MAINTENANCE/STORAGE CLEANING AND MAINTENANCE : To enjoy years of outstanding performance from your heater make sure you perform the following maintenance activities on a regular basis: Keep exterior surfaces clean. Use warm soapy water for cleaning. Never use flammable of corrosive cleaning agents. While washing your unit, be sure to keep the area around the burner and pilot assembly dry at all times. If the gas control is exposed to water in any way, do NOT try to use it. It must be replaced. Keep the appliance area free and clean from combustible materials, gasoline or other flammable vapors an liquids; not obstructing the flow of combustion and ventilation air; keeping the ventilation opening(s) of the cylinder enclosure free and clear from debris. Visually check buner flames. At least once a year, the unit should be inspected for the presence of spiders, spider webs or other insects. Air flow must be unobstructed. Keep controls, burner, and circulating air passageways clean. Signs of possible blockage include: Gas odor with extreme yellow tipping of flame. Heater does NOT reach the desired temperature. Heater glow is excessively uneven. Heater makes popping noises. Spiders and insects can nest in burner or orifices. This dangerous condition can damage heater and render it unsafe for use. Clean burner holes by using a heavy-duty pipe cleaner. Compressed air may help clear away smaller particles. Carbon deposits may create a fire hazard. Clean dome and engine with warm soapy water if any carbon deposits develop. 13 WARNING: FOR YOUR SAFETY ; DO NOT touch or move heater for at least 45 minutes after use. Allow all burner elements to cool before touching. NOTE: In a salt-air environment (such as near an ocean). corrosion occurs more quickly than normal. Frequently check for corroded areas and repair them promptly. NOTE: wait until heater is cool before covering.