Manuals / Middleby Marshall / Kitchen Appliance / Double Oven

Middleby Marshall PS220, PS570, PS360, PS200, PS555, PS224 PS310 manual Servicing Components

Models: PS224 PS310 PS220 PS555 PS200 PS360 PS570

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SECTION 3 - SERVICING COMPONENTS

Appendix - Instructions for Service Kits 33984 and 33985 -

Oven Thermocouple Kit, 11/01

PS570 (X01-X05 name plate ID numbers) and PS570S (early) with side-mounted thermo- couples inside or outside the blower motor compartments

These ovens are equipped with two thermocouples, one on each end wall of the oven. The thermocouples may be mounted either inside or outside of the blower motor com- partments.

•The thermocouple on the right side of the oven has two leads and sends its signal to the temperature controller.

•The thermocouple on the left side of the oven is a dual- function unit. It has FOUR LEADS and sends indi- vidual signals to the temperature controller and the high limit control module.

Installing this Kit will replace BOTH thermocouples with current three-lead versions located on the back wall of the oven. The Kit also requires the installation of a THIRD ther- mocouple to act as a high limit sensor. Because of this, you will need three separate thermocouple kits for these ovens.

If the oven has already been updated with the rear-wall ther- mocouple configuration, you can simply replace the affected thermocouple. Follow the instructions for PS570S (late) rear wall thermocouples on Page 10.

1.If the thermocouples are located outside the blower motor compartments, remove and retain the thermo- couple covers.

2.Remove the end plugs from the oven. Then, remove 1 or 2 air fingers from each end of the oven as necessary to access the thermocouple mounting tubes.

3.Remove the rear shrouds. Open the blower motor com- partment doors.

4.Remove the cooling fans from both blower motors. Then, remove the blower belts.

5.For each thermocouple:

•Disconnect the thermocouple leads from the ter- minal block inside the blower motor compartment.

•Remove and discard the screws that hold the ther- mocouple mounting tube to the plenum wall. Re- move and discard the thermocouple and tube.

•Plug the internal and external openings left by the tubes using a high-temperature silicone sealant.

6.If the thermocouples were located outside the blower motor compartments, replace the thermocouple cov- ers.

7.Refer to Figure 11. Measure and scribe marks in the rear wall of the oven for drilling the thermocouple mount- ing holes. Make sure that your measurements begin at the edges of the rear panels, and NOT at the outer edges of the oven!

Note that there are two different thermocouple placement locations: one for Pizza Hut (and Pizza Hut International, or Tricon) ovens, and one for all other ovens.

8.Drill the new thermocouple mounting holes using an 11/32” (8.73mm) D x 8” (203mm) L bit. Make sure that you drill through all three walls of the oven.

9.Drill the two screw mounting holes for each thermo- couple using a 7/64” (2.78mm) bit. Tap the holes using a #6-32 tap.

10.If necessary, remove air fingers from the oven to ac- cess the areas around the new thermocouple mount- ing holes.

11.Vacuum out ALL drill shavings. If the oven is equipped with a screen over the openings for the lower air fin- gers, use a flexible hose extension on the vacuum to reach the shavings through the upper air finger open- ings.

12.Reinstall the air fingers and end plugs onto the oven.

13.Install the three new thermocouples into the back wall of the oven. Check that the thermocouple flanges are flush with the back wall.

14.Secure each thermocouple in place with the two kit- supplied #6 x 3/8” screws.

15.Wire the thermocouples as shown in Figure 12. The thermocouples should be wired to the terminal block inside the blower motor compartment closest to the thermocouple.

IMPORTANT

As you wire the thermocouples, be sure to connect a single chassis ground wire to the mounting screw for the terminal block. See Figure 12.

A good ground connection for the thermocouple’s uninsulated lead is REQUIRED for proper operation!

16.If you will be replacing additional thermocouples, re- peat Steps 7-15 as necessary.

17.Using the kit-supplied nylon clamps and #10-16 x 3/4” screws, secure the thermocouple leads to the back wall of the oven so that they will clear the shrouds, blower belts, and pulleys.

18.Replace the blower belts and cooling fans.

19.Close the blower motor compartment doors. Replace all shrouds onto the oven.

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Middleby Marshall PS220, PS570, PS360, PS200, PS555, PS224 PS310 manual Servicing Components
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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.