274 | Chapter 6: Troubleshooting
Fluid Delivery
Problem
Possible Cause
What To Do
Unable to dispense
fluid.
Inlet tube not connected
at manifold or at bottle.
Check all tubing.
Supply tube inside the
supply bottle is kinked or
disconnected.
Straighten or connect supply tube.
Optimize Performance on page 98
Clogged dispense tubes on
the manifold.
Remove and clean the manifold.
Inlet tube is not connected
to the bottom port of the
syringe.
Connect the inlet tube to the lower
port of the syringe pump.
Outlet tube is not
connected to the top port
of the syringe.
Connect the outlet tube to the top
port of the syringe pump.
Check valve flow direction
is incorrect.
Compare the flow direction of the
check valves,
Dispenser Check Valves on page
70
Check valves are stuck
closed.
Clean or Replace the Check Valves
on page 204
No fluid.
Fill bottles with appropriate fluid.
System not primed.
Run
S-DAY_RINSE
once or twice for
one or both syringes.
Highly viscous fluid.
Apply a
Pump Delay
to improve
performance when dispensing highly
viscous fluid, i.e. edit the dispense
or prime step to set a 500 msec.
delay.
Faulty syringe pump.
Contact BioTek TAC.
Set screw not tightened
on the syringe pump
piston.
Reinstall the syringe head.
Plate overfills
(floods).
Dispense height too high.
Change the Dispense Z-axis position
(height).
MultiFlo™ FX Multi-Mode Dispenser