Middleby Marshall PS840 Series installation manual II. Normal Operation STEP-BY-STEP

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II. NORMAL OPERATION - STEP-BY-STEP-

A. Daily Startup Procedure

1.Check that the circuit breaker/fused disconnect is in the On position. Check that the window is closed. The touch panel display should be lit.

2.Adjust the conveyor to the desired bake time.

3.Press the temperature button to display right and left hand oven settings. Set temperatures as desired.

4.Press the ON button to activate the oven. The conveyor will not run, until the oven temperature has reached the set points.

B. Daily Shutdown Procedure

1.Make certain there are no products left on the conveyor in the oven.

2.Press the ON square to turn the oven off.

3.Open the window to allow the oven to cool faster.

4.After the oven has cooled and the blowers have turned off, the circuit breaker/fused disconnect may be turned off.

Quick Reference – Touch Screen Controller

A. Main Screen

1.On/Off button - Used to turn oven On and Off.

2.Conveyor speed - Pressing on either the minutes or seconds allows a new value to be input for the conveyor speed. Split belt ovens have two inputs (front and rear belts).

3.Oven temperature - Pressing on the set temperature shifts the user to the oven temperature set point/indicator screen.

4.Energy level indicators - Indicators to either side of the screen indicate the energy input to that side of the oven.

5.Message bar - Indicates various messages pertaining to current oven conditions.

B. Oven Temperature/Set Point/Indicator Screen

1.Right actual temperature - Indicates current average tem- perature of the right side of the oven.

2.Left actual temperature - Indicates current average tem- perature of the left side of the oven.

NOTE: Right to Left temperature settings should not exceed a differential of 20 °F.

3.Right Set point temperature - Pressing on this value allows the user to adjust the set point for the right side of the oven.

4.Left Set point temperature - Pressing on this value allows the user to adjust the set point for the left side of the oven.

5.Exit - Returns to the main screen.

C. Energy Modes

Energy Mode One - This mode is automatic, and starts (bake time +1 minute) after the last product has entered the oven. In this mode, the main oven blowers will lower to 1500 RPM, while the oven maintains temperature and belt speed.

Energy Mode Two - The oven lowers its set point by 100° F, and stops the belt. Anytime that the oven is more than 10 degrees over its set point, the burners will completely shut off, allowing the oven to cool and the burners are on minimum flow. The main blowers will continue to run at 1500 RPM in this mode. Placing any article on the input belt will cause normal operation of the oven to resume, and bring the set point back to its original level. The belt will resume operation once both sides of the oven are within 5° F of the set point.

Energy Mode Three - The oven will turn off completely and shut off the circulation blowers once the oven temperature has dropped below 200° F. Placing any article on the input belt will cause normal operation of the oven to resume, and bring the set point back to its original level. The belt will resume operation once both sides of the over are within 5° F of the set point.

Energy Mode Four - This is a complete oven shut down. Placing anything on the belt will NOT return the oven to Operation. The ON button on the main screen has to be pressed to restart the oven.

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Contents Owners Operating and Installation Manual Retain this Manual for Future Reference Middleby Marshall Table of Contents Oven Uses DescriptionTriple Ove Oven SpecificationsInstallation Parts List for Series PS840 GAS Oven Installation KIT PS840 24″ Oven Installation Required Kits and EquipmentKit Kit 15 ″ Legs Casters& Top Casters & Top PS840 32″ Oven Installation Required Kits and EquipmentItem no QTY Description Hard Ware BA G ″-16 × 1 HEX SCREW, SST Item no QTY Description Quad Outrigger Weldment Item no QTY Description Requirements III. Ventilation SystemRecommendations Other ventilation concernsTop Panel and Base Pad Assembly IV. AssemblyStacking Restraint Cable InstallationDo not Overtighten the Conveyor Belt Conveyor InstallationSwitching Photo Detector Resetting Direction JumperConveyor Belt Reversal Reversing the Conveyor BeltVII. GAS Supply ConnectionConnection Adjusting the Maximum Pressure SettingGas Conversion PS840 Propane ConversionMaintenance Adjusting the Minimum Pressure SettingCheckout Location 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 MonthsKEY Spare Parts Available separately. See Figure KEY Spare Parts PS840 GASWiring Diagram Page Page

PS840 Series specifications

The Middleby Marshall PS840 Series is a high-performance conveyor oven designed to deliver outstanding cooking results with efficiency and speed. This series is renowned in the foodservice industry for its advanced technology and user-friendly design, making it an ideal choice for restaurants, pizza shops, and other commercial kitchens that require consistent high-quality food production.

One of the standout features of the PS840 Series is its innovative design that utilizes a patented Cookstar Technology. This technology promotes even cooking by ensuring that hot air circulates consistently throughout the oven chamber. The result is perfectly baked pizzas, evenly cooked dishes, and enhanced flavor, making it a favorite among chefs and kitchen staff alike.

The PS840 offers a variable-speed conveyor system that allows users to adjust cooking times according to the specific requirements of different food items. This flexibility enables operators to achieve precise results, whether they are baking thin-crust pizzas or roasting vegetables. Additionally, the oven reaches optimal cooking temperatures quickly, minimizing wait times during peak service hours.

Energy efficiency is another key characteristic of the Middleby Marshall PS840 Series. Built with high-quality insulation and advanced heating elements, this series is designed to significantly reduce energy consumption while maintaining performance. This not only lowers operational costs but also supports sustainable practices in the foodservice industry.

The PS840 Series includes a user-friendly digital control panel that makes it easy for operators to set cooking times and temperatures, monitor performance, and switch between cooking modes. This intuitive interface reduces the learning curve for new staff and enhances overall productivity in busy kitchens.

Another notable feature of the PS840 Series is its durability. Constructed with robust materials, this oven is designed to withstand the wear and tear of a commercial kitchen environment. Its easy-to-clean surfaces and removable conveyor belt further enhance its maintenance convenience, allowing kitchens to maintain high hygiene standards with ease.

In summary, the Middleby Marshall PS840 Series stands out in the market for its exceptional cooking performance, energy efficiency, user-friendly controls, and robust design. These features make it a versatile and reliable choice for any establishment looking to enhance their food production capabilities while delivering quality dishes consistently. Whether utilized for baking, roasting, or reheating, the PS840 Series excels in meeting the demands of the modern foodservice industry.
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