Belshaw Brothers and 734CG, 724CG, 718LCG manual Appearance Cause

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c.Make sure the electrical connections are clean and tight. Replace damaged wire with moisture-resistant #18 wire rated for continuous duty up to 221°F/105°C.

d.Check to see if ceramic insulator is cracked. A cracked insulator can cause a short to ground. Replace the igniter- sensor if necessary.

e.At the gas control, disconnect the main valve wire from the TH or MV terminal.

f.Connect the fryer to the power source and move the on/off switch to the ON position.

g.Turn on the power and set thermostat above 200°F/93°C to call for heat. The pilot should light, but the main burner will remain off because the main valve actuator is disconnected.

h.Check the pilot flame. Make sure it is blue, steady, and envelops 3/8-1/2”/

10-13 mm of the flame rod. See the table below for possible flame problems and their causes.

i.If necessary, adjust the pilot flame by turning the pilot adjustment screw on the gas control clockwise to decrease or counterclockwise to increase the pilot flame. Following adjustment, always replace the pilot adjustment cover screw and tighten it firmly to assure proper gas control operation.

j.Set the thermostat below 200°F/93°C to end the call for heat.

4.Recheck the ignition sequence as follows:

a.Reconnect the main valve wire.

b.Set the thermostat above 200°F/93°C to call for heat.

c.Watch the ignition sequence at the burner.

If the spark still does not stop after the pilot lights, replace the ignition module.

If the main burner does not light, check for 24V AC across MV-MV/PV terminals. If there is no voltage, replace the module. Also, check the electrical connections between the module and the gas control. If they are okay, replace the gas control or the gas control operator.

Appearance

Cause

 

 

small blue flame

lack of gas due to

 

clogged orifice filter

 

lack of gas due to

 

clogged pilot filter

 

low gas supply

 

pressure

 

pilot adjustment is at

 

minimum

lazy yellow flame

lack of air due to large

 

orifice

 

pilot adjustment is at

 

minimum

 

 

waving blue flame

excessive draft at pilot

 

location

 

products of

 

combustion are

 

recirculating

 

 

noisy lifting blowing

high gas pressure

flame

 

hard sharp flame

high gas pressure

 

orifice too small

 

 

Belshaw Bros., Inc. 1750 22nd Ave. S. Seattle, WA 98144 Phone 206-322-5474 Fax 206-322-5425

A-6

MN-1141EN

718LCG, 724CG, and 734CG Gas Fryers

Image 30
Contents Gas Fryer Operator’s ManualEquipment Record Contents Parts Lists Limited Warranty Insert Donut-Making HelpsPreface Page 1Installation Conforming to CodesSelecting a Workstation Initial Cleaning Unpacking the FryerAssembling the Fryer Installing the Fryer Installing the Heat Shield Splash ShieldMoving the Fryer Taking Safety Precautions Operation2Frying Donuts MN-1141EN 718LCG, 724CG, and 734CG Gas Fryers 718LCG, 724CG, and 734CG Gas Fryers MN-1141EN 3Cleaning Removing the ShorteningWashing Rinsing SB-0308 rev Maintenance4Use Rev to correct existing open Kettle Fryer settings SP1L set to 0 & PB set to Operator InterfaceMenu Flow Chart Menu OverviewOpen Kettle Fryer Parameter Settings Default SettingsMN-1141EN 718LCG, 724CG, and 734CG Gas Fryers Parameter Descriptions Set to NonE Parameter Descriptions Set to 5Troubleshooting Page Perform Visual Inspection Pilot ModuleCheckout Review the Normal Operating SequenceReset the Module Check Safety Shutoff OperationFigure A-1. Normal Operating Sequence Check Normal Operation Troubleshooting Ignition SystemTroubleshooting-General Check Ignition CableArc Length Check Spark Ignition CircuitCheck Pilot and Main Burner Lightoff What To DoAppearance Cause Donut-Making Helps Tips on Making Quality Cake DonutsTemperature Conversion Calculating Correct Water TemperatureRatios of Plunger Sizes to Donut Weights Plunger Size Donut Weight per DozenParts Lists 718LCG Parts List 718LCG Parts List CONT’D 724CG Parts List 734CG Parts List 0080A5 734FG Parts List Page US/Canada/Mexico Limited Warranty and Return Policy Exclusions