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Maintenance
8 312781E
Mix Manifold Valve Settings
To open dispense or purge valves, turn hex nut (E)
counterclockwise. To close, turn clockwise. F
IG. 4.
Maintenance
Daily
• Purge the mixing system at the end of production.
• Check and refill fluid supplies for all components
and solvent.
• Inspect the manifold and fluid line components for
leaks.
• Make sure meter cables and air pilot lines are
securely connected.
• Check that there is no fluid in the air purge line.
Weekly
• Clean and inspect the integrator mixer assembly.
Follow Remove the Integrator Mixer, page 10.
Ensure that the mixer (46) holes are not clogged.
The cleaning frequency required depends on the
fluid being mixed.
• Clean and inspect fluid and air filters.
Preventive Maintenance
Schedule
At least once a year, take apart the mix manifold and
dose/purge valves and sampling valves. Clean and
inspect them. Replace o-rings and seals. Repair kits are
available from Graco. See Repair, page 10.
F
IG. 4. Dispense Valve Adjustment
E
TI11581a
Table 2: Mix Manifold Valve Settings
Valve Setting Function
Dose Hex nut
(E) 1-1/4
turns out
from fully
closed
Limits maximum fluid flow rate
into integrator and minimizes
valve response time.
Purge
Shut-
off
Fully open
during
Run/Mix
operation
Closes component ports to
integrator during ratio check
or meter calibration. Open
ports during Run/Mix opera-
tion.
Sam-
pling
Fully
closed
during
Run/Mix
operation
Open to dispense compo-
nents while calibrating
meters. Do not open sampling
valves unless fluid shutoff
valves are closed.
To reduce the risk of injury, including fluid injection, fol-
low the Pressure Relief Procedure in your proportion-
ing equipment manual before cleaning, checking, or
repairing equipment.