Fire Door and Portable Extinguishers Inspection Monthly Fire Door Inspection Monthly Fire Extinguisher Inspection Bring back (6) CO2s that have been serviced. Recharge and sell new extinguishers to Wrigley Employees. Time - 6:00am - 8:00am and 2:00pm - 4:00pm. Bill Wrigley for all recharges and employees pay 50% of unit cost. Cash or Check