TM
High Efficienc
y Filter
5
PA1FG High Efficiency Filter
Air-Purifying Element
Principle of Operation
The PA1FG high efficiency filter element is NIOSH
approved when used in the PA20 PAPR for respiratory
protection subject to the limitations of the NIOSH approval.
HE particulate filters are 99.97% effective against all
particulate aerosols.
Filters are supplied in quantities of 3 filters and gaskets
per box.
NOTE
The following abbreviation is approved by NIOSH
to indicate the particulate filter approval for
PAPRs:
HE = High Efficiency Particulate Air Filter for
Powered Air-Purifying Respirators
Replacing the PA1FG High Efficiency
Filter
The high efficiency filter and gasket must be replaced
when:
1. An airflow check with the airflow indicator shows that
any part of the ball is blow the PASS line (see
instructions on page 4);
2. When the high efficiency filter has been damaged; or
3. In compliance with any applicable administrative
procedures.
Carefully remove a new HE filter from its packaging.
NOTE
Care must be taken to avoid touching or allowing
any objects to contact the exposed filter pleat.
Hold the filter only by its edges.
Check that the filter has a filter gasket and that it is
positioned flat behind the filter lip.
NOTE
Always use a new filter gasket when refitting or
changing a filter. Unclip the blower latches and
remove the back cover and belt assembly from the
blower unit
(see Figure 4)
.
Check that the mating faces of blower unit body and the
back cover are free from debris or any deep scratches.
Remove the old filter and gasket and discard in accordance
to local, state and federal guidelines..
Slide the filter and filter gasket into the blower unit
(see
Figure 5)
.
Check that the filter gasket is positioned flat on the rear of
the blower.
Refit the back cover and belt, ensuring that the lip of the
cover fits over the blower edges and the male and female
locking latches are located together and lined up properly.
The back cover will fit on the unit in only one direction. The
latches will not line up properly if the back cover is put on
the wrong way.
Snap shut the blower latches once the back cover is
oriented properly, and check to make sure that the latches
are secure.
Refer to the “Checking Air Flow with the Airflow Indicator”
section on the previous page for instructions on checking
the filter for clogging.
Figure 4
Figure 5
