Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов, Страница: 318 / 923

Page 15-5
Pilot’s Operating Manual
Original Issue: Feb, 2002
Sub-section 15
EMERGENCY EQUIPMENT
Hawker 800XP Pro Line 21
Section III - SYSTEMS DESCRIPTION
PROTECTIVE BREATHING EQUIPMENT (PBE)
The PBE is installed for use by crew members in the event of fire or smoke from cabin furnishings or
equipment, other than from electrical/electronic sources, producing burning dripping plastic with toxic
fumes. The PBE gives breathing protection for a minimum duration of 15 minutes.
The PBE unit consists of a loose fitting double layered hood constructed of Teflon coated fiberglass
cloth with an overhood of Kynol fabric, a polysulfone housing assembly, a clear visor, an elastic
neoprene neck seal, a scrubber unit and a life support pack.
The PBE unit is stored in a sealed fire retardent polyethylene case which is located in the underfloor
document compartment between the crew seats.
When the Pull To Actuate ring is removed from the unit, chemical decomposition occurs within the solid
state oxygen supply (generator) liberating O
2
which is fed through the primary flow nozzle of the venturi.
This creates a gas flow from the hood through the scrubber unit, which removes excess moisture and
particulates, which is then mixed with the low pressure oxygen in the venturi and fed back into the hood.
Any surplus gas is vented from the hood through a vent valve, which is installed in the scrubber unit.
M6358_0
HA03C
014657AA.AI
FILTER
SCRUBBER
VENT
VALVE
HOOD
EXHALATION
GAS FLOW
TO HOOD
HOOD
PULL TO ACTUATE
RING
SOLID STATE
OXYGEN SUPPLY
(GENERATOR)
RELIEF
VALVE
OXYGEN
FLOW
VENTURI NOZZLE
Figure 1
Protective Breathing Equipment