bohler 73280 Big Vision Air Grinding Visor Instruction Manual

: June 13, 2024
: BOHLER

Table of Contents

Instructions
USER MANUAL FOR GRINDING VISOR
SAFETY INSTRUCTIONS
BEFORE FIRST USE
PREPARATION FOR USE / USAGE
MAINTENANCE / SERVICE
STORAGE
PART LIST (p.4)
MARKINGS
PRODUCT SPECIFICATION
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

bohler 73280 Big Vision Air Grinding Visor Instruction Manual

Instructions

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See the instruction for use!

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Recommended storage conditions

USER MANUAL FOR GRINDING VISOR

The user manual for the helmet comply with Paragraph 1.4 of Annex II of the PPE Regulation (EU) 2016/425.

The manufacturer reserves the right, at any time and without prior notice, to make such changes and amendments to these user instruction as become necessary due to misprints, inaccuracies or product enhancements. Such changes will, however, be incorporated into subsequent editions of the instruction manual.

Our latest product documents as well as all contact details for the voestalpine Böhler Welding can be found on our website at: www.voestalpine.com/welding.

IMPORTANT !
This user instruction manual must be read and fully understood before using the equipment. The user instruction manual must be retained for future reference.

The grinding visor (Big Vision Air) used together with an approved air delivery system provided by voestalpine Böhler Welding offers also protection against certain airborne contaminations. Read this manual in conjunction with other user instructions for air delivery systems, welding filters and battery charger, when used together.

Big Vision/ Big Vision Air grinding visors are manufactured by voestalpine Böhler Welding Group GmbH. Address contact information is printed on page 2.

SAFETY INSTRUCTIONS

WARNING: This visor is not to be used as safety plate.
Protection lenses do not provide unlimited eye, ear and face protection.
Never place the grinding visor on a hot surface.
This grinding visor helmet will not protect against severe impact hazards.
This grinding visor helmet will not protect against explosive devices or corrosive liquids.
Helmets and screen only resist a certain amount of heat.
Do not place them near naked flames or hot work areas etc.
Unauthorized modifications and replacement parts will void the warranty and expose the operator to the risk of personal injury.
Do not use in confined spaces and always asses the risk before use
Do not use in an environment that is immediately hazardous to health or user hygiene.
In the event of dizziness or breathing becomes difficult stop working immediately and leave the area
Do not use any solvents on visor or components.
Protect lenses from contact with liquids and dirt.
Materials that may get in contact with the wearers skin could cause allergic reactions to susceptible individuals.
Inspect the lens regularly. Immediately replace any scratched, cracked, or pitted screens.
Eye protectors against high speed particles worn over standard ophthalmic spectacles may transmit impacts, thus creating a hazard to the wearer.
Do not allow children to use or handle packaging material.

Big Vision Air (Grinding visor prepared for air) only:

Read this manual in conjunction with other user instructions for air delivery systems, welding filters and battery charger.
It is essential not to use the grinding visor when the connected blower unit is switched off. Little or no respiratory protection is to be expected. A rapid build-up of carbon dioxide and depletion of oxygen within the helmet may occur.
A disabled PAPR System does not protect the user’s respiratory organs.
The face seal must be properly fitted around the user’s face to guarantee the optimal level of protection.

General information on hazards:

Keep your head out of fumes. Do not breathe fumes. To avoid this danger the working area must be well ventilated and/ or proper extraction systems must be used to keep the fumes and gases away from your breathing zone.
If ventilation is poor, use an approved air-supply respiratory system.
Wear approved ear protection if the noise level is high.
Wear protective clothing and gloves made from durable, flame-resistant materials and foot protection to protect your and your helper’s skin.
Use impact resistant safety spectacles or goggles and ear protection at all times when using this grinding visor.
Do not use this screen while working with or around explosives or corrosive liquids.
Immediately replace any scratched, cracked, or pitted screen

BEFORE FIRST USE

The grinding visor is fully assembled and ready to be used after minor preparations and adjustments:

Remove the protective layers/films that covers the screen must be removed from both sides
Check if there are any manufacturing defects such as bubbles, cracks and deep scratches.
Adjust the headgear assembly by pressing + rotating the adjustment knob at the rear for a proper fit on the user’s head.
Adjust the length of the top straps to vary the height and adjust the depth and angle of the helmet shell by slightly losing the knobs on both sides.
Tighten the knobs on both side of the helmet shell with care to adjust the friction which holds the shell in up (parking position) and down (working position).

PREPARATION FOR USE / USAGE

Before using the grinding visor the following checks need to be carried out according to the following procedure:

Check if the visor is clean and can be seen through.
Ensure the lens/grinding screen is correctly located and firmly fitted to the helmet.
Check if there are any defects such as bubbles, cracks and deep scratches. Exchange the protection plate if necessary.
Be sure the visor is seated properly (flat) to prevent fogging.

Big Vision Air (Grinding visor prepared for air) only:

Attaching the air hose to a Böhler helmet prepared for air: Align the pins of the hose bayonet connector with the slots in the air duct. Push the bayonet connector into the air duct until it reaches the bottom of the hole and then rotate it gently until the locating pins clip into place.

Directing the airflow inside the helmet: Regulate the amount of air that is guided to your forehead by opening/ closing the rotating knob on the inside of the shell above the viewing area. (see p.4 – Fig. 3 )

Airflow Inside

Fitting the face-seal: When the connected blower is switched on lower the helmet to its down position. Pull the face seal with the respective tap over the chin and fit it properly around your face and chin. The protective factor of the complete system is reduced if the seal of the helmet is not fitted properly, for example due to beards or long hair intervening into the seal line.

MAINTENANCE / SERVICE

The user is advised to make regular checks to ensure no damage is evident. The grinding screen is a wear part and must be replace with original Böhler Welding spare parts (see “7. PART LIST”).

Replacing the screen (protection plate)

Ensure that the grinding visor is always fitted with a screen/ protection plate.
The screen must be replaced if broken, damaged or covered with grinding spatter to the extent that vision is impaired.
The screen is a consumable and must be replaced regularly with genuine certified spare parts from Böhler Welding.

Replacing the headgear
Exchange the headgear by unscrewing the knobs on the outside of the shell. Replace the headgear and tighten the new one back in as per the illustration (see p. 5 – Fig. 4)

Airflow Inside

Item	Part No.	Product Naming
1	73280	Big Vision
2	73314	Big Vision Air
3	73287	Grinding screen
4	73315	Face-seal
5	32406	Headgear
6	32416	Sweatband (front and rear)

Replacing the face seal
Remove the nuts and the screws holding the face-seal in place replace the face-seal and gently fix it with the screws and nuts in place.

CLEANING / DISINFECTION

The grinding visor and screen should be regularly cleaned to keep it in a good working condition. Only use mild soap and water in a wetted cloth for cleaning and a dry cotton cloth for drying.

Apply the ordinary disinfection with a clean cloth or paper towel. Do not apply cleaner directly to the lens. Alcohol and other solvents are strictly prohibited as they will damage the grinding visor and screen.