Lincoln Electric IM637-A manual Troubleshooting

Page 27
2. Check air supply for oil or a great deal of water. If there is oil or a great deal of water, the air must be filtered or the machine switched to nitrogen or bottled air.
3. Make sure the air pressure is set at 70 psi.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
PRO-CUT 55
The arc starts but sputters badly.
2. Make sure the air pressure is set at 70 psi (75 psi for a 50 ft. torch).
3. Possible fault in Output Power board.
1. Check the torch consumables to be sure they are in tight, not dirty or greasy and in good shape. Replace if necessary.
When the trigger is pulled air begins 1. Check the torch consumables to be to flow, but there is no pilot arc after sure they are not dirty or greasy,
at least 3 seconds.and are in good shape. Replace the consumables if necessary. Make sure the air pressure is set at 70 psi (75 psi for a 50 ft. torch).
2. Make sure there are no kinks or restrictions for air flow in the torch cable. Replace cable as needed.
3. If a slight thump cannot be felt in the torch when the trigger is pulled, check for loose connection in the torch head and solenoid assembly.
4. With machine turned off - input power removed, and torch and consumables connected - mea- sure resistance on Output Power board between B1 and B21. If >10Ω, possible fault in torch and cable assembly.
If all recommended possible areas of
5. Possible fault in Output board. misadjustment have been checked and the problem persists, Contact The air begins to flow and there is a 1. Check the torch consumables to your local Lincoln Authorized
very brief arc that snaps out consis- be sure they are in tight, not dirty Field Service Facility.
tently with repeated trigger pulls. or greasy and in good shape. Replace if necessary.
POSSIBLE
CAUSE
PROBLEMS
(SYMPTOMS)
RECOMMENDED
COURSE OF ACTION
Observe all Safety Guidelines detailed throughout this manual

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Contents PRO-CUTTM55 Electric Shock can kill SafetyPlasma ARC can injure Page Sûreté Pour Soudage a L’Arc Précautions DE SûretéThank You Table of Contents Vii Installation Technical Specifications PRO-CUTThree Phase Single Phase Safety Precautions Select Proper LocationHigh Frequency Interference Protection Single Phase Input Connection for 208/230/460 Volt Machines Input Power Cord Connector InstallationInput Electrical Connections Input Voltage Reconnection Procedure USE on Engine Driven Power SuppliesFrame Grounding Output Connections GAS Input ConnectionsPreheat Temperature for Plasma Cutting OperationDescription Recommended Processes and Equipment Operational Features and ControlsDesign Features Advantages User ResponsibilityConsumable Life Cutting CapabilityLimitations Controls and SettingsSafety LED Pilot ARC Discussion Procedure RecommendationsSuggestions for Extra Utility from the PRO-CUT System General Options Accessories AccessoriesInput Filter Capacitor Discharge Procedure MaintenancePeriodic Maintenance Routine MaintenanceTroubleshooting HOW to USE Troubleshooting GuideElectric Shock can Kill Troubleshooting Field Service Facility Troubleshooting Problems Possible Recommended Symptom Check If the Safety LED is LIT and STEADY, perform the following Consumable Related Safety LED TroubleshootingWiring Diagram PRO-CUT 55 Codes 10475, 10476, 10571 Diagrams Wiring Diagram Codes 11013 Wiring Diagram Codes 11011, 11012, 11015 Dimension Print PRO-CUT PRO-CUT PRO-CUT Precaucion Warnung
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