JBM 53414 Manual página 5

SAFETY PRECAUTIONS
1. OPERATION
1. Taking up the welding helmet, gently press the ON/OFF button on the auto-darkening welding
filter to power on.
2. Setting correct dark shade by turning the dark shade adjusting knob according to the welding.
3. Put on the helmet. At this moment, you can see work piecese clearly.
4. Start your welding work and the viewing window will turn to intended dark shade state you had
set immediately. If it fails, stop welding at once and check it out. Make sure you have overcome
the problem before try again.
5. Power AUTO-OFF when finish welding.
CAUTION
2. SENSITIVITY CONTROL
The sensitivity control is used to make the lens more responsive to different light levels exeperien-
ced in various welding processes. We recommend a Mid-Range or 30-50% sensitivity setting for
most applications.
It may be necessary to adjust helmet sensitivity to accommodate different lighting conditions or if
lens is flashing On and Off. Adjust helmet sensitvity as follows:
1. Turn sensitivity control to lowest setting.
2. Face the helmet in the direction of use ,exposing it to the surrounding light conditions.
3. Gradually turn sensitivity setting clockwise until the lens darkens ,then turn sensitivity control
counterclockwise until slightly past setting where lens clears . Helmet is ready for use .Slight
readjustment may be necessary for certain applications or if lens is flashing on and off.
3. REPLACING THE COVER LENS IF IT IS DAMAGED (CRACKED, SCRATCHED,
SOILED OR PITTED)
1. Replacement of Front Cover Lens for Type W:
1. Press the buttons on the two sides of helmet, and then pull the cover lens out of it.
2. Replace a new front cover lens, insert the two sides into the buttons of helmet.
3. Press the cover plate to fit well.
2. Replacement of Front Cover Lens for Type G & Type H & Type D:
1. Lift the front cover lens from bottom side with one finger, remove it by draw out side.
2. First bend the new cover plate and insert one side of the plate into the cover plate security
slot and then the opposite side.
3. Press the cover plate to fit well.
4. TROUBLE SHOOTINGTR
1. If the auto-darkening speed and shade state level decrease, the batteries are low. Replace the
batteries.
2. If the viewing window will not lighten or become clear, either power switch is OFF or batteries are
low. Turn on the switch or replace batteries.
3. When the light transmittance of the protective sheet in front of the lens is low, replace with a new
one.
Batteries should be removed when long time off use. Whenever the welding
helmet is off use and/or stored, always keep the helmet with filter
sensors downward. Otherwise may cause batteries used up earlier
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EN