- play_arrow Fast Track: Initial Installation
- play_arrow Site Planning, Preparation, and Specifications
- play_arrow Initial Installation and Configuration
- ACX7509 Router Installation Overview
- Unpack an ACX7509 Router
- Install the ACX7509 in a Rack
- Connect an ACX7509 Router to External Devices
- Register Products—Mandatory to Validate SLAs
- Connect Earth Ground to ACX7509 Routers
- Connect Power to the ACX7509 Router
- Perform Initial Software Configuration of the ACX7509 Router
- play_arrow Maintaining Components
- play_arrow Troubleshooting Hardware
- play_arrow Contacting Customer Support and Returning the Chassis or Components
- play_arrow Safety and Compliance Information
- General Safety Guidelines and Warnings
- Definitions of Safety Warning Levels
- Qualified Personnel Warning
- Warning Statement for Norway and Sweden
- Fire Safety Requirements
- Installation Instructions Warning
- Restricted Access Warning
- Ramp Warning
- Chassis and Component Lifting Guidelines
- Rack-Mounting and Cabinet-Mounting Warnings
- Grounded Equipment Warning
- Radiation from Open Port Apertures Warning
- Laser and LED Safety Guidelines and Warnings
- Maintenance and Operational Safety Guidelines and Warnings
- General Electrical Safety Guidelines and Warnings
- Prevention of Electrostatic Discharge Damage
- Site Electrical Wiring Guidelines
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- DC Power Disconnection Warning
- DC Power Grounding Requirements and Warning
- DC Power Wiring Sequence Warning
- DC Power Wiring Terminations Warning
- Multiple Power Supplies Disconnection Warning
- TN Power Warning
- Action to Take After an Electrical Accident
- Agency Approvals for ACX7509 Routers
- Compliance Statements for NEBS
- Compliance Statements for EMC Requirements
- Compliance Statements for Environmental Requirements
Cooling System and Airflow in ACX7509 Routers
The cooling system components work together to keep all router components within the acceptable temperature range.
When the router is operating normally, the fans function at lower than full speed. If a fan fails or the ambient temperature rises above a threshold, the speed of the remaining fans is automatically adjusted to keep the temperature within the acceptable range. If the maximum temperature specification is exceeded and the system cannot be adequately cooled, the Routing and Control Board (RCB) shuts down some or all of the hardware components.
The cooling system consists of the following components:
Fan trays
Airflow
Air filter unit
Power supply cooling system
Fan Trays
The ACX7509 router has two hot-insertable and hot-removable field-replaceable fan trays that sit at the rear of the router (See Figure 1). The fan trays plug onto the midplane of the chassis through the fan tray extension card. Each fan tray contains these parts:
Four dual-rotor, counter-rotating fans
A fan controller card
Five STATUS LEDs: Four LEDs with the fan symbol indicate the operating condition of the counter-rotating fans and the fifth FEB LED indicates the operating condition of the Forwarding Engine Board (FEB) installed in the FEB slot behind the fan tray. See Figure 2.
Fan Status LEDs
Each fan has one bicolor LED. See Figure 2
1 - 4 - Status of the four dual-rotor, counter-rotating fans
5 - Status of the FEB behind the fan tray
Table 1 describes the behavior of the fan and FEB LEDs.
| Label | Color | State | Description |
|---|---|---|---|
STATUS (Fan status) | Green | Blinking | Fan hardware initialization is complete. Software initialization is pending |
On steadily | Software initialization is complete, and the fan is functioning normally | ||
Yellow | On steadily | Equipment is faulty and malfunctioning | |
Dark | Off | Fan tray input power failure | |
FEB (FEB status) | Green | Blinking | The FEB is booting |
On steadily | The FEB is online and functioning normally | ||
Yellow | On steadily | The FEB has failed | |
Dark | Off | The FEB is offline |
Airflow
The router has a front-to-back (AIR OUT) cooling system (see Figure 3). Air is pulled through the front of the chassis toward the fan trays, which exhaust the air out of the router.
Air Filter Unit
The air filter unit consists of three parts: the outer filter cover, the air filter, and the inner cage. The air filter sits right inside the outer filter cover and the inner cage. The air filter unit is installed into the cable management brackets and is secured to the brackets by captive screws.
You must replace the air filter every 6 months.
