Graco Magnum LTS 15 Repair Manual page 19

Problem
Fan pattern varies dramatically while
spraying.
OR
Sprayer does not turn on promptly
when resuming spraying.
Cannot trigger spray gun.
Paint is coming out of pressure con-
trol switch.
Prime/Spray valve actuates automat-
ically 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.
See Thermal Overload, page 12.
332695C
Cause
Pressure control switch is worn and
causing excessive pressure varia-
tion.
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.
Basic Troubleshooting
Solution
Take sprayer to Graco/M
authorized service center.
Rotate trigger safety lever to unlock
trigger lock, page 13.
Take sprayer to Graco/M
authorized service center.
Take sprayer to Graco/M
authorized service center.
ProLTS 19: Replace pump packings.
LTS 15 and LTS 17: Replace pump.
Keep vent holes clear of obstructions
and overspray and keep sprayer
open to air.
Replace extension cord. Read
Grounding and Electric Require-
ments, page 12.
Use electrical generator with a
proper voltage regulator. Sprayer
requires 220-240 VAC, 50/60 Hz.
AGNUM
AGNUM
AGNUM
19