Operation - Graco LineLazer IV 250SPS Installation And Operation Manual

Operation

Operation
Charging Air Tank
1. Start engine and engage clutch. Compressor is now
engaged.
2. If compressor is not needed for a job, move com-
pressor bypass switch (9) to horizontal ON position.
Compressor is now exhausting air into atmosphere.
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3. Move compressor bypass switch (9) to vertical OFF
position to charge air pressure tank. Air tank will
continue to charge to 80 psi (5.5 bar, 55 MPa) then
cycle between 60-80 psi (4.1-5.5 bar, 41-55 MPa).
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4. See bead tank gauge (4) to read air tank pressure.
Pressure from air tank is used to open bead valves
at bead gun.
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9
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9
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4
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Setting Bead Hopper Pressure
The pressure regulator valve (5) controls pressure sent
from the air tank to the bead tank. The regulator is set
to 0 pressure from the factory.
1. Before charging bead tank, confirm that bead tank
lid is fully secured and beads have been loaded into
tank.
2. To increase pressure, pull knob on pressure regula-
tor valve (5) out and turn counter-clockwise. Watch
bead tank gauge (4) pressure and continue turning
valve until desired pressure is met.
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8
3. See bead flow chart to find proper settings for your
application.
4. Various orifices can be used in gun to obtain
different flow rates in conjunction with bead tank
pressure. See Determining Bead Application
Pressure Table, page 24.
4
5
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332230G