Manuals / Middleby Marshall / Kitchen Appliance / Oven

Middleby Marshall PS540G Section Description, Iii. Component Function, Left Control Box

Models: PS540G

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III. COMPONENT FUNCTION

SECTION 1

DESCRIPTION

III. 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 switch must be set to “ON” or “I” for oven warmup and baking.

C. Gas Burner

Turning the HEAT switch to “1” activates the oven purge circuit. After approximately 30 seconds, the solid-state ignition control lights a pilot burner by an electric spark. This system permits the main gas valve to open only after the lighting of the pilot burner is detected by the flame sensor.

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

A window on the front of the oven permits viewing the items being baked 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.

Left Control Box

Right Control Box

Figure 1-7. Machinery Compartment Components

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Middleby Marshall PS540G Section Description, Iii. Component Function, Left Control Box, Right Control Box

Contents

manual installationowners operating MiddlebyFOR YOUR SAFETY, DO NOT STORE OR USE U.S.A. ONLY NO QUIBBLE LIMITED WARRANTYInstallation Date Model NoTABLE OF CONTENTS TABLE OF CONTENTSContinued I. MODEL IDENTIFICATION SECTION DESCRIPTIONSECTION DESCRIPTION Figure 1-1. Single PS540 OvenWiring Diagrams are contained in Section 7 of this Manual PS540 SERIES OVEN SPECIFICATIONSSERIES PS540 ELECTRICAL SPECIFICATIONS 3 WireSECTION DESCRIPTION II. PRINCIPLE OF AIR FLOWFigure 1-4. PS540-Series Oven Air Flow II. PRINCIPLE OF AIR FLOW Continued SECTION DESCRIPTIONthe Inner Plate and Outer Plate to Heat the Food Product Figure 1-6. PS540-Series Oven Components Locations SECTION DESCRIPTIONIII. COMPONENT FUNCTION Figure Left Control Box SECTION DESCRIPTIONIII. COMPONENT FUNCTION Right Control BoxFigure 1-8. Cooling Fan SECTION DESCRIPTIONE. Cooling Fan - See Figure F. Air Fingers and Blank Plates - See Figure F1. Air Fingers SECTION DESCRIPTIONFigure 1-9. Blank Plates two sizes and an Air Finger F2. Blank PlatesSECTION INSTALLATION SECTION INSTALLATIONI. UNLOADING PARTS LIST FOR SERIES PS540 GAS OVEN SECTION INSTALLATIONPS540 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT INSTALLATION KITSECTION INSTALLATION Figure 2-2. Model PS540 Single Oven Option Base with Legs and TopSECTION INSTALLATION Figure 2-3. Model PS540 Double Oven Option Base with Legs and TopFigure 2-4. Model PS540 Triple Oven SECTION INSTALLATIONOption Base with Outriggers and Top GAS INLET SECTION INSTALLATIONFigure 2-5. MODEL PS540 SINGLE OVEN DIMENSIONS ELECTRICAL JUNCTION BOXFigure 2-6. MODEL PS540 DOUBLE OVEN DIMENSIONS SECTION INSTALLATION1 GAS INLET 2 ELECTRICAL JUNCTION BOX Figure 2-7. MODEL TRIPLE OVEN DIMENSIONS SECTION INSTALLATIONRESTRAINT CABLE INSTALLATION Figure 2-8. Restraint Cable Assembly InstallationFigure 2-9. Typical PS540-Series Ovens Installation SECTION INSTALLATIONUTILITY ROUGH-IN DIMENSIONS AND POSITIONING FOR PS540-SERIES OVENS DO NOT USE CONDUIT OR GAS LINE FOR GROUND CONNECTIONVENTILATION CAPTURE TEST SECTION INSTALLATIONII. VENTILATION GUIDELINES VENTILATION HOODWHITE WIRES MUST BE NO HIGHER THAN 130 VAC SECTION INSTALLATIONDO NOT CONNECT BLACK WIRE TO HIGH LEG VOLTAGE OF THE BLACK AND III. ELECTRICAL CONNECTION INFORMATION FOR PS540-SERIES OVENSV. GAS SUPPLY FOR GAS HEATED OVENS SECTION INSTALLATIONFigure 2-12. Junction Connection Box Figure 2-13. Flexible Gas Hose Installation SECTION INSTALLATIONFigure 2-14. Gas Burner Assembly Figure 2-15. Burner Assembly SECTION INSTALLATIONVI. CONVEYOR REAR STOP AND END STOP INSTALLATION Figure 2-17. Installing Rear and End StopsI. CONTROL FUNCTIONS SECTION OPERATIONSECTION OPERATION Figure 3-1. PS540-Series Oven Control FunctionsC. Heat Switch A. Door Safety SwitchB. Blower Switch D. Temperature ControllerFigure 3-3. Conveyor Speed Digital Control MEASURING CONVEYOR SPEEDSECTION OPERATION Figure 3-4. Product at entrance end of bakingB. Shutdown Procedure A. Startup Procedures Initial StartupPower Failure SECTION OPERATIONSECTION OPERATION Figure 3-6. Control PanelII. NORMAL OPERATION - STEP-BY-STEP B. DAILYSHUTDOWNPROCEDURESECTION OPERATION wait + forSECTION 3 OPERATION PROBLEM IV. QUICK REFERENCE TROUBLESHOOTINGSYMPTOM SOLUTIONSECTION MAINTENANCE SECTION MAINTENANCEFigure 4-2. Conveyor Belt and Crumb Pan Cleaning SECTION MAINTENANCEI. MAINTENANCE - DAILY A. ExteriorPRECAUTIONS II. MAINTENANCE - MONTHLYSECTION MAINTENANCE A. Removing Conveyor From Oven For CleaningSECTION MAINTENANCE 4. Remove conveyor drive chain cover as shownT1 T2 T3 T4 B1 B2 B3 B4 SECTION MAINTENANCEB. Air Fingers Disassembly For Cleaning Standard FingersD. Reassembly of Air Fingers SECTION MAINTENANCEC. Cleaning the Window Figure 4-13. Standard Lower Finger Figure 4-14. Standard Upper FingerSECTION MAINTENANCE clear so you won’t pinch themSECTION MAINTENANCE SECTION MAINTENANCE E. Reinstall End PlugsF. Conveyor Reassembly Into Oven SECTION MAINTENANCEG. Checking Conveyor Belt Tension SECTION MAINTENANCE H. Conveyor Belt Link RemovalI. Replacing Conveyor Belt SECTION MAINTENANCEJ. Attaching Drive Chain III. MAINTENANCE - EVERY 3 MONTHS SECTION MAINTENANCEA. Cleaning the Blower/Fan Motor C. Ventilation SECTION MAINTENANCEB. Electrical Terminals D. Checking the Blower/Fan BeltSECTION MAINTENANCEF. Split-belt Conveyor Shaft Cleaning E. Blower Fan Shaft Bearing LubricationSECTION MAINTENANCE 6. Make sure bronze washer is in between the two halvesSECTION MAINTENANCE IV. MAINTENANCE - EVERY 6 MONTHSIMPORTANT NOTICES PS540-SERIES GAS OVEN KEY SPARE PARTS Figure SECTION MAINTENANCEKEY SPARE PARTS KIT Figure 4-56. Key Spare PartsPROBLEM PRODUCTS ARE OVERCOOKED OR UNDERCOOKED SECTION TROUBLESHOOTINGSECTION TROUBLESHOOTING PROBLEMSECTION TROUBLESHOOTING ENGLISH SECTION 6 - PARTS LISTSECTION PARTS LIST SECTION 6 PARTS LIST ENGLISHOVEN PANELS, WINDOW AND LEGS SECTION 6 PARTS LISTENGLISH DESCRIPTIONSECTION PARTS LIST ENGLISHCONTROL PANEL SECTION PARTS LISTENGLISH DESCRIPTIONSECTION 6 PARTS LIST ENGLISHBLOWER AND SHROUD ENGLISHDESCRIPTION SECTION 6 PARTS LIST ENGLISHDESCRIPTION ENGLISHCONVEYOR DESCRIPTIONSECTION 6 PARTS LIST ENGLISHSPLIT BELT CONVEYOR SECTION 6 PARTS LISTENGLISH DESCRIPTIONSECTION 6 PARTS LIST ENGLISHENGLISH GAS BURNER AND PIPING ASSEMBLYDESCRIPTION SECTION 6 PARTS LIST ENGLISHMACHINERY COMPARTMENT ENGLISHDESCRIPTION SECTION PARTS LIST ENGLISHSECTION ELECTRICAL SCHEMATICS SECTION ELECTRICAL SCHEMATICSWiring Diagram, G208-240 50/60, 1PH 3W PS540 SECTION ELECTRICAL SCHEMATICS Wiring Diagram, G208-240 50/60, 1PH 3W PS540SECTION ELECTRICAL SCHEMATICS SECTION ELECTRICAL SCHEMATICS Page 24-Hour Service Hotline