A sprinkler system inside a Watertown manufacturing facility did its job late Wednesday afternoon and put out a small fire.

Firefighters were called to the Jefferson County Industrial Park off outer Coffeen Street to Allied Motion a little before 3 p.m.

Fire officials told 7 News a spark from equipment in a testing and quality control room set off a small fire above a drop-down ceiling.

The sprinkler system put out the fire, but firefighters had to do smoke removal.

Fire officials say damage was moderate. The building was evacuated.