Dräger BG ProAir, Instructions For Use Manual

Page: 14 / 34

14 Instructions for use |
Dräger BG ProAir
Maintenance
5 Maintenance
5.1 Maintenance intervals
Dräger recommends the following maintenance intervals.
Observe any national guidelines that may stipulate different
intervals.
5.2 Maintenance work
5.2.1 General notes on handling
Breathing hoses
The breathing hoses are secured on the connecting piece, on
the CO
2
absorber and on the breathing air cooler with
bayonet rings.
– To remove, rotate the bayonet rings anti-clockwise and
use the flap to pull the breathing hoses off the relevant
component.
– Every breathing hose has one thick, narrow flap and one
thin, wide flap. The flaps, connecting piece, CO
2
absorber
and breathing air cooler are each marked with a triangle or
a circle. The end with the narrow flap (marked with a
triangle) is secured to the connecting piece on the side
with the exhalation valve (marked with a triangle) and to
the breathing air cooler (marked with a triangle). The end
with the wide flap (marked with a circle) is secured to the
connecting piece on the side with the inhalation valve
(marked with a circle) and to the CO
2
absorber (marked
with a circle). When fitting the items, make sure that the
width of the flap corresponds to the width of the recess
and that the markings match.
● Push the end of the breathing hose onto the
connection. The flap must be positioned in the recess
when tightening the bayonet ring.
● Rotate the bayonet ring clockwise onto the connection
to fasten the breathing hose. The breathing hose is
correctly fitted when a clicking sound is heard while
tightening and the bayonet ring has some play. The
bayonet ring (1) must sit flush with the edge of the
relevant connection.
Medium-pressure hoses
The medium-pressure hoses are connected to the CO
2
absorber and to the breathing air cooler with quick connect
couplings (see overview graphic at start of instructions, items
5, 6, 7). The quick connect couplings can be released from
the CO
2
absorber and breathing air cooler without using tools
and are self-locking.
If a pneumatic hose is inserted into a connector multiple
times, it must be verified that the pneumatic hose can
continue being used.
After use Every 6
m
onths
Annually Eve
ry 5
yea
rs
E
ve
ry1
0y
e
ar
s
Visual inspection of all parts,
Testing the functional integrity and
tightness of the closed-circuit
breathing apparatus
X
X
1)
1) Applies for stored apparatuses.
Cleaning and disinfecting the
closed-circuit breathing apparatus
X
X
1)
Replacing the CO
2
absorber X
X
2)
2) Applies for CO
2
absorbers that are installed in a closed-circuit breath-
ing apparatus and whose functional integrity and tightness were
tested with the apparatus. The protective cap must be attached to the
connecting piece of the closed-circuit breathing apparatus.
Hydrostatic testing of the com-
pressed oxygen cylinder
3)
3) by a notified body
X
Major overhaul
4)
4) only performed by expert personnel
X
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