ENERSYS SCR Transformer Type Battery Charger SLT2

Disconnect the battery and AC power before starting the test.

Disconnect the three phase input wires to the SCR/Diode Block.

Set the meter to its X1 scale or diode scale.

Connect the meter's negative lead to the input connection of the SCR/Diode Block.

Connect the meter's positive lead to the - bussbar.

Enter the reading from the meter. If using an analog meter, it should read close to 0 ohms. If using a DVM, it should read a .7V drop on the diode scale.

Reverse the wires on the meter.

Enter the reading from the meter. The needle should not move on the analog scale (measurement of infinity). The DVM should not get a reading.

Check if the SCR/Diode Block is shorted. It is shorted if the meter measures zero current for both directions (polarities).

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?

Replace the control transformer if the measurement does not correspond.

Sign off on the control transformer test.

Please follow these steps before testing the ID board:

Using the following table, test the pins on the ID board.

If your measurements are different than those in the table, replace the ID board.

Measure the resistance across pins 1 and 2 on connector J14 of the PC board. You should measure k ohm resistance.;

Return all replaced components to your service center.

The following sections explain how to replace each component. After replacing a component, be sure to:

1. Reconnect all leads exactly as they were removed,

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

Please follow these steps before removing or replacing any component:

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.