ADC AD-410 service manual Dryer operates but is taking too long to dry

Page 113

Q.Microprocessor controller (computer) L.E.D. (light emitting diode) display reads “SEFL”...

1.Rotational sensor circuit failure... fault somewhere in the tumbler (basket) rotation or circuit ...

a.Tumbler (basket) not rotating ...

1)Broken tumbler (basket) drive belts.

2)Failure in drive motor circuit.

b.Bad rotation sensor.

c.Broken wire or connection between rotation sensor and microprocessor controller (computer).

d.Failure in rotational sensor circuit or magnet missing or gap to large.

R.Microprocessor controller (computer) L.E.D. (light emitting diode) reads “Hot”...

1.Possible overheating condition...microprocessor controller (computer) has sensed a temperature which has exceeded 220° F.

“Hot” display will not clear until temperature sensed has dropped to 220° F or lower and the microprocessor controller (computer) is manually reset by pressing the “CLEAR/STOP” key.

S.No heat (for STEAM MODELS ONLY)... both microprocessor controller (computer) L.E.D. (light emitting diode) heat indicator dot and the “HEAT” relay output L.E.D. are on...

1.Fault in 225° F hi-heat (limit) switch circuit or thermostat.

2.No (external) compressed air to steam damper...80 PSI required.

3.Failed steam damper 24 VAC pneumatic solenoid valve.

4.Failed steam damper pistons.

5.Steam damper stuck closed.

T.Dryer operates but is taking too long to dry...

1.Exhaust duct work run is too long or is undersized...back pressure cannot exceed .5 inches water column (W.C.).

2.Restriction in duct work...check duct from the dryer all the way to the outdoors.

3.Low or inconsistent gas pressure (for GAS MODELS ONLY).

4.Insufficient make-up air.

5.Poor air and gas mixture at burner - yellow or poor flame pattern...adjust gas burner air adjustment shutters (for GAS MODELS ONLY).

109

Image 113
Contents American Dryer Corporation Important Note to Purchaser Retain This Manual In a Safe Place For Future ReferenceFor Your Safety Page Table of Contents Section Troubleshooting AD-410 Reference Guide Base Section AD-410 Machine Operational Summary AD-410 Operator CONTROLS/INDICATORSControl Power On END of Cycle / Heater Fault Indicator / AIR JET AIR JET AD-410 Machine Operation Troubleshooting InformationLoad Tilted Unload TiltedDRY GAS Pressure If Both AIR Flow Switches are not Open AT this TimeImportant Information ONE 1 Burner will not Ignite During a Drying Cycle System Ladder DiagramONE 1 Burner will not Ignite AT the Beginning of a Cycle Lint Drawer / Guard Status Optional Sprinkler Control SignalsSolenoid Control Page What to do if YOU Smell GAS Explosion could ResultNational Electric Code ANSI/NFPA no -LATEST Edition StandardsLiquids CleaningSuggested Cleaning Schedule Monthly Lubrication Days After Installation and Every 6 Months Thereafter AdjustmentsGas Dimensions AD-410 with Inlet AIR Adapter Enclosure / AIR Supply / Exhaust Requirements Installation RequirementsElectrical Requirements and GAS Requirements Operational Service Check ProcedureDirect Spart Ignition DSI System COMPONENTS/FUNCTIONS Heat Section24 VAC Direct Spark Ignition DSI Module Repairable ADC Direct Spark Ignition DSI Operation Flow Chart Manometer Troubleshooting the Direct Spark Ignition DSI SystemMAN0677 Page If not, refer to the Second Visual Check on First Visual Check Second Visual Check Third Visual Check Are no Retries Leaks with a Flame Continuously Page Page Create a Potential Safety Hazard Page General Overview Steam Coil System OperationPage Page Page Page Sprinkler System Description Require any adjustment Page Page Supplies Before Servicing the Dryer MAN3169 Tilting System Description Page Tilting Pistons Page Page Page Page AIR JET Assembly Page Blower Squirrel Cage Fan Motor Assembly Leave enough movement for V-belt adjustment Page Important do not Overtighten V-BELTS Important do not Overtighten V-BELTS Page Page Filter and Regulator Assembly Door Systems Page Page Page Page Allow a full 72 hours for the silicone to cure Page Control and Electrical System Page Button does not Disable the High Voltage to the Dryer If the Opposite Side is not LEVEL, the Dryer will not Tilt ºC + Page Page Page Page Page Page MAN3405 Page Page Page Tumbler Basket System Important do not Over Tighten Turnbuckle Install new V-belts Tighten turnbuckle For Gear Reducer removal refer to Section d on page 99 Page Do not tighten 101 102 103 Troubleshooting Drive motor is not operating does not start Impellor fan motor is not operating does not start 107 108 Dryer operates but is taking too long to dry Excessive noise and vibration Dryer will not level from a tilt position Procedure for Functional Check Replacement Components 113 ADC450414 1- 05/27/99-25