Jumper Setting

SECTION 3 - SERVICING COMPONENTS

Appendix - Instructions for Service Kit 47321 - Digital Temperature Controller Kit, 2/02

Loosen the Phillips screw at the bottom center of the faceplate. Then, pull the controller out of its sleeve.

Next, access the jumper shown in Figure 6. This jumper affects the signal that is output from Terminals 15 and 16. The jumper MUST be set to the correct position for proper operation of the controller.

CAUTION

If the jumper is incorrectly set, the oven will be unable to properly maintain temperature. In addi- tion, DAMAGE MAY OCCUR TO THE CONTROLLER AND OTHER OVEN COMPONENTS. Always make sure that the jumper is correctly set BEFORE restoring power to the oven!

•For gas ovens equipped with the modulating gas system, the jumper must be set to the “W1” position.

This instructs the controller to send a variable-current 4-20 mA signal from Terminals 15 and 16 to the amplifier board. The board converts this to a 0-24VDC signal which is sent to the modulating valve. The valve regulates the gas flow according to the need for heat to maintain the set point.

For gas ovens, you should always check inside the machinery compartment to see whether a modu- lating valve is present in the unit before setting this jumper.

•For electric ovens equipped with the variable pulse system, the jumper must be set to the “W2” position.

This instructs the controller to send a constant-current, pulsed 20VDC signal to the relay. Once per second, the signal “pulses” on proportional to the need for heat to maintain the set point.

As of 1/02, only the PS536 Electric oven uses the variable pulse system. Other oven models equipped with this system will be announced by Middleby as they become available.

•For all other ovens - gas or electric - that use the on-off system, the jumper may be set to either position.

After the jumper has been properly set, replace the controller into its sleeve and tighten the screw.

Figure 6

Programming

Jumper is set to the “W1”	Jumper is set to the “W2”
position for gas ovens with	position for electric ovens
modulating gas system	with variable pulse system

1.Restore electrical power to the oven.

2.Refer to Figure 7. Set the following options, according to the customer’s preferences:

•Set Point locked or unlocked

•Degrees Fahrenheit or Celsius

•Set Point or Actual Temperature display

3.Set the controller to PID or On-Off operating mode. Choose the PID mode for BOTH gas ovens with the modulating systemAND for elec- tric ovens with the variable pulse system.

4.Adjust the Set Point according to the customer’s specifications.

5.If the PID operating mode was chosen, per- form an Auto-Tune calibration as per the in- structions in Figure 7.

6.Check that the customer is familiar with the operation of the controller. The last page of these instructions includes an operating guide for the controller. Remove this page and leave

it with the customer for future reference.

Page 6 of 10

PS224 PS310, PS220, PS555, PS200, PS360 specifications

The Middleby Marshall PS555 is a standout commercial pizza oven renowned for its performance, efficiency, and advanced technologies. Designed with the modern pizzeria in mind, the PS555 delivers exceptional cooking results while maximizing energy efficiency and throughput.

One of the key features of the PS555 is its innovative cooking technology, which incorporates both convection and radiant heat. This unique combination ensures that pizzas are cooked evenly and quickly, achieving a perfectly crispy crust and evenly melted cheese every time. The oven’s high-speed air impingement system accelerates cooking times, allowing pizzerias to serve more customers in less time without compromising quality.

The PS555 is designed with a spacious cooking chamber that can accommodate multiple pizzas simultaneously. With its ability to fit pizzas up to 18 inches in diameter, the oven is ideal for establishments with high demand. Additionally, the adjustable conveyor speed allows operators to customize the cooking time based on their specific menu items, enhancing versatility and productivity.

Energy efficiency is a hallmark of the Middleby Marshall PS555. The oven utilizes advanced insulation materials to minimize heat loss, ensuring that it operates at optimal temperatures while consuming less energy. This efficiency not only reduces operating costs but also contributes to a more sustainable kitchen environment.

User-friendly controls make it simple for operators to manage the cooking process. The PS555 features digital controls with programmable settings, enabling quick adjustments to temperature and cooking time. This ensures consistent quality across different shifts and helps maintain product standards while simplifying staff training.

Durability is another defining characteristic of the PS555. Built with high-quality materials, the oven is designed for heavy use in busy commercial kitchens. Its stainless steel construction ensures resistance to wear and tear, making it a worthwhile investment for any pizzeria.

In summary, the Middleby Marshall PS555 pizza oven is a high-performance piece of equipment that combines advanced cooking technologies, efficiency, and durability. Its ability to deliver consistently excellent results while streamlining operations makes it an essential asset for any pizza business aiming to enhance its productivity and customer satisfaction.