Graco Inc 261820 specifications Motor Diagnostics X5, Motor Diagnostics ProX7 and ProX9, Setup

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Motor Diagnostics (X5 and X7)

Motor Diagnostics (X5 and X7)

If Motor Diagnostics reveal a damaged motor or if motor brushes are shorter than 1/4 in. (6.4 mm) replace the motor using Motor Kit, page 26.

Setup

1.Unplug power cord and Relieve Pressure, page 9.

2.Remove enclosure and disconnect two black motor leads to control board (see Wiring Diagram, page 36).

3.Remove motor fan cover by gently prying up on retention tabs on sides of motor. Motor shaft should spin easily when turning fan. If motor shaft does not turn easily, there is a problem with pump, gears, or motor (see Troubleshooting, page 11).

4.Inspect motor windings for evidence of overheating. If windings appear burnt and motor smells, replace motor.

5.Use Ohmmeter to measure resistance across two black motor leads. Resistance of motor should fall within range of 1.5 to 4.5 ohms. If motor falls outside resistance range or is open circuit, replace motor.

6.Use Ohmmeter to measure resistance of motor leads to motor laminations. If resistance is not open circuit, replace motor.

7.Inspect length of both brushes by looking at brush torsion spring. If spring is not bottomed out in slot for brush spring, brush length is acceptable. If brushes are worn out, replace motor.

Motor Diagnostics (ProX7 and ProX9)

Check for electrical continuity in motor armature, windings and brush as follows:

If Motor Diagnostics reveal a damaged motor or if motor brushes are shorter than 1/4 in. (6.4 mm) or if the motor shaft cannot turn, replace the motor using Motor Kit, page 26.

Setup

1.Relieve Pressure, page 9.

2.Unplug electric cord.

3.Remove enclosure and disconnect motor leads from control card.

4.Remove fan brace.

5.Remove four screws and front cover.

6.Remove yoke and guide rods.

7.Remove gear.

Armature Short Circuit Spin Test

Quickly turn motor fan by hand. There should not be electrical shorts and fan should coast two or three revolutions before stopping. If fan does not spin freely, armature is shorted. Replace motor using Motor Kit, page 26.

Armature, Brushes and Motor Wiring Open Circuit Test (Continuity)

1.Connect red and black motor leads together with test lead.

2.Turn motor fan by hand, about two revolutions per second.

3.If there is an uneven resistance or no resistance, replace motor using Motor Kit, page 26.

312667B

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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 ProX9 Only Component IdentificationProX Sprayers Only X7, ProX7, and ProX9 OnlySG20 SG10 Trigger Locked SG10 Trigger Unlocked SG10 Pressure Control Knob Settings Pressure Relief ProcedureOperation Trigger LockGeneral 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, Prime/Spray Valve Kit, General Problem Low or Fluctuating OutputSwitch Kit, See Control Board Diagnostics, page 25. IfUse Pressure Control Switch Kit, to replace General Problem Excessive Pressure Build UpControl Switch Kit, Setup Relieve Pressure, Motor Diagnostics X5Motor Diagnostics ProX7 and ProX9 SetupProX7, 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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