Fluke Calibration 4322-SYS-NAVAIR, Руководство по обслуживанию

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4322
Service Manual
4-18
Manifold
Use the following instructions and reference Figures 4-8 and 4-9 to extract the manifold
assembly from the chassis.
1.
Use the instructions in “Chassis and Control Panel” on page 4-9 to remove the
chassis and take off the control panel.
2. Disconnect the pressure lines and electrical connections in order to remove the
manifold assembly as follows (see Figure 4-8):
a.
Remove the two screws and washers (

and

) that secure the fan bracket (not
shown) to the manifold assembly. This bracket covers the NC isolation valve
(

) on the manifold assembly.
b. Disconnect the vent lines (

and

) that connects to the control panel
atmosphere vent fitting. Disconnect the Barometer tube line (

) from the side of
the manifold.
c. Put the Controller face down and remove PV1 (

) and PV2 (

) electrical
connectors.
d. Disconnect the electrical connectors to valves V7, V6, and V5 (

,

, and

.
Also disconnect the NC valve cable (

) from the main PCA (not shown) labeled
as "VH1" on the board. Pry off the anti-vibration cover from the J1 connector and
remove the ribbon cable connector from the backplane PCA.
3. Prepare the manifold assembly for extraction as follows (see Figure 4-9):
a.
Remove the two screws that secure the output tube-weld (

) on the manifold
that that connects to the CPS dock.
b. Remove the two screws and washers (

) that secure the right side of the
manifold to the chassis (one screw is button head to accommodate clearance for
the communication box).
c. Remove the four screws and washers (

and

) that secure the left side of the
manifold to the chassis.
4. Extract the manifold from the chassis. To do this, slowly remove the manifold
assembly from the chassis and make sure all wires and tubes are disconnected.
5. Use the instructions in “Precision, Isolation, and Control Valves and Backplane
PCA” on page 4-33 to replace the necessary part. Once the parts are replaced, use the
instructions in “Manifold Assembly Reinstallation” to put the manifold assembly into
the chassis.
Use the following instructions and reference Figures 4-8 and 4-9 to put the manifold
assembly into chassis.
1.
Put the manifold assembly into the chassis.
2. Install the two screws and washers (

) that secure the right side of the manifold to
the chassis (one screw is button head to accommodate clearance for the
communication box). See Figure 4-9.
3. Install the four screws and washers (

and

) that secure the left side of the
manifold to the chassis.
4. Install the two screws that secure the output tube-weld (

) on the manifold that that
connects to the CPS dock (see Figure 4-9).
5. Connect the pressure lines and electrical connections in order to remove the manifold
assembly as follows (see Figure 4-8):
a.
Install the two screws and washers (

and

) that secure the fan bracket (not
shown) to the manifold assembly. This bracket covers the NC isolation valve
(

) on the manifold assembly. The M4 x 12 is used for the ferrite clamp.
b. Connect the ground wire (

) from the manifold assembly.