Amico Automatic Cryogenic Liquid Solenoid Manifold - Manual (Page 22)

22 Amico Pipeline
Control Board Replacement
If necessary, the control board replacement can be performed while the manifold is in service. However, this should only
be done by qualified technicians experienced in servicing medical equipment.
1. Remove two top screws at the base of the display board bracket and tilt the display board assembly back.
2. Disconnect power supply.
3. Remove the screws located on the circuit board, which detaches it from the front plate. Note orientation of the old
circuit board and remove wiring one at a time and connect each wire to the appropriate terminal on the new board.
4. Install the circuit board and fasten the screws to secure it. Return bracket to its original position and then fasten the two
screws at the base.
5. Reconnect power supply to the manifold cabinet.
6. Check the correct operation of the circuit board by simulating a bank switch over a couple of times.
Solenoid Replacement
1. Ensure the Solenoid that needs to be replaced is not the side that is In-use.
2. Disconnect power supply if manifold is not in service.
3. Remove two top screws at the base of the display board bracket and tilt the display board assembly back and with
the help of a small flat screw driver, disconnect the solenoid wires labeled L for left and R for right to indicate the side
of the solenoid from the terminal block on the circuit board.
4. Remove the two union nuts on either side of the solenoid, one located at the inlet side and the other at the
output side of the solenoid.
5. Install the replacement solenoid and tightened the union nuts on either side to ensure the solenoid is secure.
6. Connect the solenoid wires to the appropriate terminal on the circuit board.
7. Return the circuit board bracket back to upright position and then fasten the two screws at the base.
8. Reconnect power supply to the manifold cabinet.
9. Check the correct operation of the solenoid by simulating a bank switch over a couple of times.