Thermal Comfort 3000 manual Section General Information, Important Safety Precautions

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SECTION 1:

GENERAL INFORMATION

1.01 Notes, Cautions and Warnings

Throughout this manual, notes, cautions, and warnings are used to highlight important information. These high- lights are categorized as follows:

NOTE

An operation, procedure, or background informa- tion which requires additional emphasis or is help- ful in efficient operation of the system.

CAUTION

A procedure which, if not properly followed, may cause damage to the equipment.

WARNING

A procedure which, if not properly followed, may cause injury to the operator or others in the oper- ating area.

1.02 Important Safety Precautions

WARNINGS

OPERATION AND MAINTENANCE OF PLASMA ARC EQUIPMENT CAN BE DAN- GEROUS AND HAZARDOUS TO YOUR HEALTH.

Plasma arc cutting produces intense electric and magnetic emissions that may interfere with the proper function of cardiac pacemakers, hearing aids, or other electronic health equipment. Per- sons who work near plasma arc cutting applica- tions should consult their medical health profes- sional and the manufacturer of the health equipment to determine whether a hazard exists.

To prevent possible injury, read, understand and follow all warnings, safety precautions and in- structions before using the equipment. Call 1-603- 298-5711 or your local distributor if you have any questions.

GASES AND FUMES

Gases and fumes produced during the plasma cutting process can be dangerous and hazardous to your health.

Keep all fumes and gases from the breathing area. Keep your head out of the welding fume plume.

Use an air-supplied respirator if ventilation is not adequate to remove all fumes and gases.

The kinds of fumes and gases from the plasma arc depend on the kind of metal being used, coatings on the metal, and the different processes. You must be very careful when cutting or welding any met- als which may contain one or more of the follow- ing:

Antimony

Chromium

Mercury

Arsenic

Cobalt

Nickel

Barium

Copper

Selenium

Beryllium

Lead

Silver

Cadmium

Manganese

Vanadium

Always read the Material Safety Data Sheets (MSDS) that should be supplied with the material you are using. These MSDSs will give you the information regarding the kind and amount of fumes and gases that may be dangerous to your health.

For information on how to test for fumes and gases in your workplace, refer to item 1 in Subsection 1.03, Publications in this manual.

Use special equipment, such as water or down draft cutting tables, to capture fumes and gases.

Do not use the plasma torch in an area where com- bustible or explosive gases or materials are located.

Phosgene, a toxic gas, is generated from the vapors of chlorinated solvents and cleansers. Remove all sources of these vapors.

ELECTRIC SHOCK

Electric Shock can injure or kill. The plasma arc process uses and produces high voltage electrical energy. This electric energy can cause severe or fatal shock to the op- erator or others in the workplace.

Never touch any parts that are electrically “live” or “hot.”

Wear dry gloves and clothing. Insulate yourself from the work piece or other parts of the welding cir- cuit.

Repair or replace all worn or damaged parts.

Extra care must be taken when the workplace is moist or damp.

Date: 6/22/99

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GENERAL INFORMATION

Image 5 Contents
October 6 MerlinPage Table of Contents Table of Contents Section General Information Important Safety PrecautionsFire and Explosion PublicationsAvertissement Precautions De Securite ImportantesChoc Electrique Bruit Documents De ReferenceGeneral Information Declaration of Conformity National Standard and Technical SpecificationsLabor Statement of WarrantyService Responsibilities General Service PhilosophySection Introduction Scope Of ManualIntroduction General Description Specifications & Design FeaturesSection Introduction Description Theory Of Operation Input and Output PowerPlasma Arc Cutting and Gouging Pilot ArcOptions And Accessories Plasma/Secondary Gas Control Hour/Counter MetersIntroduction Section Service Troubleshooting DiagnosticsPeriodic Inspection & Procedures Coolant Level and Conductivity System TheoryDraining Coolant Circuit DescriptionSwitching Control PC Board Switch-Mode Power Supply OperationRemote Control Logic PC Board FunctionsTroubleshooting and Repair Troubleshooting GuideAdvanced Troubleshooting Standoff ControlHow to use this Guide Temp indicator on red Fuse blown at disconnect when primary power is connectedCoolant conductivity indicator off Coolant indicator offWeak or sputtering pilot No pilot arc Pilot indicator on PCR energizedVoltage Selection PC Board Check Test ProceduresEnable Circuit Tests Diode Check Blown Fuse F1 or F2Motor Control Contactor Check MC1 or MC2 Pressure Sensing Circuit Thermal Sensing Circuit CheckGas Solenoid Circuits Coolant Flow Sensor Circuit CheckRefer to Appendix IX for Start Circuit Diagram Power Supply Start CircuitRemote Control Start Circuit Q1 Location Switching Control Check Q1High Voltage is present Pilot Circuit CheckTip Drag Circuit Current Control, Display and CSD checksFront Panel Current Control Remote Current ControlCorner Slowdown CSD Volt Bias TestOK-To-Move Tests Pilot Resistor AdjustmentRefer to Appendix XII for OK-To-Move Circuit Diagram Service Troubleshooting Anti-Static Handling Procedures Section Repairs & Replacement ProceduresParts Replacement General Information ProcedureHandle Replacement External Parts ReplacementLeft/Right Side Panel Replacement Top Panel ReplacementFront Panel/Chassis Parts Replacement Access Panel Parts ReplacementRear Panel Parts Replacement Voltage Selection PC Board Replacement Three-Phase Contactor ReplacementGas Solenoid Assembly Replacement Secondary Water Solenoid Valve Assembly ReplacementConductivity Sensor Assembly Replacement Coolant Tank ReplacementFlow Switch Assembly Replacement Secondary Water Check Valve Replacement Base Assembly Parts ReplacementDC Inductor L2 Assembly Replacement 29KVA Transformer T1 Assembly ReplacementMain Contactor W1 or W2 Replacement Upper Chassis Parts ReplacementMotor M1 Assembly Replacement Pump Assembly ReplacementBxbx Do not damage Heatsink Auxiliary Transformer T3 Assembly ReplacementCoolant Pressure Gauge Replacement Pressure Gauge ReplacementPressure Switch Replacement Plasma or Secondary Gas Input Fitting ReplacementPlasma or Secondary Regulator Assembly Replacement Fuse F1 and F2 ReplacementControl Logic PC Board Assembly Replacement Switching Control PC Board Assembly ReplacementSecondary Gas Check Valve Replacement Main Heatsink Assembly Parts ReplacementAmp STR. Diode Replacement Diodes can overheat if not properly installedAmp STR Diode Replacement Relay ReplacementAmp REV Diode Replacement Hose Assembly Replacements Drain the coolant from the Coolant Tank per Sec- tion 4.02-F Replacement Procedures Replacement Procedures Parts List Breakdown Section Parts ListsOrdering Information ReturnsItem # Qty Description Catalog # External Power Supply Replacement Parts ListAccess Panel Replacement Parts Front Panel/Chassis Replacement Parts 01217 Rear Panel Replacement Parts 1323 Base Assembly Replacement Parts 00894 Upper Chassis Replacement Parts 01226 Main Heatsink Assembly Replacement Parts 00971 Power Supply Options And Accessories 01218 Parts Lists Lts Appendix I Input Wiring RequirementsAction Appendix II Sequence of Operation Block DiagramSystem With Standoff Control SC11 And Gas Control GC3000 Appendix III Typical Mechanized System Cable ConnectionsRemote Cables Appendix V CNC Interface Appendix VI 120 VAC Circuit Diagram Appendix VII Ladder Diagram 15 VDC Appendix Viii Signal Flow Block Diagram Appendix IX Start Circuit Diargram Appendix X Current Control / Display Circuit Diagram Appendix XI CSD Corner Slowdown Circuit Diagram OK OUT Appendix XII OK-TO-MOVE Circuit DiagramBlock Xiii HoseAppendix XIV System Schematic Appendix Weekly or Every 30 Arc Hours Daily Operational Checks or Every Six Arc HoursSix Months or Every 720 Arc Hours Twelve Months or Every 1500 Arc Hours