ASA 5506 X; Operating Temperatures?

Wondering if anyone knows the temperature thresholds for the ASA 5506X. Just installed one at a remote site and it's locked up twice now.

1st time it continued to operate, but wouldn't allow any SSH access, including locally.

2nd time, it locked up hard. Had to powercycle it.

I'm wondering if it's overheating as there's no env controls in the closet it lives in.

Output from sho env;

Temperature: ----------------------------------- Processors: -------------------------------- Processor 1: 47.0 C - OK (CPU Core Temperature) Accelerators: -------------------------------- Accelerator 1: 49.0 C - OK (Accelerator Temperature) Chassis: -------------------------------- Ambient 1: 53.0 C - OK (Chassis Temperature) Motherboard: -------------------------------- Ambient: 53.0 C - OK (Chassis Temperature) 

Cisco's guide shows what I'm assuming to be overall operating temp thresholds as

Operating: 32°F to 104°F (0°C to 40°C) (ASA 5506-X and ASA 5506W-X)

All my temps are above that. Time to worry?