Graco Magnum ProX7 Operation page 25

Troubleshooting
Problem
Spray gun stopped spraying.
Pump cycles but does not build up pressure.
Pump cycles, but paint only dribbles or spurts
when spray gun is triggered.
Spray pattern is inconsistent or is leaving
stripes.
Pressure is set at maximum but cannot
achieve a good spray pattern.
Pressure is set at maximum but cannot
achieve a good spray pattern.
When paint is sprayed, it runs down the wall or
sags.
312001B
Cause
Pump was not primed with flushing fluid.
Suction tube is leaking.
Prime/Spray Valve is plugged.
Spray tip is clogged.
Pump is not primed.
Inlet screen is clogged or suction tube is not
immersed in fluid.
Paint pail is empty.
suction tube is leaking.
Prime/Spray Valve is worn or obstructed with
debris.
Pump check ball is stuck.
Pressure is set too low.
Spray tip is clogged.
InstaClean fluid filter is clogged.
Spray gun fluid filter is clogged.
Spray tip is too large or worn.
Pressure is set too low.
Spray tip is worn beyond capability of sprayer.
Spray tip is too large for sprayer.
Spray tip is worn beyond capability of sprayer.
Extension cord is too long or not heavy enough
gauge.
Spray gun fluid filter is clogged.
InstaClean fluid filter is clogged.
Inlet screen is clogged.
Pump valves are worn.
Material too thick.
Hose too long (if extra section is added).
Coat is going on too thick.
Solution
Remove suction tube from paint. Prime pump
with water or flushing solvent-based flushing
fluid, page 9.
Tighten suction tube connection. Inspect for
cracks or vacuum leaks.
Clean/replace prime tube as necessary. Take
sprayer to Graco/M authorized service
AGNUM
center if valve is plugged.
Unclog spray tip, page 12.
Prime pump.
Clean debris off inlet screen and make sure
suction tube is immersed in fluid.
Refill paint pail. Reprime sprayer.
Tighten suction tube connection. Inspect for
cracks or vacuum leaks. If cracked or dam-
aged, replace suction tube.
Take sprayer to Graco/M
AGNUM
vice center.
Read Pump does not prime section in Trou-
bleshooting, page 24
Slowly turn Pressure Control Knob clockwise
to increase pressure setting which will turn on
motor to build pressure.
Unclog spray tip, page 12.
Clean or replace InstaClean fluid filter, page
19.
Clean or replace gun fluid filter, page 19.
Replace tip.
Turn Pressure Control Knob clockwise, to
increase pressure.
Replace spray tip.
Select smaller spray tip.
Replace spray tip.
Replace extension cord. Grounding and
Electrical Requirements, page 5.
Clean or replace spray gun fluid filter, page 19.
Clean or replace InstaClean fluid filter, page
19.
Clean debris off inlet screen.
Check for worn pump valves.
a. Prime sprayer with paint
b. Trigger gun momentarily. When trig-
ger is released, pump should cycle
momentarily and stop. If pump con-
tinues to cycle, pump valves may be
worn.
Thin material.
Remove section of hose.
Move gun faster.
Choose a tip with smaller hole size.
Choose tip with wider fan.
Make sure gun is far enough from surface.
authorized ser-
25