Conveyor Belt Reversal

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	CORRECT
	of travel	master link
		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 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.

VI. ELECTRICAL SUPPLY

WARNING: Authorized installation personnel normally accomplish the connections for the ventila- tion system, electric supply, and gas supply, as arranged by the customer. Following these connections, the factory-authorized installer can perform the initial startup of the oven.

NOTE: The electric supply installation must satisfy the re- quirements of the appropriate statutory authority such as the National Electrical Code, CSA C22.2; the Aus- tralian Code AG601; or other applicable regulations.

NOTE: The electric supply connection must meet all national and local electrical code requirements.

Check the oven serial plate before making any electric supply connections. Electric supply connections must agree with data

PS640 specifications

The Middleby Marshall PS640 is an industry-leading conveyor oven designed to meet the demands of commercial kitchens, particularly in pizza and other high-volume food applications. This oven combines advanced technologies with robust design, ensuring that users achieve consistent, high-quality results while optimizing operational efficiency.

One of the standout features of the PS640 is its unique design, which includes a patented jet impingement technology. This technology significantly enhances the cooking efficiency by using high-velocity hot air to cook food evenly and quickly. This not only reduces cooking times but also helps retain moisture and flavor, resulting in a superior product that delights customers.

Another key characteristic of the PS640 is its dual-mode operation. The oven can be configured for either high-speed cooking or traditional baking modes, making it versatile enough to handle a wide variety of menu items. This flexibility allows operators to maximize their kitchen space and adapt to changing customer demands effortlessly.

The PS640 also boasts a fully insulated cooking chamber, which ensures consistent cooking temperatures and minimizes energy loss. This thermal efficiency not only contributes to food quality but also helps reduce operational costs, making it an economically viable option for restaurants and foodservice operations.

Further enhancing its user-friendliness, the PS640 features an intuitive digital control panel. This allows staff to easily set cooking times and temperatures, monitor performance, and make adjustments as necessary. Additionally, the oven includes programmable cooking settings, making it easy to replicate popular dishes quickly and ensuring consistency across multiple shifts.

Durability is another hallmark of the PS640. Constructed with high-quality materials, this oven is built to withstand the rigors of a busy kitchen environment. Its stainless-steel exterior not only gives it a sleek look but also makes it easy to clean and maintain.

In summary, the Middleby Marshall PS640 is a state-of-the-art conveyor oven that excels in speed, efficiency, and versatility. Its advanced technologies, user-friendly features, and robust construction make it an ideal choice for foodservice operators looking to elevate their cooking capabilities and enhance their menu offerings. Whether for quick-service restaurants, pizzerias, or catering operations, the PS640 delivers outstanding results with every use, ensuring satisfied customers and a thriving business.