Hitachi 232133 manual Intermediate Problem Solving

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Intermediate Problem Solving

TYPE OF	WHAT TO CHECK	WHAT TO DO
PROBLEM	If check is OK, go to next check	When check is not OK refer to this column

Low Output	1. Check for worn spray tip.	1. Follow Pressure Relief Procedure
		Warning on page 8, then replace tip.
		See your separate gun or tip manual.

2.Be sure pump does not continue to stroke when gun trigger is released. Plug in and

turn on sprayer. Prime with paint. Trigger gun mo- mentarily, then release and engage safety latch. Relieve pressure, turn off and unplug sprayer.

2. Service pump. See page 22.

3.Release gun trigger. Observe resting position of pump rod (222).

3.If pump consistently comes to rest

with rod (222) fully extended, the piston packings and/or piston valve may be worn. Service the pump. See page 22.

4.	Check electrical supply with volt meter. Meter	4.	Reset building circuit breaker; replace
	should read 105–125 VAC.		building fuse. Repair electrical outlet or
			try another outlet.

5.	Check extension cord size and length.	5.	Replace with a correct, grounded exten-
			sion cord. Note that long lengths and/or
			smaller gauges reduce performance.

6.Check motor brushes. See Electrical – What To Check, item 4, on page 15.

6. See page 21.

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Contents 308801 Models 232133 and 232131, Series aModel 232132 and 232130, Series a Read and Keep for ReferenceTable of Contents SymbolsInjection Hazard Fire and Explosion Hazard Fire Skin Injection Explosion HazardComponent Function and Identification DC aSetup Model 232133 ShownHow to use the gun safety latch How to use the pressure controlHow to use the pressure drain valve GroundingPressure Relief Procedure How to use the RAC IV tip guardHow to remove a tip clog Injection HazardStartup Adjust spray pattern Fire and Explosion HazardShutdown and Care When to flush How to flushFlushing Relieve pressureOpen or drain position Troubleshooting Basic Problem SolvingElectrical Intermediate Problem Solving Replace pin if missing. Be sure retainer Unit will not run on generator but does run on AC power General Repair Information Tool ListMoving Parts Hazard Fire HazardMotor Test SetupArmature Short Circuit Test Test brushes Motor BrushesElectric Shock Hazard Repairing pump Displacement PumpRemoving pump See Remove three drive housing screws MotorMotor control board diagnostics Motor Control BoardMotor control board removal LED Sprayer Operation Indicates What to do BlinksPower Supply Cord On/Off SwitchDrive Housing, Connecting Rod, Crankshaft Not shown Installation Pressure TransducerPressure Transducer Seal RemovalSuction Hose Models 232132 Drain Valve ReplacementRepair Dimensions Technical DataAccessories Complete Sprayer Parts Model 232132 and 232133, Series a51H 235014 ASSEMBLY, drain valve 240519 CONNECTING, rod assy239769 KIT, pump, displacement See manualModel 232130 and 232131, Series a 239979 CRANKSHAFT, U-695Manual 236352 POTENTIOMETER, pressure adjGraco Standard Warranty Additional Warranty CoveragePhone Number Toll Free