Ignition Wire Flame Sensor
25 V GND
HV
TD
Coil

FBR18 & FBRA18 SERIES GAS RETHERMALIZERS

CHAPTER 6: SERVICE PROCEDURES

6.1Functional Description

These rethermalizers contain a welded stainless steel cookpot that is directly heated by a high effi- ciency burner system requiring approximately 43% less energy than conventional burner systems to heat the same volume of water.

Two self-contained combustion chambers (referred to as “burners”) are located beneath the cookpot. Each combustion chamber is fitted with special ceramic tiles that are heated by the burning of a forced air/gas mixture. The tiles transfer their heat to the cookpot by means of infrared radiation, providing much more constant and uniform heat dispersion over the surface of the cookpot than do conventional burners. Because relatively less heat is lost to the atmosphere in the process, compared to “open-burner” designs, less fuel is required to achieve and maintain a given cookpot temperature.

Gas flow to both of the burners is regulated by one electromechanical gas valve.

THE ELECTRONIC IGNITION SYSTEM

Ignition modules, located in the component box, are

Inside the Ignition Module

 

connected to ignitor assemblies at each burner. An

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ignition module performs four important functions: it

Out to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

provides fuse protection for the 24-volt circuit, provides

 

 

 

 

 

 

 

 

 

Gas Valve

 

 

an ignition spark, supplies voltage to the gas valve, and

To Alarm

 

 

 

 

 

 

 

 

proofs the burner flame. The module contains a 4-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

second time delay circuit and a coil that activates the

25 V +

 

 

 

 

 

 

 

 

gas valve.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The ignitor assembly consists of a spark plug, an enrichment tube, and a flame sensor.

At start-up, the power switch is placed in the ON position, supplying approximately 12-volts DC to the heat control circuitry in the controller and to one side of the heat relay coil on the interface board. If resistance

in the temperature probe indicates the temperature in the cookpot is below 160ºF (71ºC), the current flows through a warm-up circuit containing a timer switch that alternately closes for 4 seconds and opens for 24 seconds. If the temperature is 160ºF (71ºC) or above, the current flows through a heat circuit, bypassing the timer switch. In either case, ground is supplied to the other leg of the heat re- lay coil, which then closes an electronic switch in the 24 VAC circuit to provide current to the igni- tion module.

Circuitry in the ignition module sends 24 VAC to the gas valve. Simultaneously, the module causes the ignitor to spark for 4 seconds to light the burner. A flame sensor verifies that the burner is lit by measuring the flow of microamps through the flame. If the burner does not light (or is extin-

6-1

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Frymaster FBR18 Series manual FBR18 & FBRA18 Series GAS Rethermalizers Service Procedures, Functional Description
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FBR18 Series specifications

The Frymaster FBR18 Series stands out in the commercial kitchen arena for its innovative design, robust features, and advanced frying technologies. This series is specifically engineered to meet the demands of busy restaurants, fast-food establishments, and large-scale food service operations. With a focus on efficiency, durability, and food quality, the FBR18 Series has become a preferred choice for chefs and kitchen managers looking for reliable frying equipment.

One of the main features of the Frymaster FBR18 Series is its industry-leading oil filtration system. This self-filtering capability ensures that oil remains clean and minimizes the frequency of oil changes, leading to significant cost savings over time. The filtration system is designed for easy operation, allowing kitchen staff to focus on food preparation rather than maintenance.

The FBR18 Series is built with stainless steel construction, which enhances durability and simplifies cleaning. The sturdy design can withstand the rigors of a bustling kitchen environment. Additionally, the fryers are equipped with advanced heating technology, including high-efficiency gas burners that provide even heat distribution and reduce recovery time. This results in faster cooking cycles and improved product quality.

Temperature control is another hallmark of the FBR18 Series. With precise digital controls and built-in temperature monitoring, chefs can achieve optimal frying results every time, ensuring consistent quality across batches. The fryers are designed with safety features, including a shut-off mechanism that activates when the fry pot reaches an unsafe temperature, ensuring the safety of both the equipment and kitchen staff.

The FBR18 Series also offers versatility with multiple frying basket options, allowing operators to fry a variety of items simultaneously. The fry pots are spacious and can accommodate larger volumes, making them ideal for high-demand settings. This series is compatible with various frying mediums, including standard oils and specialty options, providing flexibility for different menu items.

In terms of energy efficiency, the Frymaster FBR18 Series incorporates various features aimed at reducing gas or electric consumption without sacrificing performance. This not only helps in lowering operational costs but also aligns with growing sustainability practices in the food service industry.

Overall, the Frymaster FBR18 Series combines cutting-edge technologies and practical features to deliver an exceptional frying experience. Its reliability, efficiency, and compliance with health and safety regulations make it an excellent investment for any commercial kitchen looking to elevate its frying capabilities. With an emphasis on quality and operator convenience, the FBR18 Series is a game-changer in modern frying solutions.
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