I am managing a small server room containing different pieces of networking equipment e.g. cisco3900, paloalto appliance, pc routers, various switches. The issue is that our server room has been operating without an air-conditioning unit for a long time already. I maybe stating the obvious here but I am afraid that at some point some of the networking equipment will fail because of the heat if they continue to run with only their built-in fans available for cooling. For example, the cisco3900 router's temperature is at 62 deg C at the moment. Specifically for the Cisco router, do I turn it off, or is it still operating at an acceptable temperature level?
ADDITIONAL DETAILS: I think, the ambient temperature of the room is close to 30 deg C.
What is the temperature inside of the room?
Read the manufacturer's specifications. They provide the recommended ambient operating temperature ranges for the Cisco 3900.
It seems like you should consider cooling for your server room. Portable air conditioners are a common solution to this problem.
Why would you turn the equipment off?