Assembly Options For Harness; Connecting The Cylinder; Functioning Of Medium Pressure; Line Coupling - MSA AUER BD 96 mini Manual De Usuario

6.3

Assembly Options for Harness

Back carrying mode with shoulder strap as illustrated in
Fig. 1, 2 and 3.
Fig. 13 (see also Fig. 2 and 3)
Standard delivery mode as in Fig. 1
Back Carrying Mode as Illustrated in Fig. 2 and 3
Pull first carrying strap "long" through slot G3 and arrest
slide in slot G2. Pull second carrying strap through slot G4
and arrest slide in slot G1 (see also Fig. 13). Assure that the
straps are positioned on the carrying plate underneath the
cylinder retaining strap.
Fit hip belt with slides J and J' into the slots E of the carry-
ing plate so that the slots H point upwards.
Pull carrying straps "short" through the belt loops of the hip
belt as illustrated in Fig. 17. The metal slide and the
Z-sewing arrest the straps.
Assemble loop L with lines as illustrated in Fig. 18 and loop
L' as in Fig. 19.
Fig. 18 and 19 show the carrying mode as illustrated
in Fig. 2. For the carrying mode as illustrated in Fig. 3 the
arrangement is mirror-inverted.
Back, Hip Carrying Mode According to Fig. 4 and 5
Here the carrying straps "long" and "short" are not needed.
In the description that follows these are called shoulder
strap.
Fix hip belt with slides J and J' in slots F of carrying plate.
Push loop L through G4 and fix with slide K as illustrated in
Fig. 20.
Push loop L' through G2 and fix with slide K' as illustrated
in Fig. 21. Fig. 21 shows the assembly of the pressure
reducer for the carrying mode illustrated in Fig. 5.
Hip Carrying Mode According to Fig. 6 and 8
Fix hip belt with slides J and J' in slots E of carrying plate
so that slots H point downward.
Fix one shoulder strap in slots G1 and G2. Position lines
with loop L' on slide K as required.
Hip Carrying Mode According to Fig. 7
Assemble hip belt with slides J' and K', respectively J and
K as described in Sect. 6.3.
Shoulder Carrying Mode According to Fig. 9
Fix only one shoulder strap in slots G1 and G2 of carrying
plate.
6.4

Connecting the Cylinder

The cylinder retaining strap is fixed in slots H.
• Open tension lever of cylinder retaining strap by lifting
up. Loosen strap according to required cylinder size
(fig. 22).
• Check sealing areas of cylinder valve and gasket on high
pressure socket for flawless condition.
• Push compressed air cylinder through retaining strap.
• Connecting the cylinder is easier when the high pressure
socket of the pressure reducer is screwed into the
cylinder with the cylinder in vertical position.
• When tightening the high pressure coupling, the antijolt
protection is activated automatically with the last one
and one-half turns.
• Lay apparatus down flat.
• With the tension lever in vertical position, loosely
pretighten the cylinder retaining strap.
18
Attention!
With the tension lever in vertical, open position, under
no conditions should the cylinder retaining strap be
tightened too much, if so, the tension lever cannot be
hinged down to the locking position and the strap can
only be loosened with the tension lever after the cylin-
der has been removed. (Protection against inadvertant
loosening!)
• Hinge down tension lever into horizontal position
(tightening position); now the tension clamp is between
the two knobs of the tension lever (Fig. 23).
• Retighten cylinder retaining strap by pulling loose end
and align Velcro fastener for the loose strap end. Close
Velcro fastener with loose strap end. Hinge down tension
lever totally into locking position. Securing knob of
tension lever locks (Fig. 24).
• Check tight position of cylinder.
When changing compressed air cylinders having the
same diameter, all that is required is to hinge up the ten-
sion lever to an open position. A readjustment of the
retaining strap length or a loosening of the Velcro
fastener is not necessary!
6.5 Functioning of Medium Pressure Line
Coupling
• To Connect
Push plug nipple into coupling until coupling sleeve
engages.
• To Disconnect
Push plug nipple into coupling and at the same time pull
back coupling sleeve. Plug nipple can now be pulled out.
6.6

Condensed Check of Apparatus

Can only be performed with lung governed demand valve
according to EN 137 (see Instructions for Use for lung
governed demand valve).).
6.6.1

Leak Test

Perform condensed check in order described below:
Lung governed demand valve is connected to medium
pressure line.
• Open cylinder valve with approx. two turns of hand-
wheel.
• Read pressure gauge:
- Minimum pressure 270 bar at 300 bar cylinders
- Minimum pressure 180 bar at 200 bar cylinders
• Close cylinder valve (see Sect. 3.3).
• The apparatus is tight if the pressure drop after
1 min does not exceed 10 bar.
This check can also be performed after Sect. 6.5 (with
apparatus donned) (Fig. 25).
6.6.2

Check of Warning Device

• Open cylinder valve briefly and close again.
• Carefully activate flushing mode of lung governed
demand valve until air flows out, observing pressure
gauge at the same time. The warning signal must sound
at the desired opening pressure (factory setting: 105 ± 5
bar).
6.7 Donning the Apparatus (Back Carrying Mode)
• Put apparatus on back with straps fully extended.
• Tighten shoulder straps till carrying plate fits comfortably
(Fig. 26).
• Close hip belt with buckle (Fig. 27). The opening button
of the buckle faces the body.