SECTION 3 - SERVICING COMPONENTS

A. PS555/570-series ovens

All PS555/570-series ovens are equipped with two 1hp blower motors. Each motor indirectly drives a pulley on the shaft of a blower wheel with a fan belt.

Two main designs exist for the PS555/570 blower fan sys- tem:

•PS570/570S design. In this version, the pillow block bearings for the blower wheel shaft were mounted up- right, on brackets that were parallel to the fan belts. See Figure 42.

•PS555/570G design. In this version, the pillow block bearings are mounted with the grease fittings pointing in towards the center of the oven. See Figure 43.

The two designs share many common parts, including blower wheels, motors, and bearings. From a service standpoint, the major difference is the size of the pulleys and the length of the belts.

Blower motors on all PS555/570-series ovens are rated for

208-240V, single-phase, and are protected by:

•A built-in thermal overload protection device.

•Two 15A fuses or 15A circuit breakers. Refer to Figure 44 for the location of the fuses/breakers.

In addition, each blower fan is protected by an air pressure saftety switch that prevents the burner/heating elements from activating if the fan is not rotating. See Air Pressure Safety Switch on Page 81.

Figure 42 - PS570/570S blower configuration

Belt

Blower

motor Direction

of rotation

Pulley

Bearing

Blower Pulley

Blower wheel

 

shaft

(inside oven)

Figure 43 - PS555/570G blower configuration

Belt

Blower

motor

Pulley

Bearing

Blower Pulley

Blower wheel

 

shaft

(inside oven)

Figure 44 - Fuse/circuit breaker locations

 

 

 

 

PS555 (current),

PS570/570S:

 

PS555 (early):

 

 

PS570G: 15A

15A fuses located on

 

15A breakers located

 

 

 

breakers located on

left side of machinery

 

inside left blower

 

 

 

right side of machinery

compartment

 

motor compartment

 

 

 

compartment

 

 

 

 

 

 

 

 

 

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Middleby Marshall PS224 PS310, PS360, PS200, PS220 manual PS570/570S blower configuration, PS555/570-series ovens
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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.
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