III. Maintenance Every 3 Months | Middleby Marshall P/N 60250

III. MAINTENANCE – EVERY 3 MONTHS

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

B.Vacuum both of the blower mounts, and their surrounding compartments, using a shop vacuum.

C.Tighten all electrical terminal screws.

D.Split Belt Disassembly and Cleaning

1.Refer to Part D, Conveyor Installation, in the Installa- tion section of this Manual. Then, remove the following components from the oven:

•Conveyor end stop

•Crumb trays

•Chain cover

•Drive chains

•End plugs

•Conveyor assembly

2.Remove the master links from each conveyor belt.

Then, roll the belts up along the length of the conveyor to remove them from the frame.

3.Remove the two conveyor adjustment screws from the idler end of the conveyor frame, as shown in Figure 4-4.

4.Remove the idler shaft assembly from the conveyor.

5.Pull apart the two sections of the idler shaft.

6.Clean the shafts thoroughly using a rag. Then, lubri cate both the extended shaft and the interior of the hollow shaft using a light food-grade lubricant. DO NOT lubricate the shafts using WD40 or a similar product. This can cause the shafts to wear rapidly.

7.Before reassembling the shafts into the conveyor frame, check that they are oriented properly.

8.Reassemble the idler shaft into the conveyor. Make sure that the bronze washer is in place between the

Figure 4-4. Disassembling the idler shaft

two sections of the shaft. See Figure 4-4.

9.Replace the conveyor adjustment screws as shown in Figure 4-4. To allow the conveyor belt to be reinstalled later, do not tighten the screws at this time.

10.Loosen the set screw on both of the conveyor drive sprockets. Then, remove the sprockets from the shaft.

11.Check the conveyor configuration as follows:

High-speed conveyors are equipped with large flange bearings at both ends of the shaft, as shown in

Figure 4-5. For these conveyors, remove the two screws that hold each bearing to the conveyor frame.

With the screws removed, lift the end of the shaft at the front of the oven, and pull the entire assembly free of the conveyor frame.

Standard conveyors are equipped with bronze bush- ings mounted on spacers at both ends of the shaft, as shown in Figure 4-5. For these conveyors, remove the two screws that hold the bracket to the conveyor frame. With the screws removed, lift the end of the shaft at the front of the oven, and pull the entire as- sembly free of the conveyor frame. The brackets will be removed along with the drive shaft assembly.

12.Disassemble and lubricate the two sections of the drive shaft as described for the idler shaft, above.

13.Before reassembling the shafts into the conveyor frame, check that they are oriented properly.

14.Reassemble the drive shaft into the conveyor. Make sure that the bronze washer is in place between the two sections of the shaft. See Figure 4-4.

15.Replace the drive sprockets. Reassemble the belts and master links onto the conveyor.

16.Reinstall the end plugs and conveyor onto the oven.

17.Reattach the drive chains. Replace the chain cover.

18.Check the tension of the conveyor belt as shown in Figure 2-14 (in Section 2, Installation). The belt should lift about 1″ (25mm). If necessary, adjust the belt ten- sion by turning the conveyor adjustment screws.

19.Replace all components onto the oven.

Figure 4-5. Drive shaft configurations

25	P/N 60250 September 28, 2012

P/N 60250 specifications

The Middleby Marshall P/N 60250 represents a significant advancement in commercial cooking technology, specifically designed to meet the rigorous demands of the foodservice industry. This piece of equipment stands out due to its combination of speed, efficiency, and superior cooking performance, making it an invaluable asset for restaurants, pizzerias, and other food establishments.

One of the main features of the P/N 60250 is its high-speed cooking capability. Utilizing the patented "TurboChef" technology, this oven can cook food items much faster than traditional convection ovens, which significantly reduces wait times and improves service efficiency. The unique airflow design ensures that food is cooked evenly, resulting in high-quality products that meet the expectations of discerning customers.

The P/N 60250 also boasts an array of customizable cooking modes that enable chefs to adapt the oven to a variety of menu items. With settings for baking, broiling, and convection cooking, operators can utilize this versatile unit for diverse applications, from crispy pizzas to perfectly baked pastries. This flexibility allows establishments to expand their menu offerings while maintaining consistent food quality.

Another key characteristic of the Middleby Marshall P/N 60250 is its energy efficiency. This unit is engineered to consume less energy compared to standard ovens, which not only benefits the environment but also helps reduce operational costs for foodservice operators. The intelligent energy management systems integrated into the oven optimize performance while minimizing energy waste.

The ease of use is another hallmark of the P/N 60250. With a user-friendly interface and programmable controls, staff can quickly learn how to operate the oven, reducing the training time required. The intuitive design allows for seamless transitions between different cooking modes and settings, enhancing workflow in fast-paced kitchen environments.

Furthermore, the construction of the Middleby Marshall P/N 60250 is robust and durable, designed to withstand the rigors of a commercial kitchen. The stainless steel exterior not only provides an attractive finish but also ensures easy cleaning and maintenance, a crucial feature for busy establishments.

In summary, the Middleby Marshall P/N 60250 exemplifies the blend of advanced technology and practical features necessary in modern foodservice operations. Its high-speed cooking capabilities, customizable settings, energy efficiency, ease of use, and durable construction make it an essential tool for any kitchen looking to elevate their culinary offerings while maximizing productivity.

Middleby Marshall P/N 60250 III. Maintenance Every 3 Months, Split Belt Disassembly and Cleaning

Models: P/N 60250