ADC AD-310 service manual

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2)The Rotational Sensor is a magnetic proximity switch that is mounted on the side of the right hand 11-inch drive wheels. There is a magnet mounted to the side of the wheel hub. After each rotation of the wheel, the magnet passes by the proximity switch causing the contacts to close and pulse the Phase 5 microprocessor controller (computer). Whenever the magnet is over the proximity switch there should be contact closure.

3)There is an auxiliary keypad (touchpad) input to the Phase 5 microprocessor controller (computer).

A short between Pin #1 to Pin #5 of the 6-pin connector is like a "CLEAR/STOP" function on the keypad (touchpad). The PLC (Programmable Logic Controller) will trigger a clear stop whenever the dryer is in an unsafe operating mode, then disable the dryer's Phase 5 microprocessor (computer) from running a drying cycle.

a)Other functions of the 6-pin connector are as follows:

(1)A connection of Pin #1 to Pin #2 will run "A" Cycle.

(2)A connection of Pin #1 to Pin #3 will run "B" Cycle.

(3)A connection of Pin #1 to Pin #6 will run "C" Cycle.

b)When a drying cycle is started, the blower (fan and impellor) output (Pin #5) switches on putting 24 VAC on the blower (fan and impellor) contactor coil, which in turn pulls in the contactor starting the blower motor turning. Through the contactor relay this also triggers an input signal to the PLC (Programmable Logic Controller) disabling the tilting function. Moments later, the tumbler (basket and drum) begins to rotate because the output on Pin #3 turns on thereby pulling in the tumbler (basket and drum) forward contactor. Next, the Heat "On/Off" (Pin #4) will turn on if there is a call for heat, suppling 24 VAC to the heat circuit through the safety circuits.

(1)The first safety circuit is the Exhaust Hi-Limit which is located on the bracket above the lint basket with the temperature sensor. On a temperature rise of 225º F or higher, the thermal switch opens breaking the heat circuit.

(2)A second safety circuit is the Burner Hi-Limit Switch located on the side of the burner. On a temperature rise of 330º F or higher, the thermal switch opens breaking the heat circuit, this switch must be manually reset on models manufactured as of May 26, 1998.

(3)A third safety circuit is the Sail Switch which is attached to the front of the burner box. This device pulls in when the impellor (fan and blower) is operating correctly and verifies proper air flow.

If ALL the safeties are properly maintained, 24 VAC will enable the Direct Spark Ignition (DSI) Module and a try for ignition begins. The DSI module induces a spark (at the spark electrode) and then opens (energizes) the gas valve for 8-seconds attempting to light the burner. If after 8-seconds the burner does not light, the DSI module will go into a "LOCK-OUT" Mode (the gas valve will be de-energized and the spark will be removed from the ignitor) and will not try to light the burner again until power is again cycled to the DSI module. If the spark produces a flame then a microamp signal is monitored between the flame probe and ground which in turn will keep the burner on. The Heat "On" or "Off" (Pin #4 of the Phase 5 microprocessor controller [computer]) cycles the heat unless there is a fault at a safety sensor. At the end of a cycle the air jet turns on to clean off the impellor (fan and blower), which turns on Contact Relay #4, thereby signaling an input to the PLC (Programmable Logic Controller) that the cycle is complete which then turns on a PLC output relay to turn on the "END OF CYCLE" (E.O.C.) light.

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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-310 Reference Guide Base Section AD-310 Machine Operational Summary AD-310 Operator CONTROLS/INDICATORSControl Power On END of Cycle / Heater Fault Indicator / AIR JET AIR JET AD-310 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 AT the Beginning of a Cycle System Ladder DiagramONE 1 Burner will not Ignite During a Drying Cycle Solenoid Control Optional Sprinkler Control SignalsLint Drawer / Guard Status Page What to do if YOU Smell GAS Explosion could ResultNational Electric Code ANSI/NFPA no -LATEST Edition StandardsSuggested Cleaning Schedule CleaningLiquids Monthly Lubrication Days After Installation and Every 6 Months Thereafter AdjustmentsGas Dimensions Obligation Page ADG-310 Gas Non-Tilt 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 SystemPage Page Page 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 Prior to November 14 As of November 14 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 MAN3405 Page Page Page Tumbler Drive System Important do not Over Tighten Turnbuckle Install new V-belts Tighten turnbuckle Page 100 Do not tighten 102 103 104 Troubleshooting Drive motor is not operating does not start Impellor fan motor is not operating does not start 108 109 Dryer operates but is taking too long to dry Excessive noise and vibration Dryer will not tilt Procedure for Functional Check Replacement Components 114 ADC450413 05/11/99-25 01/31/00-5

AD-310 specifications

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