Frymaster 1824/2424G manual Pilot System Configuration, Electronic Ignition Configuration

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24G SERIES FLATBOTTOM GAS FRYERS CHAPTER 1: SERVICE PROCEDURES

Pilot System Configuration

The pilot system is the pilot orifice, pilot hood, and a thermocouple. The pilot serves two purposes. The first is to light the burner, the second is to heat the thermocouple. In operation, the thermocouple is in contact with the pilot flame and generates millivolts. The millivolt output energizes the gas valve pilot coil, which in turn opens the pilot valve. If the pilot flame is extinguished, voltage is lost to the gas valve pilot coil and the pilot valve closes. The gas valve is constructed so that the main valve will not open if the pilot valve is not open. The pilot flame must be manually lit when the fryer is first placed into operation. A separate circuit, activated by the fryer ON/OFF switch, provides voltage through the Thermatron temperature controller to the gas valve main coil, which opens the main valve.

					Main Coil
					Gas
					Valve
					Pilot Coil
				Thermocouple
				High-Limit
	14	NC	RELAY	Thermostat
	12 13	COM		Pilot
	12 13	NO		Pilot
	10 11	PROBE
	9	1A	EXT POT
	7 8	3A 2A	EXT POT		Line Voltage
	3	AC2
	2	AC1
	1
6	5			ON/	Line Voltage
MELT CYCLE DISABLE				ON/	Line Voltage
Thermatron Temperature				OFF
Thermatron Temperature				Switch	The Pilot System
Controller					The Pilot System
					120V

Electronic Ignition Configuration

In units configured for electronic ignition, an ignition module connected to an ignitor assembly replaces the pilot system. The ignition module performs three important functions: it provides an ignition spark, supplies voltage to the gas valve, and proofs the burner flame.

The module contains a time delay circuit and a coil that activates the gas valve. The ignitor assembly consists of a spark plug and a flame sensor element.

At start-up the ON/OFF switch is placed in the "ON" position, supplying 115 VAC or 230 VAC, according to system configuration, to the Thermatron interface board. The voltage is stepped down via transformer to 24 VAC before entering the ignition module. If resistance in the temperature probe indicates the temperature in the frypot is below 150°F (66°C), the current flows through a melt

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Contents 24G Series Flatbottom Gas Fryers Hour Service Hotline DECPage Computers Where Applicable FCC 24G Series Flatbottom Gas Fryers Table of Contents NON-CE Altitudes of 2000 feet or less Functional DescriptionCE only Altitudes of 2000 feet or less Electronic Ignition Configuration Pilot System ConfigurationControl Options Thermatron Controller Board Safety Components Accessing Fryers for ServicingAdjusting Burner Manifold Gas Pressure Cleaning the Gas Valve Vent Tube if applicableCalibrating the Thermatron Temperature Controller Adjusting the Pilot Flame where applicableLoosen two setscrews in dial arrows to recalibrate Replacing Fryer Components Remove/Replace Temperature Probe or High-Limit ThermostatTemperature probe High-limit Removing/Replacing Rocker Switches 24G Series Flatbottom GAS Fryers Service Procedures Removing/Replacing Blower Assembly or Air Prover Switch Replacing air prover switch Frypot Baffle Inspection Replacing the FrypotFrypot/Firebox Removal/Replacement Procedure 24G Series Flatbottom GAS Fryers Service Procedures If the Firebox Requires Replacement Troubleshooting and Problem Isolation Ignition Failures Problems Related to the Electronic CircuitsImproper Burner Functioning 24G Series Flatbottom GAS Fryers Service Procedures Filtration Problems Improper Temperature Control24G Series Flatbottom GAS Fryers Service Procedures Leakage Troubleshooting Guides Main Burner Malfunctions Power is present atTo temperature quickly TemperatureLight Indication Probable Cause Corrective Action Indicator LightsWiring Diagrams 10.2 24G Series Single Fryers, Non-CE with Boil-Out Switch 24G Series Flatbottom GAS Fryers Service Procedures 24G Series Flatbottom GAS Fryers Service Procedures 24G Series Flatbottom GAS Fryers Service Procedures 24G Series Flatbottom GAS Fryers Service Procedures 24G Series Flatbottom GAS Fryers Service Procedures 10.8 24G Series Single Fryers CE-ApprovedWiring, Standing Pilot Scfc Models 10.10 24GTI Oil Return/Filter System Blower Assembly and Combustion Air 24G Series Flatbottom GAS Fryers Parts ListBurner Manifold and Related Components Component Flue Caps, Top Caps, and Related Components 2424G Notched Left End use 823-4058 for notched right end Cabinetry Scfc Models Common Cabinet Components Scfc ModelsNot illustrated Door Assemblies and Component Parts Scfc Models Control Panels, Wireways, and Related Components Scfc Models Component Oil Return and Suction Manifolds Scfc Models Component Filter Unit Scfc Models Frypot, Drain, and Oil Return Components Scfc Models 24G Series Flatbottom GAS Fryers Parts List Cabinetry SCF Models Previous Style SCF ModelsBack, Single Fryer Cabinet Door Assemblies and Component Parts SCF Models Control Panels, Wireways, and Related Components SCF Models Not illustrated Oil Return and Suction Manifolds SCF Models Component 24G Series Flatbottom GAS Fryers Parts List Caster, 2-inch Rigid use 810-2805 for 2-inch Swivel Caster Filter Unit SCF ModelsFrypot, Drain, and Oil Return Components SCF Models Component Drain Valve and Components Connectors 2-Pin Female 6-Pin Female 9-Pin Female Wiring Connectors, Pin Terminals, and Power CordsScrews, Nuts, and Fasteners Appendix ND90 Built-In Filter System Components Line Parts Pump, 5GPM use 810-2098 for 8GPM Pump Seal, Shaft O-Ring Service Hotline