Bake-Out, Pwht Post-Weld Heat Treat | Miller Electric ProHeat 35

6-4-1-2. Bake-Out

The bake-out process allows the operator to program a temperature and soak time as well as a cooling rate from bake-out if desired. When this process is selected, the following screen appears on the display:

Bake-Out Screen

Mode......: Bake−Out

Control TC:>1

Soak Temp.: 600 Soak Time: 01:00:00

Cool Temp.: 200 Cool Rate: 600 _/Hr

The default position of the cursor is next to Control TC. Press the Increase

or Decrease button to select the number of control

thermocouples to be used for the program. Selections are as follows: 1, 1,2, 1,2,3, or 1,2,3,4. TC1 MUST always be a control thermocouple. TC2 thru TC4 can be used for controlling or monitoring. When a thermocouple is selected as control, the LED adjacent to the seven-segment display illuminates.

Use the Cursor

button to move the cursor to the desired selection (Soak Temperature, Soak Time, Cool Temperature, or Cool Rate), and

press the Increase

or Decrease button to change the value to the desired setting.

.The minimum and maximum soak temperature settings for bake-out are 0 and 10005 F(−18 and 5385 C). The minimum and maximum soak times

are 0 and 1000 hours. The minimum and maximum cool rates are 10 and 9999 5/hr. When the system is utilizing air-cooled blankets, the maximum temperature setting is 4005 F(2045 C). If the program setting is above 4005 F (2045 C), the following screen will appear on the LCD display when the Run button is pressed:

Maximum Temperature Message Screen

Cannot enter Run mode

Programmed temperature settings

exceed air cooled limits

(400 _F, 204 _C)

6-4-1-3. PWHT (Post-Weld Heat Treat)

The post-weld heat treat process allows the operator to program a post-weld heat treat where ramp temperature (on increase and decrease) and ramp rates are the same. When this process is selected, the following screen appears on the display:

PWHT Screen

Mode......: PWHT

Control TC:>1,2

Ramp Temp.: 200 Ramp Rate: 600 _/Hr

Soak Temp.: 400 Soak Time: 01:00:00

OM-222 166 Page 27

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Miller Electric ProHeat 35 manual Bake-Out, Pwht Post-Weld Heat Treat

Contents

OM-222 166K 2007−11 Processes DescriptionFile Induction Heating From Miller to You Table of Contents Routine Maintenance Blowing Out Inside Of Unit − MaintenanceLimit Conditions Limit Condition Codes Fault Conditions EMF Information Directives StandardsDecstat1/07 Page Induction Heating Hazards Symbol UsageElectric Shock can kill Fumes and Gases can be hazardous California Proposition 65 Warnings About Implanted Medical Devices Principal Safety Standards EMF Information − Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereux LE Chauffage PAR Induction peut provoquer des brûlures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessures Proposition californienne 65 Avertissements Principales normes de sécurité Information EMFEn ce qui concerne les implants médicaux − Definitions Power before working on Shown by the symbolsAre possible hazards as Kill Weee Label For Products Sold Within The EU Rating Label For CE Products Symbols And Definitions − InstallationSpecifications I1max Selecting a Location Do not move or operate unit where it could tipTipping Movement Location And Airflow Phase Input Voltage Electrical Service Guide50 Hz Three Min Grounding Conductor Size In AWG Welding Power Source Input Power Connections Connecting 3-Phase Input Power For 460/575 Volt ModelsDisconnect Device Input Power Connections GND/PE Earth Ground Connecting 3-Phase Input Power For 400/460 Volt Models Power Source Output Connections Remote 14 Receptacle RC14 Information and Connections Remote 14 Socket InformationSocket Socket Information Signal Common Temperature Recorder Socket InformationSocket No Socket Information Unused Receptacles Plug Secondary Insulation ProtectionHandle Magnet Workpiece Use handle to place magnet on the workpiece Locating Thermocouples Volt AC Duplex Receptacle And Supplementary Protector Other end is fitted with a 2-pin type K connector Attaching Welded Thermocouples Do not weld thermocouples while connected to power source Placing Temperature Probe Using Contact Thermocouples Controls − Components and Controls Safety Equipment − Setup and OperationPower Source/System Setup System Description OM-222 166 Mode....... Preheat Control TC Temperature Soak Time Temperature-Based ControlDecrease button to change the value to the desired setting Programming Pwht Post-Weld Heat Treat Bake-Out Custom Program Soak Parameters End Custom ProgramType.......Step 600 Number OM-222 166 Ramp Temperature 600 Ramp Rate 600 /Hr Soak Function SoakNumber End Function Manual Control Typical 5-Segment Custom ProgramSoak at 1250 degrees F for a period Run Status Temperature Based ControlTC5 Target Temp −−−− TC6 Countdown.. −−−−−− Preheat, Bake-Out And Pwht Run Status Screen Parameters Power TC5 Current TC6 Voltage Frequency KHzCooler Cooler cannot be turned off while output is on Must be running to enter Hold mode Real-Time OperationProgram run is initiated, the Run Button. a change of program parameters Power Source Output Characteristics System Operating CharacteristicsAir Cooled Output Liquid Cooled Output Routine Maintenance − MaintenanceDisconnect power Before maintaining Servicing Hazards − Safety Precautions for Servicing California Proposition 65 Warnings Operator Interface Indicators − Diagnostics & Troubleshooting Limit Condition Codes Limit ConditionsRun Status Limit Condition Additional Information Fault Conditions Fault Condition CodesFault Condition Additional Information System Diagnostic Screens Off Cable1 LQD DIAG1 OutI1 Cable2 LQD OutI2 ClntFR 0.75 GPMClrSts Flowing Therm2 Therm1Therm3 VBus Turn Off welding power source, and disconnect input power Removing Wrapper and Measuring Input Capacitor VoltageTools Needed 16, 3/8 Blowing Out Inside Of Unit Material Thickness Reference Chart Circuit Diagram − Electrical Diagram 218 057-G See Figure 11-313 11-2 − Parts List Front Panel Rear Panel Base w/Components Top Windtunnel Capacitor Assembly Right Windtunnel 229 Right Windtunnel 400 V Model Only 208 Left Windtunnel PLG14 10. Hermaphroditic Blank Plug Assy SOCKET/WRENCH Selection Table Standard Metric OM-222 166 Service Your distributor also givesSupport Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s