PTX10003 Site Guidelines and Requirements

The PTX10003 must be installed in a rack. It must be housed in a dry, clean, well-ventilated, and temperature-controlled environment.

Follow these environmental guidelines:

• The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing the efficiency of the PTX10003 cooling system.

• Maintain ambient airflow for normal PTX10003 operation. If the airflow is blocked or restricted, or if the intake air is too warm, the chassis might overheat, leading to the PTX10003 temperature monitor shutting down the router to protect the hardware components.

Table 1 provides the required environmental conditions for normal PTX10003 operation.

Efficient device operation requires proper site planning and maintenance. It also requires proper layout of the equipment, rack or cabinet, and wiring closet.

To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:

• Keep the area around the chassis free from dust and conductive material, such as metal flakes.

• Follow prescribed airflow guidelines to ensure that the cooling system functions properly. Ensure that exhaust from other equipment does not blow into the intake vents of the device.

• Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the equipment. Static discharge can cause components to fail completely or intermittently over time.

• Install the device in a secure area, so that only authorized personnel can access the device.

For installations that require a separate grounding conductor to the chassis, the PTX10003 must be adequately grounded before power is connected to ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements. To ground a PTX10003, connect a grounding cable to earth ground and then attach it to the chassis grounding point.

Before connecting the PTX10003 to earth ground, review the following information:

• A protective earthing terminal bracket is required for connecting the PTX10003 to earth ground. This two-holed bracket attaches through the mounting bracket, providing a protective earthing terminal for the router. The accessory box shipped with the PTX10003 includes the cable lugs that attach to the terminal studs of each power supply module. The cable lugs are dual hole and sized to fit 1/4-20 UNC terminal studs at 15.86-mm (0.625-in.) spacing along center line.

• The grounding cable that you provide must be of the same size or heavier than the input wire of each power supply. The minimum recommendation is 4 AWG (8.4 mm²) stranded wire, 90° C wire, or as permitted by local code. We provide a grounding lug for 4 AWG (8.4 mm²), #10-32 screws, and 0.75 hole spacing.

When planning the site for a PTX10003 installation, you must allow sufficient clearance around the installed chassis (see Figure 1).

Figure 1: Clearance Requirements for Airflow and Hardware Maintenance for the PTX10003

Follow these guidelines:

• For the cooling system to function properly, the airflow around the chassis must be unrestricted. See PTX10003 Cooling System Description and Airflow for more information about the airflow through the chassis.

• If you are mounting a PTX10003 in a rack with other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.

• You must leave at least 24 in. (61 cm) both in front of and behind the PTX10003 for service personnel to remove and install hardware components.

Table 2 lists the physical specifications for the PTX10003 chassis.

The PTX10003 chassis is designed to be installed in a four-post 19-in rack.

Rack requirements consist of:

• Rack type

• Mounting bracket hole spacing

• Rack size and strength

• Rack connection to the building structure

Table 3 provides the rack requirements and specifications for the PTX10003.