UNIMIG U21015 Professional Series Welding Helmet Instruction Manual

: June 16, 2024
: UNiMiG

Table of Contents

UNIMIG U21015 Professional Series Welding Helmet
Product Information
Models
Safety
Features
Specifications
Parts Breakdown
ADF Operating Instructions
- Additional Instructions
Harness Operating Instructions
Troubleshooting
Warranty
Shade Guide
Contacts
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UNIMIG U21015 Professional Series Welding Helmet

Product Information

Specifications

Parameter	Values
Filter Dimensions
View Size	102.5×102.5mm
Arc Sensors	5
Classification	1/1/1/1
Light State	3.0

Features

1/1/1/1 Classification: Superior optical clarity with a 1/1/1/1 classification. Get an Auto-Darkening Filter (ADF) that’s scored top marks across the board for a crystal-clear view of your weld at every angle.
Auto Shade Select: Take the guesswork out of your protection. The auto shade select technology instantly detects the arc and decides what shade you need to keep your eyes safe for every kind of welding.
102.5×102.5mm View Size: Unmatched visibility in every situation. The 102.5×102.5mm viewing area lets you see every weld with complete clarity.
3.0 Light State: Get a clear view before and after the weld, as well as during. With a 3.0 light state, you’ll be able to see your workpiece as well with the helmet on as with it off.
External Grind Button: Seamlessly switch to grind mode with the click of a button. When the helmet is in grind mode a small LED will illuminate, so you don’t need to take the helmet off to check.
5 Arc Sensors: Detect every arc instantly. The four optimally positioned arc sensors, coupled with an arc intensity sensor, trigger the Auto-Darkening Filter. Experience unparalleled eye protection right from the start of every weld, even when you’re out of position.
Backup Battery: 2 x CR2450 backup batteries improve the performance and reliability of the auto-darkening filter.
4 Point Harness: Get the perfect fit and stay comfortable for hours. Adjust all 4 points of contact to suit you, and have the weight spread more evenly, minimizing neck strain.

FAQ

Q: Is the welding helmet suitable for children?
- A: No, the welding helmet contains a button battery that can cause severe or fatal injuries if swallowed. Keep it out of reach from children.

Models

Safety

Please read and understand all instructions before using.

Be sure that the dark shade of the lens in the welding helmet is on the correct shade number for your application.
The helmet and lenses are not suitable for “overhead” welding application, laser welding, or laser cutting applications.
Welding helmets are designed to protect the eyes and face from sparks, spatter, and harmful radiation under normal welding conditions.
This helmet will not protect against explosive devices or corrosive liquids. Machine guards or eye splash protection must be used when these hazards are present.
Impact resistant, primary eye protection, spectacles or goggles that meet current ANSI specifications, must be worn at all times when using this welding helmet.
Avoid work positions that could expose unprotected areas of the body to sparks, spatter, direct and/or reflected radiation. Use appropriate protection if exposure cannot be avoided.
Before each use, check that the protection plates are clean and that no dirt is covering the sensors on the front of the lens.
Inspect all operating parts before each use for signs of wear or damage. Any scratched, cracked, or pitted parts should be replaced immediately.
Do not make any modifications to either the welding lens or helmet, other than those specified in this manual. Do not use any replacement parts other than those specified in this manual. Unauthorised modifications and replacement parts will void the warranty and expose the user to the risk of personal injury.
If this lens does not darken when striking arc, stop welding immediately and check the helmet is in Weld Mode and not Grind Mode. If the issue persists, contact your local UNIMIG Service Department.
Do not immerse this lens in water.
Do not use any solvents on any lens or helmet components.
The recommended operating temperature range for this welding lens is -10°C to 65°C (14°F-149°F ). Do not use this device beyond these temperature limits.
Failure to follow these warnings and/or failure to follow all of the operating instructions could result in severe personal injury.

WARNING: Contains button battery, hazardous if swallowed. Keep out of reach from children. Battery can cause severe or fatal injuries in 2 hours or less if it is swallowed or placed inside any part of the body. Medical attention should be sought immediately if it is suspected the battery has been swallowed or placed inside any part of the body.

Features

1/1/1/1 Classification
- Superior optical clarity with a 1/1/1/1 classification. Get an Auto-Darkening Filter (ADF) that’s scored top marks across the board for a crystal-clear view of your weld at every angle.
Auto Shade Select
- Take the guesswork out of your protection. The auto shade select technology instantly detects the arc and decides what shade you need to keep your eyes safe for every kind of welding.
102.5×102.5mm View Size
- Unmatched visibility in every situation. The 102.5×102.5mm viewing area lets you see every weld with complete clarity.
3.0 Light State
- Get a clear view before and after the weld, as well as during. With a 3.0 light state, you’ll be able to see your workpiece as well with the helmet on as with it off.
External Grind Button
- Seamlessly switch to grind mode with the click of a button. When the helmet is in grind mode a small LED will illuminate, so you don’t need to take the helmet off to check.
5 Arc Sensors
- Detect every arc instantly. The four optimally positioned arc sensors, coupled with an arc intensity sensor, trigger the Auto-Darkening Filter. Experience unparalleled eye protection right from the start of every weld, even when you’re out of position.
Backup Battery
- 2 x CR2450 backup batteries improve the performance and reliability of the auto-darkening filter.
4 Point Harness
- Get the perfect fit and stay comfortable for hours. Adjust all 4 points of contact to suit you, and have the weight spread more evenly, minimising neck strain.

Specifications

Technical Data

Parameter	Values
Filter Dimensions	114x133x9.5mm
View Size	102.5×102.5mm
Arc Sensors	4 Arc Sensors, 1 Arc Intensity Sensor
Classification	1/1/1/1
Light State	3
Dark State	5-13
UV/IR Protection	DIN15
Time from Light to Dark	0.04ms
Time from Dark to Light	0.1-0.9s
Sensitivity Delay	Adjustable (1-5 for low-high)
Power Supply	Solar Cells & 2 x CR2450 Replaceable Battery
Warranty	2 Years
Operating Temperature	-10˚C to 65˚C
Storage Temperature	-20˚C to 85˚C
Shade Control	Yes
Grind Mode	Yes (External)
Minimum TIG Amperage	2A
Standards	AS/NZS 1337.1 B (High Impact)

AS/NZS 1338.1 (Auto-Darkening)

Replaceable Parts

Part	SKU
Professional Series Welding Helmet Lens Kit	U21022
4 Point Harness	U21024
4 Point Harness Sweatband	U21025
4 Point Harness Back Pad	U21026

Magnification Lens

| U21010 – 1.5x Magnification Lens U21011 – 2.0x Magnification Lens

U21012 – 2.5x Magnification Lens

Parts Breakdown

Helmet Shell
Adjustment Knob
Outer Lens Cover (U21022)
ADF Frame
Auto-Darkening Filter (ADF)
Inner Lens Cover (U21022)
4 Point Harness Sweatband (U21025)
Harness Bracket – Right
4 Point Harness (U21024)
4 Point Harness Back Pad (U21026)
Neck Band
Harness Bracket – Left
External Grind Button / Shade Control Dial

ADF Operating Instructions

Mode Button
Sensitivity Button
Delay / Lock Button
Grind Button
Shade Control Dial
5-9 / 9-13 Shade Switch
Backup Battery Cover

Auto Shade Select

Press the Mode (1) button to cycle from MANUAL to AUTO. The Auto-Darkening Filter (ADF) will now be in Auto Shade Select mode. The ADF will adjust the shade depending on the brightness of the welding arc. The Auto Shade Select feature allows adjustment of the auto value up ±2.0 shade levels from the auto-detected value. Rotate the Shade Control Dial (5) to increase or decrease the auto value.

Manual Shade Control

Press the Mode (1) button to cycle from AUTO to MANUAL. The Auto-Darkening Filter (ADF) will now be in Manual Shade Control mode. To adjust the shade value, rotate the Shade Control Dial (5).
To adjust shades 5-9, move Shade Switch (6) into the left position.
To adjust shades 9-13, move Shade Switch (6) into the right position.

Note: Choose an optimum shade number for the required welding process or application.

If this lens does not darken when striking arc, stop welding immediately and check the helmet is in Weld Mode and not Grind Mode. If the issue persists, contact your local UNIMIG Service Department.

Shade Lock

Hold the Delay / Lock Button (3) until the Shade Lock LED indicator starts to flash.
When Shade Lock is activated, the ADF will remain activated in the currently selected shade.

Sensitivity Control

The responsiveness to different light levels in various welding processes can be adjusted in the range 1-5 (from low to high).
Press the Sensitivity Button (2) to edit the setting, the sensitivity range will flash on the screen (from 1 to 5). Repeatedly press the Sensitivity Button (2) until the desired level is shown.

Low Sensitivity

Suitable for high amperage welding and welding in bright light conditions (work light / sunlight).

High Sensitivity

Suitable for low amperage welding and use in poor light conditions.
Suitable for use with steady arc process such as TIG welding.
Under normal use, a higher sensitivity setting is recommended.

Delay Control

The length of time delay for the ADF to return to the light state after welding can be adjusted in the range 1-5 (0.1-0.9s). The time delay is for the protection of the welder’s eyes from strong residual rays after welding.
Press the Delay Button (3) to edit the setting, the delay range will flash on the screen (from 1 to 5). Repeatedly press the Delay Button (3) until the desired length of time delay is shown.

Low Delay

The time the ADF takes to lighten after welding becomes shorter.
The shortest time is about 0.1s depending on the welding point temperature and shade setting. This setting is ideal for tack welding or production welding with short welds.

High Delay

The time the ADF takes to lighten after welding becomes longer.
The longest time is about 0.9s depending on the welding point temperature and shade setting. This setting is ideal for welding at high amperage where there is an afterglow from the weld.

Grind Selection

Hold the Grind Button (4) until the grind icon appears on the screen and the orange light on the ADF button flashes.
To exit grind mode, hold the Grind Button (4) until the grind icon disappears.

Note: Do not weld in the grind mode, the ADF will not darken.

Battery Indicator

The battery icon will show current battery level. When low, the battery icon will show no bars.
The low battey indicator will also start to flash. Replace the battery when it is low, otherwise the ADF switching time will become slower, and shade accuracy will be compromised.

Power Supply & Replacing The Battery

The power of the auto-darkening helmet is provided by solar cells and 2 x CR2450 lithium batteries. To change the batteries, open the Backup Battery Cover (7) and replace both batteries.

Removing The ADF From The Helmet Shell

Switch the ADF frame lock to the left position to unlock it from the helmet shell.
Lift the bottom of the ADF up then slide the unit down to remove it from the helmet shell.

Changing The Inner Lens Cover

Pry the inner lens cover up from the finger groove at the top of the ADF. The inner lens cover can then slide up and out of the ADF.
Replace with new inner lens cover.

Changing The Outer Lens Cover

With the ADF frame removed, simply lift out the existing outer lens cover. Replace with new outer lens cover.

Installing A Magnification Lens

Slide the magnificaion lens down through the magnification lens holder.

Additional Instructions

Be sure that the helmet is used in the correct condition and according to the safety requirements.
There is a liquid crystal-valve in the filter, although it has inner and outer protection covers, it is important to avoid heavy knocks to the helmet.
The outer protective shell of the helmet should be periodically inspected and cleaned. In the case of a break, crack, pitting or other damage, the helmet shell must be replaced.
To operate more efficiently and safely, please select the correct dark shade number.
The arc light must be visible completely by all arc sensors. If not, the ADF may struggle to detect an arc and may not activate the selected shade.
Please use the automatic filter at a temperature between -10°C-65°C (14°F-149°F).
Do not disassemble the filter. If any problems arise, please contact your local UNIMIG service department.

Harness Operating Instructions

Neck Band Adjustment

To tighten the neck band, turn the neck band adjustment dial rotate-right clockwise .
To loosen the neck band, turn the neck band adjustment dial rotate-left anti-clockwise.

Head Strap Adjustment

To adjust the head straps, first push the head strap lock out of the current position.
Then adjust the strap to the desired length, and push the head strap lock into the corresponding position.

Distance Adjustment

To adjust the distance between your face and the lens, push the distance adjuster buttons. The helmet shell can now move towards or away from your face. Release the buttons to lock the shell into position.
Ensure that both sides are equally positioned for proper vision.

Angle Adjustment

There are 5 positions available to set the angle of the helmet.
To adjust, lift and reposition the locking tab into the desired angle position.

Troubleshooting

The ADF does not darken when welding
- Stop welding or cutting immediately.
- Make sure the sensors are facing the arc and there are no obstructions.
- Check the mode is on WELD, not GRIND.
- Review sensitivity recommendations and adjust sensitivity if possible.
- Replace the battery if necessary.
The ADF stays dark after welding or there is no arc present
- Adjust the sensitivity to a lower level.
- Check that Shade Lock is not activated.
- If the worksite is too bright, it is recommended to reduce the surrounding light level.
The ADF switches during welding
- Increase the sensitivity if possible.
- Make sure the sensors are facing the arc and there are no obstructions.
- Increasing Delay 0.1−0.3 seconds may also reduce switching.

Warranty

UNIMIG auto-darkening welding helmets are covered for warranty for up to three years from the date of purchase from authorised UNIMIG dealers.
The duration of use depends on various factors such as use, cleaning storage and maintenance. Frequent inspections are recommended.