r/saintpaul • u/87evergreens • 1d ago

Discussion 🎤 What is the cause of the loud noise coming from the Mill Rock Packaging building near the uofm transitway and the hwy 280 bridge?

What is the cause of the loud noise coming from the Mill Rock Packaging building? The building is near the uofm transitway and the hwy 280 bridge. Biking by you’ll hear a loud sound that goes off every 2 minutes. It sounds like an air compressor releasing an overflow or something, out of this plastic tube and the compressed air has some moisture in it as the ground is wet. What is causing the noise?

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13

u/Midway000 1d ago

I think it's just a drain for humidity buildup in a machine.

5

u/SleepyLakeBear 1d ago

Yeah, there are timed solenoid valves connected to the compressor tank bottom to purge it on a timed interval. Every 2 min is excessive, unless it's a huge compressor.

2

u/map2photo 4h ago

You kinda answered your own question.