Graco Magnum ProX7 User Manual

Troubleshooting
26 312001B
When paint is sprayed, coat is not covering. Coat is going on too thin. Move gun slower.
Choose tip with larger hole size.
Choose tip with narrower fan.
Make sure gun is close enough to surface.
Motor is hot and runs intermittently.
This is NOT a thermal overload condition.
Motor automatically shuts off due to excessive
heat. Damage can occur if cause is not cor-
rected.
Thermal Overload, page 5.
Vent holes in enclosure are plugged or sprayer
is covered.
Keep vent holes clear of obstructions and
overspray and keep sprayer open to air.
Extension cord is too long or not a heavy
enough gauge.
Replace extension cord. Read Grounding and
Electrical Requirements, page 5.
Unregulated electrical generator being used
has excessive voltage.
Use electrical generator with a proper voltage
regulator. Sprayer requires 120VAC, 60 Hz,
1500-Watt generator.
Sprayer was operated at high pressure with
very small tip which causes frequent motor
starts and excessive heat build up.
Decrease pressure setting or increase tip size.
Building circuit breaker opens after sprayer
operates for 5 to 10 minutes.
Too many appliances are plugged in on same
circuit.
Free up circuit (unplug things), or use a less
busy circuit.
Sprayer electrical cord is damaged. Check broken insulation or wires. Replace
electrical cord if damaged.
Extension cord is damaged or too long or not a
heavy enough gauge.
• Plug in something that you know is work-
ing to test extension cord.
• Replace extension cord.
Fan pattern varies dramatically while spraying.
OR
Sprayer does not turn on promptly when
resuming spraying.
Pressure control switch is worn and causing
excessive pressure variation.
Take sprayer to Graco/M
AGNUM authorized
service center.
Cannot trigger spray gun. Spray gun trigger lock is locked. Rotate trigger safety lever to unlock trigger
lock, page 8.
Spray comes out of spray gun in two thick
streams.
Reversible spray tip is in UNCLOG position. Rotate arrow-shaped handle on spray tip so it
points forward in SPRAY position, page 12.
Paint is coming out of pressure control switch. Pressure control switch is worn. Take sprayer to Graco/M
AGNUM authorized
service center.
Prime/Spray valve actuates automatically
relieving pressure through prime tube.
System is over pressurizing. Take sprayer to Graco/MAGNUM authorized
service center.
Paint leaks down outside of pump. Pump packings are worn. Replace pump packings.
Problem Cause Solution

Graco Magnum ProX7 Specifications

General

Brand	Graco
Model	Magnum ProX7
Category	Paint Sprayer
Language	English