Lincoln Electric SVM112-B service manual Figure F.58 Test and Calibration Overlay

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F-153 F-153

TROUBLESHOOTING & REPAIR

CURRENT CALIBRATION (continued)

FIGURE F.58 – TEST AND CALIBRATION OVERLAY

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PROCEDURE

1.Install the Test and Calibration Overlay and apply power to the machine. See Figure F.58.

2.Press the Manual Procedure Entry Key (64). The machine should display the following:

PROCESS 1 SETUP

1-0

3.Toggle the Arrow Keys (100 and 101) until the display reads:

PROCESS 1 SETUP

1-6

4.Activate the external trigger device. (K941-1) and load the machine.

WARNING

The machine’s output terminals will be electri- cally “HOT” when the trigger circuit is activated.

5.Adjust the potentiometer until the reference (external ammeter) reads 304 amps +/- 1.0 amps. The load voltage should be greater than 15 volts but less than 35 volts.

6.Remove power to the machine.

7.If necessary re-install the control board.

8.Replace the machine case parts.

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POWER WAVE 450