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Operation
7. Adjust the main pump air regulator (MB) to the
necessary spraying pressure and apply a coating to
a test panel.
NOTE: Run System Verification tests everyday
(see page 43).
NOTE: Excess pressure increases overspray and
pump wear.
8. Check and record gauge readings frequently during
operation. A change in gauge readings indicates a
change in system performance.
NOTE:
•
A pressure drop occurs during pump stroke
changeover. It should be quick and synchronous.
•
Flush the mix manifold as necessary during the
day's operation.
9. Follow Flush Mixed Material, page 37 when you
are finished spraying or before potlife expires.
NOTE: Mixed material potlife or working time decreases
with increased temperature. Pot life in the hose is much
shorter than the dry time of the coating.
36
B Component Adjustable Fluid
Restrictor
The B side restrictor (FJ) reduces momentary "lead/lag"
ratio imbalance of the A and B flow into the static mixer
tubes when the gun opens. The error is caused by
differences in viscosity, volume, and hose expansion.
The restrictor is used primarily when the mix manifold is
positioned remotely from the machine with a short mix
hose to the spray gun. It can also be used in the ratio
check procedure.
Restrictor
Stem
FJ
FB
If the mix manifold (FB) is mounted on the machine, you
do not need to adjust the restrictor. Leave the restrictor
stem open two turns minimum from fully closed.
To Adjust the Restrictor:
Adjust the restrictor stem clockwise while spraying until
you see a slight rise in the B side pressure gauge. The
point where the pressure starts to rise is a good
adjustment setting.
Unless you are dispensing directly out of the mix mani-
fold and mixer, this is an approximate adjustment.
See your mix manifold manual for more information.
3A0420ZAF
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