Graco Inc 261820 specifications See Control Board Diagnostics

Page 17

Advanced Troubleshooting

Specific Problem

Cause

Solution

 

 

 

 

 

 

Basic electrical problems.

Motor overheated.

Allow motor to cool for 45 minutes. Retry.

 

 

 

 

Electrical outlet is damaged.

Reset building circuit breaker or replace fuse. Try

 

 

another outlet.

 

 

Check electric supply with volt meter. Meter must

 

 

read 85 to 130V AC. If voltage is too high, do not

 

 

plug sprayer in until outlet is corrected.

 

 

 

 

Control board leads are

Replace any loose terminals. Make sure all leads

 

improperly fastened,

and harnesses are firmly connected.

 

improperly mated, or

ProX7 and ProX9: Check pressure control

 

corroded.

 

 

harness connection on front side of drive housing.

 

 

Clean control board terminals. Securely reconnect

 

 

leads.

 

 

 

 

Motor brushes are worn.

Check length of BOTH brushes (brushes do not

 

 

wear evenly on both sides of the motor). Brush

 

 

length must be 0.25 in. (6.4mm). If brushes are

 

 

worn replace motor using Motor Kit, page 26.

 

 

 

 

Motor armature commutator

Check for burn spots, gouges and extreme

 

damaged.

roughness. If damaged or if shorts are evident,

 

 

replace motor using Motor Kit, page 26.

 

 

 

 

Fuse is blown.

Find cause for blown fuse before replacing. Turn

 

 

the motor fan to check for a locked gear or pump.

 

 

Use a continuity meter to check for a short to

 

 

ground caused by a pinched wire.

 

 

ProX7 and ProX9: Replace the fuse with correct

 

 

fuse kit. See List of Kits, page 26.

 

 

X5 and X7: The fuse is not replaceable. Replace

 

 

control board. See List of Kits, page 26.

 

 

 

 

Motor armature shorting.

Check for shorts. See Motor Diagnostics, page

 

 

23. If shorts are evident, replace motor using

 

 

Motor Kit, page 26.

 

 

 

 

Motor armature open circuit.

Check motor leads for continuity. If open circuit,

 

 

check brushes. Use Motor Kit to replace motor.

 

 

See List of Kits, page 26.

 

 

 

 

Control board damaged.

See Control Board Diagnostics, page 25.

 

CAUTION: Do not perform

Replace control board if damaged using Control

 

Board Kit, page 26.

 

control board diagnostics until

 

 

you have determined the

 

 

armature is good. A damaged

 

 

armature can burn out a good

 

 

control board.

 

 

 

 

312667B

17

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Contents Related Manual ProX9 Airless Sprayers 312667BUS Patent 6,752,067 European Patent 1 208 Korean Patent Fold-n-StoreCart ProX Sprayers Only SpecificationsGetting Started Grounding Instructions Fire and Explosion Hazard Equipment Misuse Hazard Thermal Overload InstallationGrounding and Electric Requirements ProX Sprayers Only Component IdentificationX7, ProX7, and ProX9 Only ProX9 OnlySG20 SG10 Operation Pressure Control Knob Settings Pressure Relief ProcedureTrigger Lock Trigger Locked SG10 Trigger Unlocked SG10General Repair Information Grounding and Electric Require Basic TroubleshootingProX7 and ProX9 Insert screw ProX7 and ProX9 Only Read Pump does not prime sectionRequirements, Grounding and ElectricalGrounding and Electrical General Problem Motor Does Not Operate Advanced TroubleshootingSee Control Board Diagnostics, Hazard After Thermal General Problem Circuit Breaker is Tripping Control. See List of Kits, General Problem Erratic Motor OperationElectric Requirements, Switch Kit, General Problem Low or Fluctuating OutputSee Control Board Diagnostics, page 25. If Prime/Spray Valve Kit,Use Pressure Control Switch Kit, to replace General Problem Excessive Pressure Build UpControl Switch Kit, Motor Diagnostics ProX7 and ProX9 Motor Diagnostics X5Setup Setup Relieve Pressure,ProX7, ProX9, X5, Pressure Control Switch DiagnosticsPump Diagnostics Control Board Diagnostics ProX7 and ProX9Control Board Diagnostics X5 Kit Number Models Kit Description List of KitsPart Description Qty X5 Model 262800 Parts ListParts X5 Model X5, Model X7 Model 262805 Parts List X7 Model 41a 41b 41c 67a 47a 41d 67b 85a HUB CAP ProX7 and ProX9 Models 261815 and 261820 Parts ListProX7 and ProX9 Models 261815 ProX7 and ProX9 Models 261810 X5 and X7 Models 262800 Wiring DiagramsProX7 and ProX9 Models 261815 Magnum ProX7 Magnum ProX9 Technical DataFor Graco Canada Customers Graco Standard WarrantyGraco INC. P.O. BOX 1441 MINNEAPOLIS, MN
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