Factair F4504 Operating Manual page 13

We can now confirm the flow and pressure is
adequate for your respiratory protective device.
Adjust the system's flow control valve so that the
flow meter registers the required level*, check
the pressure is sufficient for the breathing-air
equipment being used. It is recommended that
this flow is left running for the duration of the
test to simulate the conditions of use. Press the
arrow key to proceed if the flow and pressure
meet the minimum requirements for your RPD.
*Note:- At high flow rates hearing protection should be considered.
Carry out the odour test and smell the air
exhausted from the sintered outlet. If there is a
serious odour problem, fail the sample at this
point of the test by pressing the 'fail' button.
Initiating flows of seriously contaminated air
could result in damage to the instrument. If the
odour test is satisfactory, press the 'pass' button.
The instrument will now commence a 5-minute
purge sequence, during which time an airflow will
be passed through the test port and across the
electronic cells. This clears contaminants from
previous tests and ensures that a representative
sample is being tested.
Once the purge has finished, the CO, CO and
2
Draeger Impactor/oil tube should be inserted into
the corresponding test port and tightened firmly;
ensure the Impactor has an intact protective seal.
This seal must remain in place for the duration of
the test. Press the button in top right hand corner
to start the test.
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