Troubleshooting
45
nose clip can assist the subject (be sure that the nose clip does not interfere with the fit of the
respirator).
4.
Improper breath hold. Instruct the user to relax, take a comfortable breath and hold as if going
under water.
Trouble Passing Fit Test
What do I do when people are not passing a fit test?
This problem could include several variables, but most likely would fall into three categories:
instrument failure, respirator fit, or adapter fault. If it's a one-time problem when other people
can pass, the answer simply may be that the respirator is not a good fit on the subject. When
several subjects can't pass, look at the other variables:
1.
Instrument Failure
a.
You must do the Daily Verification Check at the beginning of each day.
b.
If the QuantiFit2 passes the daily verification procedure, this assures that the instrument is
operating properly and measuring within tolerance.
c.
If the QuantiFit2 is not able to complete the Daily Verification Check. Please contact OHD
Tech Support to troubleshoot before sending in for service.
2.
Respirator/Fit Fault
a.
The Operator must first determine that there is a proper fit. Any facial hair, hair getting
anywhere under the respirator seal, temple hair too far forward, sunken temples or facial
scarring, protrusions, or blemishes, having the respirator too loose or too tight, all can be
reason enough to keep the QuantiFit2 from pulling a negative pressure within the
respirator. There are other obstacles that can come into play which are too numerous to list.
With more experience fit testing, it's easier for one to see potential problems with fit.
b.
To further check on the respirator fit, do a user seal check for 10 seconds. Press the Seal
Check button located on the test screen and take in a breath and hold the pressure
allowing for plenty of suction on the respirator. If after 10 seconds the
respirator “drops”
when releasing the Seal Check button, this indicates a good fit. If after the same procedure
there is no drop or "falling away" from the face, this indicates that all the air leaked out
through a leak source and is the reason for a failed test step.
c.
Exhalation valves may be dirty or creased allowing air to be pulled into the respirator. While
the inhalation valves must be removed or propped open, the exhalation valve must remain
in place and maintain a good seal. Clean the side of the valve that faces the interior of the
respirator. This can be done with water and will remove any small obstruction that is keeping
the valve from closing in an air-tight manner.
d.
On the respirator, the apex of the head straps should sit on the crown of the head and not
off to one side or the other.
e.
Check the manufacturer’s recommendation for properly donning a respirator and
ensure
that the user has been properly trained in donning that respirator as part of the regulations.
All straps must be pulled with equal tension at each point.
Summary of Contents for QuantiFit 2
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