Beta 7041LCD/4S Mode D'emploi page 10

INSTRUCTIONS FOR USE ISTRUZIONI PER L'USO
Mode selection
Set such mode as required for the welding job to be carried out as follows:
- Press the "MODE" button to select such option as required for the welding job to be carried out – "WELD L", "WELD H" or "GRIND"
- WELD L: for a low darkness level. Darkeness levels range from 5.0 to 8.5
- WELD H: for a high darkness level. Darkness levels range from 9 to 13
- GRIND: in this mode, the darkness shade cannot be modified; only shade 4 is available
NB: Function for use only during grinding jobs
Shade selection
Set the darkness shade according to the welding job to be carried out as follows:
- Press the "SET" button once to enable the "SHADE" function
- The number corresponding to the darkness shade will start flashing
- Press the UP and DOWN buttons to select the required shade level.
- To select the suitable shade number, follow the instructions contained in Table 1
Sensor sensitivity
Depending on the welding process and the ambient light, select the minimum amount of light required for the front sensors
to enable the protective screen guard as follows:
• Press the "SET" button twice to enable the "SENS" function; the symbol corresponding to the sensitivity of the arc sensors will
start flashing.
• : for high current welding in a bright welding environment or in an environment with other sources of interference.
• : for low current welding or in a low light environment, especially in case of low current argon arc welding.
• : for most indoor and outdoor welding operations.
Delay time
Depending on the welding process, set the amount of time required by the mask to switch back from full dark to full light.
The delay time ranges from 0.1s to 2.0s. Set the delay time as follows:
- Press the "SET" button three times to enable the "DELAY" function, to adjust the operating delay time of the filter.
- The number corresponding to the seconds of delay will start flashing.
- The delay time set between 0.1s and 0.3s is suitable for spot welding, short welding or seam welding.
- The delay time set between 0.8s and 2.0s is suitable for high current welding or preventing eye fatigue from electric arcs or close
viewing of incandescent pieces.
- The medium value is suitable for most indoor or outdoor welding jobs.
Filter operation test
Before each use, check the welding mask filter as follows:
- After selecting both the shade and the delay time, exit the setting mode.
- To exit the setting mode, wait 5 seconds or press SET up to 4 times.
- Start the filter operation test by pressing the "T" button.
NB: The "T" button will not be enabled if the "GRIND" mode has been set.
- Keep the "T" button pressed and check that the protective screen guard switches to the dark mode in the required shade.
- Release the "T" button and check that the protective screen guard brightens, while keeping the set delay time.
Filter power off
When finished using the welding operations, turn off the filter by pressing "OFF-3 SEC" for 3 seconds. To switch on again press
"MODE" or "SET".
10
Table 1
EN I