KALAMAZOO, MI-- Police and a brewery owner are seeking the identity of a person seen on surveillance camera tampering with a switch on a glycol chiller at Boatyard Brewing Company, 432 E Paterson St. at shortly before 7 p.m. April 10.

According to the Kalamazoo Department of Public Safety police report, the metal sheeting was torn off to gain access to the electric switch to shut it off.

Authorities said no loss occurred from spoiled beer because a worker found the problem promptly and turned the cooler back on.

Dan Gilligan, COO of Boatyard Brewing Company, said the action has more serious consequences than a mere prank.

The reason it's a big deal, he said, is because in the brewing process the fluid that's become beer needs to be dropped down in temperature. If for some reason the chiller goes out, the temperature will rise and destroy the process. "You're talking about thousands and thousands of dollars worth of product, not to mention the $20,000 machine that could be damaged in the process" of tampering with the controls, he said.

Gilligan said the chiller provides cooling for up to 3000 gallons of the product, and also cools beer to the taps.

He asks that anyone who recognizes the person or dog in the photo contact him via email at boatyardbrewing.com.