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Excessive heat cooks electronic equipment, even carrier-grade telecom gear. It's essential to constantly monitor temperature at your remote sites with four-threshold and live value analog alarms. Heat also damages other equipment. High temperatures will dramatically shorten the useful life of your batteries. A lead leadacid battery that would last 10 years under ordinary conditions will last only a year if it's consistently operated at temperatures over 122 degrees Fahrenheit.
In a recent case a telecommunications company lost a remote site with hundreds of thousands of dollars of equipment due to the lack of temperature monitoring. With the added heat radiation of servers and equipment, the site quickly turned into an oven cooking the equipment beyond repair.
It's important to monitor the HVAC systems that maintain your remote site environment. If you can catch an air conditioning failure early, you can intervene, start repairs and restore the remote site environment before equipment goes into thermal shutdown or the site goes dark.
Don't forget to also provide a secondary power supply for HVAC systems. An often-overlooked danger of power outages is that the telecom equipment will continue to run on backup power while the air conditioning, connected only to commercial power, is out. The equipment keeps running, the heat keeps rising, until the temperature forces a thermal shutdown.