ACR-300 Setup Instructions

The ACR-300 board is designed to operate in the same way as the ACR 3 APEX board from GEA® with a few exceptions. One unique feature of the ACR-300 is that it has a detachable keypad which can be purchased separately. Another design change is that the resistance adjustment potentiometer has been removed and the value has been preset to 460 ohms. (If a different resistance is needed, use the procedure described at the end of the instructions.) Use the following instructions to install the ACR-300 to a preexisting milking stall. If any changes need to be made to the milking parameters, refer to the GEA® instruction manual for the ACR 3 APEX.

1. Install Terminal:

Press the terminal block plug onto the pin header.

2. Attach wires:

Attach the two supplied wires to the terminal block.
Attach all the other terminal blocks to their appropriate connector.

3. Set the dip switches:

Set the DIP switches to match the original board.

Electrode Calibration Procedure (not normally needed):

1. Using a test potentiometer, set to the desired resistance, attach its leads between the Milk Flow pins (J9 terminal, pins 3 and 4). Suggested values based upon GEA® Instruction Manual 7053-9001-019 are:

• VisoFlow: 460Ω (Factory Default)

• Legacy: 220Ω

2. To put the unit into calibration mode, hold the “Start” button and then apply power and release the start key.

3. If all three LED’s are lit, the value is already set and no calibration is needed.

4. If only one LED is lit, press and hold the “C” button until the green light flashes indicating that the new value was accepted. All three LEDs should be on at this time. (Note: If the red LED flashes it indicates the value was out of range or another problem occurred.)

5. Pressing the stop key or cycling the power off and on will release the board from the calibration mode.

6. Calibration procedure completed.