Miller Electric 852 manual Fuse F1, Troubleshooting, Trouble Remedy

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. A complete Parts List is available at www.MillerWelds.com

6-2. Fuse F1

Tools Needed:

3/8 in

YTurn Off power before open- ing rear access door.

 

1 Fuse F1 (See Parts List For

1

Rating)

 

Fuse F1 protects control transform- er from overload. If F1 opens, weld output and fan motor stops. Re- place F1.

Close and secure access door.

Ref. ST-800 101-C

6-3. Troubleshooting

Trouble

Remedy

 

 

No weld output; unit completely inop-

Place line disconnect switch in On position (see Section 4-14).

erative.

 

 

 

 

Check fuse F1, and replace if necessary (see Section 6-2).

 

 

 

Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 4-14).

 

 

 

Check for proper input power connections (see Section 4-14).

 

 

 

Check for proper jumper link position (see Section 4-13).

 

 

No weld output; Power switch pilot light

If using remote control, place Output (Contactor) switch in Remote 14 position, and connect remote

on; fan on.

control (see Section 4-11). If remote is not being used, place switch in On position.

 

 

 

Check, repair, or replace remote control.

 

 

 

Unit overheated. Allow unit to cool with fan On (see Section 4-2).

 

 

 

Have Factory Authorized Service Agent check control board PC1.

 

 

No weld output; Power switch pilot light

Check for proper input power connections (see Section 4-14).

on; fan off.

 

 

 

 

Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 4-14).

 

 

 

Have Factory Authorized Service Agent check SCR’s.

 

 

Unit provides only maximum or mini-

Have Factory Authorized Service Agent check control board PC1 and hall device HD1.

mum weld output.

 

 

 

Erratic or improper weld output.

Use proper size and type of weld cable (see Section 4-8).

 

 

 

Clean and tighten all weld connections.

 

 

 

Check position of Polarity selector switch (see Section 5-1).

 

 

 

Have Factory Authorized Service Agent check control board PC1 and hall device HD1.

 

 

No 115 volts ac output at duplex recep-

Reset supplementary protector CB1 (see Section 4-7).

tacle, Remote 14 receptacle.

 

 

 

No 24 volts ac output at Remote 14 re-

Reset supplementary protector CB2 (see Section 4-7).

ceptacle.

 

 

 

Fan not operating. NOTE: fan only

Check for and remove anything blocking fan movement.

runs when cooling is necessary.

 

 

 

 

Have Factory Authorized Service Agent check fan motor.

 

 

OM-222 Page 25

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Contents File Stick Smaw ProcessesDescription From Miller to You Table of Contents Standards DirectivesMarks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information − Consignes DE Sécurité − À Lire Avant Utilisation Signification des symbolesLES Décharges Électriques peuvent être mortelles LES Fumées ET LES GAZ peuvent être dangereuxLES Particules Projetées peu- vent blesser les yeux LE Soudage peut causer un incen- die ou une explosionLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Bruit peut affecter l’ouïeLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques − Definitions General Precautionary LabelInput Connection Label Nameplate Safety SymbolsElectric Shock And Airflow Label ? aManufacturer’s Rating Labels For CE Products Weee Label For Products Sold Within The EU Symbols And DefinitionsSpecifications − InstallationDuty Cycle And Overheating 200 230 380 400 440 460 575Amp Model Volt-Ampere CurvesMovement Selecting a LocationWeight Dimensions And WeightsDimensions Amp Models Turn Off power before connecting to receptacle Be careful when placing or moving unit over uneven surfacesTipping VAC Receptacle And Supplementary ProtectorsWeld Output Terminals And Selecting Cable Sizes Connecting Weld Output CablesRemote 14 Receptacle Information Connecting Remote ControlInformation To remote On/O ff sw itchElectrical Service Guide Placing Jumper Links Disconnect Device Input Power Con- nections Connecting Input PowerWelding Power Source Input Power Connections Turn Off power before connecting re- mote device Turn Off Power before reversing cables− Operation Controls Non CE ModelsRoutine Maintenance − Maintenance and TroubleshootingDisconnect power before maintaining Months Controls CE ModelsTrouble Remedy TroubleshootingFuse F1 Circuit Diagram − Electrical Diagram218 518-A − Parts List Page Page Support ServiceMiller Electric Mfg. Co Owner’s Record