That temp is related to ASIC chip, not the PCB temp.

I think the ASIC chip temp should be around 110c more than that it will detect overheating and the hashboard will automatically shut down. The bitmain firmware itself has it's own temp protection it will only trigger when the temp touches 110c.

The link image does not work better upload it on imgur.com
About the normal temp operation of this unit mostly Antminer unit normal temp should not be more than 80c to 85c but s11 according to Bitmain it around 95c PCB temp.

Source: Miner normal operating temperature range

If the temp of your miner is more than the normal operating temp that hashboard will automatically shut down.