ENERSYS SCR Transformer Type Battery Charger SD3E2

Please follow these steps before removing or replacing an EPROM:

Follow these steps to remove the EPROM. (Be sure your hands are fairly clean before touching a PC board.)

3. Touch your finger to a ground to discharge static.

Return all replaced components to your service center.

Reconnect all leads exactly as they were removed.

Replace any heat-shrink tubing if any old tubing was removed.

Use the wiring diagrams in the back of this manual to help identify wires connected to the transformer.

Remove the AC input wires from the 3 terminal input blocks.

The snubber assembly consists of a series resistor and a capacitor.

Verify that the mounting wire is sound--properly screwed on and not broken

Verify that the Snubber assembly is not burned, broken, or smoking.

To test the snubber assembly, disconnect a mounting wire and check for no continuity

Replace if your meter reads less than 200k ohms.

Sign off on the snubber assembly test

Disconnect the battery and AC power before starting the test.

You will be testing the diode to see if it is shorted.

Three phase input wires to the SCR/Diode Blocks disconnected

Meter's negative lead connected to the input connection of the SCR/Diode Block

Meter's positive lead connected to the - bussbar

Warning: Disconnect the battery before testing the control transformer.

You will be testing the wiring of the control transformer for continuity.

Lugs 1 through 5 are located at the front of the control transformer, with lug 1 at the top.

Lugs 6 through 10 are located in the back, with lug 10 at the top.

Enter the lugs specified in the ID Board.

Enter the measurement across the lugs.

Does the measurement correspond with what is listed in the table?

Did you replace the control transformer if the measurement did not correspond?

Sign off on the control transformer test.