General Information; Applications; Limitations / Warnings; Pre-Use - MSA OptiVizor Instructions For Use Manual

OptiVizor / OptiVizor W

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 adjusted between sizes 52 and 64 by turning
the knob. Adjust the tension screws at either side so that the visor will stay in the up position.
Warning:
Do not use the equipment if the head cap or air hose is damaged, check for cracks splits and tears, which
will cause leakage.
GB
7