Negative Pressure Test; Positive Pressure Test - Scott Safety RAS ASBESTOS Benutzerhandbuch

RAS ASBESTOS
2. Tighten the straps in sequence:
bottom, side then top.
tighten as this distorts the faceseal.
4.4
NEGATIVE PRESSURE
TEST
1. Disconnect the airline supply.
2. Attach the filter seal cord to the
neckstrap and fit the filter seal to the mask.
3. Use a thumb to seal the airline
coupling.
DO NOT over-
6
4. Press the filter seal with the palm of
the hand to seal the filter inlet, and inhale.
Hold your breath for 10 seconds. Check
that the facemask pulls on to the face and
does not pull away during the 10 seconds.
5. Re-connect the airline supply.
4.5
POSITIVE PRESSURE
TEST
1. Check that the bypass switch is in the
closed position and inhale sharply to
activate the first breath mechanism.
2. Insert a finger under the mask seal
and check for a steady outward flow of air.
3. Remove the finger and allow the
mask to re-seal.