Hitachi 231580 manual Pressure Control

Page 26

Pressure Control

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief

Procedure on page 9.

NOTE: See Fig. 25 for this procedure.

7.Loosely install the screws (63) and then torque them to 21 in±lb (2.4 N.m).

8.Install the front cover (13). Connect the harness

(A) to the motor start board (47).

9.Install the junction box. Be sure no leads are pinched against the motor or by the motor start board.

NOTE: The pressure control (64) cannot be repaired or adjusted. If it has malfunctioned, replace it.

1.	Remove the front cover (13). Remove the screws
	(56). Lower the junction box (59).
2.	Disconnect the harness connector (A) from the
	motor start board (47).
3.	Remove the screws (63). Pull forward on the
	pressure adjusting knob and tip the pressure
	control (64) forward and up to detach it from the
	drive housing (11).
4.	Guide the harness (A) through the motor and drive
	housing and remove the pressure control.
5.	Guide the harness of the new pressure control
	through the drive housing and motor passages.

64

63 1

11

A

13

6. Install the new pressure control. Tip the pressure

control down and back into the drive housing (11).

Do not pinch or damage the harness (A).

59		Torque to
56	1	21 in±lb (2.4 N.m)
		21 in±lb (2.4 N.m)

Fig. 25	02816A

6 87

Image 26

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 pressure drain valve How to use the gun trigger safetyHow to use the pressure control 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 CareFollow the Pressure Relief Procedure on When to FlushHow to Flush FlushingTroubleshooting Basic Problem SolvingIntermediate Problem Solving No output motor runs but pump does not stroke Spray Pattern Variations Armature Short Circuit Test SetupMotor Test Moving Parts Hazard General Repair InformationTool List HOT Surface HazardMotor Brushes Test the brushes Removing the pump See Fig Displacement Pump RepairRepairing the pump Motor Motor Start Board Power Supply Cord On/Off Switch Drive Housing, Connecting Rod, Crankshaft REF a Pressure Control Pressure Transducer Suction HoseRepair ReplacementDrain Valve Graco Phone Number Technical DataDimensions 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