Lincoln Electric 355M Manuel d'utilisateur télécharger pdf (Page 78)

TROUBLESHOOTING AND REPAIR

F-32 F-32

POWER WAVE 355M/405M

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OUTPUT RECTIFIER MODULES TEST (continued)

TEST PROCEDURE

1. Remove input power to the POWER WAVE

355M/405M.

2. Locate the output terminals on the front

panel of the machine. See Figure F.7.

3. Remove any output cables and load from the

output terminals.

4. Using the analog ohmmeter test for more

than 200 ohms resistance between positive

and negative output terminals. Positive test

lead to the positive terminal; Negative test

lead to the negative terminal. See Figure

F.8.

NOTE: The polarity of the test leads is most

important. If the test leads polarity is not cor-

rect, the test will have erroneous results.

FIGURE F.7 Machine Output Terminals

STSTAATUSTUS THERMALTHERMAL

NEGATIVE

OUTPUT

TERMINAL

POSITIVE

OUTPUT

TERMINAL

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Lincoln Electric 355M Manuel d'utilisateur Page 78