Ross ULTRIX-FR1 Upgrade Manual

CAUTION: Before proceeding, refer to the "Important Regulatory and Safety Notices to Service Personnel" document that was included with your router. It is also recommended to refer to the Ultrix
Installation Guide which is available for download from our website.

Removing the Cooling Fan Module from the 1RU Chassis

Caution
minutes.
The Cooling Fan Module is critical to the operation of the Ultrix router. Should a fan fail within the module, you will
need to replace the entire module with a new one. You will also need to transfer the MicroSD card from the failed
Cooling Fan Module to the new module.
The Cooling Fan Module is accessed via the front of the router chassis and requires that you remove the door first. The
door is secured to the front of the router chassis with a rare earth magnet on each side.
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The Cooling Fan Module replacement should be performed while the chassis is powered on.

To remove the door from the chassis

ESD Susceptibility
devices. Avoid handling circuit boards in high static environments such as carpeted areas and when
synthetic fiber clothing is worn. Always exercise proper grounding precautions when working on circuit
boards and related equipment.
1. With your left hand, grasp the top and bottom of the door at the left side.
2. With your right hand, grasp the top and bottom of the door at the right side.

If you are having trouble removing the door from the chassis, you can insert a flathead screwdriver into the notch on
either side of the door for added leverage.
3. Pull the right side of the door towards you to disengage it approximately 1.0" from the chassis.
4. Pull the left side of the door towards you to fully disengage the door from the chassis.
Caution
2101DR-426-02
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ULTRIX-FR1 Cooling Fan Module Upgrade Guide
— For reliable performance, the Ultrix router should not run without fans for more than 5
— Static discharge can cause serious damage to sensitive semi-conductor
Figure 1 Front Panel — Where to Grasp the Door
— Pull the door off without twisting or rotating it at too steep of an angle.
This document is intended to be used for module replacements only.
Notch