Graco MAGNUM LTS 15 257060 Operation Manual page 31

Problem
Cannot trigger spray gun.
Paint is coming out of pressure con-
trol switch.
Prime/Spray valve actuates automati-
cally relieving pressure through prime
tube.
Paint leaks down outside of pump.
Motor is hot and runs intermittently.
Motor automatically shuts off due to
excessive heat (damage can occur if
cause is not corrected).
Thermal Overload, page 7.
313034H
Cause
Spray gun trigger lock is locked.
Pressure control switch is worn.
System is over pressurizing.
Pump packings are worn.
Vent holes in enclosure are plugged
or sprayer is covered.
Extension cord is too long or not a
heavy enough gauge.
Unregulated electrical generator
being used has excessive voltage.
Troubleshooting
Solution
Rotate trigger safety lever to unlock
trigger lock, page 10.
Take sprayer to Graco/M
authorized service center.
Take sprayer to Graco/M
authorized service center.
Replace pump packings.
Keep vent holes clear of obstructions
and overspray and keep sprayer
open to air.
Replace extension cord. Read
Grounding and Electrical
Requirements, page 7.
Use electrical generator with a proper
voltage regulator. Sprayer requires
120VAC, 60 Hz, 1500-Watt
generator.
AGNUM
AGNUM
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