General Information; Applications; Limitations/Warnings; Pre-Use - MSA OptiVizor Manuel D'instruction

1. General Information

OptiVizor
The lens conforms to EN 166:1995 and is only suitable for the uses marked on it (see
table 1).
OptiVizor W
The welding screen assembly meets the requirements of EN 175 for basic use, when
fitted to the OptiVizor.
In addition to providing the 'basic' level of protection, it will also afford additional
protection properties if marked as follows:
-S Increased robustness
-9 Molten Metals and hot solids
-F Low energy impact
-B Medium energy impact
W Water immersion
The welding visor assembly is suitable for use with welding lenses up to and including
Shade 16 filtration rating (EN 169). A cover lens should be fitted at all times. Toughened
mineral filter oculars should only be used in conjunction with a suitable backing ocular.
Note:
Where components with different markings are assembled together the protection of
the combination shall be of the lower constituent part.

1.1 Applications

Visors are designed for use by competent personnel familiar with workplace hazards
and only in conjunction with the OptimAir 3000 blower unit.
Type and concentration of the hazard in the ambient atmosphere must be known to
the extent that use of a filtering device is permissible and appropriate selection of
the class of device and filter type is made.
Protection will only be obtained if the visors are used correctly.

1.2 Limitations/Warnings

Protection levels may be reduced if wind speed exceeds 2 meters per second.
Protection will only be obtained if the unit is fitted correctly; hair, spectacle side
arms etc. must not intrude into the face seal.
At very high work rates pressure in the device may become negative at peak inhalation
flow.
Warning!
Do not use in atmospheres with modified oxygen content [permissible range
19 - 23% see also local regulations].
Filtering devices must not be used in confined spaces (containers, canals, pits, etc.).

2. Pre-use

Prior to first use the head harness must be adjusted to fit by adjusting the crown strap so
that the headband lies across the forehead. Adjust the headband tension by pressing in
and turning the adjuster knob to achieve a secure fit. The suspension size can be
8
OptiVizor and OptiVizor W