Mix And Integration Tests - Graco XM PFP Setup & Operation

Mix and Integration Tests

Use the following tests to check for proper mix and
integration.
Butterfly Test
At low pressure, normal flow rate, and without a spray
tip installed, dispense a 1/2 in. (12.7 mm) bead of
material onto foil until multiple changeovers of each
metering pump have occurred. Fold the sheet of foil
over the fluid then peel it back and look for unmixed
material (appears marble-like).
Curing Test
Spray a single continuous pattern on foil at typical
pressure setting, flow rate, and tip size until multiple
changeovers of each metering pump have occurred.
3A2776K
Trigger and de-trigger at typical intervals for the
application. Do not overlap or cross over your spray
pattern.
Check curing at various time intervals, listed on the
material data sheet. For example, check for dry to touch
by running your finger along the test pattern's entire
length at the time listed on the data sheet.
Spots that take longer to cure indicate insufficient
integration.
Appearance Test
Spray material onto metal substrate. Look for variations
in color, gloss, or texture that may indicate improperly
catalyzed material.
System Verification
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