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Adjust B Machine Outlet Restriction
312359J 33
Adjust B Machine Outlet
Restriction
Adjust the restriction stem on mix manifold, or on restric-
tor valve if mix manifold is remote, to optimize the B side
dosing control window. The goal is to create a near con-
stant flow on the A side and frequent dosing or a near
constant flow on the B side.
1. With material at normal spray temperature and tip
installed on spray gun, trigger gun for at least 10
seconds.
2. Navigate to Ratio Mode screen. See Ratio Mode,
page 71. Check bar graph.
The ratio bar graph is shown when is pressed.
This screen is used to show the accuracy of the spray
ratio. The bar should be in the center three segments
when the restrictor is adjusted.
3. Press to go to the restrictor adjustment screen.
NOTE:
• For remote mix manifolds, set the machine restrictor
first. Then close the remote mix manifold restrictor
to approximately the same setting, or until the
restrictor screen starts to move to the left.
• It is normal for the bar to move on the graph while
spraying. If the adjustment is too far off, you will
receive an alarm. If the ratio will not hold, you will
receive alarm R4B or R1B. See Alarm Codes and
Troubleshooting, page 52.
• If the bar swings back and fourth and you are using
feed pumps, the feed pressure may be too high.
Keep feed pressure under 250 psi (1.75 MPa, 17.5
bar). High pressure pumps receive a pressure boost
that is twice the pressure feed on the upstroke only.
High feed pressures can cause pressure swings
between A and B. The system will compensate, but
the bar graph will the show the swing.
The restrictor adjust bar graph is shown when is
pressed. This screen is used to adjust the restrictor.
• At maximum fluid flow, the bar should be in the cen-
ter.
• At flows less than maximum, the bar should be on
the right side.
• The bar should never be on the left.
• Configure the system at maximum fluid flow. Then
turn the restrictor clockwise if the bar graph is on the
right and counter-clockwise if the bar graph is on the
left.
NOTE: A pump dosing size, shown on the upper left cor-
ner, will be minimum when the restrictor is adjusted cor-
rectly. Once the restrictor is set for a given ratio and
material, it should be locked in place and left alone.
Mix Manifold
Restriction
Stem
Resin
dosing
size
Combined
flow rate