Lincoln Electric LN-8 SVM132-A Manuel d'utilisateur télécharger pdf (Page 75)

F-25

TROUBLESHOOTING AND REPAIR

F-25

REPAIR PROCEDURE

1. Remove input power to the LN-8

2. Using the 5/16 in. nutdriver,

remove the screws from the left

side cover assembly.

3. Using a 5/64 in. Allen wrench or

slothead screwdriver, loosen the

setscrew on the potentiometer knob

and remove the knob from the

potentiometer. Refer to Figure F.7.

4. Remove the nut and lockwasher

holding the potentiometer to the

left side cover assembly.

5. Remove the potentiometer and

insulation sheet from the inside of

the left side cover assembly.

6. Tag the three wires on the poten-

tiometer so that they can be reat-

tached in the same location from

where they were removed.

Unsolder the three wires from the

potentiometer.

7. Solder the three wires to the new

potentiometer on the correspond-

ing terminals from where they were

removed.

8. Place the new potentiometer and

insulation sheet through the cover

assembly from the inside. Ensure

that the index pin in the poten-

tiometer fits in the locating hole on

the cover assembly. Install the

lockwasher and nut on the poten-

tiometer. Tighten the nut until it is

snug.

9. Install the knob onto the poten-

tiometer so the set screw aligns

with the flat on the potentiometer.

Tighten the set screw.

10. Install the screws that secure the

left side cover assembly.

POTENTIOMETER REPLACEMENT (continued)

FIGURE F.7 – POTENTIOMETER REMOVAL

LN-8

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC

POTENTIOMETER

NUT

KNOB

LOCKWASHER

SET

SCREW

INSULATION

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 98 99

Commentaires sur ces manuels

Pas de commentaire

Lincoln Electric LN-8 SVM132-A Manuel d'utilisateur Page 75

Commentaires sur ces manuels

Produits connexes et manuels pour Système de soudage Lincoln Electric LN-8 SVM132-A