YESWELDER EH-091XP - Auto-Darkening Welding Helmet Manual

PRODUCT FEATURES

Based on the principle of photo electricity, the LC (Liquid Crystal) valve in the helmet darkens the moment welding operations start, in less than 1/25000-1/30000 s. The shade value can be adjusted between DIN 5 to DIN 13. The helmet includes IR (Infra-Red) and UV (Ultra Violent) filters consisting of reflective coated glass, multi-layer valve and a polarizer. This effectively blocks any ultra violent and infra-red rays, protecting the user's eyes and face, even in the clear state. The auto-darkening helmet has wider applications as compared with conventional welding helmets. It protects the face and neck of the welder from electricity arc, improving safety conditions in work area.
The product is widely used across many industries including Oil & Gas, Shipbuilding, Architecture and Steel Manufacturing.
Working temperature range is from -10°C to 60°C
Limited storage temperature range is from -20°C to 70°C
Relative Humidity range is from 20% to 80%

OPERATING PRINCIPLE

The helmet contains an electronic shutter module. The LC valve/shutter darkens/lightens when a voltage is applied. The bright light from electricity arc is converted into an electronic signal. This signal is then magnified and passed to LC circuit control module. The control module then closes (darkens) the LC valve/shutter.
The operating principle of the whole circuit is as follows:

TECHNICAL SPECIFICATIONS AND PARAMETERS

Function is only for reference, Please operate according to the actual function

ASSEMBLY AND PART LIST

ADF

Headband Install (Left and right)

Dual top traps adjustments for increasing stability and reduce pressure on the top of the head.
Pivoting top and back is selfadjusting and conform to different head shapes.

Battery replacement

Pls replace lithium battery, When low-volt age indicator get lighted.

Pls classify the used batteries, disposed of by Local government regulations or hand over to professional organization.

TEST: When press this button, ADF work immediately - from light to dark, Then turn back to light immediately. The device is normal.

Adjust the distance between nose and ADF

6 settings let your decide the distance between your face the helmet for a better view.

Headband Knob

Depending on the size of the head, turn this knob to zoom in or out, Smooth ratchet for precise tightening.

Parts List and Headband of Assembly Diagram

Lens and Product Maintenance

Replace the Front Lens Cover if it is damaged (cracked, scratched, soiled or pitted)
When replacing the inner protective lens, you need to open and remove the fixing bracket of the ADF.

1. To Replace the Cover:
   1. Remove the Front Lens Cover by gently a. pulling up the central part of the Lens. See Figure 3. If the unit has a frame over the front of the lens, lift up on the tab at the bottom of the frame to access the lens cover.
      
   2. Remove the protection film from both b. sides of the new Lens if it comes with a film covering. Place the new Lens into place by bending it slightly and sliding it between the tabs at each side of the lens until it snaps into place.
   3. Helmet sure that the Lens is securely c. installed.
   4. If the unit has a frame, make sure that the frame is snapped securely into place.
2. Clean the Filter Lens with a clean lint-free tissue or cotton cloth.
3. Do not immerse the lens in water or any other liquid. Do not use abrasives, solvents or oil based cleaners.
4. Do not remove the auto-darkening filter from the Auto-Darkening Welding Helmet. Do not try to open the filter.

OPERATING INSTRUCTIONS

• Open the package and take out the helmet. Check to make sure that the item is intact and undamaged including the lithium battery, installed on the helmet.
• Do not use the Welding Helmet if the lens is cracked or if the lens is dirty.
• Put the helmet on and adjust the manual knob for the head band to ensure a comfortable fit. Adjust the headband so that the helmet fits on the head as low as possible and close to the face.
• The knobs on the sides are to loosen the grip for easy removal.
• The angle of the lens can be moved to and fro as required.
• Adjusting the switch sensitivity - The operator can adjust the amount of light required for the lens to darken, depending on working conditions. Reduce sensitivity to avoid interference. When working with a small electric arc, high sensitivity is required. For e.g. Argon arc.
• Adjusting dark to clear delay - The operator can change the time for the filter to return to clear state, depending on working conditions and individual comfort level. When welding is stopped, the filter screen automatically changes from dark to clear state according to the time setting selected. The adjustment can be made with tumble switch, knob switch or touch-tone switch as per the helmet type. Please refer to annexure 1 for details. (In case of touch-tone switch the light will go off in 2 sec after it has been switched off)
• Adjusting the Shade Range - The operator can select (DIN) variable shades from 9 to 13 at the turn of a shade knob. Refer to Shade Guide Table in Annexure 2 for shade selection.
• When working in a cramped and crowded site, switch the anti-j amming device on for filter ADF to avoid accidental switch off.
• When welding, wear approved Auto-Darkening Welding Helmet, respirator and hearing protection.
• This helmet provides protection for welding purposes only.
  It is not suitable for laser welding processes. The Welding Helmet will not protect against severe impact hazards, including fragmenting grinding disks. The Welding Helmet will also not protect against explosive devices or corrosive liquids.
• Use only at temperatures within the operating range for your model as stated on the specifications chart in Annexure 1.

MAINTENANCE

A daily maintenance for the helmet and lens is required to ensure reliable protection.

• Clean filter's surfaces regularly. Protect filter from contact with any liquid and dirt. Do not immerse the filter in water.
• Should the Auto-Darkening Welding Helmet not darken upon striking an arc, stop welding immediately and check if the battery needs replacement. Ifthe lens still does not darken, have the helmet checked by an authorized service technician.
• Replace the Front Lens Cover if it is cracked, scratched or damaged in any way.
• The Auto Darkening Filter must never be placed on a hot surface

STORAGE

• Remove the battery when the helmet is not in use for a long period of time.
• Storage temperature range is -20°C ~ 70°C.

SHADE GUIDE TABLE

Note:
*SMAW - Shielded Metal Arc Welding
*MIG (heavy) - MIG on heavy metals
*MIG (light) - MIG on light alloys
*TIG, GTAGas Tungsten Ars Welding (GTAW)(TIG)
*SAW - Shielded Semi-Automatic Arc Welding
*PAC - Plasma Arc Cutting
*PAW - Plasma Arc Welding

Documents / Resources

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