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Middleby Marshall PS536ES User's Manual

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3. ITEM QTY P N DESCRIPTION 1 1 47321 DIGITAL TEMPERATURE CONTROLLER 2 1 51067 CONVEYORDRIVE MOTOR W PICKUP ASSY 3 2 30153 DRIVE MOTOR BRUSHES 4 1 37337 KIT CONVEYOR SPEED CONTROLER 5 1 33984 KIT THERMOCOUPLE 6 6 1 50517 BELT BLOWER 7 1 44687 MOTOR BLOWER 208 230V 1 2HP 8 1 33983 HIGH LIMIT CONTROL MODULE 240V 9 1 36451 COOLING FAN BACKWALL 10 1 97525 COOLING FAN CONTROL COMPARTMENT 11 1 37498 AIR SWITCH 12 2 44914 CONTROLLER POWER 208V 240V 13 2 44568 CONTROLLER POWER 380V 480V 14 1 58238 HEATER 208V 17kW 15 1 50232 HEATER 240V 17kW 16 1 50587 HEATER 380V 17kW 17 1 50589 HEATER 480V 17kW 44 SECTION 5 TROUBLESHOOTING SECTION 5 TROUBLESHOOTING PROBLEM PRODUCTS ARE OVERCOOKED OR UNDERCOOKED Check for correct setting on tempera ture controller Check for correct setting of conveyor speed control Turn temperature control to correct setting Verify the food preparation process If products still cook incorrectly call your Middleby Marshall Set the conveyor speed control at correct setting Service Agency PROBLEM OVEN DOES NOT HEAT Check to see if both BLOWER HEAT switch are in the ON or position If oven does not heat call your Middleby Marshall Service Agency PROBLEM BLOWER MOTOR IS RUNNING YET LITTLE OR NO AIR BLOWS FROM AIR FINGERS Air fingers reassembled incorrectly after cleaning Assemble air finge
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6. 30 D Crumb P nS 30 E WIndOW caci n 30 Il MAINTENANCE MONTHLY 31 A Removing Conveyor From Oven For Cleaning 31 B Air Fingers Disassembly For Cleaning 33 C Cleaning the Window 34 D Reassembly of Air Fingers 34 E Reinstall End 37 F Conveyor Reassembly Into Oven 38 G Checking Conveyor Belt Tension 38 H Conveyor Belt Link Removal 39 I Replacing Conveyor 40 J Attaching Drive Chain 40 MAINTENANCE EVERY 3 MONTHS 41 A Cleaning the Blower Fan Motor 41 B Electrical Terminals 42 Ventilation 42 D Checking the Blower Fan Belt 42 E Blower Fan Shaft Bearing Lubrication 43 F Split belt Conveyor Shaft Cleaning 43 IV MAINTENANCE EVERY 6 MONTHS 44 PS540 SERIES ELECTRIC OVEN KEY SPARE PARTS mp 46 KEY SPARE PARTS KIT 46 SECTION 5 TROUBLESHOOTING Troubleshooting
7. 6 D Window 6 E Cooling aaasassasakusswssawawaawsssasauwwawsssskawsawa 7 F Air Fingers and Blank Plates See Figure 1 9 8 SECTION 2 UNLOADING 1 u u u 9 PS536 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT 10 PARTS LIST FOR SERIES PS536 ELECTRIC OVEN INSTALLATIONKIT 10 PARTS LIST FOR PS536 SERIES SINGLE OVEN OPTION BASE W 15 LEGS amp TOP P N 34832 11 PARTS LIST FOR PS536 SERIES DOUBLE OVEN OPTION BASE W 6 LEGS CASTERS amp TOP P N 34833 12 PARTS LIST FOR PS536 SERIES TRIPLE OVEN OPTION BASE w OUTRIGGERS amp TOP P N zn A 13 RESTRAINT CABLE INSTALLATION 16 UTILITY ROUGH IN DIMENSIONS AND POSITIONING FOR PS536 SERIES OVENS 17 CIRCUIT BREAKER 17 ELECTRICAL SPECIFICATIONS 17 ELECTRICAL RATING 17 SUPPLY WIRE sionista 17 SUGGESTED 17 VENTILATION GUIDELINES 18 VENTILATION HOOD 18 VENTILATION CAPTURE 18 II ELECTRICAL CONNECTION I
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10. UNZASNLIVINCGON HOIIMS Y3MO18 IMYA ONLIVINCOMN FT 88 FERES 2855 2535 EDO YOOVWYOJSNVHL YNIIVWYOJSNVYL YOIVWYOJSNVYL v8 WAST YOLNNASIO unaNorsia SH3EIVHOSNN3HL avais INDY YAWNOISNVUL VONV8 SINOVI TAY N3 0105 YYSN Wed 1N3WaASTTDYG XNWAWNT Slavi v Sun od 531 8 04 GNV830V1831NN31839 LIW YNN 1211538 INO 1788 LMAS 404 NOOVIdVO YINHININV NEN 13442 dn Did ZDINMHOS ION ZINNMHOS 3553 38 NOUW1ND34 TOULNOD 3TIOHINONSLBNOIQNIWHDS39 35531130 NOV 0934 3TIOHLNOXSLBXDIQNIMH2S35 TOULNOD 93345 1081402 03345 NOQVINOGSNVILLT3Q 2D YOLOW ponds hi DiO4SN VH in310W S M NOLOWONVE WONLSHORID YOLOW HOJANOD 9 mE INON 108 uanvHosrialSons 314102 ISI 3HOWVW ama 3QNVWWOD NO n08 FOdILUVAONY3L ND HOLIMS 13538 f 3dA13140030W3HL WIHNJOWUEHL warvHostam HOLIMS 13538 MOQVILIN3A UNBIVILLNZA oo 32145 ung 434 vez En YOQVIYOASNYYL 30 Ist VE YOINNASIO YNIAOANOD unaNorsia MIBIVWAOISNVEL YALIVHOSSONVasNW1 SUBDVEOSNN3UL MNOINWIOJSNVIL HOKANCO
11. VANO SLL OEC WOINNASIC unaNorsia Sua rIVHOSNN3UL LINDE ve UNALM V130n9N31 474 012 38831 ve SSMHISNVSONNaYa 2NBLINN WAS YN vand aan TG VLiSID YOLANYYILNI m av or a gt YANYHISISNVHI YINILS YNIIVLNWWOD 3Hnv 3109 MOON RS ARES WnaDNorsia Nnu5 SH TH1ND 1483 YILIVHOSUNLALES DINNI NLIVH3D N3SSOTH2S39 8330 1 A SU3LIVHOSNN3UL HOLIMS H1 M3EIVHOSSENIDD3OSVHOLINOW YAVIY LINDY quo 35012 QBH ON a 5 e HOLIMS 13 02 HOLOW 402 6 ZO ZON 90 902 wo 802 ve 8 7 OUH 1905011090 10N LO LON LON 601 537 31v 2 pe SURNE 3000018 YALILOWISNDINAS A0yz 80Z Yanay 181 4 SECTION 7 ELECTRICAL SCHEMATICS NOTES 65 SECTION 7 ELECTRICAL SCHEMATICS NOTES 66 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 NOTICE During the warranty period ALL parts replacement and servicing should be performed by your Middleby Marshall Authorized Service Agent Service that is performed by parties otherthan y
12. CONVEYOR CONVEYOR 9 Allow the oven to preheat for 10 minutes after ithas reached switch to the ON the set point temperature I position I B DAILYSHUTDOWNPROCEDURE 1 Turnthe HEAT and BLOWER 645 swit Ee ches to the OFF 4 f necessary adjust the position Note that the conveyor speed setting blowers will remain in op by pressing the or eration until the oven has pushbuttons on the con cooled to below 200 F veyor speed controller to 93 C change the displayed Bake ame 2 Make certain that there CONVEYOR are no products left on 5 Adjust the temperature mM the conveyor inside the rn controller to a desired set T oven Turm the CON temperature if neces Sul VEYOR switch to sary the OFF O position e Press the Set Point ee and Unlock keys at 3 Open the window to allow the oven to cool faster the same time Wait forthe SET PT light to turn on 4 Afterthe oven has cooled and the blowers have turned off Press the Up Arrow and Down Arrow Keys as necessary to adjust the set Middleby Marshall Oma SDD E e point Turn the HEAT switch to the ON 1 position and wait for the HEAT ON light to turn on Middleby Marshall a O sPLock OVER TEM PD 24 switch th
13. Removable Conveyor Assembly Conveyor s Speed Control s Control Console Window Legs with single and double ovens Short Legs with triple ovens Removable End Plugs Removable Crumb Pan Locking Casters Rear casters are not locking casters Figure 1 6 PS536ES Series Oven Components Locations SECTION 1 DESCRIPTION II COMPONENT FUNCTION A Conveyor Motor and Conveyor Belt The conveyor belt is driven by a variable speed electric motor Figure 1 7 operating through a gear reducer The motor speed is controlled by a digital control The stain less steel wire belt can travel in either direction at variable rates ranging from 3 minutes to 30 minutes this is the time that a product can take to pass through the oven B Blower Fan The blower fan is located at the rear of the oven This blower forces heated air through the air fingers The BLOWER Heat switch must be set to or I for oven warmup and baking Electric Heaters There is one heater element mounted on the inside of the left panel The element is connected to an electrical control which is energized by the temperature controller If the pilot flame does not light or a loss of flame occurs the main gas valve closes The main burner gas is extinguished when the HEAT switch is set to OFF or O D Window Awindow onthe front of the oven permits viewing the items being ba
14. example of conduction Radiation This path has to do with objects radiating heat Dark objects absorb heat whereas light or shiny objects reflect more heat This is the reason that the inside of a Upper Air Fingers SECTION 1 DESCRIPTION PS536ES Series Oven is light in color To reflect more heat back onto the food product Convection This path has to do with moving a volume of air Itexplains why hotair rises and cooler air replaces hot air An industrial application of this principle is to incorpo rate a fan to force the hot air movement which in turn increases the heat transfer to the food product Each PS536ES Series Oven has a large fan style blower to move the hot air through the air fingers and onto the product to cook bake the food product most efficiently 2 Temperature is the intensity of heat at the point where it is sensed As discussed above heat flows by conduc tion radiation and convection The speed at which the heat flows is determined by the temperature difference between the oven and the food product The larger the difference the faster the heat flows to the item that is being baked Conveyor Belt s Window ANI _ Lower Air Fingers Figure 1 4 PS536ES Series Oven Air Flow SECTION 1 DESCRIPTION Il PRINCIPLE OF AIR FLOW Cont
15. Charts 47 SECTION 6 PARTS LIST OVEN PANELS WINDOW AND LEGS 51 CONTROL PANEL 53 BLOWER AND SHROUD 55 CONVEYOR cicer engen nennen 57 SPLIT BELT CONVEYOR 59 MACHINERY COMPARTMENT 61 SECTION 7 ELECTRICAL SCHEMATICS Wiring Diagram E208 240 50 60 3PH 4W 5536 63 Wiring Diagram E380 480 50 60 3PH 5W 5536 64 Wiring Diagram E380V 50 60 5W 536 65 NOTE Wiring Diagrams are in Section 7 of this Manual The diagram for each oven is also on the lower inner surface of its Control Console SECTION 1 DESCRIPTION SECTION 1 DESCRIPTION MODEL IDENTIFICATION The Middleby Marshall PS536ES Series may be used eitherasasingle ovenor stackedfor use as double ortriple ovens The major difference between the oven models in this series is the width of the conveyor Asingle PS536ES Series Oven Figure 1 1 is mounted on abase pad with legs and casters A double oven Figure 1 2 consists of two stacked single ovens A triple oven Figure 1 3 consists of three stacked single ovens The lower oven is mounted on a base pad with short legs and casters On a double or triple oven the ovens operate completely independent All ovens use identica
16. Flange of Finger Manifold Outer Plate Figure 4 18 33 SECTION 4 MAINTENANCE 5 Install fingers and blank plates correctly with edges interlocked and no space between edges Incorrect Too Much Space Top Finger Blank Plate Tab on Outer Plate of Finger Located in Groove t T Top Finger ncorrec oo Much Space Blank Plate Tab on Outer Plate of Finger Located in Groove Correct Top Finger Edges Overlap Completely Blank Plate Tab on Outer Plate of Finger Located in Groove Figure 4 19 34 E Reinstall End Plugs 1 Reinstall lower end plug Be sure to tighten two wing screws on the end plug 2 Reinstall conveyor 3 Reinstall upper end plug Be sure to tighten two wing screws on the end plug Conveyor Rear Stop Conveyor End Stop Removable Conveyor Assembly Legs with single and double ovens Short Legs with triple ovens SECTION 4 MAINTENANCE Figure 4 20 Blower Cooling Fan Mot otor Optional Removable C Mal Adjustabla Air Fingers onveyor Motor Eyebrow Inside Baking Chamber Machinery Compartment Temperature Controller Conveyor s Speed Control s Control Console Removable End Plugs Removable Crumb Pan Locking Casters Rear casters are not locking casters Figure 4 21 35 SECTION 4 MAINTENANCE F C
17. MINIMUM CLEARANCES Rear of Oven to Wall 6 150mm Non control End of Oven to Wall 0 Control End of Oven to Wall 0 3716 15 HEN E 52 1 4 1327 mm 13 SECTION 2 INSTALLATION 1 ELECTRICAL JUNCTION BOX 60 1524 mm 2 RECOMMENDED MINIMUM CLEARANCES Rear of Oven to Wall 6 150mm Non control End of Oven to Wall 0 39 11 16 1008 mm ITE 37 15 16 Control End of Oven to Wall 0 Figure 2 7 MODEL PS536ES TRIPLE OVEN DIMENSIONS RESTRAINT CABLE INSTALLATION Install the restraint cable assembly on the oven as shown in Figure 2 6 Cooling Fan 3 5 16 Rear Surface of Oven 3 4 19mm Eyebolt on Oven Base Pad Restraint 49 3 4 Restraint Cable 1264mm Cable Assembly Assembly 3 4 19mm Eyebolt Wall of Structure To Eyebolt Rear View On Wall Figure 2 8 Restraint Cable Assembly Installation 14 SECTION 2 INSTALLATION UTILITY ROUGH IN DIMENSIONS AND POSITIONING FOR PS536ES SERIES OVENS WARNING DO NOT USE CONDUIT OR GAS LINE FOR GROUND CONNECTION CAUTION IT IS REQUIRED THAT THE OVEN BE PLACED UNDER A VENTILATION HOOD FOR ADEQUATE AIR SUPPLY AND VENTILATION ELECTRIC SUPPLY TO BE PROVIDED BY CUSTOMER CIRCUIT BREAKER Separate circuit breaker with lockout tagout electrical shutoff for each oven Wire each oven separately 100 Amp circuit break
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19. has been reestablished follow normal startup procedure B Shutdown Procedure 1 Turn the BLOWER HEAT switch to OFF or O NOTE Theblowers will remain on until the oven tempera ture cools downto 200 F 93 C atwhich time they will stop automatically 2 Make certain that there are no products left on the conveyor inside the oven Turn the CONVEYOR switch to OFF or O 3 Open the oven window A SECTION 3 OPERATION TEMPERATURE V Middleby Marshall Z r ri E sPLOCK OVER TEMP HEAT ON ACTUAL TEMP d 87 A V J FRONT MIN Zr BACK MIN 500 E 50 815 SEC Ww BLOWER ON 552 HEAT OFF OFF o ON B CONVEYOR ON Figure 3 6 Control Panel BLOWER Switch Turns the blowers and cooling fans on and off The HEAT Switch has no effect unless the BLOWER Switch is in the ON position HEAT Switch Allows the burner to activate Activation is determined by the settings on the Digital Temperature Controller CONVEYOR Switch Turns the conveyor drive motor on and off Conveyor Speed Controller Adjusts and dis plays the bake time Single belt ovens have one controller Split belt ovens have one controller for each conveyor belt labeled FRONT and BACK
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21. is working properly Figure 4 38 40 SECTION 4 MAINTENANCE D Split belt Conveyor Shaft Cleaning 4 Droptheidlershaftassembly clear of the frame through the front frame slot It is very important that the split belt conveyor drive and idler shafts are removed from the conveyor frame for cleaning and lubrication CAUTION Use a turbine oil or light machine oil DO NOT USE WD40 or similar product These oils evaporate and cause the shafts to seize 1 Perform the conveyor removal steps described in Monthly Maintenance paragraph After the conveyor is removed lay it on a flat surface Figure 4 40 2 Remove the two conveyor belts by disassembling the conveyor master links as described in Monthly Mainte nance paragraph H Then remove the two conveyor belts by rolling them up 5 Pullthe front and rear shafts apart and apply oil to both the extended shaft and the interior of the hollow shaft Using a rag wipe oil off parts Repeat until shafts are clean Apply more oil to shafts then reassemble 3 Remove the conveyor adjustment bolts to allow the idler brackets to swing free Figure 4 41 Figure 4 39 41 SECTION 4 MAINTENANCE 6 Make sure bronze washer is in between the two halves 9 Loosen the split locking collar Figure 4 42 7 Place the idler shaft assembly back into place and reinstall the adjustment screws Figure 4 45 10 Remove drive shaf
22. kitchen can cause heat related problems to the oven components as if there were no ventilation at all The best method of supplying return air is through the heating ventilation and air conditioning system Throughthey system the air can betemperature controlled for summer and winter Return air can be broughtin directly from outside the building but detrimen talaffects can resultfrom either extreme seasonal hot and cold temperature from the outdoors NOTE Returnair from fan driven system within the hood must not blow at opening of bake chamber or poor oven baking performance will result 8 203mm minimum 1 25mm minimum Figure 2 10 Vent Hood ELECTRICAL CONNECTION INFORMATION FOR PS536ES SERIES OVENS WARNING Authorized supplier personnel normally accom plish the connections for the ventilation system electric supply and gas supply as arranged by the customer Following these connections the factory authorized installer can perform the initial startup of the oven Check the oven data plate Figure 2 11 before making any electric supply connections Electric supply connections must agree with data on the oven data plate NOTE The electric supply installation must satisfy the requirements of the appropriate statutory authority such as the National Electrical Code NEC ANSI NFPA70 U S A t
23. of the oven s to allow convenient access to safety switches SECTION 2 INSTALLATION Il VENTILATION GUIDELINES A mechanically driven ventilation system is required for the PS536ES Series Middleby Marshall conveyorized electric ovens The minimum hood canopy dimensions are outlined below Local codes and conditions vary greatly from one area to another and must be complied with Following are the suggested requirements for good ventilation Please re member these are recommendations or guidelines you may have a special condition or problem that will require the services of a ventilation engineer or specialist Proper ventilation is the oven owner s responsibility Improper ventilation can inhibit oven performance It is recom mended that the ventilation and duct work be checked out every three months Grease filters in the intake of the hood may be required by local codes 12 305mm 12 305mm minimum minimum E 2 51mm E minimum M e E VENTILATION HOOD The rate of air flow exhausted through the ventilation system is generally between 1400 and 2500 cu ft min 40 and 70 m min but may vary depending on the oven configuration and hood design To avoid a negative pressure condition in the kitchen area return air must be brought back to replenish the air that was exhausted A negative pressure in the
24. that the Set Point is above 200 F 93 C Oven is operating but little or no air is blowing from air fingers Air fingers may have been reassembled incorrectly after cleaning Turn the oven to the OFF or O position and allow it to cool Disconnect electrical power to the oven Refer to Section 4 Maintenance for instructions on reassem bling the air fingers Conveyor moves with a jerky motion or will not move at all Conveyor may be jammed on an object in the oven or conveyor belt or drive chain tension may be incorrect Turn the oven to the OFF or O position and allow it to cool Disconnect electrical power to the oven Check if the conveyor is blocked by an object inside the oven Refer to Section 4 Maintenance for instructions on checking the conveyor and drive chain tension Food products are overcooked or undercooked Controls may be set incor rectly Check that the set temperature and bake time settings are correct IF THESE STEPS FAIL TO RESOLVE THE PROBLEM CONTACT YOUR LOCAL MIDDLEB Y MARSHALL AUTHORIZED SERVICE AGENT A SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN SECTION 4 MAINTENANCE WARNING Possibility of injury from rotating parts and electrical shock exist in this oven Turn off and lockout or tagout electrical supply to oven s before attempting to disassemble clean or service oven s Never disas semble or clean the oven with the blower
25. 23 LOCATION AND DESCRIPTION OF CONTROLS E Digital Temperature Controller Continuously monitors the oven temperature Settings on the Digital Temperture Controller control the activa tion of the burner Keypad controls allow the operator to select the cooking temperature and monitor oven operation NOT SHOWN F Machinery and Control Compartment Safety Switches Disconnect electrical power to the controls and blowers when EITHER the machinery compartment door OR the control compartment door is opened The doors should only be opened by authorized service personnel SECTION 3 OPERATION I NORMAL OPERATION STEP BY STEP 7 Waitforthe oven to heat to the setpoint temperature Higher setpoint temperatures will require a longer wait The oven A DAILYSTARTUP PROCEDURE can reach a temperature of 500 F 232 C in approximately ee 5 minutes 1 Check that the circuit breaker fused disconnect is in the on x position Check that the window is closed Optional Press the Tem perature key to show m i the Actual Temperature di 2 Tum the BLOWER gt crown in the display and wait Sn walt SWEN e ON Ci for the ACTUAL TEMP for position T light to turn on This al Sen lows you to monitor the oven temperature as it rises to the setpoint 3 Turn the
26. 34mm Long x 47 25 1473mm Wide x 36 1118mm High x The crate and carton must be examined before signing the Bill of Lading Report any visible damage to the transport company and check for the proper number of crates If apparent damage is found make arrangements to file a claim against the carrier Surface Interstate Commerce Regulations U S A require that the claim must be initiated by the consignee within 10 days from the date that the shipment is received APre installation Procedures Manual MM P N 88910 0009 is attached to the exterior wall of the carton This manual contains detailed instructions on unpacking and moving the oven s to the operating site When the transport company notifies you ofan impending delivery arrange to have a forklift at your facility to unload the carton s Instructions for stacking the ovens is continued in a separate manual used by Middleby Marshall Authorized Installers If you have a door wider than the carton simply move the carton into your facility and arrange an appointment with your Middleby Marshall Authorized Installer If your door is narrower than the carton then the oven will have to be unpacked Follow the directions shown in the Pre Installation Procedures Manual SECTION 2 INSTALLATION PS536ES OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT TYPE PS536ES PS536ES PS536ES PS536ES OF Single Oven Double Oven Triple Oven Additional Cavity INSTALLATION Insta
27. 4 Reassemble conveyor drive chain cover and then MAINTENANCE EVERY 3 MONTHS reassemble the bottom cover to the drive chain cover Install both upper end plugs WARNING Shut OFF all electrical power and lock tag out the switch before attempting maintenance work Shut OFF gas supply to oven NOTE It is recommended that the 3 month mainte nance be performed by an authorized Middleby Marshall n f technician A jj A Cleaning the Blower Fan Motor lt To gain access to the blower fan motor open the control Ls cabinet door by removing the three screws Clean the motor burnerblower motor the conveyor drive motor and the surrounding area using either compressed air or CO Thoroughly blow out the motor compartment and vents inside the motor Figure 4 38 Failureto dothis can cause premature failure of blower fan motor Figure 4 35 CAUTION Not cleaning the blower fan motor properly can cause premature failure Fan Motor Blow Out In This Area Figure 4 36 39 SECTION 4 MAINTENANCE B Electrical Terminals Open the control cabinet door by removing the three screws fromthe control cabinet door Tighten all electrical control terminal screws including the electrical contactor terminal screws as shown in Figure 4 37 Figure 4 37 C Ventilation Check that the air circulation throughout the oven is not blocked and
28. Air Finger SECTION 2 INSTALLATION SECTION 2 INSTALLATION NOTE The oven when installed must be electrically grounded in accordance with local codes or in the ab sence of local codes with the National Electrical Code NEC or ANSI NFPA70 NOTE There must be adequate clearance between the oven and any adjacent combustible con struction Clearance must also be provided for servicing and for operation CAUTION It is required that the oven be placed under a ventilation hood for adequate air supply and ventilation CAUTION Do not obstruct the flow of combustion and ventilation air to and from your oven Do not obstruct the ventilation holes in the Control Panel CAUTION On ovens with the Machinery Drive Compartment located at the right end a minimum clearance of 0 to a left side wall 18 to a right side wall and 6 from a back wall to air openings at the rear of the oven must be maintained On ovens with the machinery drive compartment located at the left end a minimum clearance of 0 to a right side wall 18 to a left side wall and 6 from a back wall to air openings at the rear of the oven must be maintained For servicing and cleaning a minimum of 18 clearance from all walls is recommended I UNLOADING Your Middleby Marshall PS536ES Series Oven is shipped partially assembled It will arrive in a carton on a crate Carton size for a PS540 Series Oven is 58 21
29. BLE LIMITED WARRANTY U S A ONLY MIDDLEBY MARSHALL HEREINAFTER REFERRED TO AS THE SELLER WARRANTS EQUIPMENT MANUFACTURED BY IT TO BE FREE FROM DEFECTS IN MATERIAL AND WORKMANSHIP FOR WHICH IT IS RESPONSIBLE THE SELLER S OBLIGATION UNDER THIS WARRANTY SHALL BE LIMITED TO REPLACING OR REPAIRING AT SELLER S OPTION WITHOUT CHARGE ANY PART FOUND TO BE DEFECTIVE AND ANY LABOR AND MATERIAL EXPENSE INCURRED BY SELLER IN REPAIRING OR REPLACING SUCH PART SUCH WARRANTY SHALL BE LIMITED TO THE ORIGINAL PURCHASER ONLY AND SHALL BE EFFEC TIVE FOR A PERIOD OF ONE YEAR FROM DATE OF ORIGI NAL INSTALLATION OR 18 MONTHS FROM DATE OF PUR CHASE WHICHEVER IS EARLIER PROVIDED THAT TERMS OF PAYMENT HAVE BEEN FULLY MET This warranty is valid only if the equipment is installed started and demonstrated under the supervision of a factory autho rized installer Normal maintenance functions including lubrication clean ing or customer abuse are not covered by this no quibble warranty Seller shall be responsible only for repairs or replacements of defective parts performed by Seller s authorized service personnel Authorized service agencies are located in prin cipal cities throughout the contiguous United States Alaska and Hawaii This warranty is valid in the 50 United States and is void elsewhere unless the product is purchased through Middleby International with warranty included The foregoing warranty is exclusive and in lieu
30. Cover Plate E Figure 2 12 Junction Connection Box SECTION 2 INSTALLATION VI CONVEYOR REAR STOP AND END STOP INSTALLATION Locate the conveyor rear stop and end stop in the installation kit Install the rear stop and end stop at the exit end of the oven See Figure 2 13 Conveyor Rear Stop Conveyor End Stop Figure 2 13 Installing Rear and End Stops SECTION 3 OPERATION SECTION 3 OPERATION I CONTROL FUNCTIONS Door Temperature Safety Controller Conveyor Speed Control Blower Heat Switch Conveyor Switch Figure 3 1 PS536ES Series Oven Control Functions WARNING A possibility of injury from rotating parts and electric shock exists in this oven Never disassemble or clean the oven with the BLOWER HEAT switch or any other oven control turned ON or I Turn OFF or and lockout or tagout all electric power to the oven before attempting to clean or service this oven 19 SECTION 3 OPERATION I COMPONENT INFORMATION AND LOCATION Figures 3 1 and 3 2 A Door Safety Switch The Door Safety Switch is located at the lower left side of control panel opening Opening the control panel door permits this switch to open disconnecting power to all electrical controls CAUTION Do NOT touch the wires going to this safety switch Current is always present B Blower Switch The blower switch has two positions T
31. E The outside master links have right and left sides to them The right edge master link has an open hook facing you as shownin Figure 4 31 This will match up with the outer edges ofthe conveyor belt Remember this hook travels backwards on the conveyor Direction of travel Figure 4 31 7 Reconnect the outside master links 8 Replace all parts removed from the oven Figure 4 32 38 I Replacing Conveyor Belt If a section of the conveyor belt needs replacing it can be done with the conveyor assembly either in or out of the oven The section of the conveyor belt furnished with the oven in the installation kit may then be used to replace a section Followthe preceding procedure H Conveyor belt link removal which outlines the disassembly procedure J Attaching Drive Chain 1 Ifdrive sprocket assembly was removed reassemble it into the conveyor drive shaft Be sure flat on end of drive shaft aligns with set screw in conveyor shaft collar Once in place tighten 3 32 set screw 2 Lift conveyor and install drive chain to conveyor drive sprocket and motor sprocket L A Figure 4 33 3 The angle plate located on the underside of the con veyor must be against the lower end plug This is true on both sides of oven Mounting Bracket 7 Lower End Plug Figure 4 34 SECTION 4 MAINTENANCE
32. H PS536 Series Electric Ovens English yz Middleby 7778 Marshall AMIDDLEBY COMPANY owner s operating amp installation manual PS536 Series OVENS Model PS536ES Part No 58367 2005 Middleby Marshall Inc Price 30 00 P 10 06 WARNING FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operation and maintenance instructions thoroughly before installing or servicing this equipment NOTICE The warranty is NOT VALID unless the oven is installed started and demonstrated under the supervision of a factory authorized installer NOTICE Contact your authorized Service Agency to perform maintenance and repairs A Service Agency Directory is supplied with your oven NOTICE Using any parts other than genuine Middleby Marshall factory manufactured parts relieves the manufacturer of all warranty and liability NOTICE Middleby Marshall Manufacturer reserves the right to change specifications at any time KEEP THIS MANUAL IN A VISIBLE LOCATION NEAR THE OVEN FOR FUTURE REFERENCE Model No Serial No Installation Date Mod le No Seri No Date d installation MIDDLEBY MARSHALL No QUIB
33. HS lt 6 8 gt L SL 3dIS3AIHd NVd8WnHO 80 87 90287 10287 L 862 61 81 SWALI CH3dSHOlH ONI LJVHS ATENISSV 08287 22009 08287 Uul Gp 8L HOAJANOO 1738 69009 66005 29009 L 482 E 5 Y 308 83701 96287 818 9 8 L GHvaNv1S Uul Gp 8L HOAJANOO 1738 69009 585006 29009 L AINO 5 3ONv 1H lt Z STOHLNOO 1015 1431 SN3AO 1138 ANOO L13 00HdS lt 6000 60200 gt LE lt 10 gt N L azz sr te T 30IS LHOIY DONO LL OL SWALI LHVHS HOJ H3AOONIVHO A1HIA3SSV 62005 19887 19887 Big CJMBOOHSSSHOIHONIHNSSSY SE XINFTH3LSVIN lt Zizo gt egg 4 5 1 DELE A ge SE NOTAN H3OVdS lt 0801 000S8 gt E uw ONI NIVHO A 18W3SSV 29009 09009 09009 L 92 d i 8 53zNOu8 ONIHSng 6000 56022 gt 9 102 1dvHS u3ovds lt o SER gt es 258 3AIHQHOA3ANOO L33100HdS 2000 69122 gt L S L I38 ANOO L3MDOHAS lt 000 6ZZZZ gt vot 19 LOZ HOLOW 3AIHQHOA3ANOO L35300HdS lt L 14 lt 48 8p gt L Sage 29108 gt L eec 8 SIN3LI ONI LAVHS QHVONV1S ATHIW3SSV lt 68 gt L z A
34. Marshall authorized service technician IV MAINTENANCE EVERY 6 MONTHS A Check brushes on D C conveyor motor when worn to less than 1 10 2 4mm replace the brushes B Clean and inspect the burner nozzle and electrode assembly Also check your oven venting system C Checkconveyor shaft bushings and spacers Replace them if they are worn See Figure 6 5 Conveyor Exploded Drawing items 15 30 and 31 or Figure 6 6 Split Belt Conveyor items 19 23 31 35 and 36 IMPORTANT NOTICES Installation of replacement parts requiring access to the interior of the oven is permitted only by an authorized service technician Ifthere are any problems with the operation of the oven the authorized service technician must be called e lt is suggested to obtain a service contract with a manufacturer s authorized service technician SECTION 4 MAINTENANCE Figure 4 49 4 EU Figure 4 51 43 SECTION 4 MAINTENANCE KEY SPARE PARTS KIT An oven can be purchased with a Key Spare Parts Kit Figure 4 52 The kitcan be purchased when the ovenis ordered or later from a Middleby Marshall Authorized Parts Distributor The kit contains many of the crucial parts that can reduce serious downtime and loss of production if a failure occurs Replacement parts for this kit can be purchased from your Middleby Marshall Authorized Parts Distributor 14 15 16 17
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36. NFORMATION FOR PS536 SERIES OVENS 19 IV ELECTRIC SUPPLY FOR ELECTRIC HEATED OVENS E M 19 VI CONVEYOR REAR STOP AND END STOP INSTALLATION 20 SECTION 3 INSTALLATION CONTROL FUNCTIONS 21 Il COMPONENT INFORMATION AND LOCATION 22 A Door Safety Switch 22 B Blower Switch 22 C Heat neret ees 22 D Temperature Controller 22 E 23 MEASURING CONVEYOR SPEED 23 Ill STEP BY STEP OPERATION 24 A Startup Procedures 24 TABLE OF CONTENTS Continued Page Daily Startup en 24 Power Failure 24 B Shutdown Procedure 24 A Daily Startup Procedure 26 IV NORMAL OPERATION STEP BY STEP 26 V QUICK REFERENCE TROUBLESHOOTING 28 SECTION 4 MAINTENANCE MAINTENANCE DAILY 30 Exterior eee 30 B Cooling Fan 30 C Conveyor Bel
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42. autho rized installer Normal maintenance functions including lubrication adjustment of airflow thermostats door mechanisms microswitches burners and pilot burners and replacement of light bulbs fuses and indicat ing lights are not covered by warranty Any repairs or replacements of defective parts shall be performed by Seller s authorized service personnel Seller shall not be respon sible for any costs incurred if the work is performed by other than Seller s authorized service personnel When returning any part under warranty the part must be intact and complete without evidence of misuse or abuse freight prepaid Seller shall not be liable for consequential damages of any kind which occur during the course of installation of equipment or which result from the use or misuse by Buyer its employees or others of the equipment supplied hereunder and Buyer s sole and exclusive remedy against Seller for any breach of the foregoing warranty or otherwise shall be for the repair or replacement of the equipment or parts thereof affected by such breach The foregoing warranty shall be valid and binding upon Seller if and only if Buyer loads operates and maintains the equipment supplied hereunder in accordance with the instruction manual provided to Buyer Seller does not guarantee the process of manufacture by Buyer or the quality of product to be produced by the equipment supplied hereunder and Seller shall not be liable for any pr
43. can be cleaned in place 32 D Reassembly of Air Fingers 1 Air fingers are made up of one inner plate one outer plate and the finger housing manifold Be sure to match up the markings T1 T2 T3 etc on all the parts of the air fingers as you are reassembling Figure 4 15 2 Reassemblethe inner plate Keep your fingers clear so you won t pinch them The inner plate of a finger will only go in one way because of its design 3 Replace the outer plate by placing your hands flat on the top of the plate and pushing down Keep your fingers clear so you won t pinch them Figure 4 16 SECTION 4 MAINTENANCE 4 Replace the air fingers by pushing in at the back side Remember to replace them according to the numbers marked on them when they were removed They must go IMPORTANT Only M6 Fingers fit in the bottom row All M3 and M1 finger cover plates have extended lips at front This extended lip will not allow these fingers to be installed in the bottom row nd IMPORTANT When inserting fingers the tab on the outer plate must be in the groove as shown in Figure 4 18 There 15 a blocking tab on the outside of the groove which will prevent inserting the finger in the groove if the outer plate is moved away from the flange of the finger manifold back in the same way they came out Figure 4 17 Tab on Outer Plate
44. cooling fans cool the control components and burner blowermotor Thecoolingfan locatedatthe rear ofthe electrical control cabinet blows air into and through the cabinet Air is exhausted through the front of the cabinetand also outthe front of the oven Refer to Daily Maintenance Section for fan intake checking procedure IMPORTANT NOTE The cooling fan operates when the BLOWER HEAT switch is turned ON or I It must operate to keep the control console below 140 F 60 C 3 Turnthe CONVEYOR switch Figure 3 6 to the ON or P position This starts the conveyor belt moving through the oven Set the conveyor speed for the desired baking time Refer to the following Procedures E F and G 22 4 Set the temperature controller to the desired baking temperature See section on bake times to determine desired temperature NOTE For complete temperature controller operation instructions refer to Step C 5 Turn the HEAT switch Figure 3 6 to the ON or I position This completes a circuit to supply electric power to the electric heating system 6 Close front window 7 Oven will reach a baking temperature of 500 F 232 C in approximately 10 minutes Allow the oven to cycle for 30 minutes afterithas reached desired bake temperatue The oven is now ready for baking Power Failure In case of power failure turn off all switches open oven window and remove product After power
45. d Crumb Pan Cleaning 28 Il MAINTENANCE MONTHLY NOTE The oven interior may require cleaning more than once a month depending on the volume of baking To clean the interior you have to disassemble some parts of the oven When cleaning your Series PS536ES Oven note the following PRECAUTIONS 1 Do not use excessive water or saturation of oven insulation will occur 2 Do not use a caustic oven cleaner or the aluminized finger manifold surfaces will be severely damaged When cleaning your oven first remove all heavy debris with a vacuum cleaner Use a damp cloth for light cleaning For heavier cleaning of baked on grease and carbon Blower Cooling Fan Conveyor Motor Optional Rear Stop Adjustable Eyebrow Conveyor End Stop Removable Conveyor Assembly Window Legs with single and double ovens Short Legs with triple ovens Removable End Plugs Locking Casters Rear casters are not locking casters SECTION 4 MAINTENANCE deposits use a non caustic cleaner that will not react with the aluminized finger manifold surfaces You can order non caustic cleaner from your local autho rized Middleby Marshall Parts Distributor in the quantities listed below Part Quantity 27170 0244 Case of Quarts 6 27170 0246 Case of Gallons 4 A Removing Conveyor From Oven For Cleaning 1 Remove crumb pans as shown in Figure 4 2 2 Remove upper and lower end plugs fro
46. e a water hose or pressurized steam cleaning equipment when cleaning the oven Vent Grille Cooling Fan Grille L B Cooling Fan 1 TWO COOLING FAN GRILLES AT THE REAR OF EACH OVEN CONTROL COMPARTMENT MUST BE CLEANED DAILY Clean grilles with a stiff nylon type brush 2 Check the air intake of the cooling fan daily The best time to check is right after starting the oven IMPORTANT NOTE The cooling fan operates when the blower switch is turned to ON I It must operate to keep the electrical control cabinet below 140 F 60 C WARNING IF FAN BLADE IS NOT ROTATING BROKEN OR FAN ASSEMBLY IS MISSING FROM MAIN Figure 4 1 Oven Cooling Fans BLOWERMOTOR SHAFT DONOT OPERATE OVEN REPLACE COOLING FAN BLADE BEFORE OPERATING OVEN Serious damage could be done to the burner blower motor and or solid state electrical components if oven is operated while cooling fan is not running or vent grille is plugged 3 Using a stiff nylon brush clean control compartment vent grille Hotairfrom control compartment exits from this grille C Conveyor Belt Figure 4 2 Everyday just after starting the oven stand at the unloading end of the conveyor and with a brush remove food particles crumbs etc clinging to the conveyor belt brushing them into the crumb pan Figure 4 2 Conveyor Belt an
47. e circuit breaker fused disconnect to the off posi tion IMPORTANT On gas ovens if the HEAT ON light will not illuminate OR if the oven does not heat the gas burner may not have lit Turnthe HEAT 529 BLOWER 6 and CONVEYOR switches to the OFF O position Wait for AT LEAST FIVE MINUTES before restarting the oven Then repeat the Daily Startup procedure CAUTION In case of power failure turn all switches to the OFF O position open the oven window and remove the product After the power has been restored perform the normal startup procedure IF THE OVEN WAS SWITCHED OFF FOR LESS THAN 5 MINUTES WAIT FOR AT LEAST FIVE MINUTES BEFORE RESTARTING THE OVEN The burner will not operate and gas will not flow through the burner without electric power No attempt should be made to operate the oven during a power failure QUICK REFERENCE SP LOCK Light Lights when the set point is locked out from changes This setting can Display Shows the Set Point or the Actual Tem perature in degrees Fahrenheit F or DIGITAL TEMPERATURE CONTROLLER Light Celsius C HEAT ON Lights when the burner is in operation only be changed by service personnel OVERTEMP Light Lights when the oven temperature is greater than 650 F 343 C Refer to Quick Reference Troubleshooting in this section Temperature Key Press this key once to view the Actual Temperatu
48. e operator set temperature The temperature controller continuously monitors the oven temperature and turns on the modulating solenoid valve in a gas heated oven The heat is on for the time required to maintain a constant oven temperature The temperature controller contains a low limit switch which allows the oven to cool down to 200 F 93 C before shutting off the blower A high limit indication ALM 1 will appear on the display if the oven reaches 650 F 343 C Temperature Controller Conveyor Speed Digital Control Conveyor Drive Motor e i Door Safety Switch u Figure 3 2 20 Interior View of Machinery Compartment and Control Console E Conveyor The on off switch for the conveyor motor is on the control panel Also on the control panel is the digital conveyor speed control The digital control can be adjusted from 3 min to 30 min bake time conveyor speed Refer to Figure 3 3 Conveyor speed is measured by the amount of time it takes for an item to go through the bake chamber of the oven MEASURING CONVEYOR SPEED See Figures 3 4 and 3 5 To check conveyor speed place a product item at the entrance end of baking chamber as shown Time how long it takes for the leading edge of the item to go from the entrance end of the baking chamber to the exit end This
49. en Data Plate 17 SECTION 2 INSTALLATION IV ELECTRIC SUPPLY FOR ELECTRICALLY HEATED OVENS Power requirements for electrically heated ovens are usually 208 240VAC 3 phase 4 wire 3 hot 1 ground although ovens built for export can have power require ments of 380VAC and 480VAC These ovens have a 5 wire system A 2 51mm diameter cutout hole in the back of the machinery compartment provides access for the electrical supply connections Using flexible cable s for the electrical power supply conductors requires a 2 51mm strain relief fitting not furnished to enable safe access to the terminal block from which oven power is distributed The supply conductors must be of the size and material copper recommended to provide the current required refer to the data plate for the ampere specifications The electric current rating for each conductor supplying a PS536ES Series Oven must comply to local and national codes Typical specifications for each PS536ES Series Oven are 208V or 240V 3 phase 4 wire 60 ampere 17kW this oven requires 60 ampere service A PS536ES Series Double Oven Figure 1 2 installation would require two 60 ampere service connections one for each oven the 17kW power consumption also doubles for such an installation to 34kW The 208V or 240VAC electrically heated oven uses two legs of the supplied power to provide 208V or 240VAC power for the oven control circuitry Electrical Junction
50. er for 200 240V or 50 Amp circuit breakerfor 380 480V ELECTRICAL SPECIFICATIONS DOMESTIC 208V main blower motors and elements 3 Ph 49 4 Amp draw 50 60 Hz 208 240V control circuit 3 pole 4 wire system per oven 3 hot 1 grd Do NOT use conduit for ground or DOMESTIC 240V main blower motors and elements 3 Ph 42 1 Amp draw 50 60 Hz 208 240V control circuit 3 pole 4 wire system per oven 3 hot 1 grd Do NOT use conduit for ground or EXPORT 380V elements 3 Ph 27 0 Amp draw 50 60 Hz 208 240V control circuit and main blower motor 4 pole 5 wire system per oven 3 hot 1 neutral 1 grd Do NOT use conduit for ground or DOMESTIC 480V elements 3 Ph 21 6 Amp draw 50 60 Hz 208 240V controlcircuitand main blower motor 4 pole 5 wire system per oven 3 hot 1 neutral 1 grd Do NOT use conduit for ground 15 Suggested dimensions are shown utility code requirements supersede any factors shown Figure 2 9 Typical PS536ES Series Oven s Installation ELECTRICAL RATING 17 KWihr SUPPLY WIRE Supply wire size must be a minimum of 8 AWG 10 mm and must be in compliance with local codes NOTE The electrical terminal connection marked MP located inside the control compartment is designated for the blue neutral wire tothe oven See the electrical wiring schematics in Section 7 of this manual SUGGESTED If space permits service should be located near the control console end
51. he Canadian Electrical Code CSA C22 2 the Australian Code AG601 or other applicable regulations A fused disconnect switch or a main circuit breaker customer furnished MUST be installed in the electric supply line for each oven it is recommended that this switch circuit breaker have lockout tagout capability The electric supply connection must meet all national and local electrical code requirements Copper is the recommended material for the electrical supply conductors O MODEL NO Numero de modele Tension SERIAL NO Numero de serie L1 L2 L3 AMP Intensit 100 TYP 6 PLCS E Ie PH Phase WIRE Cablage Intensit DO NOT INSTALL CLOSER THAN INCHES TO A NON COMBUSTABLE BACK WALL AND INCHES TO NON COMBUSTABLE SIDE WALLS ONLY FOR INSTALLATION ON COMBUSTABLE FLOORS ADJACENT TO COMBUSTABLE WALLS WITH FOLLOWING MINIMUM CLEARANCES INCHES RIGHT SIDE WALL INCHES TO LEFT WALL INCHES TO BACK WALL KW MOTOR VOLTS PH Moteur Volts Phase PO D UN PANNEAU ARRIERE PO DE PANNEAUX LATERAUX N INSTALLEZ PAS A MONIS DE INCOMBUSTIBLE ET A INCOMBUSTIBLES UNIGUEMENT DESTINE A UN USAGE AUTRE QUE DOMESTIQUE INTENDED FOR OTHER THAN HOUSEHOLD USE 1400 TOASTMASTER DRIVE ELGIN ILLINOIS 60120 U S A 58305 REV B Figure 2 11 Typical Electric Ov
52. he switch must be ON or I forthe burner to come on and permit the oven to warm up The fancirculates the airthroughoutthe oven and must stay on during baking and during the cool down cycle above 200 F 93 C to prevent blower bearing damage To protect the blower motor and bearings a thermostatic override is built into the oven If the tempera ture inside the oven is over 180 F 82 C the main blower will continue to run after the blower switch is turned to the OFF or O position An air pressure switch monitors the air flow from the blower acting as a safety interlock for the burner The Conveyor Speed Control Module burner cannot light ifthe air switch does not sense air flow off the main blower fan C Heat Switch Turning the HEAT switch to ON 1 will initially set up the oven purge circuit After approximately 30 seconds the burner lights After the burner is lit a flame sensor sends a signal to the ignition module to stop the spark The burner will run unless the flame sensor does not detect a flame or the heat switch is turned to the OFF or O position The HEAT switch is in series with the burner blower motor centrifugal switch the high temperature safety switch and the blower fan air pressure switch All three safety switches must be closed for gas to flow and the burner to light D Temperature Controller The temperature controller is a solid state on off type to maintain th
53. inued B Air Fingers The PS536ES Series Ovens are conveyorized ovens that employ vertical jets of hot air streaming from air fingers Figure 1 5 to give uniform intense heating The vertical streams of hotair provide an exceptional heattransfer rate and generally bake faster and at lower temperatures than convection hot air or infrared heating ovens A PS536ES Series Oven can accommodate up to four bottom airfingers andfourtop airfingers Some PS536ES Manifold Air Flow From Plenum High Velocity Columns of Air Manifold Baffle Inner Plate Series ovens used to bake pizza have four bottom fingers and two top fingers For special product baking require ments a number of other styles of fingers and finger arrangements are available from the factory NOTE Some customers have a predetermined finger arrangement If you have any questions pertaining to the finger arrangement please call the factory Manifold Baffle Outer Plate Inner Plate Outer Plate Manifold Figure 1 5 Air Fingers Showing High Velocity Columns of Air Formed During Passage Through the Inner Plate and Outer Plate to Heat the Food Product SECTION 1 DESCRIPTION COMPONENT FUNCTION Figure 1 6 Blower Cooling Fan Conveyor Motor Opti ptional Removable Rear Stop Adjustable Air Fingers Conveyor Motor N Eyebrow Inside Baking Ch Conveyor amber Machinery End Stop Compartment Temperature Controller Pu
54. ires Elements Voltage Voltage Draw 208 240V 208 240V 3 Ph 50 60 Hz 60 Amp 4 Pole 4 Wire 3 hot 1 grd HEATER AMPERAGE AMPERAGE Voltage kW L1 L2 L3 208 17 49 4 49 4 47 2 240 17 42 1 42 1 40 9 380 400V 208 240V 3 Ph 50 60 Hz 60 Amp 4 Pole 5 Wire 3 hot 1neut 1 grd HEATER AMPERAGE Voltage kW L1 L2 L3 N 380 400 17 18 8 27 0 29 8 25 8 28 6 25 8 28 6 1 2 400V 208 240V 3Ph 50 60 Hz 60 Amp 4 Pole 5 Wire 8 hot 1neut 1 grd HEATER AMPERAGE Voltage kW L1 L2 L3 N 480 17 21 6 20 4 20 4 1 2 NOTE Wiring Diagrams are contained in Section 7 of this Manual and are also located inside the oven at the bottom of the Control Panel This Manual Must Be Kept For Future Reference Il PRINCIPLE OF AIR FLOW Thefan style blower draws airinto the oven plenum where itis heated The blower then pushes the hot air through the air fingers into the baking chamber Each air finger contains an inner plate and outer plate that form the hot air into jets distributing itacross a conveyor belt on which the food product rides Airis then pulled back into the blower and the process continues The curving black arrows of Figure 1 4 show this air flow A Heat Transfer and How It Works 1 Heat constantly moves from a warm object to a cold object Heat moves using three different paths Conduc tion Radiation and Convection Conduction This path utilizes surface to surface con tact The pizza dough in contact with the pan is a good
55. ked and provides access to the oven for items that do not require full baking time such as sandwiches cookies small items or cheese melting processes E Cooling Fan See Figure 1 8 The cooling fans are located in the back of the oven These cooling fans draw air through its grille blowing it through the blower motor compartment and the control compartment into the oven top and exhausted out the front louvers F Air Fingers and Blank Plates See Figure 1 9 F1 Air Fingers An Air Finger Assembly is made up of three parts 1 Outer Plate The Outer Plate is the removable covering with tapered holes which direct the air stream onto the product being baked 2 Inner Plate The perforated Inner Plate is vital in forming the unique air jets It must be assembled into the manifold with its holes aligned with the holes of the outer plate 3 Manifold The Manifold is the assembly which slides on tracks into the oven plenum Left Control Box Conveyor Drive Motor Right Control Box Figure 1 7 Machinery Compartment Components SECTION 1 DESCRIPTION Cooling Fan Grille Figure 1 8 Cooling Fan SECTION 1 DESCRIPTION Half Blank Plate Blank Plate F2 Blank Plates 1 Blank Plates The Blank Plates are available to install on the plenum where an air finger is not required Outer Plate Inner Plate Finger Manifold Assembly Baffle Figure 1 9 Blank Plates two sizes and an
56. l controls and compo nents One oven can be cleaned or serviced while the others are operating Figure 1 3 Triple PS536ES Oven SECTION 1 DESCRIPTION PS536ES SERIES OVEN SPECIFICATIONS Table 1 1 Dimensions Overall Height single oven with 17 1 2 446mm legs 43 1 2 1105mm p double oven with standard 17 1 2 446mm legs 63 1600mm _ _ double oven with optional 20 1 2 521mm legs 66 1676mm double oven with optional 25 1 2 648mm legs 71 1808mm triple oven with 6 152mm legs 71 1808mm Overall Depth 46 1168mm Overall Length with standard 60 1524mm conveyor 61 1549mm with optional 56 1422mm conveyor 57 1447mm E _ with optional 76 1930mm conveyor 77 1956mm Baking Chamber Length 36 914mm Conveyor Width Single Belt 2 20 508 Split Belt 2 x 9 1 2 241mm Conveyor Length 56 1422mm or 60 1524mm or 76 1930mm Recommended Minimum Clearances Rear of oven to wall _ E _ 3 76mm Control end of conveyor to wall _ _ 2 1 25 4mm Non control end of oven to wall 1 25 4mm Table 1 2 General specifications per oven cavity Weight 400 Ibs 182kg Rated Heat Input 17 kW hr Maximum Operating Temperature 550 F 288 C Warmup Time 25 minutes SERIES PS536ES ELECTRICAL SPECIFICATIONS Main Blower amp Control Circuit Phase Frequency Amperage Poles W
57. llation Installation Installation Installation Kit P N Kit P N Kit P N Kit P N 44919 44920 44921 44974 45529 CE 45530 CE 45531 CE 45532 CE PS536ES Single Oven 1 1 PS536ES Double Oven 1 2 PS536ES Triple Oven 1 3 10 SECTION 2 INSTALLATION Figure 2 1 Installation Kit j 1 1 INSTALLATION see Figure 2 1 Qty Qty Gty Inc with Inc with Single Double Triple domestic CE _ Oven Oven Oven Part No ovens ovens Description 1 1 1 1 48605 Yes Yes Top panel 2 2 2 2 3A80A8801 Yes Yes Screw pan head 10 x 2 3 1 1 1 42893 Yes Yes Base pad 4a 4 4 42890 Yes Yes 17 1 2 445mm leg extension for single and TII EIE NERO double ovens E O 45360 Yes _ Yes _ _ _ 20 1 2 521mm leg extension optional Bee ee eee IM 45329 0 _____ Yes _ _ _25 1 2 648mm leg extension optional 4d 4 44799 Yes Yes 6 152mm leg extension for triple ovens only 5 2 2 2 22290 0009 Yes Yes Caster with flat plate and brake 6 2 2 2 22290 0010 Yes Yes Caster with flat plate no brake NOTE Domestic and standard export ovens include 2 braking casters item 5 and 2 non braking casters Item 6 CE approved ovens include 4 non braking casters Item 6 SOLELY for the purpose of moving the oven to the installation location Casters are NOT suitable for use as part of CE oven installations Refer to the notice
58. m each end of oven by removing the two wing screws from each end plug 3 Remove the conveyor end stop and the conveyor rear stop Figure 4 3 Removable Air Fingers Inside Baking Chamber Conveyor Motor Machinery Compartment Temperature Controller N Conveyor s Speed Control s Control Console Removable Crumb Pan Figure 4 3 SECTION 4 MAINTENANCE Figure 4 4 30 4 Remove conveyor drive chain cover as shown 5 Removetension from drive chain by lifting and pushing the conveyor slightly into the oven Remove drive chain from conveyor drive sprocket as shown NOTE The split belt conveyor assembly can only be removed from the drive end of the oven 6 Begin sliding conveyor out of the oven as shown Figure 4 7 7 Continue sliding the conveyor completely out of the oven fold itin half andthen place it to the side for cleaning Be careful not to bump drive sprocket while handling conveyor or damage may result to drive shaft M 4 8 CAUTION Be careful not to bump the drive sprocket while handling the conveyor to avoid damaging the drive shaft SECTION 4 MAINTENANCE B Air Fingers Disassembly For Cleaning 1 Asthe airfingers are removed use a felt pen to mark all parts of the fingers This include
59. of all other warranties expressed or implied There are no implied warranties of merchantability or of fitness for a particu lar purpose The foregoing shall be Seller s sole and exclusive obligation and Buyer s sole and exclusive remedy for any action in cluding breach of contract or negligence In no event shall Seller be liable for a sum in excess of the purchase price of the item Seller shall not be liable for any prospective or lost profits of Buyer This warranty is effective on Middleby Marshall equip ment sold on or after February 15 1995 MIDDLEBY MARSHALL INC OVEN LIMITED WARRANTY Non U S A The Seller warrants equipment manufactured by it to be free from defects in material and workmanship for which it is responsible The Seller s obligation under this warranty shall be limited to replacing or repairing at Seller s option without charge F O B Seller s factory any part found to be defective and any labor and material expense incurred by Seller in repairing or replacing such part Such warranty is limited to a period of one year from date of original installation or 15 months from date of shipment from Seller s factory whichever is earlier provided that terms of payment have been fully met All labor shall be performed during regular working hours Overtime premium will be charged to the Buyer This warranty is not valid unless equipment is installed started and demonstrated under the supervision of a factory
60. on the preceding page 7 4 4 4 22450 0028 No No Leg adjustable 6 152mm 8 1 1 1 21392 0004 Yes Yes Eyebolt 3 4 9 A R 220373 Yes Yes Hex bolt 3 8 16 x 1 NOTE CE approved ovens include 32 hex bolts Domestic and standard export ovens include 31 hex bolts and one eyebolt item 8 that acts as an anchor for the restraint cable Item 12 CE ovens are mounted on legs Item 7 and do not use a restraint cable 10 32 32 32 21416 0001 Yes Yes Flat washer 3 8 11 32 32 32 21422 0001 Yes Yes Lockwasher 3 8 12 1 1 1 22450 0228 Yes Yes Restraint cable assembly 13 1 1 1 50236 Yes Yes Owner s Operating and Installation Manual 14 1 1 1 1002040 Yes Yes Authorized Service Agency Listing 15 1 1 46393 Yes Yes Lower shelf 11 SECTION 2 INSTALLATION Figure 2 5 MODEL PS536ES SINGLE OVEN DIMENSIONS G ELECTRICAL JUNCTION BOX RECOMMENDED MINIMUM CLEARANCES Rear of Oven to Wall 6 150mm Non control End of Oven to Wall 0 Control End of Oven to Wall 0 39 11 16 1008 mm 37 15 16 55 i 0 36 3 16 919 60 1 2 1537 44 112 12 SECTION 2 INSTALLATION Figure 2 6 MODEL PS536ES DOUBLE OVEN DIMENSIONS OT mm 11 15 16 303 mm 391 1008 115 8 295 mm 12 316 310 mm 919 mm 36 3 16 60 1 2 1537 mm 1 ELECTRICAL JUNCTION BOX 2 RECOMMENDED
61. onveyor Reassembly Into Oven 1 Lift conveyor and position it in oven as shown NOTE Conveyor assembly may be inserted into either end of oven If itis to be installed from the non drive end ofthe oventhe drive sprocket assembly mustbe removed as shown in conveyor disassembly section NOTE Split belt conveyors can only be inserted from the drive end of the oven YUU Via Figure 4 22 2 Reinstall the conveyor rear stop Reinstall the con veyor end stop Conveyor Rear Stop Conveyor End Stop Figure 4 23 36 G Checking Conveyor Belt Tension WARNING Oven conveyor belt must be cool when adjusting belt Do not adjust belt if HOT 1 With the conveyor assembly in the oven stand at one end of conveyor and check tension by lifting the conveyor belt at the center of the oven chamber opening The belt should not lift higher that 3 to 4 75mm to 102mm 2 Adjust conveyor belt tension screws located on left end of oven for the 3 to 4 75mm to 102mm deflection as shown in Figure 4 26 If there is proper tension proceed to J Attaching Drive Chain If belt is still too loose continue to step 3 below 3 If conveyor belt is still not under proper tension an entire link must be removed Use the following procedure H Conveyor Belt Link Removal to remove a link If conveyor belt is under proper tension p
62. ospective or lost profits of Buyer THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES WHATSO EVER SPECIFICALLY THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE The foregoing shall be Seller s sole and exclusive obligation and Buyer s sole and exclusive remedy for any action whether in breach of contract or negligence In no event shall seller be liable for a sum in excess of the purchase price of the item 2005 Middleby Marshall A Middleby Company The Middleby Marshall logo is a registered trademark of Middleby Marshall A Middleby Company Middleby Marshall Inc 1400 Toastmaster Drive Elgin Illinois 60120 9272 U S A 847 741 3300 FAX 847 741 4406 TABLE OF CONTENTS Page SECTION 1 MODEL IDENTIFICATION 1 SERIES PS536 ELECTRICAL SPECIFICATIONS 2 Il PRINCIPLE OF AIR FLOW 3 A Heat Transfer How It Works 3 Il PRINCIPLE OF AIR FLOW Continued 4 B Air Fingers eene ennt 4 II COMPONENT FUNCTION 5 A Conveyor Motor and Conveyor Belt 6 B Blower Fan eese enne ennt 6 C Electric Heaters
63. our Middleby Marshall Authorized Service Agent may void your warranty NOTICE Using any parts other than genuine Middleby Marshall factory manufactured parts relieves the manufacturer of all warranty and liability NOTICE Middleby Marshall reserves the right to change specifications at any time CFESA Commercial Food Equipment Service Association Middleby is proud to support the Commercial Food Equipment Service Association CFESA We recognize and applaud CFESA s ongoing efforts to improve the quality of technical service in the industry Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin IL 60120 USA 847 741 3300 FAX 847 741 4406 24 Hour Service Hotline 1 800 238 8444 www middleby com 7757 ett _ THE MIDDLEBY CORPORATION
64. re in the Display Unlock Key Press this key together with the Set Point Key to allow the Set Point to be changed Changes can only be made for 60 seconds DM OVER TEMP SECTION 3 OPERATION SET PT setpoint Light Lights when the Middleby sei ponti 5 point is shown Marshall in the display TE rn ACTUAL ACTUAL TEMP Light i 2 lt A Up Arrow and Down Arrow Keys Press these keys to adjust the Set Point up or down If the Set Point will not change refer to Set Point Key and Unlock Key in this section 25 Lights when the Actual Tempera ture is shown in the display Service Key Service use only Set Point Key Press this key together with the Unlock Key to allow the Set Point to be changed Changes can only be made for 60 sec onds SECTION 3 OPERATION IV QUICK REFERENCE TROUBLESHOOTING SYMPTOM OVERTEMP light is lit food product is undercooked PROBLEM The oven temperature ex ceeded 650 F 343 C and the burner was automati cally shut down SOLUTION Follow the procedures under Daily Shutdown Procedures in this section to shut down the oven Contact your Middleby Marshall Authorized Service Agent determine and correct the cause of the condition to prevent damage to the oven Oven will not turn on at all Electrical power may not be reaching the o
65. roceed directly to J Attaching Drive Chain SS III IS SSS Figure 4 24 H Conveyor BeltLink Removal 1 Using long nose pliers an entire link can be removed with the conveyor assembly either in or out of the oven Position master links at end of conveyor as shown in Figure 4 25 Figure 4 25 2 Usinglong nose pliers unhook master links at left end of conveyor as shown in Figure 4 26 Figure 4 26 3 Remove the outside master links on the right and left sides of the conveyor belt as shown in Figure 4 27 Figure 4 27 SECTION 4 MAINTENANCE 4 Unhook the link to be removed 5 Pull up on the belt link section and remove Do not discard the link removed as it may be used for making spare master links NOTE If a section of the conveyor belt is being replaced it should be done now Remove the links that need replacing and use the section of conveyor belt furnished in your installation kit to replace them Figure 4 28 NOTE Before connecting the inside master links notice that these links have a correct position Figure 4 29 The link at the right is in the correct horns up position for inserting into the conveyor belt The horns facing down are in the incorrect position Correct m di Position Incorrect Position Figure 4 29 SECTION 4 MAINTENANCE 6 Reconnect the inside master links Figure 4 30 Figure 4 30 NOT
66. rs correctly after cleaning Refer to Section 4 procedure or call your PROBLEM OVEN BLOWER AND CONVEYOR OPER ATE YET THE OVEN IS NOT HEATING Reset the temperature controller to a new setting above 200 F after turning the BLOWER HEAT switch to off for 30 seconds Start the oven again If the oven still does not heat call your Middleby Marshall Service Agency PROBLEM CONVEYOR WILL NOT HOLD PROPER SPEED OR WILL NOT RUN AT ALL Check whether the conveyor is jammed on something in oven Check for proper tension of conveyor drive chain and conveyor belt Refer to Section 4 for correct procedure Check that the conveyor drive sprocket is tight If conveyor still does not run correctly contact your Middleby Marshall Service Agency PROBLEM OVEN DOES NOT TURN ON WHEN ITS SWITCHES ARE TURNED ON Check that all electric supply switches are set to the ON or I position Then start the oven If oven still will not start contact your Middleby Marshall Service Agency Middleby Marshall Service Agency 45 SECTION 5 TROUBLESHOOTING NOTES 46 SECTION 6 PARTS LIST SECTION 6 PARTS LIST 47 SECTION 6 PARTS LIST A SECTION 6 PARTS LIST 9 991 66 77 r 26 31V1d1V141TANS H31SVO 0100 06 9c 31918 1714 AMS H318SVO 6000 06 Sc 1HVO
67. s the finger manifold inner plate and the outer plate refer to Figure 1 9 Ifa blank or choke plate is used mark that plate also Fingers are marked in the order shown as viewed from the front of the oven The marks for an upper oven should be preceded with U example UB1 UT2 etc Standard Fingers 2 Slide blank plates straight out Figure 4 10 4 Withairfingers out place them an upright position to remove the outer plate 5 Gently step othe lip of the finger and pull the outer plate off Figure 4 9 3 Remove air fingers NOTE Some oven users require a custom finger arrange ment where the quantity of air fingers may vary You can remove top and bottom fingers and blank plates from each or either end It is highly recommended that each finger be marked before removing so it is placed in exactly the same position when reassembled refer to step 1 Remove the air fingers pull the finger at the back side pull straight out Figure 4 11 31 SECTION 4 MAINTENANCE 6 Toremovetheinner plate pull the plate out and then up Figure 4 12 7 The outer finger plate is stainless and may be cleaned by either soaking in a hot strong detergent solution or using a caustic cleaner The conveyor belt can also be cleaned in the same way Figure 4 14 Standard Upper Finger C Cleaning the Window The window
68. should be the conveyor speed shown on the conveyor speed digital control NOTE In Figures 3 4 and 3 5 the oven shown is with the conveyor running right to left WARNING Possibility of injury from rotating parts and electrical shock exist in this oven Never disassemble or clean the oven with the BLOWER HEAT switch or any other part of the oven turned ON or I Turn OFF or O and lockout or tagout all electrical power to the oven before attempting to clean or service this oven SECTION 3 OPERATION Minutes Seconds Figure 3 3 Conveyor Speed Digital Control ZN Figure 3 4 Product at entrance end of baking chamber BEGINNING OF TIMING Figure 3 5 Product at exit end of baking chamber END OF TIMING 21 SECTION 3 OPERATION WARNING OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES Ill STEP BY STEP OPERATION Control Panel On split belt ovens two conveyor speed controls are mounted on the control panel A Startup Procedures Daily Startup 1 Turn the BLOWER HEAT switch Figure 3 6 to the ON or I position This starts the main blower fan and the cooling fan The blower circulates air through the air fingers and must stay on during the cooking or baking process 2 Checktoseeifthe coolingfan see Figure 1 8 is operating whentheBLOWER HEAT switch see Figure 3 6 isturned ON The
69. switch or any other part of the oven turned on WARNING Before performing any maintenance work or cleaning turn main power switch off CAUTION When cleaning do not use any abrasive cleaning materials or water spray wipe clean only Never use a water hose or pressurized steam cleaning equipment when cleaning this oven NOTICE If the oven is to be removed from its installed location for servicing perform the following procedure Switch off the oven and allow it to cool Do NOT service the oven while it is warm Turn off main circuit breakers and disconnect connector from oven Turn the adjustable legs to put weight on the casters Move oven to desired location for servicing When servicing is complete move oven to original location Adjust legs to level oven and take weight off casters Connect electrical and gas connectors to oven Turn on main circuit breakers Follow normal startup instructions 27 SECTION 4 MAINTENANCE SECTION 4 MAINTENANCE I MAINTENANCE DAILY D Crumb Pans Figure 4 2 A Exterior Remove and clean the crumb pan at each end ofthe oven Each crumb pan can be removed by sliding it out as Everyday you should clean the outside of the oven witha shown in Figure 4 2 Reinstall the crumb pans after soft cloth and mild detergent cleaning E Window WARNING The window can be cleaned daily while it is in place Never us
70. ts by sliding to right then lifting the left side Follow cleaning and lubricating procedures out lined in Steps 4 6 Figure 4 43 and remove sprockets Figure 4 46 8 Loosenthe setscrew on each conveyor drive sprocket 11 Reassemble conveyor drive shafts into frame mak ing sure nylon spacer is in place Y Figure 4 44 Im tfi Us 22 2 Figure 4 47 42 12 Slide shaft assembly to right side holding assembly in place Slide split locking collar to the left side and tighten 13 Slide rear conveyor drive sprocket onto shaft Tighten the set screw of this drive sprocket until it extends into the hole of the hollow shaft It should NOT touch the inner solid shaft Check to see that only the rear shaft moves when the sprocketis turned If both shafts move you have tightened the set screw too tight Loosen the set screw until only the rear shaft moves when the sprocket is turning 14 Insert adaptor bushing into remaining drive sprocket then place onto shaft Make sure nylon spacer is in place Tighten set screw making sure screw goes through slotin adaptor bushing and locks onto shaft 15 Thread conveyor belts back onto frame making sure the links will be traveling in the proper direction 16 Follow conveyor reassembly instructions in Monthly Maintenance Paragraph F NOTE Itis recommended thatthe 6 Month Maintenance schedule be performed by a Middleby
71. ven or the controls may be set incor rectly Check that the circuit breaker fused disconnect is turned on Check that the BLOWER D Switch is in the ON 1 position The burner cannot engage until the blowers are in operation Oven shuts down shortly after it is turned on The gas burner did not light within 90 seconds of turn ingthe HEAT 382 Switch to the ON I position This automatically en gages a safety lockout mode Turn the HEAT 07 BLOWER 6 and CONVEYOR switches to the OFF O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Startup procedure appears in display oven is not heating The oven did not reach 200 F 93 C within 15 min utes of startup andthe oven has stopped heating Turn the HEAT 8 BLOWER 6 CONVEYOR switches to the OFF O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Startup procedure Oven will not heat Controls may be set incor rectly Check that the Set Point is correctly set Check that both the BLOWER Gb and HEAT 382 Switches in the ON 1 position 37 If the oven still will not heat turn the HEAT 522 BLOWER 6 and CONVEYOR a switches to the OFF position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Startup procedure Check

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