Face Seal Test; Demand Valve Test; Whistle Test; Airline Supply - Scott Safety Ras Asbestos Instructions D'utilisation

4.6

FACE SEAL TEST

1. Hold your breath for 10 seconds and
listen carefully for leaks.
2. If the facemask fails the leak test:
open the cylinder
headharness adjust the facemask and
repeat steps 1 to 3 until a full seal is
achieved.
DO NOT use apparatus that leaks.
4.7

DEMAND VALVE TEST

1. Open the bypass switch and check
that there is a steady flow of air into
the facemask.
2. Close the bypass switch.
4.8

WHISTLE TEST

1. Gradually turn off the airline supply
and check that the warning whistle sounds
when the pressure falls to approximately 4
bar.
2. Turn the airline supply fully on.
4.9

AIRLINE SUPPLY

1. Connect the airline to the apparatus
and close the cylinder valve.
2. If necessary, take a sharp breath to
activate the DV, and then breathe normally.
valve loosen the
5

While in Use

In the unlikely event that the DV fails to
supply air - open the bypass switch and
go immediately to a safe breathable
atmosphere.
In the unlikely event that the DV fails to
supply air, even when the bypass is
open - go immediately to
breathable atmosphere.
DO NOT remove the facemask while in a
hazardous atmosphere.
Ensure that the airline does not become
trapped, snagged, kinked or crushed.
Ensure that the airline air supply is
sufficient for the duration of the tasks to
be undertaken.
When air is supplied by a compressor,
ensure that the air at the air intake is
clean and free of contaminant and
exhaust fumes.
When air is supplied from an airline
trolley, ensure
monitored by a competent person.
Check that filters on the airline supply
system are not clogged.
Ensure filter cover is in place when
breathing from the airline supply.
Leave the hazardous area if you taste, or
smell contaminant.
7
RAS ASBESTOS
a safe
that the trolley is