Graco PRECISIONSWIRL 310554V User Manual

Some solutions require disassembling the dispense valve or orbital dispenser. Always relieve system pressure before 
performing these procedures.

Table 3 provides troubleshooting information. For other troubleshooting situations, call your Graco distributor. 

To reduce the risk of serious injury whenever you are 
instructed to relieve pressure, always follow the Pres-
sure Relief Procedure (see manual 309043).
To reduce the risk of serious injury whenever you are 
instructed to remove, change, check, clean, or han-
dle the nozzle in any manner, always disconnect the 
motor control cable from the control assembly (see 
F

. 8 on page 17), or place the control assembly in 

the MANUAL mode of operation using the CON-
TROL SELECT switch. (See F

. 12 on page 22.)

No material being dispensed

Clogged nozzle

Change nozzle.

No material or pressure

Check fluid delivery system.

Broken or clogged dispense tube

Rebuild the orbital dispenser.

Fault in dispense valve

Refer to Dispense Valve manuals 
308876 or 309376.

Material dispensing but not swirling 
(Motor fault light is on)

Motor not operating

Check wiring connections and cable.

Tube bearing defective; replace tube 
bearing. 

Motor defective; replace motor. 

Check for fluid leak. 

Control assembly failure 

Check analog voltage control setting 
and enable signal.

Check RPM setting.

Check power and fuses.

Check wiring.

Orbiter bearing failure

Replace bearing.

Material dispensing but not swirling

(Motor fault light is off)

Material accumulating on nozzle

Clean nozzle.

Motor is rotating but poor swirl pat-
tern or change in bead size

Flow rate has changed

Check flow rate.

Motor speed has changed

Check analog speed signal.

Material viscosity has changed

Check material parameters.

Partially clogged nozzle

Clean nozzle.