Graco Inc PRO 4500sc, 308131, 224400, 224200 manual Electrical Troubleshooting with SVR

Troubleshooting

Electrical Troubleshooting with SVR

NOTE: Additional gun troubleshooting can be done using the Remote Spraying Voltage Readout (SVRt). See Accessories to order the SVR and the RF transmitting power supply.

Problem

Cause

Solution

Lower than normal voltage output

Insufficient air pressure to the turbine alternator.

Increase the air pressure to the gun.

Faulty turbine alternator.	Replace the turbine alternator. See page 28.
Improper distance between gun and	Adjust the spraying distance to 8–12 in.
workpiece.	(203–305 mm).
Fluid resistivity is too low.	Check the fluid resistivity with a paint meter
	and probe.

Dirty gun.

Clean the gun. See page 14.

Higher than normal voltage out-	Faulty gun resistance.	Check the gun resistance. See page 20.
put
	Fluid resistivity higher than normal.	Check the fluid resistivity with a paint meter
		and probe.

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