American Dryer Corp ADG-464 manual Sprinkler Circuit Description

Page 60

•L4 (light #4) is an “amber” light associated with PB #10 (push button #10), the “SPRINKLER RESET” button. These items are located on the electrical enclosure’s front panel. L4’s function is to give a visual indication that the sprinkler function is asserted and that the pneumatically activated water valve is open.

•The air actuated water valve also has a visual indicator to show its current state. Notice a “RED” button on the rear side of the valve.

•IN = Valve CLOSED

•OUT = Valve OPEN

NOTE: The sprinkler water inlet line has a hand operated gate valve and must be open for water to flow. It is suggested that this manual valve be closed when working on the dryer, to avoid problems caused by false tripping of the sprinkler circuit.

IMPORTANT: BE SURE TO TURN ON THE VALVE WHEN THE WORK IS COMPLETE.

•PB #10 (push button #10) “SPRINKLER RESET” button is for resetting the sprinkler circuit once the temperature in the tumbler (basket) has dropped below its preset trip temperature.

NOTE: Pressing the “SPRINKLER RESET” button before the tumbler (basket) temperature has dropped below its trip temperature will momentarily stop the water flow. However, the water flow will resume once the button is released.

•UV is the “UNDER VOLTAGE” detection coil of the ADG-464 MAIN DISCONNECT switch, DISC #1. It is this device that controls the automatic POWER DOWN of the dryer when the sprinkler is activated.

SPRINKLER CIRCUIT DESCRIPTION

The following information assumes that the reader has read the sprinkler component descriptions and is following the ADG-464 Ladder Diagram of the Sprinkler Circuit.

•STATE 1 - The tumbler (basket) temperature is “BELOW” SHLC (Sprinkler High Limit Controller) preset trip value. When power is applied to SHLC:

•SHLC set point will close.

•SHLC alarm will open.

•UV (under voltage) will engage.

56

Image 60

Contents ADG-464 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Service Parts Returning Warranty Cards Parts Returning Warranty PartsTroubleshooting TOC Section Safety Precautions What to do if YOU Smell GASPage SPECIFICATIONS/DIMENSIONS SpecificationsDimensions Installation Procedures Reassembly of DryerPage Page Location Requirements Internal AIR, Electric and Water Connections Page Page Page Page Page Left Drum Motor External Supply Connections Page Page Electrical Requirements Electrical RequirementsElectrical Service Specifications PER Dryer Page Fresh AIR Supply Requirements PRE START-UP Preparation for OperationRoutine Maintenance CleaningMonthly Component System Descriptions Page Page Main AIR Blower and Heat Reclaimer System Page Compressed AIR System Additives or SolventsPage Page GAS Burner and Ignition System Switch #1 Recycling Mode Page Page Page Page Page Page Page Safety Devices Level Fault Service PartsReturning Warranty Cards WarrantyReturning Warranty Parts Page Troubleshooting Power Malfunctions Possible SolutionsProbable Causes No Control Power Blue Light Off Machine Main Power Shuts Down Blue Indicator Off 2CRB Sprinkler Circuit Description Page If no, go to on Possible Solutions General Description Unless the Water Valve to the Sprinkler is ClosedBurner Controller Input Signal Components Burner IgnitionIntroduction Burner Section Input Circuit Component DescriptionLoad Door Switch DS1B Output Signal Component Description Stop Detector Relay Contact SMD noGAS Fault Message gas system only Heater Fault Message Possible Solutions Page Page AIR Fault Message HI-TEMP Fault Message Possible Solutions Drum Fault Message Page Tumbler Basket Section Electrical Malfunctions Tumbler Basket Section Electrical ComponentsFollowing is for 2-Door Models only Rear Panel Control Problems Probable Causes Possible Solutions Unload 1 Selection Probable Causes PLC OUT PIN 7 = Unload Door Open PLC OUT PIN 10 = Front UPDoor Open Problem Drum Fault Message Malfunction Probable Causes Page Front Door Switch Rear Down Switch LS2Lint Drawer Proximity Switches Base Section Electrical MalfunctionsLint Chamber Pressure Switch PS3 Tumbler Basket Tilt Problems Level FaultProbable Solutions Page Lint Screen Mechanism Problem Screen Fault Lint Chamber Air Pressure Problem AIR Fault Pendant Control Malfunctions Pendant Electrical ComponentsVerify Pendant Electrical Signals Wiring Diagram Temperature Sensing Page Temperature Measurement and Sensing Problems Circuit Wiring to the Analog Input Module MotorsMotor Actuation Problems Probable Causes Motor Protection Device DescriptionsPLC Programmable Logic Controller Error Messages Burner Controller stops heat