Bio-Tek ELx405, Руководство оператора

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Troubleshooting Charts
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179
Fluid Delivery, Cont’d
Problem Possible Cause Possible Solution
External valve module
not connected to
washer, or supply
tubing set up
incorrectly.
Check valve module cable and tubing. Unable to
dispense
fluid:
ELx405
models with
the external
valve
module,
cont’d.
Solenoid valve not
opening.
Make sure valve module cable is
plugged into the valve control port on
the back of the washer. If it is
plugged in, contact Bio-Tek TAC.
Dispense height too
high. The aspirate tubes
are too many steps
above the microwells to
prevent overflow.
Change the Dispense Height in the
program (see Define Wash
DISPENSE Program Options in Ch.
3 ).
Dispense flow rate too
low.
Select CW model’s low
flow rate 10 or 11 used
with 384-well plates.
Select a higher flow rate (see Define
Wash DISPENSE Program Options
in Ch. 3 ).
Aspiration tubes hit
bottom of trough during
Prime or Maintenance.
Manifold may not be properly seated
or mounted. Contact Bio-Tek TAC.
In-line vacuum filter
plugged.
If you are using an in-line vacuum
filter, replace or remove the filter.
Loose covers on waste
bottles.
Firmly tighten waste bottle covers.
Dispense rate too fast
for volume selected.
Use slower dispense rate or lower
volume (see Define Wash
DISPENSE Program Options , in
Ch. 3 ).
Plate
overfills
(floods).
Faulty vacuum pump. Contact Bio-Tek TAC.
Note: Monthly performance of the Dispense Precision test is
recommended to measure the variability of volumes dispensed from
tube to tube across the manifold. See Dispense Precision Test
Procedure in Ch. 5
,
Performance Verification/Qualification Tests
.
ELx405 Operator's Guide