Airstream PNEG-343 HOW to Determine a Metering Roll Problem, HOW to Clear a Jammed Metering Roll

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SERVICE

HOW TO DETERMINE A METERING ROLL PROBLEM

To determine if the metering prob- lem is from blockage, perform the following test with the power off.

Remove the drive chain by loos- ening the motor mounting bolts. Refer to photo, and place a pipe wrench on the hub of the roller chain sprocket, on the left hand metering roll at the drive end of the dryer. Apply up to 100 ft. lbs. of force, and attempt to rotate the roll toward the inside of the dryer. If the metering

The metering roll drive.

HOW TO CLEAR A JAMMED METERING ROLL

roll will turn, then repeat for right hand side. If the metering roll will turn, it can be assumed that no blockage exists, and the problem is from some other cause. Check for a break in the power train, chain, drive key, pin, etc.

CAUTION: Keep hands away from sprocket teeth to avoid injury from chain backlash, as a result of torsion build up in the system caused by the jam.

Place a pipe wrench on the hub of the sprocket of the jammed meter- ing roll and turn the roll. First, back- ward, and then, forward several times in an attempt to dislodge the object, and clear it through the roll. If this is not successful, have an assistant turn the metering roll, and attempt to locate the jam by sound. Shut down the fan/heater, and eliminate any other

noise when making this check. Once the location is determined, the roll can be reached from the outside by open- ing the access door to remove the for- eign object causing the jam (before opening doors see below). The ser- vice tool must be inserted before open- ing doors. First, swing open the ple- num bottom closure panel. Insert the service tool above the metering roll.

The auger discharge switch.

SERVICE TOOL

This column cutoff damper is designed to insert through the grain column (from the inside of the dryer) immediately above the metering roll. This permits opening of the metering roll access door. For service or inspec- tion without unloading the dryer, the plenum bottom closure panel and metering roll adjust damper must be removed prior to using service tool.

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Contents Ryer Operation Page Series Dryer Operation and Service Table of ContentsWarranty Safety First Safety Alert SymbolSafety Alert Decals Careful Operator Is the Best Insurance Against AN AccidentSafety Alert Decals Safety Precautions Keep the Dryer Clean Do not Allow FineMoisture Control Switch Dryer Control PanelMoisture Control Thermostat Information regarding dryer operationControl Power Switch Drying Mode SwitchLoad Auger Switch FAN SwitchesDryer Power Start Switch Dryer Power Stop SwitchSetting the DRY, Cool Batch and Unload Timers Setting the OUT Grain TimerElectronic Monitoring Control System Turning on Electronic Monitoring Control SystemUtilizing Bushel Counter Setting the Load Unload DelaysDryer Safety Circuit Safety Circuit Shutdown Messages Dryer PRE Start Checks PRE Season InspectionTWO Speed Operation Load AugerONE Speed Operation Metering Roll OperationBurner Safety Burner Test FireEmergency Staged Batch CheckDryer Shutdown Continuous Flow and Continuous Batch Start UP Procedure Turn the control power switch to onDryer Start UP Continuous Flow OperationFull Heat Series Continuous Flow Metering Roll SettingsDryer Start UP & Operation Continuous Flow Metering Roll Settings Dry & CoolStaged Batch Operation Staged Batch FAN & Heater Switch Settings Matically shut down during the cooling and unloading cyclesSeries Batch Timer Settings Full Heat Dry & CoolSeries Staged Batch Timer Settings Series Service Guide Lube Procedures ServiceSeasonal Inspection and Service Suggested Lubricants Insulation Class Consistency Type Grease Frame TypeClearance Holes FAN Propellor Removal and InstallationThreaded Bushing Holes FAN Motor Removal and Installation Heater Parts Removal and Installation Metering Roll Servicing Main ControlsService Tool HOW to Determine a Metering Roll ProblemHOW to Clear a Jammed Metering Roll Series Wiring Diagrams INPUT/OUTPUT Board Terminal Identification Series Wiring to Control BOX Series Control Wiring Series Safety Wiring Diagram Series Front Panel Internal Wiring Series Front Panel External Wiring Dryer FAN can Control Wiring Series 220 Volt Single Phase Control Wiring Series 220 Volt 3 Phase Power Wiring Series 440 Volt 3 Phase Power Wiring Trouble Analysis Procedure Problem Possible CauseDisplay shows Burner 1, 2 or 3 Warning Flame May not be turning. The air switch may need adjustment Problem Possible Cause Trouble Analysis Procedure Change the marquee on the LCD dis- play Press the enter button when desired setting is reachedQuick Reference Guide Page