21
309378
Troubleshooting
WARNING/MISE EN GARDE/ADVERTENCIA/ADVERTÊNCIA
INJECTION HAZARD/DANGERS D’INJECTION/PELIGRO DE INYECCIÓN/PERIGO DE INJECÇÃO
To reduce risk of serious injury, whenever instructed to relieve pressure, do steps 1. – 3.; page 17.
Pour réduire le risque de blessure grave lors de chaque décompression, procéder aux opération
1 à 3 de la page 17.
Con el fin de reducir los riesgos de heridas graves cuando tenga que liberar la presión, lleve a cabo
los pasos 1. – 3.; página 17.
Para reduzir o risco de ferimentos graves sempre que for instruído para efectuar a descompressão,
siga os passos 1. – 3.; página 17.
PROBLEM
CAUSE
SOLUTION
Gas engine pulls hard (won’t start)
Hydraulic pressure is too high
Turn hydraulic pressure knob counterclockwise
to lowest setting
Gas engine will not start
Switch OFF, low oil, no gasoline
Consult engine manual, supplied
Gas engine doesn’t work properly
Consult engine manual, supplied
Gas engine operates, but
displacement pump doesn’t operate
Pump switch is OFF
Set pump switch ON
Pressure setting too low
Increase pressure, page 10
Displacement pump outlet filter
(if used) is dirty or clogged
Clean the filter
Tip or tip filter (if used) is clogged
Remove tip and/or filter and clean
Hydraulic fluid too low
Shut off sprayer and add fluid immediately*. See
page 8.
Hydraulic pump worn or damaged
Bring sprayer to Graco distributor for repair
Displacement pump rod seized by
dried paint
Service pump. See manual 309277.
Directional valve not shifting
Set pump switch OFF, then ON. Manual 309379.
Displacement pump operates, but
output is low on upstroke
Piston ball check not seating properly.
Piston packings worn or damaged.
Service piston ball check. See manual 309277.
Replace packings. See manual 309277.
Displacement pump operates but
output is low on downstroke and/or
on both strokes
Piston packings worn or damaged.
Intake valve ball check not seating
properly.
Suction tube air leak
Remove clip and retighten or replace packings.
See manual 309277.
Service intake valve ball check. See manual
309277.
Tighten suction tube
Paint leaks and runs over side of
wetcup
Loose wet–cup
Throat packings worn or damaged
Tighten just enough to stop leakage
Replace packings. See manual 309277
Excessive leakage around hydraulic
motor piston rod wiper
Piston rod seal worn or damaged
Replace these parts. See manual 309379
Fluid delivery is low
Pressure setting too low
Displacement pump outlet filter
(if used) is dirty or clogged
Intake line to pump inlet is not tight
Hydraulic motor is worn or damaged
Large pressure drop in fluid hose
Increase pressure, page 10
Clean filter
Tighten
Bring sprayer to Graco distributor for repair
Use larger diameter hose
The sprayer overheats
Cooler is damaged
Replace
Oil level is low
Fill with oil. See page 8.
Spitting from gun
Air in fluid pump or hose
Check for loose connections on siphon
assembly, tighten, then reprime pump
Loose intake suction
Tighten
Fluid supply is low or empty
Refill supply container
DTS does not display
Loose wiring
Remove cover and correct poor connections
Bad LCD or board
Bring sprayer to Graco distributor for repair
DTS displays error codes
Various over-pressure conditions
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