MSA VAUTEX ELITE 3S-L, Руководство пользователя

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5.4 Tightness test of the protective suit
Inflate the protective suit, using only compressed air which is clean
and free from oil.
 Inflate the suit to a pressure of 18 mbar.
 Stabilising time: 3 minutes.

Reduce the pressure to 16 mbar (test pressure).

Maximum admissible pressure drop after 3 minutes: 2 mbar.
At the end of the test reassemble the valve discs and associated
covers. For valve tightness test see section 6.1
5.5 Checks of the mask
The tightness tests for the 3S-PF mask incorporated into the pro-
tective suit, and the test of the exhalation valve, are carried out i.e.
using the MSA Multitest Plus model control apparatus.
Mask tightness:

Create a negative pressure of 10 mbar
 The permissible variation in pressure within one minute must not
exceed 1 mbar.
Exhalation valve (only positive pressure mask):

Check that the exhalation valve of the mask opens at a pressure
> 4,2 mbar; if this is not the case replace the valve spring.
Note:
in order to avoid erroneous readings the test should be conducted
in a room free from drafts.
5.6 Checks in cases of leaks
 Are the test connections properly tightened?

Is the zipper completely closed?

Are the valve seats (17), the connection of the threaded ring (14)
with the slide ring (15) assembled correctly? (Fig. 1).
5.7 Visual checks
 Check the conditions of the material, and the protective suit for
completeness. Slight abrasions as well as slight discolourations
on the outside of the material do not reduce its characteristics of
protection against chemicals.
The emergence of signs due to ageing during storage does not
reduce the quality of the boots.
Any variation in colour (tending to brown) of the adhesives near the
seams, due to UV rays from light, does not reduce the protective
performance of the suit.
5.8 Maintenance intervals
Intervals
Work to be Prior to After each Every Every
performed each use use 6 months 2 years
Cleaning, disinfection
and maintenance
X X
Function and
tightness test
X X
Valve disc replacement X
Exhalation valves
O-ring replacement
X
Check by user X
Zipper maintenance
(Sect. 6.2)
X X
All maintenance work carried out must be noted on the appropriate
record card.
For maintenance of the mask refer to the appropriate Instructions
for Use.
5.9 Repairs
Repairs of suit material and seams as well as replacement of the
zipper may only be performed by the manufacturer or authorised
service centres.
Only original MSA AUER spare parts may be used for repairs.
6 Maintenance work
6.1 Suit valves
After each repair or cleaning, a tightness test of the valves is to be
done using the kit for tightness of the masks in combination
 Create a negative pressure of 10 mbar

The maximum pressure variation within one minute must not
exceed 1.0 mbar.
In case of a leak either the valve disk or if necessary the entire
valve assembly must be replaced. To do this, the threaded ring is
unscrewed from the inside of the suit using the correct key (see
Catalogue Numbers). Regardless of the above measures, it is
recommended to replace the valve discs every 2 years (fig. 1).
6.2 Zipper
After each cleaning or disinfection, the zipper is to be lubricated
with a grease stick or spray zipper spray, in such a way that only
one layer of lubricant covers the metal links. See figure 6 for the
area which is to be lubricated.