Hitachi 309067 dimensions Move sprayer to shaded, cooler area if

Page 8

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

 

 

 

 

 

Spray pattern

3.

Pressure adjustment potentiometer (77) by replacing

3.

Replace potentiometer. See page 14..

variations

 

with a new one.

 

 

(continued)

 

 

 

 

4.

Low Output section, page 6.

 

 

 

 

 

 

 

 

 

 

Motor is hot and

1.

Determine if sprayer was operated at high pressure with

1.

Decrease pressure setting or increase tip

runs intermit-

 

small tips, which causes excessive heat build up.

 

size.

tently

 

 

 

 

 

 

 

 

 

 

2.

Be sure ambient temperature where sprayer is located is

2.

Move sprayer to shaded, cooler area if

 

 

no more than 90_F (32_C) and sprayer is not located in

 

possible.

 

 

direct sun.

 

 

 

 

 

 

 

 

3.

Motor.

3.

Replace motor. See page 12.

 

 

 

 

 

Building circuit

1.

All electrical wiring for damaged insulation,

1.

Repair or replace any damaged wiring or

breaker opens

 

and all terminals for loose fit or damage.

 

terminals. Securely reconnect all wires.

as soon as

 

Also check wires between pressure transducer

 

 

sprayer switch is

 

and motor. See page 12.

 

 

 

 

 

 

turned on.

 

 

 

 

2.

For missing motor brush inspection plate gasket (see

2.

Correct faulty conditions.

 

 

 

page 10), bent terminal forks or other metal to metal

 

 

 

 

contact points which could cause a short.

 

 

 

 

 

 

 

3.Motor armature for shorts. Use an

armature tester (growler) or perform motor test. See page 9. Inspect windings for burns.

3. Replace motor. See page 12.

 

4.

Motor control board (22a) by performing motor control

4. Replace board. See page 13.

 

 

board diagnostics on page 13. If diagnostics indicate,

 

 

 

substitute with a good board.

 

 

 

CAUTION: Do not perform this check until motor arma-

 

 

 

ture is determined to be good. A bad motor armature

 

 

 

can burn out a good board

 

 

 

 

 

Circuit breaker

1.

Basic Problems – Electrical’ on page 4.

 

opens after

 

 

 

sprayer oper-

 

 

 

ates for 5 to 10

 

 

 

minutes.

 

 

 

 

 

 

 

Building circuit breaker opens as soon as sprayer is plugged into outlet and sprayer is not turned on.

1.ON/OFF switch (80). Be sure sprayer is unplugged! Disconnect wires from switch. Check switch with ohmmeter. The reading should be infinity with ON/OFF switch OFF, and zero with switch ON.

CAUTION: A short in motor circuit can damage switch and or motor control board (22a).

1. Replace ON/OFF switch. See page 14.

2. For damaged or pinched wires in junction box (20).

2. Replace damaged parts.

Unit will not run

1. Generator “peak” voltage.

1. Use AC power or a different generator.

on generator but

Sprayer will not run if peak voltage is above 165 or be-

 

does run on AC

low 75 VAC for 232916, 232917; above 190V or below

 

power

100V for 232910 – 232913, 232919 or above 260V or

 

 

below 180V for 232918, 232915, 232914, 232665.

 

 

 

 

8309067

Image 8
Contents Airless Paint Sprayer 309067ULTRAr MAX Component Function and Identification 232665, 232918, 232916, 232919Pressure Relief Procedure General Repair InformationElectric Shock Hazard Explosion HazardTroubleshooting GroundingElectrical Intermediate Problem Solving Intermediate Problem Solving Move sprayer to shaded, cooler area if Setup Motor TestArmature Short Circuit Test 232910 232913, 232916Motor Brushes Test brushesDisplacement Pump Repairing pumpRemoving pump See 232912 232913 232915 232917Motor Motor control board diagnostics Pressure Control RepairMotor control board removal LED Sprayer Operation Indicates What to do BlinksPower Cord On/Off SwitchPressure Adjusting Potentiometer 232916, 232917Drive Housing, Connecting Rod, Crankshaft Installation Pressure TransducerPressure Transducer Seal Removal9666A Repair ReplacementDrain Valve Accessories Technical DataDimensions 232914, 232915, 232918, 232919 Complete Sprayer Parts232915, B 232917, B YExtra Warning Labels available free 232914, a 232916, a 232918, a 232919, a 101 232665, a 232918, a 232916, a 232919, a 232914, A, 232665, a 218359 232914Model 232912 and 232913, Series B 51H 235014 ASSEMBLY, drain valve 240519 CONNECTING, rod assy243189 KIT, pump, displacement Includes 55Model 232910 and 232911, Series a 236352 POTENTIOMETER, pressure adj 239979CRANKSHAFT, U-695 Graco Standard Warranty Additional Warranty CoveragePhone Number Toll Free