D. Pilot/Ignitor Assembly

The pilot assembly is attached to the end of the pilot line. It consists of an ignitor electrode/flame sensor, a pilot shield and the pilot burner. See Figure 63.

The pilot assembly includes a safety circuit. An electrical current is sent to the flame sensor probe to prove the pres- ence of the pilot flame. When the spark ignites the pilot, a circuit is completed THROUGH THE FLAME from the flame sensor probe to the pilot burner, which is grounded. This safety circuit must be completed before the pilot will light.

1.Pilot Shield

The pilot shield is a plate located on the bottom of the pilot. It prevents drafts, etc. from blowing the pilot flame away from the sensing probe. See Figure 64.

2.Flame target

The flame target aids in distributing the flame from the end of the venturi. See Figure 65.

PS310/360-series ovens built prior to 6/87 are not equipped with a flame target. The burner on these ovens resembles the one shownin Figure 64.

The angled flame target is used on:

-PS200-series ovens built through 3/02.

-PS310, PS314, PS360 and PS360WB ovens built 6/87 or later.

-PS570S ovens.

All of these ovens use a 120V burner blower motor. Most units equipped with the 120V burner blower motor also use the angled flame target.

The round flame target is used on:

-PS200-series ovens built 4/02 or later.

-PS360EWB and PS360WB70 ovens equipped with the Wayne burner system.

-PS555 and PS570G ovens.

All of these ovens use a 208/240V burner blower motor. All ovens equipped with the line voltage burner blower motor use the round flame target.

SECTION 3 - SERVICING COMPONENTS

Figure 63 - Pilot/ignitor assembly

Pilot line

connects here

Pilot burner

Hood

Ignitor/sensor

Spark cable

probe

connects here

Figure 64

End of burner without flame target

showing pilot shield

Pilot

shield

Figure 65

Flame targets

Angled

Round

target

target

93

Page 94
Image 94
Middleby Marshall PS220 End of burner without flame target Showing pilot shield, Flame targets, Pilot/Ignitor Assembly

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.