Miller Bernand 195400 Betriebshandbuch - Seite 13

Blättern Sie online oder laden Sie pdf Betriebshandbuch für Zubehör für das Schweißen Miller Bernand 195400 herunter. Miller Bernand 195400 21 Seiten.

Seite drucken

Part IV Maintenance and Repair

See pages 6 and 7 for parts lists

Disconnect gun from equipment, allow to cool, and remove

electrode from liner before servicing.

Contact Tip

Gas Diffuser

Section 1. Nozzle

A. Removal

Threaded fit nozzle can be removed by turning in a counter-

clockwise direction.

B. Service

Inspect nozzle for cracks and degradation of insulation.

Clean the nozzle as often as possible to prevent spatter

build-up which can lead to poor gas shielding or short cir-

cuiting. Replace the nozzle when loose, worn, or producing

erratic gas shield.

C. Installation

Replace threaded fit nozzle by threading in a clockwise direc-

tion. Nozzle body is used to secure contact tip.

Section 2. Contact Tip

Bernard has designed Centerfire™ Contact Tips to allow rapid installa-

tion and adjustment.

A. Removal

Cut electrode and remove all burrs. Remove threaded fit

nozzle by turning in a counterclockwise direction. Pull the

Centerfire Contact Tip from gas diffuser.

FIGURE #1

Nozzle

Section 3. Gas Diffuser

Section 4. Neck

B. Service

To extend contact tip life, reface front of contact tip and

clean the bore. Contact tips may be rotated in gas diffuser/

head socket providing additional wear surface and extending

the service life of the product.

C. Installation

Replacement is accomplished by cutting electrode and

removing all burrs. Slide contact tip over electrode into gas

diffuser and replace threaded fit nozzle by threading in a

clockwise direction. Nozzle body is used to secure contact

tip.

A. Removal

The head may be removed with an appropriate wrench in a

counterclockwise rotation.

B. Service

Inspect head for spatter, blocked gas ports, and carburized

surfaces. Clean as often as possible. Replace with new gas

diffuser when wear prevents engagement of contact tip or

nozzle.

C. Installation

Firmly secure gas diffuser with an appropriate wrench in a

clockwise rotation, torque to 144 in-lbs. Be sure insulator

cap is in place as shown in figure #1.

A. Removal

Grasp lock nut and rotate counterclockwise, rotation will free

neck from end fitting.

B. Installation

Before installing, inspect neck and end fitting for debris,

clean if necessary. Install neck in reverse order, torque to 38

in-lbs. NOTE: Refer to Jump Liner literature for liner cut off

sizes (if used).