Lincoln Electric IM637-A manual Field Service Facility

Page 26

E-3

TROUBLESHOOTING

E-3

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

The Pro-Cut powers up properly but 1. Press Purge button on the front of

there is no response when the trig-

the Pro-Cut. If air does not flow,

ger is pulled and only the POWER

then:

LED is lit.

a. Auxiliary transformer may be

 

faulty.

 

b. The main gas solenoid assem-

 

bly may be faulty. Check or

 

replace.

 

c. Possible faulty Output Power

 

board.

 

d. Possible faulty Control board.

2. (check for continuity from the bulk- head connector to the molex) See Wiring Diagram.

3. Remove the handles (or barrel) of

the torch and examine all the con-

nections. Pay attention to location If all recommended possible areas of of electrode lead mounting at back misadjustment have been checked of torch head, broken trigger and and the problem persists, Contact your local Lincoln Authorized

solenoid leads.

Field Service Facility.

4.Check for proper trigger switch operation. Remove the torch cable assembly from the Pro Cut and test for continuity between 9 and 1 at the quick connect when the trig- ger switch is depressed and no continuity when the switch is not depressed. Replace the trigger switch or torch cable if defective.

5.Possible faulty Control board.

6.Possible faulty Output Power board.

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

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Contents PRO-CUTTM55 Safety Electric Shock can killPlasma ARC can injure Page Précautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Vii Three Phase Single Phase InstallationTechnical Specifications PRO-CUT High Frequency Interference Protection Safety PrecautionsSelect Proper Location Input Electrical Connections Single Phase Input Connection for 208/230/460 Volt MachinesInput Power Cord Connector Installation Frame Grounding Input Voltage Reconnection ProcedureUSE on Engine Driven Power Supplies GAS Input Connections Output ConnectionsDescription Preheat Temperature for Plasma CuttingOperation User Responsibility Operational Features and ControlsDesign Features Advantages Recommended Processes and EquipmentCutting Capability Consumable LifeControls and Settings LimitationsSafety LED Procedure Recommendations Pilot ARC DiscussionSuggestions for Extra Utility from the PRO-CUT System Accessories General Options AccessoriesMaintenance Input Filter Capacitor Discharge ProcedureRoutine Maintenance Periodic MaintenanceElectric Shock can Kill TroubleshootingHOW to USE Troubleshooting Guide Troubleshooting Field Service Facility Troubleshooting Problems Possible Recommended Symptom Check Consumable Related Safety LED Troubleshooting If the Safety LED is LIT and STEADY, perform the followingWiring 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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