Lincoln Electric 355M Manuel d'utilisateur télécharger pdf (Page 116)

OUTPUT RECTIFIER MODULES REMOVAL AND REPLACEMENT (con’t)

TROUBLESHOOTING AND REPAIR

F-70 F-70

POWER WAVE 355M/405M

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PROCEDURE

1. Remove input power to the POWER WAVE

355M/405M.

2. Using a 5/16” nut driver remove the case wrap-

around cover.

3. Perform the Input Filter Capacitor Discharge

Procedure detailed earlier in this section.

4. Locate the output diode modules located behind

the snubber board. See figure F.32.

5. Before the output rectifier modules can be

reached, the Snubber Board Removal

Procedure must be performed.

6. After the snubber board is removed, remove the

four leads connected to the modules using a 3/16”

allen wrench. These leads are #X4, #X2, #20, #40.

Note their positions for reassembly. See Figure

F.33.

7. Remove the copper plates from the tops of the

modules.

NOTE: Any instructions that are packaged with the

replacement part will supercede these instruc-

tions.

LEFT SIDE

Snubber

Board

Output Diode

Modules

FIGURE F.32 – OUTPUT RECTIFIER MODULE LEAD LOCATIONS

1 2 ... 111 112 113 114 115 116 117 118 119 120 121 ... 136 137

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Lincoln Electric 355M Manuel d'utilisateur Page 116