Graco 231-315 Series - User Manual

Questions and Answers

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James JohnsonAug 29, 2025
Why is my Graco Paint Sprayer motor hot and running intermittently?
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  Valerie HallAug 29, 2025
  If your Graco Paint Sprayer motor is hot and runs intermittently, consider the following: * **High Pressure/Small Tips:** Decrease the pressure setting or increase the tip size. * **High Ambient Temperature:** Move the sprayer to a shaded, cooler area if possible. * **Prolonged Inactivity:** Turn off the sprayer whenever you stop spraying for a while and relieve fluid pressure.
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Chad GarciaSep 4, 2025
What to do if my Graco 231-315 Paint Sprayer has an electrical short?
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  Robert ParkerSep 4, 2025
  If your Graco Paint Sprayer is experiencing an electrical short, check the following: * **Wiring and Terminals:** Repair or replace any damaged electrical wiring or terminals. Securely reconnect all wires. * **Inspection Plate Gasket:** Correct faulty conditions related to a missing inspection plate gasket or metal-to-metal contact points. * **Motor Armature:** Replace the motor if the armature is shorted. * **Pressure Control Board:** Replace the pressure control board. * **Pressure Control Wires:** Replace damaged parts if there are damaged or pinched wires in the pressure control.
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Phillip PaulNov 10, 2025
Why won't my Graco Paint Sprayer motor operate?
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  Kimberly RobertsNov 10, 2025
  If your Graco Paint Sprayer motor won't operate, there are several potential causes and solutions: * **Pressure Setting:** Slowly increase the pressure setting to see if the motor starts. * **Clogged Tip/Filter:** If the spray tip or fluid filter is clogged, relieve the pressure and clean them. * **Frozen Paint:** If there's frozen or hardened paint in the pump, thaw it, plug in the sprayer, turn it on, and slowly increase the pressure. * **Connecting Rod Pin:** Ensure the displacement pump connecting rod pin is completely pushed into the connecting rod and that the retaining spring is firmly in the groove. Secure it if needed. * **Damaged Electrical Supply:** Reset the building circuit breaker, replace the building fuse, and try another outlet. * **Damaged Extension Cord:** R...
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Luis RogersNov 16, 2025
What to do if my Graco 231-315 Paint Sprayer has no output?
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  adamatkinsonNov 16, 2025
  If your Graco Paint Sprayer has no output, consider these possible causes and solutions: * **Paint Supply:** Refill the paint supply and reprime the pump. * **Clogged Strainer:** Remove and clean the intake strainer, then reinstall it. * **Loose Connections:** Tighten any loose suction tubes or fittings, using thread sealant or sealing tape if necessary. * **Valve Issues:** Remove the intake valve and clean it. Check the balls and seats for nicks; replace if necessary. Strain paint before using. * **Leaking Packings:** Replace the packings if there's leakage around the throat packing nut, indicating they are worn or damaged. Also, check the piston valve seat for hardened paint or nicks and replace if necessary. Tighten the packing nut/wet-cup. * **Connecting Rod Pin:** Replace...
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Scott HenryNov 22, 2025
How to fix low output on my Graco 231-315 Paint Sprayer?
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  Gail LopezNov 22, 2025
  If your Graco Paint Sprayer has low output, here are several things to check: * **Worn Spray Tip:** Replace the spray tip. * **Electrical Issues:** Reset the building circuit breaker, replace the building fuse. Repair electrical outlet or try another outlet. * **Extension Cord:** Replace with a correct, grounded extension cord. * **Wiring:** Be sure male terminal blades are centered and firmly connected to female terminals. Replace any loose terminal or damaged wiring. Securely reconnect terminals. * **Motor Brushes:** * Tighten terminal screws. Replace brushes if leads are damaged. * Replace worn brushes. * Replace spring if broken. Realign spring with brush. * Clean brush holders, remove carbon dust with small cleaning brush. Align brush lead with slot ...

Graco 231-315 Series Specifications

General

Model	231-315 Series
Type	Airless Paint Sprayer
Max Pressure	3000 PSI
Voltage	120V
Fluid Orifice	0.015 inches
Fluid Compatibility	Latex, Stains
Spray Tip Size	0.015 inches