Bohler GUARDIAN 50 Manual De Instrucciones página 8

1. It is essential that when replacing the
battery that it is mounted the correct
way up as per the illustration.
CE 4/9-13 VA 1/1/1/2 EN379
4 - light state scale number
9 - lightest dark state scale number
13 - Darkest state scale number
VA - Manufactures identification
1 - Optical class
1 - Diffusion of light class
1 - Variation in luminous transmittance class
2 - Angle of Dependence classification
379 - Number of the standard
1. Not Switching – Stop welding immedia-
tely if the auto lens stays light and will
not darken. Review the sensitivity re-
commendations and adjust sensitivity.
Clean lens cover and sensors of any
obstructions. Note! Make sure the sen-
sors are clean and facing the arc; ang-
les of 45° or more do not allow the arc
light to reach the sensors.
2. Not switching – If the auto lens stays
dark after the weld arc is extinguished,
8
REPLACING THE ADF BATTERY
ADF MARKING
TROUBLE SHOOTING
English
Helmet Marking Explaination
EN175 B
EN175 – Is the standard number
B – Is medium energy impact rating
Cover lens markings
EN166 1 B
or the auto-lens stays dark when no arc
is present. Fine-tune the sensitivity set-
ting by making small adjustments to
the control by turning it toward the 'Lo'
setting. In extreme light conditions, it
may be necessary to reduce the sur-
rounding light levels.
During testing or use, in case of any
malfunctioning, please suspend using
it and contact your local sales agent.