COMMON QUESTIONS
Here are the answers to questions most often asked by PAS Vr. users
:
What do I do if…
Q.
The unit won't take a sample; the green or yellow indicators do not come on?
A.
The sampling pump may be damaged or the indicator lamp may be faulty.
Otherwise, you might have a dead battery.
Q.
The PAS Vr. detects alcohol, but seems to be giving low readings in the Active
mode?
Your unit might need recalibrating or the mouthpiece may be incorrectly seated.
Caution:
Flow-rate is important. Have subject blow slowly, but steadily for about 5
seconds for best results.
Q.
The display lights up several bars with no alcohol present?
A.
Improper performance of initialization procedure may cause display bars to light.
This can also be due to background levels of alcohol vapor in the air, but it is more
likely that the fuel cell has not recovered from the previous positive reading. Many
hand lotions contain alcohol that may contaminate the air. (See Caution Page 13).
If the problem persists when you check a sample of fresh air, follow the procedure
for clearing overloads on page 14.
Q
The PAS Vr. appears to be too sensitive?
A.
You might be using the instrument improperly, or it might need to be recalibrated.
Q.
The heater won't come on?
A.
The heater may be at optimum temperature, it will continue to cycle on and off.
Otherwise, you might have a low battery or defective thermostat.
Q.
The red LED lamp starts flashing?
A.
The battery is discharged and could give a false reading. Replace it before using
the unit.
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