Middleby Marshall PS640E Conveyor Belt Reversal, Reversing the Conveyor Belt, Final Assembly

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5.If it is necessary to add or remove conveyor links to achieve the correct tension, OR if it is necessary to reverse the conveyor belt for correct orientation, the belt will need to be removed from the conveyor frame. If this is necessary, perform the following procedure:

•Remove the conveyor assembly from the oven and place it flat on the floor.

•Remove the master links using long-nose pliers. Then, roll up the belt along the length of the conveyor frame.

•Add or remove belt links as necessary to achieve the correct belt tension.

•Replace the belt on the conveyor frame. Check that the conveyor belt links are oriented as shown in Figure 2-15, and that the smooth side of the conveyor belt faces UP.

•Connect the inside master links. Check that the links are oriented as shown in Figure 2-15.

•Connect the outside master links. Note that the outside master links each have an open hook on one side. This hook aligns with the hooks along the sides of the other conveyor links. See Figure 2-15.

•Replace the conveyor into the oven.

Figure 2-15. Conveyor and Master Link orientation

Direction

CORRECT

of travel

master link

 

 

position

Incorrect

master link

position

E.Final Assembly

1.Install the crumb trays underneath the conveyor as shown in Figure 2-16.

Figure 2-16. Crumb Trays

Crumb tray insertion

CONVEYOR BELT REVERSAL

Conveyor belt reversal consists of three steps:

1.Physically reversing the conveyor belt.

2.Resetting direction jumper on the conveyor control board.

3.Switching the photo detector.

REVERSING THE CONVEYOR BELT

Remove the conveyor from the oven and find the master link location. Remove master links and remove the belt from the conveyor frame. Reassemble the belt back onto the frame (in the reverse direction) and reinstall the master links. Replace the conveyor assembly in the oven.

RESETTING DIRECTION JUMPER

Locate Jumper P1 on the conveyor control board. Move jumper from terminals 1 and 2, and replace onto terminals 2 and 3.

CAUTION: Shock hazard in compartments electrical filters are electrically alive.

SWITCHING PHOTO DETECTOR

CAUTION: Disconnect Power Before Switching Photo eye.

Remove the three screws securing the access door to the unit. Open the access door and disconnect the connector fitting to the photo eye assembly. Remove the two screws securing the photo eye assembly to the control box. Remove the four nuts securing the photo eye to the housing. Rotate the photo eye 180 degrees and resecure the photo eye with the four nuts.

On the opposite control box, remove the two screws holding the cover where the photo eye assembly will be positioned. Secure the photo eye assembly in position with the two screws. Place the photo eye cover on the opposite control box, where the photo eye assembly was removed, and secure the two screws. Secure the access door with the three screws.

Remove the three screws securing the access door on the opposite side. Open the access door, where the photo eye is now positioned, and connect the photo eye connector fitting. Secure the access door with the three screws.

Apply power to the unit. Adjust the photo eye height by loosen- ing the two screws securing the photo eye assembly and sliding the photo eye assembly either up or down, such that the beam is approximately 1/4 inch above the belt.

Note: This is MUCH easier in reduced light.

Replace all covers.

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Contents Owners Operating and Installation Manual Retain this Manual for Future Reference Middleby Marshall Table of Contents Description Not ShownGeneral Specifications DimensionsRecommended Minimum Clearances Installation Kit Parts List for Series PS640 Electric Oven Installation KIT″ Legs Casters& Top Casters & Top Kit Model PS640 Single Oven Option Base with Legs and Top Model PS640 Double Oven Option Base with Legs and Top Model PS640 Triple Oven Option Base with Outriggers and Top III. Ventilation System RequirementsRecommendations Other ventilation concernsIV. Assembly Top Panel and Base Pad AssemblyRestraint Cable Installation StackingConveyor Installation Do not Overtighten the Conveyor BeltResetting Direction Jumper Switching Photo DetectorFinal Assembly Conveyor Belt ReversalIV. Electric Supply for Electrically Heated Ovens 18. Utility Connection Locations forDo not USE Conduit for Ground Connection Electric Supply to be Provided by CustomerLocation and Description of Controls Normal Operation STEP-BY-STEP Main ScreenDaily Startup Procedure Daily Shutdown ProcedureOven Temperature/Set Point/Indicator Screen Quick Reference Touch Screen Controller Main ScreenIII. Quick Reference Troubleshooting Maintenance Maintenance DailyII. Maintenance Monthly Top Row Bottom RowIII. Maintenance Every 3 Months Split Belt Disassembly and CleaningIV. Maintenance Every 6 Months Blower BeltKey Spare Parts Problem Oven does not Heat ProblemWiring Diagram 60231 Rev. A4

PS640E specifications

The Middleby Marshall PS640E is a state-of-the-art conveyor oven designed to meet the demands of high-volume food production with efficiency and precision. This innovative oven is widely used in pizzerias, restaurants, and various commercial kitchens, renowned for its ability to deliver consistent and high-quality food results.

One of the main features of the PS640E is its energy-efficient design. Utilizing advanced energy management technology, this oven minimizes energy consumption while maximizing cooking performance. The oven is equipped with a high-performance jet plate system that provides even heat distribution, ensuring that every dish is cooked uniformly. This technology substantially reduces cooking times, allowing operators to serve meals faster without compromising quality.

The PS640E also incorporates advanced temperature controls and an intuitive digital interface, which enable precise temperature adjustments throughout the cooking process. This feature is crucial for achieving optimal results, especially when working with a variety of food items that may require different cooking conditions. The digital controls allow for easy programmability, enabling chefs to create custom cooking profiles tailored to their specific menu items.

Another standout characteristic of the PS640E is its dual belt system. This innovative feature maximizes throughput by allowing different cooking temperatures on each belt, facilitating the preparation of diverse menu items simultaneously. This is especially beneficial in busy kitchen environments where efficiency and speed are crucial.

The oven's robust construction ensures durability and reliability under heavy use, making it a trusted choice for commercial operators. Its stainless-steel exterior not only enhances its aesthetic appeal but also makes it easy to clean and maintain. Furthermore, the PS640E has been designed with ergonomics in mind, promoting ease of use for kitchen staff.

In addition to its core functionalities, the Middleby Marshall PS640E supports a variety of cooking applications, making it a versatile addition to any kitchen. From pizzas and baked goods to roasted meats and vegetables, this oven excels in a wide array of culinary tasks, helping operators diversify their menu offerings.

In conclusion, the Middleby Marshall PS640E stands out in the crowded marketplace of commercial ovens due to its combination of energy efficiency, advanced cooking technologies, and versatile applications. Its robust design, precise controls, and user-friendly interface make it an indispensable tool for chefs and kitchen operators striving for excellence in food preparation.
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