North Star M157305Y Owner's Manual

Also see for 157305: Installation, operation and maintenance manual Installation, operation and maintenance manual Owner's manual Installation, operation and maintenance manual Instructions for setup

North Star M157305Y Owner's Manual Manual pdf 22 page image

22 Attach high-pressure hose(s) to machine’s high-pressure water outlet. Do not hook up the spraygun. Place other end of high-pressure hose(s) in the 5-gallon bucket. Attach a short length of garden hose to gardenhose inlet on the pump. Prime pump by filling short garden hose withwater (a funnel will work), then placing end ofhose in the bucket. Run pressure washer in cold mode for 1 to 3hours, recirculating the cleaning solution. Dispose of cleaning solution where it is notharmful to animals or the environment. Flush with fresh water and clean inlet strainerwhen finished.Inspect and Clean Flow SwitchMineral build-up and/or debris within the flow switch canoccur and may affect burner operation if not periodicallycleaned. Mineral build-up and/or debris can stop themovement of the shuttle inside the flow switch body.The shuttle movement actuates a switch inside the flowswitch housing which allows the burner to fire duringspray mode. The burner will not fire if the shuttle doesnot move. Disconnect swivel fitting from elbow to the inlet ofthe coil. Disconnect the whole flow switch assemblyincluding the swivel and removable outlet fittingwhere brass body connects to hose or teedepending on model. Unthread removable outlet fitting with the swivelstill attached from the flow switch assembly.Figure 18 – Flow Switch Remove shuttle. Clean inside of brass flow switch body and shuttlewith water and a soft brush. Insert shuttle into brass flow switch in orientationshown in Figure 19. Note: Aligning the male tabs on the shuttle to thefemale guides inside the brass flow switch bodycan be difficult since the shuttle is magnetic. Thread removable outlet fitting with swivel stillattached into flow switch assembly. Thread brass flow switch body onto the incomingwater flow source (hose or tee) depending onmodel. Reconnect swivel fitting to inlet of the coil.Figure 19Inspect Heating Coil and Desoot as NeededInspect and desoot coil annually. Although most coilsnever require desooting, poor grades of fuel oil orinadequate combustion air will cause heavy soot build-up on the outside surface of the heating coil tubing.These deposits will insulate the coil, which then restrictsairflow through the heat exchanger and furtheraggravates the soot build-up.If soot has built up on the exterior of the coil tubing,clean as follows: Wear protective clothing, goggles, and gloves. Disconnect high-pressure hose on inlet side ofcoil and thermostat on outlet side of coil. Remove the lid and insulation cap from theheating chamber and hoist the coil out. The coilweighs 125 lbs. Clean the coil. Reassemble the coil and lids to the machine.Make sure white insulation remains in place.Removableoutlet fittingBrass bodySwivelfittingShuttle AlignmentShuttlemaletabsShuttleSwivelFitting RemovableOutletFitting Flow SwitchAssemblyBrass FlowSwitch Bodyfemale guides