In Phoenix, near West Missouri Avenue and North 21st Avenue performing Fall preventative maintenance on a Westinghouse gas pack. Removed and cleaned flame sensor. Vacuumed out burners and ignition system. Cycled system on into heating mode. Checked back pressure safety switch, safety shut down; both working properly. Checked indoor blower motor and inducer motor amps. Checked volt and amp draws. Upon departure, system is running properly and within manufacturer specifications.
