On November 18, 2019, at approximately 5:41 pm, the Farmers Branch Fire Department responded to an automatic fire alarm – water flow alarm at RMAX, located at 13524 Welch Rd..  Farmers Branch Engine 132 arrived on scene at 5:45 pm with nothing showing.  Upon further investigation, building personnel directed the crew to a manufacturing processing machine.  The product within the machine overheated  causing one internal sprinkler head to activate.  Fire loss was estimated to be $0.  Engine 132 crew shut off the control valve.  Building occupants notified their fire protection company to replace the sprinkler head and recharge the system.  Engine 132 cleared at 5:55 pm.