SECTION 4 - MAINTENANCE

WARNING

Before ANY cleaning or servicing of the oven, perform the following procedure:

1.Switch off the oven and allow it to cool. Do NOT service the oven while it is warm.

2.Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven. When all cleaning and servicing is complete:

1.If the oven was moved for servicing, return the oven to its original location.

2.If the restraint cable was disconnected to clean or service the oven, reconnect it at this time.

3.Reconnect the electrical supply.

4.Turn on the electric supply circuit breaker(s).

5.Perform the normal startup procedure.

WARNING

Possibility of injury from moving parts and electrical shock exists in this oven. Switch off and lockout/tagout the electric supply BEFORE beginning to disassemble, clean, or service any oven. Never disassemble or clean an oven with the BLOWER () switch or any other circuit of the oven switched on.

CAUTION

NEVER use a water hose or pressurized steam-cleaning equipment when cleaning this oven. To avoid saturating the oven insulation, DO NOT use excessive amounts of water. DO NOT use a caustic oven cleaner, which can damage the bake chamber surfaces.

NOTE

ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized Service Agent. It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this section be performed ONLY by a Middleby Marshall Authorized Service Agent.

I. MAINTENANCE - DAILY

Figure 4-1. Cooling Vents and Grills

A.Check that the oven is cool and the power is discon- nected, as described in the warning at the beginning of this Section.

B.Clean ALL of the cooling fan grills and vent openings with a stiff nylon brush. Refer to Figure 4-1 for the locations of the grills and vents.

C.Clean the outside of the oven with a soft cloth and mild detergent.

D.Check that ALL cooling fans are operating properly.

CAUTION: If a cooling fan is not operating correctly, it must

be replaced IMMEDIATELY. Operating the oven without adequate cooling can seriously damage the oven's internal components.

E.Clean the conveyor belts with a stiff nylon brush. This is more easily accomplished by allowing the conveyor to run while you stand at the exit end of the conveyor. Then, brush the crumbs off the conveyor as it moves.

F.Remove and clean the crumb trays. If necessary, refer to Figure 2-16 (in Section 2, Installation) when replacing the crumb trays into the oven.

G.Clean the window in place.

Vents on front panel

of oven

Fan grills (3) on rear

Vents (2) on rear

of oven and control

of machinery

compartment

compartment

19

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Middleby Marshall PS640E installation manual Maintenance Daily
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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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