Miller Electric 625 manual Troubleshooting Help Aids, Troubleshooting Power Source

Page 34

8-4. Troubleshooting Help Aids

1 Stud Count LED

2 Ready LED

3 Output LED

1

2

3

 

 

 

803 618-B

 

 

 

 

 

 

 

 

Front Panel

Ready LED Status

Possible Symptom

Remedy

Error Indication

 

 

 

 

 

 

 

Normal/None

On

No problem

N/A

 

 

 

 

HELP 1

Off

Malfunction in the primary power cir-

Contact a factory authorized service

 

 

cuit.

agent.

 

 

 

 

HELP 2

Off

Malfunction in the thermal protections

Contact a factory authorized service

 

 

circuitry.

agent.

 

 

 

 

HELP 3

Off

Unit has overheated.

Unit has shut down to allow the fan to

 

 

 

cool it (See Section 3-2). Operation

 

 

 

will continue when the unit has cooled.

 

 

 

 

HELP 4

Off

Trigger circuit is closed when unit was

Open trigger circuit and cycle power.

 

 

powered on.

 

 

 

 

 

HELP 5

Off

The unit has sustained an Open Circuit

Cycle power. Apply a welding load. If

 

 

Voltage for more than 10 seconds.

problem persists, contact a factory au-

 

 

 

thorized service agent.

 

 

 

 

HELP 6

Off

Input voltage is either under/low volt-

Unit has automatically shut down. Op-

 

 

age or high/over voltage.

eration will continue when input voltage

 

 

 

is within an acceptable limit. Have an

 

 

 

electrician check the input voltage.

 

 

DC bus voltage imbalance.

If input voltage is correct, contact au-

 

 

 

thorized factory service agent.

 

 

 

 

8-5. Troubleshooting - Power Source

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trouble

 

Remedy

 

 

 

 

 

No weld output; unit completely inop-

Place line disconnect switch in On position (see Section 4-2).

erative.

 

 

 

 

 

 

 

 

 

 

Check and replace line fuse, if necessary, or reset circuit breaker (see Section 4-2).

 

 

 

 

 

 

 

 

Check for proper input power connections (see Section 4-2).

 

 

 

 

 

No weld output.

Input voltage outside acceptable range of variation (see Section 4-2).

 

 

 

 

 

 

 

 

Unit overheated. Allow unit to cool with fan On (see Section 3-2).

 

 

 

 

 

Erratic or improper weld output.

Use proper size and type of weld cable (see Section 4-3).

 

 

 

 

 

 

 

 

Clean and tighten all weld connections.

 

 

 

 

 

OM-216 244 Page 30

 

 

Image 34
Contents Description OM-216 244JProcess File Stud Welding SWFrom Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaques− Introduction SpecificationsDuty Cycle And Overheating Selecting a Location − Installation Power SourceDimensions And Weight LocationInput Voltage Electrical Service GuideHz Three Phase Min Grounding Conductor Size In AWGARC Welding can cause Electromagnetic Interference Turn off power before connecting to weld output terminalsWeld Output Receptacles And Selecting Cable Sizes Output ReceptaclesConnecting 3-Phase Input Power = GND/PE Earth Ground Tools NeededRack Mounting Circuit BreakerPin Receptacle Information Socket InformationChuck Installation − Installation Stud GUNChuck Removal Foot Installation Foot and Leg SetupFerrule Grip / Spark Shield Removal and Installation Leg InstallationConnecting Control Cable Connecting Stud Gun and Work Clamp to Power SourceConnecting Weld Cable and Work Ground Cable Foot AlignmentPlunge Plunge AdjustmentStud Welding Adjusting Lift Adjusting Stud LiftLIft Adjustment Table Measuring LIft− Operation Power Source Front Panel ControlsMaterial Thickness Reference Chart Select TIME/AMP Adjustment Time/Amperage ControlXxxx Ready− Operation Stud GUN Stud Welding ProceduresStud Gun Tool Functions Recommended Settings Welding SequenceDo not remove case when blowing out inside of unit − Maintenance & TroubleshootingBlowing Out Inside Of Unit OM-216 244 Maintenance Steps Maintenance Procedures for Stud GunWhen is Maintenance Required? Disassembly / Assembly ProceduresTools Needed OM-216 244 Troubleshooting Help Aids Troubleshooting Power SourceBut no weld Troubleshooting Stud GunFree play OM-216 244 − Electrical Diagrams Circuit Diagram For 460/575 Volt Models− Parts List for Power Source Parts AssemblyDia Part Description Quantity Mkgs 207 SOCKET/WRENCH Selection Table Standard Metric − Parts List for Stud GUN 217 Plunge Dampener Soft Standard W/Dampener Model Table For Foot and Legs − Options and AccessoriesPlunge Dampener Table For Chucks and GripsWork like a Pro Material Thickness Gauge Service SupportOwner’s Record Miller Electric Mfg. Co