Cisco Systems 512, 612 C

C-1

Cisco Wide Area Application Engine 512 and 612 Hardware Installation Guide

OL-9137-02

APPENDIX

Application Engine

Proper use of preventive maintenance procedures can keep your system in good

operating condition and minimize the need for costly, time-consuming service

procedures. This appendix contains maintenance procedures that you should

perform regularly.

This appendix covers the following maintenance tasks:

• Maintaining Your Site Environment, page C-1

• Using Power Protection Devices, page C-7

An exhaust fan in the power supply cools the power supply and system by drawing

air in through various openings in the system and blowing it out the back.

However, the fan also draws dust and other particles into the system, causing

contaminant buildup, which results in an increase in the system’s internal

temperature and interferes with the operation of various system components.

To avoid these conditions, we recommend keeping your work environment clean

to reduce the amount of dust and dirt around the system, thereby reducing the

amount of contaminants drawn into the system by the power supply fan.

This section discusses various environmental factors that can adversely affect

system performance and longevity.