Pneumatic Circuit System Problems Repair and Troubleshooting
5 - 52 046-006272-00 A7™ Service Manual
FIGURE 5-44
6. Release the negative pressure ball. If the negative pressure ball is fully expanded within 30s, it
indicates that the rubber plain washers or its upper surface contacted mechanical surface are
damaged. Handle this problem as described in the troubleshooting table. If not, continue the
following tests.
7. Remove the seal ring, and mount the vaporizer manifold test fixture onto the connector of the
vaporizer manifold assembly (remove the seal between the connector and the vaporizer when
mounting the test fixture)
FIGURE 5-45
8. Repeat step 5 and step 6 every time when the vaporizer manifold test fixture is transferred to the
next position. Once the negative pressure ball is fully expanded within 30s, it indicates that the
rubber plain washers or its lower surface contacted mechanical surface are damaged. Handle
this problem as described in the troubleshooting table. If the four tests are all past, then
continue the following tests.
9. Put the seal ring back, mount the vaporizer and turn it on.
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