Lincoln Electric IM557 manual Idle Roll Pressure Setting, Gas Guard Regulator Setting

Page 27

B-9

 

OPERATION

B-9

 

 

 

 

Idle Roll Pressure Setting

 

 

The idle roll pressure is set at the factory, backed out three turns from full pressure on 4-roll feeders. This is an approximate setting. For small wire sizes and aluminum wire up to 9 or 10 turns out may be required to minimize “birdnesting”. The optimum idle roll pres- sure varies with type of wire, surface condition, lubri- cation, and hardness. The optimum idle roll setting can be determined as follows:

1)Release the incoming idle roll pressure arm, then press end of gun against a solid object that is elec- trically isolated from the welder output and press the gun trigger for several seconds.

2)If the wire “birdnests”, jams, or breaks at the drive roll, the idle roll pressure is too great. Back the pressure setting out 1/2 turn, run new wire through gun, and repeat above steps.

3)If the only result is drive roll slippage, disengage the gun locking nut, and pull the gun cable forward about 6” (150mm). There should be a slight wavi- ness in the exposed wire. If there is no waviness, the pressure is too low. Increase the pressure set- ting 1/4 turn, reconnect the gun, tighten the locking nut, and repeat the above steps.

4)After the outgoing pressure is set, determine how many turns away from full pressure the setting is. Set both idle roll tensions to this setting. Engage both idle rolls before welding. In most applications, best wire feeding will occur when both idle roll pressures are set the same.

Gas Guard Regulator Setting

1)With the gas supply shut off, the Gas Guard regu- lator flow adjusting key should be set to maximum (full clockwise) which is rated to be 60 SCFH (28 lts/ min).

2)Adjust gas supply flow rate for a level higher than will be required, then adjust Gas Guard flow adjusting key counterclockwise to the desired gas flow rate.

SYNERGIC 7 & 7H

Image 27
Contents Synergic 7 and 7H Mar ‘95 SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionMar. ‘93 Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Size & Weight Without Wire Stand With K377 Wire Stand InstallationTechnical Specifications Synergic 7 and 7H Type K631-3 K631-4 Wire Speed RangeRecommended Processes and Equipment Standard FeaturesWire Drive Features General DescriptionControl Features RUN-IN WFS Y P a D a N D D I S P L a Y DescriptionElectric Shock can kill Safety PrecautionsAluminum Wire Sizes Procedure to Install Drive Roll and Guide TubesWire Feed Drive Roll and Guide Tube Kits Steel Wire Sizes RollGmaw Guns Gun Cable Connection Wire Feeder to GunGun and Cable Assemblies For GMA Gun CablesCylinder may explode if damaged Shut off shielding gas supply when not in useSynergic 7 Water Connections for Water- Cooled Guns Gmaw Shielding GasElectrical Installation Warning 60% Duty Cycle Up to 100 ft Length 30m Optional Features InstallationWork Cable CurrentInstallation Operating Instructions Mode SelectionPower-Down Save OperationDisplay Control Keys Preset voltage/trim may be adjustedCold Feed Memory Ammeter Selection Step Trigger Mode SelectionDual Procedure Remote Control K1449-1 Procedure Selector SwitchFigure B.1a Threaded Locking Collar Wire LoadingInnershield Coils Coil tie wires To remove the wire reel from its shaft, graspKnob so it seats into the shaft when released Cut the tie wires at this timeREADI-REELS a K438 READI-REEL Adapter Must be Used Feeding ElectrodeGas Guard Regulator Setting Idle Roll Pressure SettingWire Reel Changing Wire Feed Overload ProtectionMaking a Weld Grounding Lead Protector Explanation of Prompting Error MessagesOptional Features Accessories60 LB .2 KG Coil Adapter K1504-1 Universal Wire Reel Stand K1524-1READI-REEL Adapters K179 type vacuum unit not recommended for use with Synergic MISC. OptionsRoutine Maintenance MaintenanceMaintenance Avoiding Wire Feeding ProblemsLocate Problem Symptom 1TROUBLESHOOTINGE-1Troubleshooting Replace WeldingIng and gas flow rate is proper IngConnector J1 on control PC No control of wire feedTers on wire feeder display do not Defective wire feed motor tach orOr there may be a problem with Wire feed motor runs and solenoid Power source is defectiveWiring harness or Control PC Speed does not change when Run-in and weld speeds are setRemote control kit must be used Meters on wire feeder display doNot match those on power Problem with wire feeder harnessTroubleshooting Wiring harness, or Control board Dure switch Be connectedBetween procedures a and B Display. If not, refer to ProblemFaulty communication between Local dual procedure switchDual procedure switch is used to Switch between procedures aTroubleshooting HXX Procedure for Replacing PC Boards Electric Shock can kill Wiring Diagram Synergic DiagramsElectric Shock Can Kill Input Connection DiagramW I R E R E E L S T a N D Dimension PrintSynergic 7 & 7H Synergic 7 & 7H Synergic 7 & 7H Synergic 7 & 7H Precaucion Warnung