Middleby Marshall PS540G Blower Fan Shaft Bearing Lubrication, Split-belt Conveyor Shaft Cleaning

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SECTION 4

 

MAINTENANCE

E. Blower Fan Shaft Bearing Lubrication

3. Remove the conveyor adjustment bolts to allow the

 

idler brackets to swing free.

CAUTION

Over-greasing damages the bearing seals and accelerates grease loss, which shortens bearing life. Wipe off any excess grease on and around the bearing. Reinstall the rear shroud to allow the oven to operate

Grease the two (2) main blower fan shaft bearings (Figure 4-43), using a special grease (MM P/N 17110-0015 lithium- base, high-temperature grease). ONLY ONE STROKE of a grease gun is required for each bearing.

Figure 4-43.

Upon completing the fan belt check (or replacement) and the bearing lubrication, reinstall the rear shroud, fastening it with six screws of the rear shroud.

F. Split-belt Conveyor Shaft Cleaning

It is very important that the split-belt conveyor drive and idler shafts are removed from the conveyor frame for cleaning and lubrication.

Figure 4-44.

4.Drop the idler shaft assembly clear of the frame through the front frame slot.

Figure 4-45.

5.Pull the 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.

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 “A”. After the conveyor is removed, lay it on a flat surface.

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.

Figure 4-46.

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Contents Owners operating Page Iii Middleby MarshallTable of Contents Model Identification Section DescriptionSeries PS540 Electrical Specifications PS540 Series Oven SpecificationsThis Manual Must Be Kept For Future Reference Heat Transfer and How It Works II. Principle of AIR FlowAir Fingers II. Principle of AIR FlowIII. Component Function Figure PS540-Series Oven Components LocationsConveyor Motor and Conveyor Belt III. Component FunctionBlower Fan Gas BurnerCooling Fan See Figure Cooling FanF2. Blank Plates Air Fingers and Blank Plates See Figure F1. Air FingersUnloading Section InstallationParts List for Series PS540 GAS Oven Installation KIT PS540 Oven Installation Required Kits and EquipmentModel PS540 Single Oven Option Base with Legs and Top Model PS540 Double Oven Option Base with Legs and Top Model PS540 Triple Oven Option Base with Outriggers and Top Model PS540 Single Oven Dimensions Model PS540 Double Oven Dimensions Model Triple Oven Dimensions Restraint Cable InstallationUser Supplied Items Figure Hood for Adequate AIR Supply and VentilationVentilation Hood II. Ventilation Guidelines Ventilation Capture Test11. Typical Gas Oven Data Plate IV. Electric Supply for GAS- Heated Ovens12. Junction Connection Box GAS Supply for GAS Heated Ovens13. Flexible Gas Hose Installation Adjusting the Minimum Pressure Setting VI. Conveyor Rear Stop and END Stop InstallationControl Functions Section OperationBlower Switch Door Safety SwitchHeat Switch Temperature ControllerConveyor Measuring Conveyor SpeedSee Figures 3-4 Power Failure Startup Procedures Initial StartupShutdown Procedure III. STEP-BY-STEP OperationControl Panel II. Normal Operation STEP-BY-STEP Daily Startup ProcedureSP Lock Symptom IV. Quick Reference TroubleshootingSection Maintenance Cooling Fan ExteriorCrumb Pans Figure WindowRemoving Conveyor From Oven For Cleaning II. Maintenance MonthlySection Maintenance T1 T2 T3 T4 B1 B2 B3 B4 Air Fingers Disassembly For CleaningReassembly of Air Fingers Cleaning the WindowExtended Lip Tab on Outer Plate Flange Finger Manifold Section Maintenance Reinstall End Plugs Checking Conveyor Belt Tension Conveyor Reassembly Into OvenConveyor Belt Link Removal Attaching Drive Chain Replacing Conveyor BeltCleaning the Blower/Fan Motor III. Maintenance Every 3 MonthsVentilation Electrical TerminalsChecking the Blower/Fan Belt Blower Fan Shaft Bearing Lubrication Split-belt Conveyor Shaft CleaningSection Maintenance IV. Maintenance Every 6 Months KEY Spare Parts KIT Section Troubleshooting Section Troubleshooting Parts List English Oven PANELS, Window and Legs Section Parts List Control Panel English Blower and Shroud English Conveyor English Split Belt Conveyor English GAS Burner and Piping Assembly English Machinery Compartment Section Parts List Section Electrical Schematics Section Electrical Schematics Section Electrical Schematics Section Electrical Schematics Page Hour Service Hotline

PS540G specifications

The Middleby Marshall PS540G is a cutting-edge conveyor oven designed to meet the diverse cooking needs of commercial kitchens and food service operations. Known for its efficiency and reliability, the PS540G combines advanced technology with innovative design to deliver consistent cooking results while optimizing energy use.

One of the standout features of the PS540G is its high-efficiency impingement cooking system. This technology utilizes powerful jets of hot air that quickly and evenly circulate around the food, ensuring thorough cooking while significantly reducing cooking times. This results in faster service and improved throughput, making it an excellent choice for busy restaurants, cafes, and catering operations.

The oven is equipped with a unique dual-fuel option, allowing operators to choose between natural gas or propane. This flexibility helps businesses adapt to their specific requirements and preferences, providing both cost and energy-saving benefits. Additionally, the PS540G is designed with a fully insulated structure, minimizing heat loss and further enhancing energy efficiency.

Another key characteristic of the Middleby Marshall PS540G is its user-friendly control interface. The digital controls offer precise temperature settings and adjustable conveyor speeds, allowing chefs to customize the cooking process for various food items. This versatility ensures optimal results, whether baking pizzas, roasting vegetables, or toasting sandwiches.

The spacious cooking chamber of the PS540G is designed with a wide conveyor belt that accommodates large batches of food, making it particularly suitable for high-volume establishments. The oven's compact footprint allows it to fit into tight kitchen spaces without sacrificing cooking capacity.

Safety is also a priority in the design of the PS540G. The oven features automatic shut-off mechanisms and cool-to-the-touch exterior surfaces, allowing for safer operations. Additionally, the durable construction with stainless steel components ensures longevity and ease of maintenance.

In conclusion, the Middleby Marshall PS540G is a state-of-the-art conveyor oven that offers outstanding performance for commercial kitchens. With its advanced impingement cooking technology, flexible dual-fuel options, user-friendly controls, and robust safety features, the PS540G stands out as an essential tool for any food service operation looking to enhance efficiency and food quality.
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