Frymaster Super Runner Series, Super Marathon Series manual Pilot Fails to Light

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Pilot failures fall into one of two categories – failure to light or failure to remain lit.

Pilot Fails to Light

1.Gas is not being supplied to the valve: Check for a closed gas cutoff valve upstream of the gas valve. Also verify that the gas line quick disconnect fitting at the rear of the fryer (if so equipped) is properly connected.

2.Blocked pilot orifice: If gas is reaching the valve but the pilot will not light, check for an obstruction in the pilot orifice, especially in new installations. If the orifice is clear, check to be sure that the pilot adjustment screw is not completely closed.

Pilot Does Not Remain Lit When Gas Valve Knob is Released

The gas valve used on Dean millivolt fryers has a pair of normally open coils (electromagnetic switches) that close when low voltage is applied to them. If the coils do not close, the valve will not open to supply gas to the pilot or to the burner manifold. Turning the gas valve knob to the pilot position and pressing it in bypasses the pilot coil, allowing the pilot to be lit. The pilot flame heats the thermopile, which generates the voltage required to close the coils. If the pilot flame goes out when the knob is released, there are four probable causes:

1.Open or grounded high-limit:The high-limit thermostat functions as a normally closed switch. If the high-limit is open or grounded, the gas valve coil will not pull in and no gas will be supplied to the pilot or to the burner manifold.

Check and Corrective Action: Detach the high-limit leads from the gas valve and check for continuity. See page 1-10. If the high-limit fails the continuity check, it must be replaced.

2.Loose/corroded wiring connections on high-limit or thermopile: This has the same effect as a grounded or open high-limit. If the gas valve coils do not receive the appropriate voltage from the thermopile, they will not close and no gas will be supplied to the pilot or to the burner manifold.

Check and Corrective Action: Check wiring connections for corrosion and tightness. Check terminals to verify that they are securely attached to their leads.

3.Low or no voltage out of thermopile: If the pilot flame does not surround the tip of the thermopile, it will not generate sufficient voltage to the gas valve coils for them to close. No gas will be supplied to the pilot or to the burner manifold.

Checks and Corrective Actions: Observe pilot flame located between the middle burners on the frypot. If the pilot flame is less than 1-½ inches (38 mm) adjust the pilot flame in accordance with Section 1.6. If the flame is being blown away from the thermopile, eliminate the draft that is causing the problem.

If the pilot flame correctly surrounds the tip of the thermopile, see D on Page 1-9.

4.Malfunctioning gas valve: If either of the coils in the gas valve fails, no gas will be supplied to the pilot or to the burner manifold.

Check and Corrective Action: See page 1-10 for check procedures to see if the gas valve has failed. Instructions to replace the gas valve are found in section 1.7.3.

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Contents Super Runner and Super Marathon Series Hour Service HotlineMAY Page Iii Table of Contents Parts List NON-CE Altitudes of 2000 feet or less Functional DescriptionCE only Altitudes of 2000 feet or less Pilot Ignition System ThermostatsAccessing Fryers for Servicing Cleaning the Gas Valve Vent TubeCalibrating the Operating Thermostat Check Burner Manifold Pressure Replacing Fryer Components Adjusting the Pilot FlameReplacing the Operating Thermostat Replacing the Operating Thermostat Replacing the High-Limit Thermostat Replacing the FrypotTroubleshooting and Problem Isolation Pilot FailuresSystem Resistance Check Complete System CheckAutomatic Pilot Dropout Check Pilot Fails to Light Improper Burner Functioning Filtration Problems Leaking Wiring Diagrams Current Production Units with Honeywell Gas Valve Non-CECurrent Production Units with Honeywell Gas Valve CE Current Production Units with Robertshaw Gas Valve After May UFF Filtration Wiring Diagram OptionalCabinetry Components, Single Fryers Channel, Base- Front & Rear Non-Filtration Single FryersSide Panel, Left Suff Base Components- SM Series With Suff FiltrationSide Panel, Right Door Assembly Components Panel, Outer Door- SM20G Assembly 106-2482SPBase Channel, Front & Rear- SM220G, SM50G See .1 For Cabinetry Components, Multi-Battery Frying SystemsAdditional Single Fryer Base Channel Components Accessories Fluecap, SM20/20/50GDean Millivolt GAS Fryers Parts List Thermostat, Sunne Use 807-1692 for CE Frypot and Burner System Components 1 SM220 and SM20/20/~ SystemsFlue Assembly- SM20G SR Series, SM35G, SM40G and SM50G Systems Burner, Right- SR38G, SR42G, SM35G, SM40G Burner, Center- SR38G, SR42G, SM35G, SM40GBurner, Left- SR38G, SR42G, SM35G, SM40G Shield, Burner Heat- SR52G, SM5025 106-1742SPFlue Assembly- SR52G, SM50G Flue Assembly- SR38G106-0696SPFlue Assembly- SR42G 106-0954SPFlue Assembly- SM35G, SM40G3 SR62, SM60G and SM80G Systems SM80G ShownFrypot- M/S- SM80G Prior To 10/99 obsolete use Valve, Trailing Pilot- SM60G, SM80G, SR62G adjustment valveFrypot- S/S- SM60G, SR62G Use 823-3511SP for SM160G Flue Assembly- SM80G Flue Assembly- SM60G, SR62GOil Drain Manifold Componets Oil Drain Manifold, Drain Flush and Drain Valve Components Drain Valve ComponentsPlace Over 2 3 Oil Drain Manifold, Drain Flush & Drain Valve Components Flush Oil Drain LineOil Return Manifold Components Oil Return Manifold Components Fryers with 1½ Drains810-0051 200-1143 809-0877 106-2568SP Not Illustrated Oil Return Manifold Components Fryers with 3 Drains Oil Return and Oil Flush Components Oil Return and Oil Flush Components Fryers with 1½ DrainsMicroswitch Bracket Assembly, Oil Return Oil Suction Start FittingOil Return and Oil Flush Components Fryers with 3 Drains Oil Suction Assembly Suction Manifold AssemblyUnder Fryer Filter UFF Components 1 SM50 and SM60 Series Fryers Except Ihop2 SM50 Series Fryers, Ihop UFF 50 with Filter Leaf 3 SM80 Series Fryers Single Under Fryer Filter Suff Components 1 SM50 Series Fryers2 SM60 and SM80 Series Fryers This page Intentionally Left Blank Service Hotline
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