Fishman AIRFREE LDS9000 - Manual (Page 18)

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Suggested Tips
• The faster you dispense the more backoff you will need. That’s because
the speed at which the piston is traveling exceeds the flow rate of the
material out of the dispense tip. Therefore, creating internal pressure. More
reverse motion is required to get the internal reservoir pressure back to
zero. We recommend you start with a slow rate and progress from there.
• The LDS9000 positively displaces fluids. That means if you program
.02cc’s of fluid, you will get .02cc’s out of a very small tip or a large tip.
The only difference is trying to force the fluid through a very small tip will
take twice as long. We recommend you increase the fluid flow by using our
FreeFlow
TM tapered tip.
• A change in the dispense rate will change your deposit size. When the
piston moves forward it often exceeds the flow rate of the fluid, thus
creating pressure buildup. The best way to rapidly relieve that pressure is to
apply reverse motion. When the dispense rate is doubled the fluid has half
the time to flow before reverse motion, therefore the deposit size becomes
smaller. Conversely, when the dispense rate is cut in half the fluid has twice
the time to flow before reverse motion, therefore the deposit size becomes
larger. The only way to maintain the same deposit size at all speeds is to
adjust all parameters.
First Shot Set Up
•Follow the steps listed in the LDS9000 Rapid Setup Guide. We
recommend you work with the Fishman test fluid provided in your
dispenser to establish the first deposit.
•When priming your dispense tip watch how long the fluid flows out of
the tip. Little to no ooze, start with a minimum amount of backoff (1-10
steps). Lots of ooze, start with a higher amount of backoff (10-25 steps)
and adjust from there.
•Start with a slow dispense rate and adjust your dispense volume and backoff
until you achieve the right size deposit. Once your deposit is stabilized try
adjusting the speed to your liking, watch the effect on your deposit. Return
to volume and backoff to tweak the deposit size. Always allow the deposit to
stabilize via 5 or 6 dispenses before making the next adjustment.
Operating Tips