National Instruments PXIe-1092 Installation Manual

INSTALLATION GUIDE
PXIe-1092 Fan Replacement
This document describes how to remove and install the fan assemblies in a PXIe-1092 chassis.
Caution
fan assemblies.

Replacing the PXI Module Fan Assembly

Before attempting to replace the rear module fan assembly, verify that there is adequate
clearance behind the chassis. Disconnect all power cables from the power supplies on the back
of the chassis. Wait at least 30 seconds for the power supplies' internal power to dissipate.
Follow these steps to remove the rear fan assembly:
1. Using a Phillips screwdriver, remove the six #6-32 mounting screws and #8-32 ground
screw that attach the fan panel to the chassis. Refer to Figure 1 for more details.
2. Remove the rear chassis feet.
3. With the internal fan harness still connected, carefully pull and rotate fan assembly from
rear cavity of chassis. Use caution when removing the fan assembly to avoid damaging the
fan wire harness.
4. Disconnect fan harness from the internal chassis receptacle as shown in Figure 2.
Follow these steps to install a new rear fan assembly:
1. Angle the fan assembly to install the fan harness plug into the internal chassis receptacle.
Use care to avoid damaging the fan harness or receptacle.
2. Connect the internal fan harness and install fan assembly into the rear cavity of the chassis
as shown in Figure 2. Use caution when installing the fan panel assembly to avoid pinching
or damaging the wire harness.
3. Replace chassis feet.
4. Using a Phillips screwdriver, tighten the six #6-32 mounting screws and #8-32 ground
screw into the rear of the chassis. To meet the shock and vibration specifications listed in
the PXIe-1092 Specifications, tighten screws to 11.5 lb · in. (1.3 N · m) of torque.
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Disconnect all power cables and wait at least 30 seconds prior to replacing