National Instruments PXI Series Installation Manual
Chassis fan replacement
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INSTALLATION GUIDE
PXI and PXI Express Chassis Fan
Replacement
Make sure to unplug the power cord before replacing the fan.
Cautions
Only trained service personnel should replace the fan.
4–6 and 9 Slot Chassis Fan Replacement
Note
Fan replacement is supported only on chassis with specific assembly numbers. The
supported model numbers are listed below, followed by their supported assembly numbers
in parentheses. The x denotes the assembly letter revision.
Before replacing the fan, be sure to check the model and assembly numbers on the back of
your PXI chassis. Replace the fan only if the model and assembly numbers are on the
following list. Refer to the
section for information about previous revisions.
•
NI PXI-1031 (190871x-01, Revision L and newer)
•
NI PXI-1031DC (191746x-01, Revision H and newer)
•
NI PXI-1033 (194918x-01, Revision E and newer)
•
NI PXI-1036 (192592x-01, Revision H and newer)
•
NI PXI-1036DC (192593x-01, Revision F and newer)
•
NI PXIe-1071 (195659x-01L)
•
NI PXIe-1073 (196695x-01, Revision D and newer)
•
NI PXIe-1078 (199485x-01L)
This guide describes how to replace the fan on a PXI and PXI Express
chassis.
NI PXI-103x and NI PXIe-1073 Chassis Fan Replacement
Refer to Figure 1 and the following steps for installation and removal
instructions.
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Summary of Contents for National Instruments PXI Series
- Page 1 INSTALLATION GUIDE PXI and PXI Express Chassis Fan Replacement This guide describes how to replace the fan on a PXI and PXI Express chassis. Make sure to unplug the power cord before replacing the fan. Cautions Only trained service personnel should replace the fan. 4–6 and 9 Slot Chassis Fan Replacement Note Fan replacement is supported only on chassis with specific assembly numbers.
- Page 2 NI PXI-103x and NI PXIe-1073 Chassis Fan Replacement This section describes how to install the NI PXI-103x chassis fan replacement kit for the PXI-1031, PXI-1031DC, PXI-1033, PXI-1036, PXI-1036DC, and PXIe-1073 chassis. Note Fan replacement is supported only on chassis with specific assembly numbers. The supported model numbers are listed below, followed by their supported assembly numbers in parentheses.
- Page 3 Locate the fan access panel on the bottom of the chassis. Remove the access panel screw and the access panel. Remove the two fan shoulder screws, shown in Figure 1, that fasten the fan. Be careful not to lose the screws. Remove the fan. © National Instruments Corporation Chassis Fan Replacement Guide...
- Page 4 Disconnect the fan cable from the inline connector. The connector is shown in Figure 2. 1 Fan 2 Fan Cable Inline Connector Figure 2. Fan Cable Inline Connector Chassis Fan Replacement Guide ni.com...
- Page 5 Ensure that the loose screen doesn’t fall out. If the screen does fall out, return it to its position under the fan. 1 Square Slot on Fan Housing Figure 3. Square Slot on Fan Housing Reinstall the two shoulder screws. © National Instruments Corporation Chassis Fan Replacement Guide...
- Page 6 1 Thermistor wire Figure 4. Thermistor Wire Tighten the shoulder screws to between 3.0 lb · in. minimum torque and 3.6 lb · in. maximum torque. Orient the thermistor wire, as shown in Figure 4, before replacing the fan access Caution panel.
- Page 7 7 Fan Guard Screen 2 Fan Screw (x4) 5 Thermistor 8 Fan Guard 3 Fan Access Panel Screw 6 Thermistor Clip Figure 5. PXI and PXI Express Chassis Part Locations (Chassis Shown Upside Down) © National Instruments Corporation Chassis Fan Replacement Guide...
- Page 8 Complete the following steps to replace the fan (refer to the previous figure for parts locations): Locate the fan access panel on the bottom of the chassis. Remove the access panel screw and the access panel. Remove the four fan screws, shown in Figure 5, that fasten the fan. Be careful not to lose the screws or washers.
- Page 9 Figure 7. Square Slot on Fan Housing Place the fan guards on top of the fan with the round wire guard closest to the fan and the screen guard on top of the round wire guard. © National Instruments Corporation Chassis Fan Replacement Guide...
- Page 10 Insert three of the four screws with the flat washers closest to the fan and the split spring washers closest to the screw heads. The fourth screw does not use washers, but instead anchors the thermistor. Insert the fourth screw through the thermistor clip hole and orient the thermistor as shown in Figure 8.
- Page 11 For patents covering National Instruments products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. Refer to the Export Compliance Information at ni.com/legal/ export-compliance for the National Instruments global trade compliance policy and how to obtain relevant HTS codes, ECCNs, and other import/export data.
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