Hitachi EM 490 dimensions Replacing the Electric Motor & Capacitor

Page 20

REPLACING THE ELECTRIC MOTOR & CAPACITOR

WARNING

To reduce the risk of serious bodily injury, including fluid injection or splashing in the eyes or on the skin, or injury from moving parts, always follow the Pres- sure Relief Procedure Warning on page 14 be- fore checking, adjusting, cleaning or shutting off the sprayer. Unplug the power supply cord.

1.Disconnect the hose (52) at the displacement pump. See Fig 12.

2.Remove the drive assembly as described on page 19. The pump, connecting rod and bearing can stay as- sembled to the drive assembly.

3.Drive out the pin (27) and remove the gear (37). See Fig 18.

4.Remove the pressure control cover (41). Disconnect the motor leads. See Fig 19.

5.Unscrew the connector (130 and 303) nuts on both ends of the conduit (1).

6.Remove the screws (7), nuts (3) and lockwashers (4). Lift the motor while carefully guiding the wires through the connector (303) in the pressure control. Remove the conduit (1) from wires. See Fig 19.

CAUTION

Always pull the motor leads one at a time to avoid loosening the terminals.

7.Loosen the locknut and unscrew the connector (130) from the motor, being careful to avoid twisting the wires. See Fig 19.

8.Install the new motor in the reverse order of removal.

NOTE: A circuit board (23f) is included with a new motor. See page 21 for installation.

Capacitor

1.Remove the cover (A) of the capacitor. See Fig 18. Remove the flag connectors from the old capacitor (23d). Connect the flag connectors of the new capaci- tor and replace the cover.

NOTE: The replacement capacitor includes a new resis- tor, installed.

A

 

23d

23

(located under cover A)

7

 

27

37

4

3

Fig 18

 

23

BLACK

MOTOR

 

 

 

 

LEADS

 

 

 

 

 

GREEN & YELLOW

 

1

 

RED

 

 

 

PINK

 

130

 

BROWN

 

316

 

303

 

 

23c

 

 

 

 

 

 

23f

 

GREEN

WHITE

BLACK

 

 

 

301

 

 

 

23a

50

41

133

304

Fig 19

 

 

 

 

 

POWER SUPPLY CORD LEADS

20307-735

Image 20
Contents Model 231±002, Series C Model 231±490Model 220±679, Series C Model 231±050General Safety Spray Gun Safety DevicesSpray Tip Safety Medical Alert±±Airless Spray WoundsFlushing Safety System PressureFluid and Solvent Compatibility Hose Grounding ContinuityConsignes générales de sécurité Soins médicauxDispositifs de sécurité du pistolet Consignes de sécurité concernant lajutage du pulvérisateurPression Compatibilité chimique des corpsContinuité de la mise à la terre des tuyaux Mise à la terre ou à la masseEL Rociado a Alta Presion Puede Causar Graves Lesiones Seguridad generalTratamiento médico Aparatos de seguridad de la pistola pulverizadoraPresión del sistema Compatibilidad de fluidoPuesta a tierra Seguridad durante el lavadoSetup Connect the hose and gun See FigPressure Relief Procedure OperationPrime the sprayer with paint Install the spray tip and tip guardAdjusting the spray pattern Refer to Fig Cleaning a Clogged Tip Shutdown and CareWhen To Flush How To FlushFlushing Guidelines Startup after storageApplication Methods Correct WrongProblem Cause Solution Troubleshooting GuidePressure Relief Procedure Displacement Pump Removing the Pump. See FigReinstalling the Pump. See Fig Reassembly NotesReassembly Procedure Replacing the Connecting ROD and Bearing Replacing the Drive Assembly Replacing the Electric Motor & Capacitor CapacitorReplacing the Pressure Control & Circuit Board Follow the Pressure Relief Procedure Warning on Pressure Control AdjustmentService Tools Needed If the pressure is not 2350 psi 164 bar Parts Drawing ± Pressure Control Circuit Board ApplicationsDisplacement Pump Parts Drawing and List NO. Part no Description QTYParts List ± Sprayer with Upright Cart Parts DrawingModel 231±002, Series C, Basic Sprayer Model 231±490, Complete SprayerParts Drawing ± Sprayer with Upright Cart Model 231±050, Complete Sprayer Parts List ± Sprayer with Loboy CartModel 220±679, Series C, Basic Sprayer Parts Drawing ± Sprayer with Loboy Cart Accessories Service InformationTechnical Data DimensionsImportant Phone Numbers To you 1±800±328±0211 Toll FreeGraco Warranty and Disclaimers Graco INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440±1441