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As-Needed/As-Required Maintenance
Inspecting the Cuvette Washer Probe
UniCel DxC Systems Instructions For Use A13914
Maintenance
October 2005
Page 10-113
10
5
Observe the wash probe spray pattern during the prime. There should be
three distinct and straight streams in a triangular pattern spraying from
each probe.
Note: If a pattern of distinct streams is not observed during prime, check
for proper water pressure in the hydropneumatic system. If the water
pressure is adequate, check the probe tips for broken glass.
6
Once the priming has stopped, turn the wash station so that the tips of the
probes can be examined. Inspect for glass from cuvettes or other debris,
such as resin beads, which could block the probes. If the probes appear to
be blocked, manually clear the obstruction. A small can of compressed air
may be used to remove blockage by blowing air through probes from the
probe top. If the blockage cannot be removed, call the Clinical Support
Center for further assistance and for instructions on how to replace cuvette
washer probes.
7
Place each of the first three wash probes into three 13 × 100 mm test tubes
(one probe per test tube). Be careful to keep the probes above the surface of
the liquid.
8
Prime the wash lines once by selecting:
• CC [F2]
• Cuvette wash.
Type 1 in the Number of primes to repeat field.
Select <Start Prime>.
At the end of the prime observe the following conditions:
• The amount of liquid that is delivered to the test tubes.
• The volume in tube 1 should be approximately equal to the volume in
tube 2.
• The contents of tubes 1 and 2 should appear to have bubbles.
• The volumes in tubes 1 and 2 should be approximately 20% greater than
the volume in tube 3.
• The contents in tube 3 should appear clear.
Note: Unlike running a test, precise volumes are not required for washing
and rinsing.
Step
Action
, continued
(2 of 3)