Middleby Marshall PS536-Series installation manual III. Component Function

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

C. 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

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.

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.

Figure 1-7. Machinery Compartment

Components

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Contents Owners operating Page Middleby Marshall IiiTable of Contents Section Description Model IdentificationDimensions PS536ES Series Oven SpecificationsSeries PS536ES Electrical Specifications General specifications per oven cavityII. Principle of AIR Flow Heat Transfer and How It WorksII. Principle of AIR Flow Air FingersPS536ES-Series Oven Components Locations III. Component Function FigureIII. Component Function Cooling Fan Blank Plates two sizes and an Air Finger F2. Blank PlatesSection Installation UnloadingPS536ES Oven Installation Required Kits and Equipment InstallationInstallation KIT see Figure Model PS536ES Single Oven Dimensions Model PS536ES Double Oven Dimensions Restraint Cable Installation Model PS536ES Triple Oven DimensionsInstallation II. Ventilation Guidelines IV. Electric Supply for Electrically Heated Ovens 11. Typical Electric Oven Data PlateVI. Conveyor Rear Stop and END Stop Installation 13. Installing Rear and End StopsSection Operation Control FunctionsII. Component Information and Location Figures 3-1 Conveyor Measuring Conveyor SpeedSee Figures 3-4 Shutdown Procedure Startup Procedures Daily StartupPower Failure III. STEP-BY-STEP OperationLocation and Description of Controls II. Normal Operation STEP-BY-STEP III. Quick Reference Digital Temperature Controller IV. Quick Reference Troubleshooting SymptomSection Maintenance Cooling Fan Maintenance DailyExterior Crumb Pans FigureII. Maintenance Monthly Section Maintenance Air Fingers Disassembly For Cleaning Standard FingersCleaning the Window Reassembly of Air FingersBack in the same way they came out Section Maintenance Reinstall End Plugs Conveyor Reassembly Into Oven Checking Conveyor Belt TensionConveyor Belt Link Removal Attaching Drive Chain Replacing Conveyor BeltLower End Plug III. Maintenance Every 3 Months Cleaning the Blower/Fan MotorElectrical Terminals VentilationSplit-belt Conveyor Shaft Cleaning Section Maintenance IV. Maintenance Every 6 Months Important NoticesKEY Spare Parts KIT Section Troubleshooting Section Troubleshooting Parts List Parts List Oven PANELS, Window and Legs QTY DescriptionParts List English Parts List Blower and Shroud Parts List Conveyor Item QTY Conveyor DescriptionParts List Split Belt Conveyor Element Machinery Compartment Section Parts List Electrical Electrical Section Schematics Electrical Schematics Section Hour Service Hotline
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