Dräger BG ProAir, Instructions For Use Manual

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20 Instructions for use |
Dräger BG ProAir
Maintenance
The quick connect coupling must engage. When
connecting, make sure that a click is heard. If necessary,
pull on the hose and check whether the connection is tight.
5. Note the assembly date or expiration date on the housing
of the CO
2
absorber where applicable.
5.2.5.4 Installing the breathing air cooler
1. If an ice cooler is used, only insert the ice packs in the ice
cooler just before use. (The breathing circuit does not
open again when the ice packs are inserted.)
If a regeneration cooler is used, insert the block of
14 cooling elements, which are held together by a sealing
cuff, in the breathing air cooler. The filler pipes of the
cooling elements and the handle of the sealing cuff must
point towards the open side of the breathing air cooler.
Wet the sealing cuff if necessary to ensure it slides into the
housing easily and correctly.
2. Close the breathing air cooler (see "Lids of the
regeneration cooler and CO
2
absorber", page 15).
3. Fasten the breathing hose on the breathing air cooler (see
"Breathing hoses", page 14).
4. Place the breathing air cooler in the mounts on the
carrying frame. A clicking sound can be heard when the
breathing air cooler engages in the locking mechanism.
5. Connect the red medium-pressure hose to the breathing
air cooler.
The quick connect coupling must engage. When
connecting, make sure that a click is heard. If necessary,
pull on the hose and check whether the connection is tight.
5.2.5.5 Fitting the connecting piece
The valve discs must be clean and intact and be in contact
with the entire circumference of the valve seat. Replace faulty
valve discs!
1. Place valve discs on the valve seats if necessary.
2. Insert the direction valves in the connecting piece and
rotate slightly so that they slide into the openings of the
connecting piece. The direction valves must finish flush
with the edge of the connecting piece.
The direction valves are identical. The direction of
installation is coded with 3 recesses on one side
and 4 recesses on the other side. The recesses fit into the
corresponding contours in the connecting piece.
The direction arrow on the connecting piece indicates the
direction in which the valve discs must open.
3. Visually inspect the O-ring (1). It must be clean and intact.
Replace the O-ring if faulty.
4. Grease the O-ring with Molykote 111 if necessary so that
the connecting piece can easily be inserted in the full face
mask when donning the closed-circuit breathing
apparatus.
5. Fit the protective cap (2) to the connecting piece.
6. Fit the breathing hoses to the connecting piece.
7. Fasten the breathing hoses on the shoulder straps with
the safety loops.
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