Bedienungsanleitung Ferm WEA1057 (Seite 6 von 104) (Alle Sprachen)

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Selecting shade level

Fig. 3

Select the shade level you require according to

the welding process you will use by referring to

the “Shade Guide” below for settings. Turn the

shade control knob on the side of the helmet to

the shade number required.

Selecting delay time

Fig. 4

When welding ceases the viewing window

automatically changes from dark back to light

but with a pre-set delay to compensate for any

bright afterglow on the workpiece. The delay time/

response can be set to ‘fast’ (0.1 secs) or ‘slow’

(1.0 secs) as you require using the infinity dial

knob on the back of the shade cartridge.

Sensitivity

Fig. 4

The sensitivity can be set to ‘high’ or ‘low’ using

the infinity dial knob on the back of the shade

cartridge. The ‘high’ setting is the normal setting

for everyday use. Where the operation of the

mask is disturbed by excess light or another

welding machine close by, use the ‘low’ setting.

You are now ready to use the helmet. The

shading may be adjusted during use by re-setting

potentiometer control.

Marking

The shell and the auto darkening filter are marked

accordingly. Classification for eye and face

protection is following EN379 and EN175.

Ferm Welding mask FWA-700

4 / 9 - 13 FERM 1 / 1 / 1 / 2 EN379

Light state scale no 4

Lightest dark state scale no 9

Darkest state scale no 13

Manufacturer’s identification FERM

Optical class 1

Diffusion of light class 1

Variations in luminous transmittance class 1

Angular dependence 2

Number of this standard EN379

4. Maintenance

Cleaning

Clean helmet by wiping with a soft cloth. Clean

cartridge surfaces regularly. Do not use strong

cleaning solutions. Clean sensors and solar cells

with methylated spirit and a clean cloth and wipe

dry with a lint-free cloth.

Problem solving

If, at any time, the face plate in the

cartridge fails to darken when exposed to

a welding spark, do not use. Remove

cartridge and return to your dealer for

checking. Continued use of the product

with auto darkening feature NOT functio-

ning may damage your eyes and cause

blindness. Use of malfunctioning product

will invalidate the warranty, and any right

of claim on any insurance policy.

Irregular darkening or dimming.

• The headband may have been unevenly set

on the two sides of the helmet (unequal

distances from the eyes to the shade

cartridge).

• Readjust the distance of the shade

cartridge.

Shade cartridge does not darken or flickers.

• The sensors are soiled or obstructed.

• Clean.

• Front cover lens soiled or damaged.

• Clean or replace.

• Welding current too low.

• Adjust weld amperes.

Poor vision.

• Operative lenses and/or shade cartridge

soiled.

• Check, clean or replace.

• Insufficient ambient light.

• Adjust light.

• Shade level incorrectly set.

• Refer to shade guide for setting.

Slow response.

• Operating temperature too low.

• Do not use at temperatures below -5° C

(23° F).

Welding helmet slips.

• Headband adjustments incorrect.

• Refer to section 4.

Replacing front cover lens

Fig. 5

Place your finger or thumb into the recess at the

bottom edge of the window and flex the window

upwards until it releases from one edge. (C).

Remove the protective film from the new window

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