Instruments With Pumps Or Aspirator Assemblies - MSA Orion Manual De Operaciones

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Operating Manual
Instruments with Pumps or Aspirator
Assemblies
If using an Orion instrument with a sampling pump or aspirator
bulb assembly, perform a blocked flow test before each day's
use. When performing the test, the appropriate indication must
occur when blocking the flow. If the indication does not occur,
check the instrument flow system for leaks.
Once the leak condition is corrected, perform the blocked flow
test again to verify proper operation before using the instrument.
Refer to the applicable section in this instruction manual for
additional information.
Perform a blocked flow test before each day's use. Failure
to perform a blocked flow test can result in the user being
unaware of the presence of gas.
Do not use the instrument unless the blocked flow indications
occur when performing the blocked flow test. Lack of a
blocked flow indication is a sign that a leak exists and the
sample may not be drawn to the sensors, which could cause
a false reading.
Failure to follow the above can result in serious personal
injury or death.
Instruments with Pumps and Electronic Flow
Indicators
With the pump running, block the sample line inlet or probe inlet.
• The blocked flow flag on the display must illuminate and an
audible alarm must sound.
Instruments with Aspirator Bulbs
With the aspirator bulb squeezed, block the sample inlet or probe
inlet.
• The bulb must not inflate.
• Please note that some instruments with electronic flow
indicators can have optional aspirator bulb accessories.
Chapter 1, Safety Limitations and Certifications
" WARNING
1-5

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