Magnum 261805 Operation Manual page 24

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.
When paint is sprayed, it runs down the
wall or sags.
When paint is sprayed, coat is not
covering.
24
Cause
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.
AllControl is worn or obstructed with
debris.
Pump check ball is stuck.
Pressure is set too low.
Spray tip 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.
Inlet screen is clogged.
Pump valves are worn.
Material is too thick.
Hose is too long (if extra section is
added).
Coat is going on too thick.
Coat is going on too thin.
Troubleshooting
Solution
Unclog spray tip, page 11.
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
damaged, replace Suction tube.
Take sprayer to Graco/M
AGNUM
authorized service center.
Read Pump does not prime section in
Troubleshooting, page 23
Slowly turn AllControl clockwise to
increase pressure setting which will turn
on motor to build pressure.
Unclog spray tip, page 11.
Clean or replace gun fluid filter.
Replace tip.
Turn AllControl clockwise, to increase
pressure.
Replace spray tip.
Select smaller spray tip.
Replace spray tip.
Replace extension cord. Grounding and
Electrical Requirements, page 4.
Clean or replace spray gun fluid filter.
Clean debris off inlet screen.
Check for worn pump valves.
a. Prime sprayer with paint
b. Trigger gun momentarily. When
trigger is released, pump should
cycle momentarily and stop. If
pump continues 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.
Move gun slower.
Choose tip with larger hole size.
Choose tip with narrower fan.
Make sure gun is close enough to
surface.
312082B