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SYMPTOM
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The 2700 SELECT Sipper Tube misses the External Chamber.
POSSIBLE CAUSES: (1) The 2700 SELECT Sipper Tube has become misaligned, possibly through a
physical disturbance or (2) the Station # is assigned to some number other than "5".
CORRECTIVE ACTIONS: (1) Realign the Sipper Tube. Refer to the 2700 SELECT USER’S MANUAL
for instructions. (2) Recheck for the appropriate assignment of the Monitor Station (Section 5.2.1).
SYMPTOM
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The 2700 SELECT does not appear to recognize the Monitor Station.
POSSIBLE CAUSE: The 2730 Monitor Pump has not been assigned a purge time.
CORRECTIVE ACTION: Access the 2700 SELECT setup menu and assign a nonzero value to External
Pump Purge Time (Section 5.2.1).
SYMPTOM
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The 2730 Monitor (Purge) Pump is running, but no sample flowing.
POSSIBLE CAUSE: There is an obstruction in the sample tubing or external chamber.
CORRECTIVE ACTION: Remove the sample tube connected to the chamber inlet port while the pump is
running. If fluid flows, the obstruction is in the chamber or the waste line. If fluid does not flow, try
"massaging" the tubing to try relieving the blockage. If unsuccessful, begin disconnecting tubing and
forcing air or fluid through with a syringe until you locate the blockage.
SYMPTOM
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Bubbles appear at the top of the 2730 External Chamber when the Monitor Pump runs.
POSSIBLE CAUSE: The 2730 Monitor Pump tubing is not configured properly and fluid in the waste line
is trying to flow backwards.
CORRECTIVE ACTION: Check Section 8.1 and correct tubing configuration.
SYMPTOM
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Monitor Station results appear to be lower than expected and excess air is observed in the 2700 SELECT
sample chamber.
POSSIBLE CAUSE: The 2700 Sipper Tube is not properly aligned in the vertical plane, i.e., not moving
down far enough into external chamber. Some sample, then air is being aspirated.
CORRECTIVE ACTION: Realign the 2700 Sipper Tube so that the end of the tube appears to extend past
the temperature probe, as viewed through the front of the clear 2700 Sample Chamber. Refer to the 2700
SELECT USER’S MANUAL for Sipper Tube Alignment.
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