Arrived at location on 6/30/21 - Removed 2 old fryers and installed new Cecilware fryer. Hooked up gas. Customer wanted to reuse the old gas hose. Checked it over and there were no leaks. Hose is dirty. Turned on gas and checked for leaks. None detected. Gas pressure at 10 " LP. Set thermostat to 350. Heated and maintaining temp. Back in service.