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Filter Water Drain Coil Descaling In hard water areas, scale build-up within the heating coil will occur. Scale deposits will decrease the water temperature rise and may eventually clog the heating coil. 1. Mix scale remover in a 5 gallon bucket and elevate the bucket so it is higher than the pump. 2. Attach the high pressure hose to the high pressure water outlet on the machine. Do not hook up the spray gun. 3. Place the other end of the high pressure hose in the 5 gallon bucket. 4. Attach a short length of hose to the garden hose inlet on the pump. 5. Prime the pump by filling the hose with water, then place the end of the hose in the bucket. 6. Run the pressure washer in cold mode for 1 to 3 hours recirculating the cleaning solution. Warning: Do not run the burner. 7. Dispose of the cleaning solution where it is not harmful to animals or the environment. 8. Flush with fresh water and clean the inlet strainer when finished. Coil Desooting Poor grades of fuel oil or inadequate combustion air will cause heavy soot build-up on the outside surface of the heating coil. These deposits will insulate the coil. This will restrict the air flow through the coil, further aggravating the soot build- up. Most coils will never require desooting. However, to desoot a coil... 1. Wear protective clothing, goggles, and gloves. 2. Remove the fittings from the inlet and outlet of the coil. 3. Remove the lid from the heating chamber and hoist the coil out. Be careful, the coil is very heavy. Important: Be careful not to damage the threads on the coil inlet and outlet. If the threads get damaged, it will be hard to reconnect and seal the fittings on the coil inlet and outlet. Heating Coil Heating Chamber Short High Pressure Hose 00792 Insulation Cap Lid Clean Inlet Strainer When Finished 00791 4. Clean the coil. 5. Reassemble the coil to the machine. Make sure the white insulation remains in place. 6. Make sure all fittings are tight before using the machine. Use thread sealant on all threads. Electrodes On a yearly basis the electrodes should be inspected and any necessary adjustments made. 1. Tip the machine back until it rests on the frame. 2. Remove the 4 nuts that attach the burner to the heating chamber. You do not have to disconnect the fuel lines or the electric co 4 Nuts 00793 3. Let the burner fall away from the heat exchanger. 4. Clean off carbon deposits, which may have accumulated on the tips of the electrodes. 5. Reset the spacing as shown below. 1/16” 1/8” 5/16” Electrodes 00794 Cleaning Instructions for Flow Switch on 157306, 157307 & 157308 Mineral build-up and/or debris within the flow switch can occur and may affect burner operation if not periodically cleaned. Mineral build-up and/or debris can stop the movement of the shuttle inside the flow switch body. Shuttle movement is important because the burner will not fire if the shuttle does not move. The shuttle movement actuates a switch inside the flow switch housing which allows the burner to fire during spray mode. Removable Outlet Fitting Brass Body Swivel Fitting Inspect and clean the flow switch as needed 1) Disconnect the swivel fitting from elbow to the inlet of the coil 2) Disconnect the whole flow switch assembly including the swivel and removable outlet fitting where the brass body connects to hose or tee depending on model Shuttle Alignment Shuttle male tabs Shuttle Swivel Fitting Removable Outlet Fitting Flow Switch Assembly Brass Flow Switch Body female guides 3) Unthread the removable outlet fitting with the swivel still attached from the flow switch assembly 4) Remove the shuttle 5) Clean the inside of the brass flow switch body and the shuttle with water and a soft brush 6) Insert the shuttle into the brass flow switch in the orientation shown Note: Aligning the male tabs on the shuttle to the female guides inside the brass flow switch body can be difficult since the shuttle is magnetic 7) Thread the removable outlet fitting with the swivel still attached into the flow switch assembly 8) Thread the brass flow switch body onto the incoming water flow source (hose or tee) depending on the model 9) Reconnect the swivel fitting to the inlet of the coil Moving and Handling Instructions Maneuvering Your Pressure Washer 1.) Pull the handle back with both hands. 2.) Rotate the handle downward to a comfortable height. 3.) Push the pressure washer forward as you walk. Lift Here Handle Lifting Your Pressure Washer 1.) To reduce risk of injury, it is recommended to use a hoist to lift this pressure washer. 2.) Lift from lifting point (see picture) Long Term Storage During cold weather, store the pressure washer indoors and move it outdoors before starting. Follow these instructions to prevent the pump from freezing during storage. RV Antifreeze Water Inlet Hose Funnel Winter Storage: Items needed: 12” piece of garden hose or equivalent, funnel and RV antifreeze (approximately 2 gallons). 1.) Attach the garden hose with funnel to the pump inlet (see illustr...