Hitachi 231580 manual Test the brushes

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Motor Brushes

9.Test the brushes.

a.Remove the pump connecting rod pin (17). See Fig. 18, page 21.

b.With the sprayer OFF, turn the pressure con- trol knob fully counterclockwise to minimum pressure. Plug in the sprayer.

c.Turn the sprayer ON. Slowly increase the pressure until the motor is at full speed.

d.Inspect the brush and commutator contact area for excessive arcing. Arcs should not trail or circle around the commutator surface.

WARNING

MOVING PARTS HAZARD

Do not touch the brushes, leads, springs or brush holders while the sprayer is plugged in to reduce the risk of electric

shock and serious injury.

10.Install the brush inspection covers and gaskets.

11.Break in the brushes. Operate the sprayer for at least one hour with no load. Install the pump connecting rod pin. See Fig. 18, page 21.

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Contents 308715 PerformanceTable of Contents SymbolsInjection Hazard Equipment Misuse Hazard Fire Skin Injection Explosion HazardComponent Function and Identification Model 231580 shownSetup Fire and Explosion HazardHow to use the gun trigger safety How to use the pressure controlHow to use the pressure drain valve OperationProcedure on How to use the RAC IV tip guardHow to remove a tip clog Startup Pressure Relief ProcedureStartup Procedure Engage the gun safety latch Shutdown and Care Shutdown and CareWhen to Flush How to FlushFollow the Pressure Relief Procedure on FlushingTroubleshooting Basic Problem SolvingIntermediate Problem Solving No output motor runs but pump does not stroke Spray Pattern Variations Armature Short Circuit Test Setup Motor Test General Repair Information Tool ListMoving Parts Hazard HOT Surface HazardMotor Brushes Test the brushes Removing the pump See Fig Displacement Pump RepairRepairing the pump Motor Motor Start Board Power Supply CordOn/Off Switch Drive Housing, Connecting Rod, Crankshaft REF a Pressure Control Pressure Transducer Suction HoseRepair ReplacementDrain Valve Technical Data DimensionsGraco Phone Number French Spanish German Greek Korean EnglishSprayer Parts Drawing Model 231580, Series a Model 232654, Series aDescription Qty Sprayer Parts ListModel 231580, Series A, Model 232654, Series a 644a 12b Motor Brush and Spring Replacement Kit Limitation of Liability Graco WarrantyAdditional Warranty Coverage