SECTION 3 - SERVICING COMPONENTS

D. Appendices

Appendix - Instructions for Service Kit 39733 -

 

High Limit Conversion Kit for PS300, 310, 350 & 360 Ovens, 5/99

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

Instructions for Service Kit 39733

High Limit Conversion Kit for PS300, 310, 350, & 360 Ovens

KIT COMPONENTS - Check that the kit includes ALL of these parts BEFORE you begin!

Qty.

P/N

Description

Qty.

P/N

Description

1

39732

Instructions

2 ft./610mm

27152-0050 Wire, #18 AWG, brown

1

34982

Watlow high limit control module

2 ft./610mm

27152-0053 Wire, #18 AWG, white

1

30693

Reset switch w/ lighted pushbutton

2 ft./610mm

27152-0054 Wire, #18 AWG, purple

1

35634

Mounting bracket, reset switch

8

1455A8750

Wire connector, 1/4”/6.4mm

1

35691

Wire set, reset switch (includes 4

1

3002693

Wire tie, nylon

 

 

wires and 3 1/4”/25mm connectors)

2

2000076

Screw, 6-32 X 1-5/8”

1

33812-1

Thermocouple, type J, 6”/152.4mm

2

1421B8803 Screw, 6-32 X 1/4”

1

39690

Mounting sleeve, thermocouple

4

2001327

Nut, 6-32

TOOLS REQUIRED

•Drill with 3/16” drill bit

•Middleby Marshall Thermocouple Signal Source Generator (P/N 27170-0192)

•Wire cutters/strippers

A. OVERVIEW

This Service Kit is used to replace two different types of United Electric high limit/cooldown controllers with a Watlow high limit controller for PS300, 310, 350, and 360 Ovens. See Figure 1.

•The early (Type 54) United Electric control was ONLY equipped with a high limit circuit. Ovens equipped with this control did NOT have a cooldown circuit. This control was used on the following models:

-PS300/350 Gas (early)

-PS300/310/350/360 Electric (early - all voltages)

For these ovens, the kit directly replaces the Type 54 high limit control with the Watlow high limit con- trol.

•The later (Type 55) United Electric control was equipped with BOTH high limit and cooldown circuits, and was used on the following models:

-PS300/310/350/360 Electric (late), 208/240V and 480V UL versions ONLY

For these ovens, the kit replaces the Type 55 con- trol with the Watlow high limit control, and uses the oven’s temperature controller to provide the cooldown circuit.

Figure 1

United Electric Type 54

High Limit Control

United Electric Type 55

High Limit/Cooldown

Control

Lighted Reset

Switch

Watlow High

Limit Control

 

P/N 39732

Page 1 of 8

Rev. B • V1 • 5/99

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Middleby Marshall PS224 PS310, PS570, PS360, PS200, PS555, PS220 High Limit Conversion Kit for PS300, 310, 350, & 360 Ovens
Page 46 Page 48

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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