Middleby Marshall PS740E installation manual Problem Oven does not Heat

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SECTION 5

TROUBLESHOOTING

PROBLEM:

PRODUCTS ARE OVERCOOKED

OR UNDERCOOKED

PROBLEM:

OVEN BLOWER AND CONVEYOR OPERATE,

YET THE OVEN IS NOT HEATING

Check for correct setting of conveyor speed control.

Set the conveyor speed control at correct setting.

Check for correct

setting on tempera-

ture controller.

Turn temperature control to correct setting.

Reset the temperature controller to a new setting (above 200°F), after turning the BLOWER switch to off for 30 seconds.

Start the oven again. If the oven still does not

heat, call your Middleby Marshall Service Agency.

Verify the food

preparation process.

If products still cook incorrectly,

call your Middleby Marshall

Service Agency.

PROBLEM:

OVEN DOES NOT HEAT

Check to see if both BLOWER switch and HEAT switch are in the “ON” or “I” position.

If oven 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:

BLOWER MOTOR IS RUNNING, YET LITTLE OR NO AIR BLOWS FROM AIR FINGERS

Air fingers reassembled incorrectly,

after cleaning.

Assemble air fingers correctly, after cleaning. Refer to Section 4 procedure, or call 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.

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Contents Owners Operating and Installation Manual Retain this Manual for Future Reference Middleby Marshall Table of Contents Conveyor Drive Motor Moves the conveyor Machinery Compartment Access Panel Allows accessNot Shown Oven Specifications Installation Kit Parts List for Series PS740 Electric Oven Installation KIT″ Legs Casters& Top Casters & Top Kit PS740 Oven Installation Required Kits and Equipment Item no QTY Description Hardware BA G ″-16 × 1 HEX SCREW, SST Item no QTY Description Quad Outrigger Weldment 7A2S15 SCR, MS STR Trshd 10-32X3/4 ″ Other ventilation concerns III. Ventilation SystemRequirements RecommendationsTop Panel and Base Pad Assembly IV. AssemblyStacking Restraint Cable InstallationDo not Overtighten the Conveyor Belt Conveyor InstallationConveyor Belt Reversal Resetting Direction JumperSwitching Photo Detector Final Assembly18. Utility Connection Locations for IV. Electric Supply for Electrically Heated OvensElectric Supply to be Provided by Customer Do not USE Conduit for Ground ConnectionLocation and Description of Controls II. Normal Operation STEP-BY-STEP Screen Alerts III. Quick Reference TroubleshootingMaintenance Daily MaintenanceTop Row Bottom Row II. Maintenance MonthlySplit Belt Disassembly and Cleaning III. Maintenance Every 3 MonthsBlower Belt IV. Maintenance Every 6 MonthsItem QTY Description KEY Spare Parts Available separately. See FigureProblem Problem Oven does not HeatWiring Diagram 60741 Rev. F Page

PS740E specifications

The Middleby Marshall PS740E is a cutting-edge conveyor oven designed to provide exceptional baking performance, particularly in high-volume food service operations. This innovative piece of equipment is particularly favored by pizza restaurants, quick-service eateries, and other establishments that require reliable and consistent cooking results.

One of the standout features of the PS740E is its advanced cooking technology. Equipped with the patented "Jetlube" system, the oven utilizes high-velocity forced air that enhances heat transfer and ensures even cooking across the product. This technology not only cooks food quickly but also preserves the flavor and texture of items, making it a preferred choice for commercial kitchens focused on quality.

The PS740E is built with an energy-efficient design that promotes sustainability while reducing operational costs. It features an electronic control system that allows operators to easily manage cooking times and temperatures, thereby enhancing productivity without sacrificing food quality. With adjustable conveyor speeds and temperature controls that can reach up to 600°F, the oven provides versatility in cooking a variety of menu items, including pizzas, sandwiches, and baked goods.

Another notable characteristic of the Middleby Marshall PS740E is its durable construction. Designed for the rigors of commercial use, it features stainless steel exteriors, which not only present a professional appearance but also ensure easy cleaning and maintenance. The oven's high-quality components are engineered to withstand the demands of daily use, further reinforcing its reputation as a reliable workhorse in any kitchen.

The PS740E is also designed with user convenience in mind. It is compact yet capable of accommodating large volumes of food, thanks to its efficient conveyor system. This allows for streamlined workflow in busy environments, minimizing wait times and enhancing customer satisfaction.

In conclusion, the Middleby Marshall PS740E stands out in the market for its innovative cooking technologies, energy efficiency, durable design, and user-friendly features. It represents a smart investment for food service operators looking to enhance their menu offerings while maintaining efficiency in food preparation and cooking processes.
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