Section TOC

Master TOC

F-22

TROUBLESHOOTING & REPAIR

F-22

 

FAN MOTOR TEST (CONTINUED)

Return to

Return to Section TOC

TOC

Return to

Return to Master TOC

TOC

1.Remove the input power to the machine.

2.Perform the Case Cover Removal Procedure.

3.Locate the fan terminals on the Control board on terminal strip 1 and terminal strip 2. See Wiring Diagram. See Figure F.5.

4.Turn machine on to conduct voltage test.

WARNING

ELECTRIC SHOCK can kill.

Have an electrician install and service this equipment. Turn the input power OFF at the fuse box before working on equipment. Do not touch electrically hot parts.

Turn the machine OFF between each test.

------------------------------------------------------------------------

5.On 120 Volt Machines, at the FAN terminals on ter- minal strip 1 and 2, there should be 120 VAC. See Wiring Diagram.

6.On 230 volt machines, at the FAN terminals on ter- minal strip 1 and 2, there should be 230 VAC. See Wiring Diagram.

7.If the correct voltages are not there, check for cor- rect input voltages at terminal strip 1 and 2 on ter- minals 1 and 6. See Wiring Diagram. See Figure F.5.

8.If correct voltages are at terminals 1 and 6 and not at FAN terminals, possible faulty Control Board.

9.If the correct voltages are at the FAN terminals, then check for correct voltages at the fan motor. See Wiring Diagram.

10.If the correct voltages are at the fan motor, possi- ble bad motor.

11.the correct voltages are at the fan motor, check for bad or broken leads or terminals.

Return to Section

Return to Section TOC

Return to Master

Return to Master TOC

FIGURE F.5. – CONTROL BOARD LEAD LOCATION(S)

Terminal Strip 2

Terminal Strip 1

COMPACT WIRE WELDERS

Page 76
Image 76
Lincoln Electric SVM189-B service manual Figure F.5. Control Board Lead Locations