Kärcher 550.0 Operator's Manual

Kärcher 550.0 Operator's Manual Manual pdf 12 page image

9.800-079.0 • Rev. 05/14OPERATOR’S MANUAL PRESSURE WASHER12PREVENTATIVE MAINTENANCE1. Check to see that the water pump is properly lubri-cated.2. Follow Winterizing Procedures to prevent freezedamage to the pump and coils.3. Always neutralize and flush detergent from systemafter use.4. If water is known to be high in mineral content, usea water softener in your water system or de-scaleas needed.5. Do not allow acidic, caustic or abrasive fluids to bepumped through system.6. Always use our high grade quality cleaning prod-ucts.7. Never run pump dry for extended periods of time.8. Use clean fuel: kerosene, No. 1 fuel oil or diesel.Replace fuel filter every 100 hours of operation.Avoid water contaminated fuel as it will seize upthe fuel pump.9. If machine is operated with smoking or eye burningexhaust, coils will soot up, not letting water reachmaximum operating temperature. (See section onAir Adjustments.)10. Never allow water to be sprayed on or near engineor burner assembly or any electrical component.11. Periodically delime coils as per instructions.12. Check to see that engine is properly lubricated.It is advisable, periodically, to visually inspect theburner. Check air inlet to make sure it is not clogged orblocked. Wipe off any oil spills and keep this equipmentclean and dry.The areas around the pressure washer should be keptclean and free of combustible materials, gasoline andother flammable vapors and liquids.The flow of combustion and ventilating air to the burnermust not be blocked or obstructed in any manner. Con-sult factory if vent stacking is going to be used.MAINTENANCE AND SERVICEUnloader Valves:Unloader valves are preset and tested at the factorybefore shipping. Occasional adjustment of the unloadermay be necessary to maintain correct pressure. Callyour local dealer for assistance.Winterizing Procedure:Damage due to freezing is not covered by warranty. Ad-here to the following cold weather procedures wheneverthe washer must be stored or operated outdoors underfreezing conditions.During winter months, when temperatures drop below32°F, protecting your machine against freezing is nec-essary. Store the machine in a heated room. If this is notpossible then mix a 50/50 solution of anti-freeze/waterinto a 5 gallon bucket. Place a short section of gardenhose into the bucket and connect it to the machine.Elevate the bucket and turn the pump on to siphon theanti-freeze through the machine. If compressed air isavailable, an air fitting can be screwed into the inletconnector and, by injecting compressed air, all waterwill be blown out of the system.High Limit Hot Water Thermostat:For safety, each machine is equipped with a high limitcontrol switch. In the event that the temperature of thewater should exceed its operating temperature, thehigh limit control will turn the burner off until the watercools.Pumps:Use only SAE 30W non-detergent oil. Change oil afterthe first 50 hours of use. Thereafter, change the oil everythree months or at 500 hour intervals. Oil level should bechecked by using the dipstick found on top of the pumpor the red dot visible through the oil gauge window. Oilshould be maintained at that level.Cleaning of Coils:In alkaline water areas, lime deposits can accumulaterapidly inside the coil pipes. This growth is increased bythe extreme heat build up in the coil. The best preventionfor liming conditions is to use high quality cleaning de-tergents. In areas where alkaline water is an extremeproblem, periodic use of our Deliming Powder (part#9-028008) will remove lime and other deposits beforecoil becomes plugged. (See Deliming Instructions foruse of Deliming Powder.)Deliming Coils:Periodic flushing of coils is recommended.1. Fill a container or optional float tank with 4 gallonsof water, then add 1 lb. of deliming powder. Mixthoroughly.2. Remove wand assembly from spray gun and putspray gun into container. Secure the trigger on thespray gun into the open position.3. Attach a short section (3-5 ft.) of garden hose tomachine to siphon solution from an elevated con-tainer. Turn pump switch on, allowing solution tobe pumped through coils back into the container.Solution should be allowed to circulate 2-4 hours.4. After circulating solution flush entire system withfresh water. Reinstall wand assembly to spraygun.MAINTENANCE