1. The area surrounding the heater shall be kept clearand free from combustible materials, gasoline, andother flammable vapors and liquids.2. Have your gas supplier check all gas piping annuallyfor leaks or restrictions in gas lines.3. Regulators must be periodically inspected to makesure the regulator vents are not blocked. Debris,insects, insect nests, snow, or ice on a regulator canblock vents and cause excess pressure at the heater.4. Regulators can wear out and function improperly.Have your gas supplier check the date codes on allregulators installed and check delivery pressures tothe heater to make sure that the regulator is reliable.5. Check all wiring, associated terminals, and electricalcomponents within the heater for corrosion, frayed orcut insulation, tight connections, etc. Repair orreplace as necessary.6. Review all heater markings (i.e. wiring diagram,warnings, start-up, shut-down, troubleshooting, etc.)at the time of maintenance for legibility. Make surenone are cut, torn, or otherwise damaged. Anydamaged markings must be replaced immediately bycontacting the L.B. White Co., Inc. Dataplates, start-up and shut-down instructions and warnings areavailable at no cost. A nominal charge will be appliedfor wiring diagrams.Maintenance Instructions1. Before cleaning, shut off all gas supply valves anddisconnect electrical supply.2. The heater should have dir t or dust removedperiodically:a. Before each use give the heater a generalcleaning using compressed air or a soft brush ordry rag on its case and internal components. Atthis time, dust off the motor case to prevent themotor from over-heating.b. At least once a year, give the heater a thoroughcleaning. At this time, remove the fan and motorassembly and brush or blow off the fan bladeassembly. Additionally, make sure the burner airinlet venturi ports and the casting are free of dustaccumulation.WARNINGDo not use a pressure washer, water, or liquid cleaningsolution on any gas controls. Use of a pressure washer,water, or liquid cleaning solution on the controlcomponents can cause severe personal injur y orproperty damage due to water and/or liquids:■ In electrical components, and wires causing electricalshock or equipment failure.■ On gas control valves causing corrosion which canresult in gas leaks and fire or explosion from the leak.Clean all components of the heater with pressurized air,a dry brush, or a dry cloth.Cleaning InstructionsWARNINGFire, BBurn, aand EExplosion HHazard■ This heater contains electrical and mechanical components in the gas management, and safety systems.■ Such components may become inoperative or fail due to dust, dirt, wear and aging.■ Periodic cleaning and inspection as well as proper maintenance are essential to avoid serious injury or propertydamage.1415