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Cleaning Your cRIO-FRC and Installing Protective Gaskets
This document describes how to clean the cRIO-FRC if it has been internally contaminated by metallic
debris such as wire fragments, flakes, or dust. You must be very careful disassembling the cRIO-FRC.
When you remove the printed circuit board (PCB) from the enclosure, it is vulnerable to electrostatic
discharge (ESD) and physical damage. Failure to follow the directions in this document may result in
damage to your cRIO-FRC and void the warranty.
If you are uncomfortable with disassembling and cleaning your controller, you can provide a minimal
level of protection by installing the external Module Connector Gasket. To do that, skip to the
Installing the Module Connector
Table of Contents
Preparation
•
Disassembling the cRIO-FRC
•
Cleaning the cRIO-FRC
•
Installing the I/O Gasket
•
Reassembling the cRIO
•
Installing the Module Connector Gasket
•
Gasket section of this document.
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Summary of Contents for National Instruments cRIO-FRC
- Page 1 Cleaning Your cRIO-FRC and Installing Protective Gaskets This document describes how to clean the cRIO-FRC if it has been internally contaminated by metallic debris such as wire fragments, flakes, or dust. You must be very careful disassembling the cRIO-FRC. When you remove the printed circuit board (PCB) from the enclosure, it is vulnerable to electrostatic discharge (ESD) and physical damage.
- Page 2 NOTE: You should use an ESD mat whenever you handle electronics. However, if a mat is not available, you can discharge static electricity from your body by touching the bare metal of a grounded computer or other electrical equipment before touching the cRIO-FRC.
- Page 3 Disassembling the cRIO-FRC CAUTION When handling the cRIO-FRC circuit board, never hold it by the components or connectors. Make sure to hold the board only by the edges. Do not touch the integrated circuits. Before starting, make sure you have read the above sections listing the tools and preparation required.
- Page 4 2. Place the cRIO-FRC face down on the ESD mat. Using the #1 Philips screwdriver, remove the eight screws that secure the back plate to the chassis (Note: Take care to apply moderate downward force and work slowly to reduce the risk of damaging the cross recesses in the screw heads).
- Page 5 Removing the back plate 4. Using the same method as in the previous step, raise the PCB by lifting the serial port from under the chassis with one hand, and carefully remove the PCB with the other hand. Place the PCB on the ESD mat with the connectors facing up, and set the chassis aside.
- Page 6 Cleaning the cRIO-FRC CAUTION Use only compressed air to clean the cRIO-FRC. Do not clean the cRIO-FRC casing or PCB with any cleaners or solvents. CAUTION When using compressed air, do not hold the can upside down or in a manner that causes liquid propellant to spray onto the cRIO-FRC casing or PCB.
- Page 7 Using a paintbrush to remove foreign objects from the chassis 3. Repeat steps 1 and 2 to clean the PCB and back plate. Be careful not to force debris under the components.
- Page 8 Installing the I/O and Ethernet Gaskets Before reassembling the cRIO-FRC, you can install two gaskets to help prevent future contamination. NOTE The gaskets reduce the risk of contamination but do not completely eliminate it. You should still keep the cRIO-FRC away from conductive debris such as metal shavings and grinding debris.
- Page 9 4. Repeat steps 2 and 3 for the other gasket. 5. Before firmly seating the gaskets, flip the chassis over and confirm that the gasket openings and chassis openings are centered. 6. Using your finger, firmly press each gasket into place. Work slowly and take care not to tear the gasket material.
- Page 11 Reassembling the cRIO-FRC 1. Place the chassis face down on the ESD mat. 2. Position one end of the PCB board over the corresponding hole in the casing, and gently ease it back into place inside the chassis. 3. Replace the back plate on top of the PCB. You may need to apply slight pressure after having installed the protective gasket to push the connectors through the gasket openings.
- Page 12 Installing the Module Connector Gasket 1. Place the chassis face up on the ESD Pad. 2. Partially remove the backing from the Module Connector Gasket to reveal the adhesive. Take care to minimize adhesive contact with foreign objects such as fingers or dust. 3.
- Page 13 5. When the gasket is in place around all connectors, go back over it and firmly press it into place with a soft, blunt tool.
- Page 14 Congratulations! You have successfully cleaned your cRIO controller and applied gaskets to help prevent future contamination. Please remember to keep the cRIO-FRC and other robot electronics isolated from metallic debris at all times. There are many ways to do this, including:...
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