Lincoln Electric SVM114-C Test Procedure, Drive Motor Lead IN-LINE Connector Hall Effect Module

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F-24 TROUBLESHOOTING AND REPAIR F-24

FIGURE F.12 – HALL EFFECT MODULE AND DRIVE MOTOR LEADS IN-LINE CONNECTORS.

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DRIVE MOTOR

LEAD IN-LINE

CONNECTOR

HALL EFFECT MODULE

LEAD IN-LINE

CONNECTOR

TEST PROCEDURE

1. Open the case door. Remove the wire reel by removing the retaining collar. See Figure F.5.

2. Remove the screws holding the control box cover in place and remove the control box cover. See Figure F.5.

3. For codes 10148 and above, separate the in- line connector (containing the drive motor leads) located behind the mylar insulation. Be sure to identify the correct in-line connector. There is also an in-line connector for the hall effect module behind the mylar insulation. See Figure F.12.

For codes 9812 and below, remove the two motor leads 539(white) and 541(black) from the control PC board. See Figure F.10.

4.Apply a variable DC voltage to the drive motor from lead 541(black)(+) to lead 539(white)(-).

5.When the supply voltage is varied from 2 to 23 VDC, the drive motor speed (RPM) should vary accordingly. If the motor does not run or vary in speed, the motor, gearbox or motor brushes may be faulty. Check or replace.

6.Check the resistance between each of the motor leads [541(black) and 539(white)] and the motor case. The resistance should be very high (at least 500,000 ohms). If the resistance is low, the motor is grounded to the motor case and should be replaced.

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LN-25™