Manuals / Middleby Marshall / Kitchen Appliance / Oven

Middleby Marshall P/N 60250 Description, I. Oven Uses, II. OVEN COMPONENTS - see Figure

Models: P/N 60250

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SECTION 1 – DESCRIPTION

SECTION 1 – DESCRIPTION

I. OVEN USES

Figure 1-1. Oven Components

PS740 Series Ovens can be used to bake and/or cook a wide variety of food products, such as pizza, pizza –type products, cookies, sandwiches and others.

II. OVEN COMPONENTS – see Figure 1-1.

A.Conveyor Drive Motor: Moves the conveyor.

B.Crumb Pans: Catch crumbs and other materials that drop through the conveyor belt. One crumb pan is located at each end of the conveyor.

C.Conveyor: Moves the food product through the oven.

D.End Plugs: Allow access to the oven’s interior.

E.Eyebrows: Can be adjusted to various heights to prevent heat loss into the environment.

F.Window: Allows the user to access food products inside the baking chamber.

G.Machinery Compartment Access Panel: Allows access to the oven’s interior and control components. No user ser- viceable parts are located in the machinery compartment.

H.Serial Plate: Provides specifications for the oven that affect installation and operation. Refer to Section 2, Installation for details.

I.Control Panel: Location of the operating controls for the oven. Refer to Section 3, Operation, for details.

J.Photo Cell: Turns oven On when beam is interrupted.

Not Shown:

K.Gas Burner (gas ovens): Heat air, which is then projected to the air fingers by the blowers.

L.Blowers: Project hot air from the burner or heating element to the air fingers.

M.Air Fingers: Project streams of hot air onto the food product.

1	P/N 60250 September 28, 2012

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Middleby Marshall P/N 60250 Description, I. Oven Uses, II. OVEN COMPONENTS - see Figure, 1. Oven Components, Not Shown

Contents

PS740 Series Gas Ovens OWNERS OPERATING AND INSTALLATION MANUALfor domestic and standard export ovens ModelRETAIN THIS MANUAL FOR FUTURE REFERENCE MIDDLEBY MARSHALL MIDDLEBY MARSHALL INC. OVEN LIMITED WARRANTY Non U.S.ANo Quibble Limited Warranty U.S.A. OnlySECTION 5 - ELECTRICAL WIRING DIAGRAM TABLE OF CONTENTSP/N 60250 September SECTION 3 - OPERATIONI. OVEN USES SECTION 1 - DESCRIPTIONII. OVEN COMPONENTS - see Figure Figure 1-1. Oven ComponentsGAS ORIFICE AND PRESSURE SPECIFICATIONS PER OVEN CAVITY - CE OVENS I. OVEN SPECIFICATIONSWiring Diagrams are contained in Section 5 of this Manual and are also located inside the oven at thePerform a gas leak test SECTION 2 - INSTALLATIONTest for correct air supply, particularly to the burner blower Test for proper combustion and gas supplyPARTS LIST FOR SERIES PS740 GAS OVEN INSTALLATION KIT P/N PS740 24″ OVEN INSTALLATION REQUIRED KITS AND EQUIPMENTFigure 2-1A. PS740-Series Gas Oven Installation Parts InstallationPARTS LIST FOR SERIES PS740 GAS OVEN INSTALLATION KIT P/N PS740 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENTFigure 2-1B. PS740-Series Gas Oven Installation Parts InstallationOption Base with Legs and Top Figure 2-2A. Model PS740 24″ Single OvenP/N 60250 September ITEM NOOption Base with Legs and Top Figure 2-2B. Model PS740 32″ Single OvenP/N 60250 September 28 ITEM NOOption Base with Legs and Top Figure 2-3A. Model PS740 24″ Double OvenP/N 60250 September ITEM NOP/N 60250 September Figure 2-3B. Model PS740 32 Double Oven Option Base with Legs and TopITEM NO DESCRIPTIONOption Base with Outriggers and Top Figure 2-4A. Model PS740 24″ Triple OvenP/N 60250 September ITEM NOOption Base with Outriggers and Top Figure 2-4B. Model PS740 32″ Triple OvenP/N 60250 September ITEM NORESTRICT SERVICE ACCESS LEAD TO INCREASED SERVICE equipment directly to the ovenMOUNTING SUCH EQUIPMENT ON THE OVEN MAY VOID AGENCY CERTIFICATIONS EXPENSES FOR THE OWNERFigure 2-7. Base pad Installation IV. ASSEMBLYFigure 2-6. Leg extension and casters installation Figure 2-8. Top panel installationFigure 2-11. Installing the Restraint Cable Figure 2-10. Top panel installationC. Restraint Cable Installation Figure 2-9. StackingFigure 2-13. Conveyor placement Figure 2-12. Conveyor installationD. Conveyor Installation Figure 2-14. Conveyor Belt tensionSWITCHING PHOTO DETECTOR RESETTING DIRECTION JUMPERE. Final Assembly CAUTION Disconnect Power Before Switching Photo eyeCAUTION DURING PRESSURE TESTING NOTE ONE OF THE FOLLOWING CAUTION The terms of the oven’s warranty require allConnection VII. GAS SUPPLYFigure 2-19. Gas Burner Assembly Figure 2-18. Flexible Gas Hose InstallationCAUTION The terms of the oven’s warranty require all E. Adjusting the Maximum Pressure SettingAdjusting the Minimum Pressure Setting Figure 2-20. Burner AssemblyMaintenance Figure 2-21. Gas ValveE. Energy Level Indicators B. Conveyor Time SettingSECTION 3 - OPERATION I. LOCATION AND DESCRIPTION OF CONTROLSB. Daily Shutdown Procedure A. Daily Startup ProcedureB. Oven Temperature/Set Point/Indicator Screen II. NORMAL OPERATION - STEP-BY-STEPSYMPTOM III. QUICK REFERENCE TROUBLESHOOTINGPROBLEM SOLUTIONI. MAINTENANCE - DAILY SECTION 4 - MAINTENANCEFigure 4-1. Cooling Vents and Grills P/N 60250 SeptemberTop Row II. MAINTENANCE - MONTHLYBottom Row Figure 4-2. Removing Air Fingers and PlatesFigure 4-5. Drive shaft configurations III. MAINTENANCE - EVERY 3 MONTHSD. Split Belt Disassembly and Cleaning Figure 4-4. Disassembling the idler shaftFigure 4-7. Rear panel access IV. MAINTENANCE - EVERY 6 MONTHSFigure 4-6. Disassembling the drive shaft P/N 60250 SeptemberP/N 60250 September Figure 4-8. Key Spare PartsV. KEY SPARE PARTS - Available separately. See Figure ITEM QTYP/N 60250 September SECTION 5 - WIRING DIAGRAMMiddleby-Marshall Model Number G208-240 Volt 50/60 Hz, 1 Phase P/N 60250 September P/N 60250 September 28 P/N 60250 September installing or servicing this equipment