Graco Reactor 3 E-XP1 Operation page 40

Operation
12. Open the A and B gun fluid valves.
Fusion Fusion Fusion
NOTICE
NOTICE NOTICE
To prevent material crossover on
impingement guns, never open fluid
manifold valves or trigger gun if pressures
are imbalanced.
13. Disengage the gun piston safety lock.
Fusion Fusion Fusion
40
14. Pull the gun trigger to test spray onto
Spray Adjustments
Spray Spray
Flow rate, atomization, and amount of overspray
are affected by four variables:
Probler
Probler Probler
Fluid pressure
• Fluid Fluid
results in an uneven pattern, coarse droplet
size, low flow, and poor mixing. Too much
pressure results in excessive overspray, high
flow rates, difficult control, and excessive
wear.
Fluid temperature.
• Fluid Fluid
pressure setting. The A and B temperatures
can be offset to help balance the fluid
pressure.
Mix chamber
• Mix Mix
based on desired flow rate and fluid viscosity.
Clean-off air
• Clean-off Clean-off
air results in droplets building up on the front
of the nozzle, and no pattern containment
to control overspray. Too much clean-off
air results in air-assisted atomization and
Probler
Probler Probler
excessive overspray.
cardboard. If necessary, adjust pressure and
temperature to get desired results.
Adjustments
Adjustments
pressure setting. setting. Too little pressure
pressure setting.
temperature. Similar effects to fluid
temperature.
chamber size. size. Choice of mix chamber is
chamber size.
air adjustment. adjustment. Too little clean-off
air adjustment.
3A8500E