9 Anesthetic Gas Module Repairing the Anesthetic Gas Module
242
Solenoid Valve #1
Removal
To remove solenoid valve #1 (refer to Figure 66 and Figure 67):
1 Remove the pneumatic tubing (1) from solenoid valve #1.
2 Remove the power connector (2) from the main PC board.
3 Pry the twisted pair supplying power from the solenoid valve out of the cable clip (3).
4 Using a cross-tipped screwdriver, remove the three screws (4) securing the IR measurement
assembly head.
5 Lift the IR measurement head slightly so that the screws (5) securing the solenoid valve are
accessible.
6 Using a cross-tipped screwdriver, remove the two screws securing solenoid valve #1 to the IR
measurement mounting bracket.
7 Carefully remove solenoid valve #1 and its cable from the IR measurement mounting bracket.
Replacement
To replace solenoid valve #1 (refer to Figure 66 and Figure 67):
1 Lift the IR measurement assembly head slightly so that the threaded bores (5) on the mounting
bracket for the solenoid valve are accessible.
2 Carefully position Solenoid Valve #1 so that its locating holes align with the threaded bores on the
mounting bracket.
3 Using a cross-tipped screwdriver, replace the two screws (5) securing Solenoid Valve #1 to the IR
measurement mounting bracket.
4 Snap the twisted pair from the solenoid valve into the cable clip (3) securing the twisted pairs that
connect the IR measurement assembly head to the main PC board.
5 Replace the connection (2) to the main PC board.
6 Replace the pneumatic tubing (1) to Solenoid Valve #1.
NOTE Check that all tubing is tightly connected and show no signs of damage.
After replacing Solenoid Valve #1, check that all flat-cable connectors are firmly seated and show no
signs of damage.
7 Using a cross-tipped screwdriver, replace the three screws (4) securing the IR measurement
assembly head.
8 Replace the IR measurement assembly mounting bracket (refer to “Lifting the IR Measurement
Mounting Bracket” on page 233).
Now perform the performance checks described in the “Test and Inspection Matrix” on page 262.
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