135

SECTION 3 - SERVICING COMPONENTS

Appendix - Instructions for Service Kit 36863 - Gas Conversion Kit for PS360EWB/WB70 with Midco Burner, Propane to Natural Gas, 1/98

Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • (847)741-3300 • FAX (847)741-4406

Middleby Marshall®

Oven Gas Conversion Kit p/n 36863

PS360EWB and PS360WB70

Propane to Natural Gas Installation Instructions

WARNING

This conversion kit is to be installed by a Middleby Marshall Authorized Service Organization in accordance with the manufacturer’s instructions and all codes and requirements of the authority having jurisdiction. Failure to follow instructions could result in serious injury or property damage. The authorized service organization performing this work assumes responsibility for this conversion.

This kit consists of the following parts:

Qty.	Units	p/n	Description
1	ea.	36862	Instructions for Conversion of Propane Operation to Natural Gas Operation, PS360EWB and
			PS360WB70
1	ea.	31818	Orifice, Pilot Assembly - Natural Gas, 0.032” (0.81mm)
1	ea.	31821	Orifice, Main - Natural Gas, 0.234” (5.94mm)
1	ea.	22174-0006	Orifice, Low Flame - Nat. Gas, 0.065” (1.65mm, #53 drill) - used for converting PS360WB70 only
1	ea.	22500-0064	Label, NAT, Green
1	ea.	22500-0123	Label, Conversion - Gas

IMPORTANT

When converting any oven that is installed at an altitude above 5000 ft. (1524m), consult Middleby before installing this Kit.

1. PREPARATION

1.1Turn off the electric power supply to the oven.

1.2Turn off the gas supply at the service valve behind the oven.

WARNING

Before performing any service or conversion work, the electrical power supply AND the gas supply MUST be turned off.

1.3Open the machinery compartment access door.

2. PILOT ORIFICE REPLACEMENT

2.1Unscrew the brass fittings at both ends of the aluminum pilot tubing that connects the pilot orifice to the combination gas control valve. This allows the tubing to be removed. See Figure 1.

Figure 1

Conversion component locations

	Solenoid valve
	(PS360WB70 only)	Main
		Main
		orifice
Low flame bypass		holder
Low flame bypass
(PS360WB70 only)
Combination gas
control valve		Pilot
		Pilot
		orifice
		Aluminum
		pilot tubing

p/n 36862	P. Jan. 98 Rev B	Page 1 of 4

135 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.

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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.

Middleby Marshall PS220, PS570, PS360, PS200 135, Propane to Natural Gas Installation Instructions

Models: PS224 PS310 PS220 PS555 PS200 PS360 PS570