Graco Reactor 2 Hydraulic, Операция

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Spraying
9. Check luid pressure gauges (GA, GB) to
ensure proper pressure balance. If imbalanced,
reduce pressure of higher component by
slightly slightly slightly turning PRESSURE RELIEF/SPRAY
valve for that component toward PRESSURE
RELIEF/CIRCULATION until gauges show
balanced pressures.
SA SB
GA
GB
10. Open gun luid inlet valves A and B.
Fusion Fusion
Fusion
Probler Probler
Probler
NOTICE NOTICE NOTICE
To prevent material crossover on impingement
guns, never never never open luid manifold valves or
trigger gun if pressures are imbalanced.
11. Disengage gun piston safety lock.
Fusion Fusion Fusion Probler Probler Probler
12. Pull gun trigger to test spray onto cardboard. If
necessary, adjust pressure and temperature to
get desired results.
Spray Spray Spray Adjustments Adjustments Adjustments
Flow rate, atomization, and amount of overspray are
affected by four variables.
• Fluid
Fluid
Fluid pressure
pressure
pressure setting.
setting.
setting. Too little pressure results
in an uneven pattern, coarse droplet size, low
low, and poor mixing. Too much pressure results
in excessive overspray, high low rates, dificult
control, and excessive wear.
• Fluid Fluid Fluid temperature. temperature. temperature. Similar effects to luid pressure
setting. The A and B temperatures can be offset to
help balance the luid pressure.
• Mix Mix Mix chamber chamber chamber size. size. size. Choice of mix chamber is based
on desired low rate and luid viscosity.
• Clean-off Clean-off
Clean-off air
air
air adjustment.
adjustment.
adjustment. Too little 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 excessive overspray.
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