the owner operator to insure this happens C A regular periodic program of cleaning inspection and maintenance must be established and comprehensive maintenance records maintained It is the sole responsibility of the user to establish schedule and enforce the frequency and scope of these programs in keeping with recomm...

Page 24: ...ETL File 3028821 24 Rev A 2002 PARTS LIST 1 Item Part Description Qty 1A 11090 34 Element 208 Volt 9 1B 11090 35 Element 240 Volt 9 1C 11090 36 Element 480 Volt 9 ...

Page 25: ...02 39 BRASS PIPE NIPPLE NPT 4 1 70101 102 BRASS TEE NPT 5 1 70302 39 BRASS PIPE NIPPLE NPT 6 1 70403 03 SOLENOID VALVE WATER 7 1 70307 08 PIPE REDUCER X 3 8 8 1 41100 33 TEMPERATURE SENSING PROBE 9 1 70101 100 COMPRESSION FITTING FOR PROBE 10 1 30301 16 MICRO SWITCH DOOR 11 1 70701 92 BRASS FITTING PACKING FOR STAT 12 1 70307 04 PIPE REDUCER X 1 4 ...

Page 26: ...002 PARTS LIST CONT D ITMEM QTY PART DESCRIPTION 1 1 50800 103 Main Handle Assembly 2 1 150 786 Female Hinge Assembly Lower 3 1 150 786 1 Female Hinge Assembly Upper 4 1 150 703 Escape Handle Assembly 5 1 71301 19 Window Assembly ...

Page 27: ...150 657 Dinrail 6 4 1 30700 15 Contactor Circulation Blower 5 1 30707 03 Overload Circulation Blower 6 1 31600 12 Light Ballast 7 5 30701 05 Relay 24 Volt 8 1 31400 27 Transformer 120 24 12 Volt 9 1 31400 31 Transformer 10 1 30707 01 Overload Lift Rotate Assembly 11 1 31200 08 Ground Lug 12 1 60301 142 Panel Label 13 1 40102 54 Circuit Board Microprocessor ...

Page 28: ...ST CONT D 5 1 4 3 2 Item Part Description Qty 1 30500 11 Terminal Block 2 Pole 150 Amp 2 2 30700 03 Contactor 3 Pole 208 240 VAC 40 Amp 3 3 31800 14 Circuit Breaker 1 Phase 50 Amp 9 4 31200 08 Ground Lug 1 5 31400 27 Transformer 120 24 VAC 1 ...

Page 29: ...30200 57 LINEAR ACTUATOR 2 1 50803 004 LIFTER PIN 3 1 150 138 FORK CLIP TEFLON 4 1 150 137 FORK CLIP S S 5 1 150 135 LIFTER WASHER 6 1 30301 02 MICRO SWITCH 7 1 30308 05 AIR SWITCH 8 1 30401 26 OVER TEMP THERMOSTAT 9 1 150 179 MICRO SWITCH BRACKET 10 1 150 158 MICRO SWITCH ACTUATOR ...

Page 30: ...70200 11 BUSHING 3 1 70200 12 WASHER 4 1 73000 06 DRIVE SPROCKET 5 1 73500 05 MOTOR SPROCKET 6 1 40704 06 MOTOR CAPACITOR 7 1 71500 12 ROTATION MOTOR FAN 8 1 30200 56 DRIVE MOTOR 9 1 30301 15 ROTATOR MICRO SWITCH 10 1 50803 002 DRIVE COLLAR 11 1 70200 14 WASHER FRICTION THRUST 12 1 70200 13 BUSHING CHAIN GEAR ...

Page 31: ...28821 31 Rev A 2002 PARTS LIST CONT D ITEM QTY PART DESCRIPTION 1 1 30200 59 MAIN BLOWER MOTOR 2 1 71500 14 MAIN BLOWER HEAT SINK 3 1 20601 07 RETAINING SNAP RING 4 1 150 368 BUSHING 5 1 71500 13 MAIN BLOWER WHEEL ...

Page 32: ...DESCRIPTION 1 1 150 135 LIGHT HOUSING BACK 2 2 31602 07 LIGHT SOCKET 3 1 31600 13 4 FOOT FLUORESCENT BULB 4 2 20201 09 5 16 WASHER 5 1 50803 009 DAMPER ROD 6 1 150 790 DAMPER FORK 7 1 150 353 DAMPER ARM 8 1 150 349 DAMPER MOUNT 9 1 70403 04 120 VOLT DAMPER SOLENOID ...

Page 33: ...57 58 59 12 13 14 15 16 17 18 2 2 31 32 33 34 35 36 1 21 120 Volt 31 36 208 240 Volt 41 61 24 Volt Shielded 5 Volt DC Cable J1 J6 Computer Inputs and Outputs P1 1 9 Plug Control Component Mount P2 1 9 Plug Lift Rotate Assembly CB3 AS1 HL1 49 50 IL1 44 44 44 45 45 45 To Vent Motor 57 45 BLK RED BLK RED 7 LINE P1 5 P1 6 P2 1 P2 2 P2 3 P2 4 P2 5 CA1 TB1 TB2 J6 RTD 19 120 VAC 20 21 L1 T1 T7 L2 T2 T8 L...

Page 34: ...S ELEMENTS 1 2 3 LANG MODEL LRO 1E HEATER CIRCUIT CB 6 CB 5 CB 4 R4 R5 R6 7 9 11 8 12 10 CONTACTOR 2 CONTROLS ELEMENTS 4 5 6 CB 9 CB 8 CB 7 R7 R8 R9 13 15 17 14 18 16 CONTACTOR 3 CONTROLS ELEMENTS 7 8 9 MR2 MOTOR RELAY NORMALY OPEN NEUTRAL 120 VAC MR 7 Heat Call from Circuit Board 49 45 Air Switch High Limit ...

Page 35: ...e defective during the warranty period As to warranty service in the territory described above Lang will absorb labor and portal to portal transportation costs time mileage for the first 12 twelve months from the date of installation or eighteen 18 months from date of shipment from Lang Manufacturing which ever comes first IV This warranty does not cover routine general maintenance periodic adjust...

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