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Instruction 24-9448 4-11
Operation
4.10 Ending a Combustion Test
WARNING! Burn Hazard. Do not touch the probe after
removing it from the stack. Allow the probe to cool before
handling (about 5 minutes).
1. Remove probe from stack.
2. Allow the pump to run until all combustion gases have been flushed
from the analyzer as indicated by the O
2
reading returning to 20.9%.
4.11 Emptying the Water Trap
The Water Trap / Filter Assembly removes stack-gas condensate, and also
prevents soot from contaminating the internal components of the analyzer.
IMPORTANT: Use the Water Trap /
Filter Assembly in a vertical position
with the gas-flow arrow pointing up as
shown in the illustration to the right.
Empty the water trap chamber after each
combustion test, or stop the test and empty
the chamber if the liquid condensate level ap-
proaches the tip of the riser tube.
To empty the trap, first pull apart the two
halves of the Water Trap using a slight twist-
ing motion; empty the water trap chamber;
and then reassemble the trap.
After each combustion test, also check the
Water Traps filter element. If it looks dirty,
replace the filter per Section 6.2.
To Gas Port
on Analyzer
Gas
Flow
Do not allow water
level to go above
tip of riser tube
Stack Gas
From Probe
To empty water,
pull apart using
a slight twisting
motion
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