Graco 16U277 Operation page 16

Troubleshooting
PROBLEM
Fluid delivery is low.
The sprayer overheats
Spitting from gun
Excessive hydraulic pump noise
*Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid, page 7.
16
CAUSE
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 Bring sprayer to Graco distributor
Large pressure drop in fluid hose.
Paint buildup on hydraulic
components
Oil level is low
Air in fluid pump or hose
Loose intake suction
Fluid supply is low or empty
Low hydraulic fluid level
SOLUTION
Increase pressure, page 4
Clean filter
Tighten intake line
for repair
Use larger diameter or shorter hose.
Clean
Fill with oil.
Check for loose connections on
siphon assembly, tighten, then
reprime pump
Tighten
Refill supply container
Turn sprayer OFF. Add fluid*
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