Graco Magnum ProX7 User Manual

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

Graco Magnum ProX7 Specifications

General

Brand	Graco
Model	Magnum ProX7
Category	Paint Sprayer
Language	English