Graco ProMix II Operating Manual page 41

11.
Adjust the flow rate.
The fluid flow rate shown on the EasyKey™ Run
screen is for either component A or B, depending
on which dispense valve is open. The fluid supply
lines on the screen highlight to show which dis-
pense valve is open.
Component A Dispensing
Watch the fluid flow rate displayed on the Run
screen while the gun is fully open. Verify that the
flow rate of components A and B are within 10% of
each other.
If the fluid output is too low: increase air pres-
sure to component A and B fluid supplies or
increase the regulated fluid pressure.
310633C
1
Do not use the first 4-5 oz. (120-150 cc) of material as
it may not be thoroughly mixed due to alarms while
priming the system.
12.
Do not allow the fluid supply tank to run empty. It is
possible for airflow in the supply line to turn gear
meters in the same manner as fluid. This can lead to
the proportioning of fluid and air that meets the ratio
and tolerance settings of the machine. This can fur-
ther result in spraying uncatalyzed material.
If the fluid output is too high: reduce the air pres-
sure, close the fluid manifold dispense valves fur-
ther, or adjust the fluid pressure regulator.
Pressure adjustments of each component will vary
with fluid viscosity. Start with the same fluid pres-
sure for component A and B, then adjust as
needed.
CAUTION
Turn on atomizing air to the gun. Check the spray
pattern as instructed in your spray gun manual.
CAUTION
Operation ◆ Start Up
41