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DM-II Drying Monitor
What is the DM-II Drying Monitor?
The DM-II Drying Monitor is a patented instrument that is integrated into your
dehumidifying drying system. The DM-II monitors the drying process as it occurs
within the drying hopper. The DM-II can be programmed to alert the operator if
the drying process deviates from a pre-determined and programmed range of dry-
ing parameters established by the operator.
Typical Applications
The DM-II is ideal for applications that require strict control of the drying process
to meet product quality specifications. The DM-II can also aid in the prevention of
part rejects through early identification of potential drying problems.
The DM-II will alert the operator, through a passive alarm shown on the control
and on a light tower located on the top of the dryer, that one of these common dry-
ing problems may exist.
A change in the temperature profile within the drying hopper.
Loss of air flow through the drying hopper.
A reduction or loss of drying time at the selected and programmed drying
temperature.
Appendix l AA-1
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Sommario

Pagina 1 - Typical Applications

DM-II Drying MonitorWhat is the DM-II Drying Monitor?The DM-II Drying Monitor is a patented instrument that is integrated into yourdehumidifying dryin

Pagina 2 - RTD Sensor Positions in the

AA-10 l AppendixSetting Up Your DM-II - The BasicsThe DC2 control on your dryer ships with the drying monitor software installed, but all of the funct

Pagina 3 - Unpacking the Boxes

Setting the Process TemperatureSetpoint on a Central DryerIf you are using a central dryer, you will need to set the process temperature on theHopper

Pagina 4 - Specifications: DM-II Probe

AA-12 l AppendixSelecting the Low Temperature RTDSCREEN B (DM-II LOW ALARM SELECT)This is the DM-II low alarm select screen. On this screen, you will

Pagina 5 - Installing the DM-II Probe

Appendix l AA-13DM LO ALARM SETPOINTSET 150°FSetting the Low Alarm SetpointSCREEN C (DM-II LOW ALARM SETPOINT)1 This screen displays an automaticall

Pagina 6 - Mounting Method 1

Getting the Most from Your DM-IIThis simple overview provides an example of how the DM-II works. Detailed instructions for installation and operation

Pagina 8 - Mounting Method 3

AA-16 l AppendixTIP: For more information on screen navigation refer to the control functionflow charts located in this appendix.✒NOTE: See page AA-12

Pagina 9 - (continued)

A ppendix l AA-17NOTE: You will need to know thebulk density of your material to cal-culate your drying hopper volumein cubic feet (ft3). See page A

Pagina 12 - AA-12 l Appendix

AA-2 l AppendixHow the DM-II WorksThe DM-II monitors the vertical temperature profile of the material in thedrying hopper. The DM-II's six temper

Pagina 14 - AA-14 l Appendix

Appendix l AA-21DM-II Series Control FunctionsDrying monitor functions are values that you can set or monitor in the Screen Titleand Status Display

Pagina 15 - Appendix l AA-15

AA-22 l A ppendixPOWER ONCONAIR CP100CV00.06.2 DV00.09.83 SEC DELAYMONDAY7/22/2003 07:59 AM3 SEC DELAYPROCESS TEMPERATUREAct 140˚F

Pagina 16 - AA-16 l Appendix

A ppendix l AA-23DRYER MAIN MENUSTAT SETUP DIAGDRYER STATUSPROC REGEN OTHERDRYER OTHERSTATUS SCREENSPANEL INSIDE TEMPACT 100˚FDM T6 TOPACT 150 F

Pagina 17 - A ppendix l AA-17

SETUP PROCESSPROC REGEN OTHERSETUP PROCESSOTHER SCREENSSUNDAY STOP TIMEOFF 8:00 PMScreen ReferencesFrom Dryer ControlFlow ChartDM T6 TOPAC

Pagina 18 - AA-18 l A ppendix

A ppendix l AA-25DRYER SETUP OTHEROPT INSP COM PWDRYER SETUP OPTIONSINFORMATION SCREENSDEWPOINT CONTROLINSTALLED EDITDRYING MONITORINSTA

Pagina 19 - A ppendix l AA-19

AA-26 l AppendixScreenSCREEN A Dryer Status ScreensSCREEN BLow Alarm SelectSCREEN CLow Alarm SetpointDM T6 TOPACT 150°FDM LO ALARM SELECTTEMPERATURE

Pagina 20 - AA-20 l Appendix

Appendix l AA-27FunctionControl Function Descriptions(continued)ScreenSCREEN DLow Alarm Offset SCREEN ELow Alarm Band SCREEN FLow Alarm DelayDM LO A

Pagina 21 - Control Function Flow Charts

AA-28 l AppendixFunctionControl Function Descriptions(continued)This is the upper end of the LowTemperature Alarm Band.The Supervisor Password is re

Pagina 22 - Main Menu/Display List

Appendix l AA-29FunctionControl Function Descriptions(continued)Screen M is used to set the ProcessTemperature Setpoint to match the temper-ature se

Pagina 23 - A ppendix l AA-23

A ppendix l AA-3Unpacking the BoxesThe DM-II comes in two or more shipping containers, depending on the optionsordered. The containers should inclu

Pagina 24 - NOTE: All other screens

Maintenance ChecklistThe DM-II requires little maintenance. We recommend the following mainte-nance schedule and tasks.• Whenever you change hoppers❒

Pagina 25

Appendix l AA-31TroubleshootingAlarmsAll DM-II alarms are passive and will not cause the dryer toshutdown.The amber light on the stack will be on.1

Pagina 26 - Function

Passive AlarmsIf the amber Acknowledge Alarm LED is blinking, the alarm is a passive alarm.The dryer continues to operate, but this problem could prev

Pagina 27

Appendix l AA-33Passive Alarms (continued)ProblemDrying Monitor LowTemperature Alarm (DM Low Temp) - Once thetemperature at the RTD select-ed in Scr

Pagina 28

ProblemDrying Monitor RTDIntegrity Alarm - This alarmindicates that one or more ofthe RTD sensors within theDrying Monitor probe havefailed. The dryi

Pagina 29

8.00DOOR24 IN. HOPPER LIDDOOR10 IN. HOPPER LID4.68845.0˚DOOR14 IN. HOPPER LID4.7530.0˚30.0˚DOOR18 IN. HOPPER LID8.00DOOR33 IN. HOPPER LIDDOOR

Pagina 30 - Maintenance Checklist

Drying Hopper Volume by Model NumberDrying HopperHopper DiameterVolume (ft.³) RTD PositionRTD Distance from the topVolume up to RTD position (ft.³)CH/

Pagina 31 - Troubleshooting

Appendix l AA-37Drying Hopper Volume by Model NumberDrying HopperHopper DiameterVolume (ft.³) RTD PositionRTD Distance from the topVolume up to RTD

Pagina 32 - Solution

Drying Hopper Volume by Model NumberDrying HopperHopper DiameterVolume (ft.³) RTD PositionRTD Distance from the topVolume up to RTD position (ft.³)CH/

Pagina 33 - Passive Alarms (continued)

Appendix l AA-39Drying Hopper Volume by Model NumberDrying HopperHopper DiameterVolume (ft.³) RTD PositionRTD Distance from the topVolume up to RTD

Pagina 34

Specifications: DM-II ProbeAA-4 l AppendixAngled Probe Allows the DM-II to be used onhoppers that have insufficientclearance for correctly mountingthe

Pagina 35 - Templates

AA-40 l AppendixUnderstanding Bulk DensityBulk density is the weight of material in pellet form, where the material has a lot of freespace between p

Pagina 36

Installing the DM-II ProbeCAUTION: Hopper surfaces may be hot. Make sure the drying hopper is emptyand has cooled to room temperature before installi

Pagina 37

Mounting Method 11 Insert the probe through the coupling in the top of the drying hopper.2 Screw the fitting into the coupling. Tighten witha wrench.

Pagina 38

Appendix l AA-7Mounting Method 21 Reference the drawings at the end of this Appendix and select the drawingthat reflects your installation. Drill t

Pagina 39

Mounting Method 31 Reference the drawings at the end of this Appendix and select the drawingthat reflects your installation. Drill the appropriate ho

Pagina 40 - Understanding Bulk Density

A ppendix l AA-9Mounting Method 3 (continued)6 Place the gasket over the probe hole.7 Place the adapter plates over the gasket and securethem to the

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