Graco SaniSpray HP 65, Operation - Repair - Parts, Page: 29 / 40

Troubleshooting
3A7653D 29
Spray Gun stopped spraying
while trigger is pulled.
Sprayer lost prime. See troubleshooting section
“Sprayer runs, but pump does
not prime or loses prime while
in use.” on page 28.
Fan pattern varies dramatically
while spraying.
Pressure control switch is worn
and causing excessive
pressure variation.
Replace Pressure Control or
Pump Assembly. See Parts ,
pages 30-33.
Cannot trigger Spray Gun. Spray Trigger Lock is
engaged.
Rotate Trigger Lock to
disengage trigger lock. See
page 13.
Material is coming out of
pressure control.
Pressure control is worn. Replace Pressure Control or
Pump Assembly. See Parts ,
pages 30-33.
Material leaks down outside of
pump.
Pump packings are worn. Replace Pump Cartridge or
Pump Assembly. See Parts ,
pages 30-33.
Motor is hot and runs
intermittently. Motor
automatically shuts off due to
excessive heat. Damage can
occur if cause is not corrected.
Vent holes in enclosure are
plugged or sprayer is covered.
Keep vent holes clear of
obstructions and keep sprayer
open to air.
Extension cord is too long or
not a heavy enough gauge.
Replace extension cord. See
page 10.
Unregulated electrical
generator being used has
excessive voltage.
Use electrical generator with a
proper voltage regulator.
Motor needs to be replaced. Replace motor assembly. See
Parts - SaniSpray HP 65
(Quick Repair) , page 30.
Problem Cause Solution