Electronic Modular Control Panel II (EMCP II) For MUI Engines Caterpillar

Illustration 1	g00482185
Alarm Module (1) Plug.

For all alarm applications, the low DC volts alarm setpoint is adjusted by a potentiometer that is located under access plug (1) on the rear of the module. The adjustment range is from 8 to 38 volts. The alarm setpoint is factory set at 24 DCV.

Adjustment Procedure

1. Gain access to the rear of the ALM. It is not necessary to remove the ALM unless necessary for access. All wiring remains connected to the terminals of the ALM unless otherwise noted.

2. Remove plug (1) in order to gain access to the adjustment potentiometer. Moisture may enter the ALM when plug (1) is removed. Remove plug (1) in a dry environment. Remove the plug in an air conditioned area if the relative humidity exceeds 60%.

3. Disconnect the wires on terminals 1 and 7. Secure these wires so that the wires do not contact each other, ground or other electrical connections.

4. Connect a variable DC power supply to the alarm module (positive to terminal 1, negative to terminal 7). Set the power supply voltage to the desired low DCV alarm setpoint (between 8 and 38 volts).

5. Turn the adjustment potentiometer fully clockwise.

6. After one minute, the indicator on the ALM for low battery voltage FLASHES. Press the alarm silence switch. The low battery voltage indicator should change from FLASHING to ON CONTINUOUSLY.

7. Slowly turn the adjustment potentiometer counterclockwise until the low battery voltage indicator turns OFF.

8. Replace the plug.

9. Disconnect the variable DC power supply and reconnect the wires to terminals 1 and 7.