Auto-Darkening Helmets Model: T94t, T94i Series T94 T94i

OM-255503B 2018−12 ®

Auto-Darkening Helmets Model: T94t, T94i Series

T94 T94i

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SECTION 1 − WELDING HELMET SAFETY PRECAUTIONS − READ BEFORE USING...... 1 1-1. Symbol Usage ...... 1 1-2. Arc Welding Hazards...... 1 1-3. Proposition 65 Warnings...... 2 1-4. Lens Shade Selection Table...... 3 1-5. Principal Safety Standards...... 3 SECTION 2 − CONSIGNES DE SÉCURITÉ POUR LE CASQUE DE SOUDAGE − LIRE AVANT UTILISATION...... 4 2-1. Symboles utilisés...... 4 2-2. Dangers relatifs au soudage à l’arc...... 4 2-3. Proposition californienne 65 Avertissements...... 5 2-4. Tableau de sélection d’opacité de lentille...... 6 2-5. Principales normes de sécurité...... 6 SECTION 3 − SPECIFICATIONS...... 7 SECTION 4 − OPERATING INSTRUCTIONS...... 8 4-1. Helmet Configurations...... 8 4-2. Helmet Controls...... 9 4-3. Mode Button And Grind / Low Battery Light...... 10 4-4. Mode Control Settings...... 11 4-5. Variable Shade Control...... 12 4-6. Lens Delay Control...... 13 4-7. Sensitivity Control...... 14 4-8. Typical Lens Adjustment Procedure...... 15 4-9. Info Control Button...... 16 4-10. Clock Control ...... 17 4-11. Arc Time And Arc Count Control...... 18 SECTION 5 − ADJUSTING HEADGEAR...... 19 5-1. Adjusting Headgear On T94 Series Helmets...... 19 SECTION 6 − REPLACING THE GRINDING SHIELD OR LENS COVERS...... 20 6-1. Replacing Grinding Shield On T94i Helmet...... 20 6-2. Replacing Lens Covers On Quick Release Helmets...... 21 SECTION 7 − REPLACING THE BATTERY...... 22 SECTION 8 − INSTALLING OPTIONAL MAGNIFYING LENS...... 23 SECTION 9 − MAINTENANCE...... 23 SECTION 10 − TROUBLESHOOTING...... 24 SECTION 11 − PARTS LISTS...... 25 SECTION 12 − LIMITED WARRANTY...... 28 SECTION 1 − WELDING HELMET SAFETY PRECAUTIONS − READ BEFORE USING

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Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions. 1-1. Symbol Usage

DANGER! − Indicates a hazardous Indicates special instructions. situation which, if not avoided, will result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text. Indicates a hazardous situation This group of symbols means Warning! Watch which, if not avoided, could result in Out! ELECTRIC SHOCK, MOVING PARTS, death or serious injury. The possible and HOT PARTS hazards. Consult symbols hazards are shown in the adjoining and related instructions below for necessary symbols or explained in the text. actions to avoid the hazards. NOTICE − Indicates statements not related to personal injury. 1-2. Arc Welding Hazards

Only qualified persons should install, operate, maintain, and repair this equipment. A qualified person is defined as one who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training and experience, has successfully demonstrated ability to solve or resolve problems relating to the subject matter, the work, or the project and has received safety training to recognize and avoid the hazards involved.

ARC RAYS can burn eyes and skin.

Arc rays from the welding process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld.

Wear a welding helmet fitted with a proper shade of filter to protect your face and eyes when welding or watching (see ANSI Z49.1 and Z87.1 listed in Safety Standards). Refer to Lens Shade Selection table in Section 1-4. Wear approved safety glasses with side shields under your helmet. Use protective screens or barriers to protect others from flash, glare, and sparks; warn others not to watch the arc. Wear body protection made from durable, flame−resistant material (leather, heavy cotton, wool). Body protection includes oil-free clothing such as leather gloves, heavy shirt, cuffless trousers, high shoes, and a cap. • Before welding, adjust the auto-darkening lens sensitivity setting to meet the application. • Stop welding immediately if the auto-darkening lens does not darken when the arc is struck.

NOISE can damage hearing.

Noise from some processes or equipment can damage hearing.

Wear approved ear protection if noise level is high.

OM-255503 Page 1 WELDING HELMETS do not provide unlimited eye, ear, and face protection.

Arc rays from the welding process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld.

Use helmet for welding/cutting applications only. Do not use helmet for laser welding/cutting. Use impact resistant safety spectacles or goggles and ear protection at all times when using this welding helmet. Do not use this helmet while working with or around explosives or corrosive liquids. This helmet is not rated for overhead welding. Do not weld in the direct overhead position while using this helmet unless additional precautions are taken to protect yourself from arc rays, spatter, and other hazards. Inspect the auto-lens frequently. Immediately replace any scratched, cracked, or pitted cover lenses or auto-lenses. Lens and retention components must be installed as instructed in this manual to ensure compliance with ANSI Z87.1 protection standards.

READ INSTRUCTIONS.

Read and follow all labels and the Owner’s Manual carefully before installing, operating, or servicing unit. Read the safety information at the be- ginning of the manual and in each section. Use only genuine replacement parts from the manufacturer. Perform installation, maintenance, and service according to the Owner’s Manuals, industry standards, and national, state, and local codes.

FUMES AND GASES can be hazardous.

Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health. Keep your head out of the fumes. Do not breathe the fumes. Ventilate the work area and/or use local forced ventilation at the arc to remove welding fumes and gases. The recommended way to determine adequate ventilation is to sample for the composition and quantity of fumes and gases to which personnel are exposed. If ventilation is poor, wear an approved air-supplied respirator. Read and understand the Safety Data Sheets (SDSs) and the manufacturer’s instructions for adhesives, coatings, cleaners, consumables, coolants, degreasers, fluxes, and metals. Work in a confined space only if it is well ventilated, or while wearing an air-supplied respirator. Always have a trained watchperson nearby. Welding fumes and gases can displace air and lower the oxygen level causing injury or death. Be sure the breathing air is safe. Do not weld in locations near degreasing, cleaning, or spraying operations. The heat and rays of the arc can react with vapors to form highly toxic and irritating gases. Do not weld on coated metals, such as galvanized, lead, or cadmium plated steel, unless the coating is removed from the weld area, the area is well ventilated, and while wearing an air- supplied respirator. The coatings and any metals containing these elements can give off toxic fumes if welded.

1-3. Proposition 65 Warnings

WARNING: Cancer and Reproductive Harm − www.P65Warnings.ca.gov OM-255503 Page 2 1-4. Lens Shade Selection Table

Process Electrode Size Arc Current Minimum Suggested in. (mm) in Protective Shade No. Amperes Shade No. (Comfort)* Shielded Metal Arc Less than 3/32 (2.4) Less than 60 7 −− Welding (SMAW) 3/32−5/32 (2.4−4.0) 60−160 8 10 5/32−1/4 (4.0−6.4) 160−250 10 12 More than 1/4 (6.4) 250−550 11 14 Gas Metal Less than 60 7 −− Arc Welding 60−160 10 11 (GMAW) 160−250 10 12 Flux Cored 250−500 10 14 Arc Welding (FCAW)

Gas Tungsten Arc Less than 50 8 10 Welding (TIG) 50−150 8 12 150−500 10 14 Air Carbon Light Less than 500 10 12 Arc Cutting (CAC-A) Heavy 500−1000 11 14

Plasma Arc Less than 20 4 4 Cutting (PAC) 20−40 5 5 40−60 6 6 60−80 8 8 80−300 8 9 300−400 9 12 400−800 10 14 Plasma Arc Welding Less than 20 6 6−8 (PAW) 20−100 8 10 100−400 10 12 400−800 11 14

Reference: ANSI Z49.1:2012

* Start with a shade that is too dark to see the weld zone. Then, go to a lighter shade which gives a sufficient view of the weld zone without going below the minimum. 1-5. Principal Safety Standards

Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, is available as a free download from the American Welding Society at http://www.aws.org or purchased from Global Engineering Documents (phone: 1-877-413-5184, website: www.global.ihs.com). Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1, from American National Standards Institute, 25 West 43rd Street, New York, NY 10036 (phone: 212-642-4900, website: www.ansi.org). Industrial Head Protection, ANSI/ISEA Standard Z89.1, from American National Standards Institute, 25 West 43rd Street, New York, NY 10036 (phone: 212-642-4900, website: www.ansi.org).

OM-255503 Page 3 SECTION 2 − CONSIGNES DE SÉCURITÉ POUR LE CASQUE DE SOUDAGE − LIRE AVANT UTILISATION

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Pour écarter les risques de blessure pour vous−même et pour autrui — lire, appliquer et ranger en lieu sûr ces consignes relatives aux précautions de sécurité et au mode opératoire. 2-1. Symboles utilisés

DANGER! − Indique une situation Indique des instructions spécifiques. dangereuse qui si on l’évite pas peut donner la mort ou des blessures graves. Les dangers possibles sont montrés par les symboles joints ou sont expliqués dans le texte.

Indique une situation dangereuse qui si Ce groupe de symboles veut dire Avertissement! on l’évite pas peut donner la mort ou des Attention! DANGER DE CHOC ELECTRIQUE, blessures graves. Les dangers PIECES EN MOUVEMENT, et PIECES possibles sont montrés par les CHAUDES. Consulter les symboles et les symboles joints ou sont expliqués dans instructions ci-dessous y afférant pour les actions le texte. nécessaires afin d’éviter le danger. AVIS − Indique des déclarations pas en relation avec des blessures personnelles. 2-2. Dangers relatifs au soudage à l’arc

L’installation, l’utilisation, l’entretien et les réparations ne doivent être confiés qu’à des personnes qualifiées. Une personne qualifiée est définie comme celle qui, par la possession d’un diplôme reconnu, d’un certificat ou d’un statut professionnel, ou qui, par une connaissance, une formation et une expé- rience approfondies, a démontré avec succès sa capacité à résoudre les problèmes liés à la tâche, le travail ou le projet et a reçu une formation en sécurité afin de reconnaître et d’éviter les risques inhérents.

LES RAYONS DE L’ARC peuvent provoquer des brûlures dans les yeux et sur la peau. Le rayonnement de l’arc du procédé de soudage génère des rayons visibles et invisibles intenses (ultraviolets et infrarouges) susceptibles de provoquer des brûlures dans les yeux et sur la peau. Des étincelles sont projetées pendant le soudage. Porter un casque de soudage muni d’un écran de filtre approprié pour protéger votre visage et vos yeux pendant le soudage ou pour regarder (voir ANSI Z49.1 et Z87.1 énuméré dans les normes de sécurité). Se reporter au tableau de sélection des filtres, Section 2-4. Porter des protections approuvées pour les oreilles si le niveau sonore est trop élevé. Avoir recours à des écrans protecteurs ou à des rideaux pour protéger les autres contre les rayonnements les éblouissements et les étincelles ; prévenir toute personne sur les lieux de ne pas regarder l’arc. Porter un équipement de protection pour le corps fait d’un matériau résistant et ignifuge (cuir, coton ro- buste, laine). La protection du corps comporte des vêtements sans huile comme par ex. des gants de cuir, une chemise solide, des pantalons sans revers, des chaussures hautes et une casquette. Avant de souder, régler la sensibilité du verre à obscurcissement automatique en fonction de l’application. Si le verre ne s’obscurcit pas à l’amorçage de l’arc, cesser immédiatement de souder. Le BRUIT peut endommager l’ouïe.

Le bruit produit par certains procédés ou équipements peut endommager l’ouïe. Porter des protecteurs antibruit approuvés si le bruit est trop élevé.

OM-255503 Page 4 LES CASQUES DE SOUDAGE ne procurent pas une protection absolue des yeux, des oreilles ou du visage.

Le rayonnement de l’arc du procédé de soudage génère des rayons visibles et invisibles intenses (ultraviolets et infrarouges) susceptibles de provoquer des brûlures dans les yeux et sur la peau. Des étincelles sont projetées pendant le soudage. Utilisez uniquement un casque pour les applications de soudage/découpe. Ne pas utiliser de casque pour le soudage/ découpage laser. Porter des lunettes de sécurité et des protecteurs antibruit résistants aux chocs en tout temps pendant l’utilisation de ce casque de soudage. Ne pas utiliser ce casque de soudage pendant la manutention ou le travail à proximité de liquides explosifs ou corrosifs. Ce casque n’est pas évalué pour le soudage à la verticale. Ne pas souder dans une position directement à la verticale tout en utilisant ce casque à moins d’avoir pris des précautions supplémentaires au préalable afin de se protéger contre les rayonnements de l’arc, des projections et d’autres risques. Vérifier fréquemment l’état de la cellule à obscurcissement automatique. Remplacer immédiatement toute loupe ou cellule égratignée, fissurée ou piquée. La lentille et les composants de retention doivent être installés comme indiqué dans ce manuel pour assurer la conformité avec les normes de protection ANSI Z87.1. LIRE LES INSTRUCTIONS.

Lire et appliquer les instructions sur les étiquettes et le Mode d’emploi avant l’installation, l’utilisation ou l’entretien de l’appareil. Lire les informations de sécurité au début du manuel et dans chaque section. N’utiliser que les pièces de rechange recommandées par le constructeur. Effectuer l’installation, l’entretien et toute intervention selon les manuels d’utilisateurs, les normes nationales, provinciales et de l’industrie, ainsi que les codes municipaux.

LES FUMÉES ET LES GAZ peuvent être dangereux.

Le soudage génère des fumées et des gaz. Leur inhalation peut être dangereux pour votre santé. Eloigner votre tête des fumées. Ne pas respirer les fumées. À l’intérieur, ventiler la zone et/ou utiliser une ventilation forcée au niveau de l’arc pour l’À l’intérieur, ventiler la zone et/ou utiliser une ventilation forcée au niveau de l’arc pour l’évacuation des fumées et des gaz de soudage. Pour déterminer la bonne ventilation, il est recommandé de procéder à un prélèvement pour la composition et la quantité de fumées et de gaz auxquelles est exposé le personnel. Si la ventilation est médiocre, porter un respirateur anti-vapeurs approuvé. Lire et comprendre les fiches de données de sécurité et les instructions du fabricant concernant les adhésifs, les revêtements, les nettoyants, les consommables, les produits de refroidissement, les dég- raisseurs, les flux et les métaux. Travailler dans un espace fermé seulement s’il est bien ventilé ou en portant un respirateur à alimentation d’air. Demander toujours à un surveillant dûment formé de se tenir à proximité. Des fumées et des gaz de soudage peuvent déplacer l’air et abaisser le niveau d’oxygène provoquant des blessures ou des accidents mortels. S’assurer que l’air de respiration ne présente aucun danger. Ne pas souder dans des endroits situés à proximité d’opérations de dégraissage, de nettoyage ou de pul- vérisation. La chaleur et les rayons de l’arc peuvent réagir en présence de vapeurs et former des gaz hau- tement toxiques et irritants. Ne pas souder des métaux munis d’un revêtement, tels que l’acier galvanisé, plaqué en plomb ou au cadmium à moins que le revêtement n’ait été enlevé dans la zone de soudure, que l’endroit soit bien ventilé, et en portant un respirateur à alimentation d’air. Les revêtements et tous les métaux renfermant ces éléments peuvent dégager des fumées toxiques en cas de soudage. 2-3. Proposition californienne 65 Avertissements

AVERTISSEMENT : cancer et troubles de la reproduction − www.P65Warnings.ca.gov OM-255503 Page 5 2-4. Tableau de sélection d’opacité de lentille

Procédé Taille Courant Opacité de Opacité d’électrode d’arc en protection suggérée po. (mm) ampères minimum No. No. (Confort)*

Soudage à l’arc avec Moins que 3/32 (2,4) Moins que 60 7 −− électrode enrobée 3/32−5/32 (2,4−4,0) 60−160 8 10 (SMAW) 5/32−1/4 (4,0−6,4) 160−250 10 12 Plus que 1/4 (6,4) 250−550 11 14

Soudage à l’arc sous Moins que 60 7 −− gaz avec fil plein 60−160 10 11 (GMAW) 160−250 10 12 Soudage à l’arc avec fil 250−500 10 14 fourré (FCAW) Soudage à l’arc sous Moins que 50 8 10 gaz avec électrode au 50−150 8 12 tungstène (TIG) 150−500 10 14

Coupage à l’arc avec Légère Moins que 500 10 12 électrode au carbone et Lourde 500−1000 11 14 jet d’air (AAC)

Coupage au plasma Moins que 20 4 4 (PAC) 20−40 5 5 40−60 6 6 60−80 8 8 80−300 8 9 300−400 9 12 400−800 10 14

Soudage au plasma Moins que 20 6 6−8 (PAW) 20−100 8 10 100−400 10 12 400−800 11 14

Référence : ANSI Z49.1:2012 * Commencer avec une opacité plus élevée pour voir la zone de soudage puis utiliser une lentille plus claire permettant de voir suffisamment la zone de soudage, sans aller au dessous du minimum. 2-5. Principales normes de sécurité

Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, is available as a free download from the American Welding Society at http://www.aws.org or purchased from Global Engineering Documents (phone: 1-877-413-5184, website: www.global.ihs.com). Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1, from American National Standards Institute, 25 West 43rd Street, New York, NY 10036 (phone: 212-642-4900, website: www.ansi.org).

OM-255503 Page 6 SECTION 3 − SPECIFICATIONS

T94 Specification T94i

Viewing Field 3.81 x 2.62 in (97 x 60mm)

Reaction Time 0.0000500 sec (1/20,000) Available Shades Weld Mode All Shades Provide Darkened State: No. 8 − No. 13 Continuous Light State: No. 3 UV And IR Cut Mode Protection. Darkened State: No. 5 − No. 8 Light State: No. 3 Grind Mode Light State: No. 3 X-Mode Darkened State: No. 8 − No. 13 Light State: No. 3 Sensitivity Control Adjustable For Varying Ambient Light And Welding Arc Delay Control Slows Lens Dark-To-Light State Between 0.1 And 1.0 Seconds Automatic Power Off Shuts Lens Off 45 Minutes After Last Arc Is Struck Low Battery Light Red LED Illuminates To Indicate 2−3 Days Remaining Battery Life Power Supply Panasonic CR2450 Lithium Battery (Miller Part No. 217043)

Sensors Independent/Redundant (Four) Operating 14F to 131F / −10C to +55C Temperature When Stored In Extremely Cold Temperatures, Warm Helmet To Ambient Temperature Before Welding. Storage −4F to 158F / −20C to +70C Temperature When Stored In Extremely Cold Temperatures, Warm Helmet To Ambient Temperature Before Welding. Total Weight T94: 21 oz (595 g) T94i: 25.7 oz (729 g) Standards Meets ANSI Z87.1+, CSA Z94.3 Warranty Three Years From Date Of Purchase (Section 12)

OM-255503 Page 7 SECTION 4 − OPERATING INSTRUCTIONS

4-1. Helmet Configurations

1 T94 Helmet The T94 helmet features a fixed position, auto-darkening lens and is designed for standard welding applications. 2 T94i Helmet The T94i helmet features a flip-up auto-darkening lens and a separate, 1 clear grinding shield. Flip the lens up when grinding and performing other non-welding work. Flip the lens down when welding or cutting.

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OM-255503 Page 8 4-2. Helmet Controls

1 6 3 5

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The lens on T94 Series Hel- 3 Adjust Button The External Grinding mets turns on (darkens) Mode button is not 4 Increase (+) Button automatically when welding available on the T94i begins and turns off when helmet. welding stops. 5 Decrease (-) Button The lens assembly 1 Mode Button (On/Off) 6 Info Control Button (See Sections 4-3 and (See Section 4-9) saves the shade, sensi- 4-4) tivity, and delay 2 Grind Mode / Low 7 External Grinding settings. Battery Light Mode Button (Section (Section 4-3) 4-4)

OM-255503 Page 9 4-3. Mode Button And Grind / Low Battery Light

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The auto-darkening lens and to begin Mode and Info The Grind / Low Battery light on T94 Series Helmets adjustments. blinks when the lens is in the Grind mode. Light stays on turns on (darkens) auto- When the Mode button is when 2−3 days of battery life matically when welding pressed, the helmet control remain. begins and turns off display will appear. Do not when welding stops. use the helmet if the lens If battery power is low, re- does not function as de- 1 Mode Button place with CR2450 lithium scribed. (See Section 10, battery (1 required − Miller Press Mode button to check Troubleshooting.) Part No. 217043). See Sec- if the lens is working properly 2 Grind / Low Battery Light tion 7.

OM-255503 Page 10 4-4. Mode Control Settings

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1 Mode Button ! If nearby objects may To use Grind mode, press 2 External Grind Mode inadvertently contact and hold the external Grind Button the external Grind button for two seconds. Mode button while Press Grind Mode button Press Mode button to select again to turn off Grind mode. the mode appropriate for the you are welding, un- work activity: plug the Grind Mode button to prevent ac- Weld Mode − used for most X-Mode − used for outdoor cidental activation of or low current welding ap- welding applications. In this the Grind mode. mode the lens turns on plications. In this mode the when it optically senses a lens turns on when it senses welding arc. Adjust shade, Grind Mode − used for met- weld current. Adjust shade, sensitivity, and delay set- al grinding applications. In sensitivity, and delay settings as needed. this mode the shade is fixed tings as needed. shade No. 3. No lens adjust- Cut Mode − used for cutting ments are possible. applications. In this mode Nearby welding may af- the lens turns on when it op- fect helmet operation tically senses a cutting arc. Use external Grind Mode when lens is in X-Mode. Adjust shade, sensitivity, button to select grinding Stay at least 12 ft (3.7 and delay settings as need- mode without raising hel- m) away from other ed. met. welding activity.

OM-255503 Page 11 4-5. Variable Shade Control

1 2

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1 Mode Button Grind − No. 3 only Press Mode Button to 2 Increase (+) And X-Mode − No. 8 − No. 13 select desired function: Decrease (-) Buttons Weld, Cut, or X-Mode. Use the + and − adjustment Start at the highest setting Use + and − adjustment buttons to adjust the lens and adjust lighter to suit the shade in the darkened state. application and your person- buttons to select desired shade. Use the table in Section 1-4 al preference. to select proper shade con- Begin welding or contin- trol setting based on your Variable Shade Adjust- ue with other lens ad- welding process. The shade ment Procedure justments. ranges for each mode are as Press Mode (On/Off) follows: button to turn lens On. Weld − No. 8 − No. 13 Helmet control display Cut − No. 5 − No. 8 will appear.

OM-255503 Page 12 4-6. Lens Delay Control

1 2 3

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1 Mode Button buttons to adjust delay from button to turn lens On. 2 Adjust Button 0 to 10 (0.1 to 1.0 second). Helmet control display will appear. 3 Increase (+) And De- The delay ranges for each crease (-) Buttons mode are as follows: Press Mode button to Select Delay by pressing the Weld, Cut, X-Modes − 0 − select desired function: Adjust button. Use the + / − 10 Weld, Cut, or X-Mode. buttons to adjust the time for Use Adjust button to se- the lens to switch to the clear Grind Mode − No delay adjustment lect delay, and then state after welding or cutting. adjust to desired delay The delay is particularly use- There is no lens delay using + / − buttons. ful in eliminating bright adjustment in the Grind Begin welding or contin- after-rays present in higher mode. ue with other lens amperage applications Lens Delay Adjustment adjustments. where the molten puddle re- Procedure mains bright momentarily after welding. Use the + / - Press Mode (On/Off)

OM-255503 Page 13 4-7. Sensitivity Control

1 2 3

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1 Mode Button Grind Mode − No sensitivity use the +/− buttons to 2 Adjust Button adjustment adjust sensitivity to the ! Do not weld in the lowest setting. 3 Increase (+) And Decrease (-) Buttons Grind mode; the lens Face the helmet in the di- will not darken. rection of use, exposing Use control to make the lens Sensitivity Adjustment it to the surrounding light more responsive to different Procedure conditions. light levels in various welding Press + button until the processes. Use a Mid- Adjust helmet sensitivity lens darkens, then press Range or 30−50% sensitiv- in lighting conditions hel- − button until lens clears. ity setting for most appli- met will be used in. cations. Helmet is ready for use. Press Mode (On/Off) Slight readjustment may be button to turn lens On. It may be necessary to adjust necessary for certain ap- Helmet control display helmet sensitivity to accom- plications or if lens is flashing will appear. modate different lighting con- on and off. ditions or if lens is flashing Press Mode button to On and Off. select desired function: Reduce Sensitivity set- Weld, Cut, or X-Mode. The sensitivity ranges for ting if lens stays dark each mode are as follows: Use the Adjust button to longer than Delay set- Weld, Cut, X-Modes − 0 − 10 select sensitivity, then ting.

Recommended Sensitivity Settings Stick Electrode Mid-Range Short Circuiting (MIG) Low/Mid-Range Pulsed & Spray (MIG) Mid-Range Gas Tungsten Arc (TIG) Mid/High-Range Plasma Arc Cutting/Welding Low/Mid-Range OM-255503 Page 14 4-8. Typical Lens Adjustment Procedure

Lens assembly displays prior settings when turned On. Retained settings are not shown in example.

In the Grind mode the lens is a fixed shade No. 3. No lens adjustments are possible. Adjusting Lens Assembly:

Turn lens On. Display screen appears.

Select mode (Weld, Cut, Grind, X-Mode).

Select shade by pressing +/− buttons.

Select Delay by pressing Adjust until Delay appears, then use the +/− buttons to set.

Select Sensitivity by pressing Adjust until Sens appears, then use the +/− buttons to set.

Press Adjust until full screen appears to confirm settings.

Begin work.

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OM-255503 Page 15 4-9. Info Control Button

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1 Info Control Button Arc Time − records the Arc Count − records the Press Info Control button to amount of time the lens number of times the lens select from the following assembly is in the dark darkens. See Section 4-11 functions: state (exposed to arc). See to reset the Arc Count. Section 4-11 to reset Arc Clock − displays actual Time. Lens automatically time of day in 24 hour for- exits the Info function mat. See Section 4-10 to after 30 seconds of in- set clock. activity.

OM-255503 Page 16 4-10. Clock Control

1 2 3 4

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1 Mode Button Press Info Control but- Press Adjust button to 2 Info Control Button ton once. Clock is dis- switch to minute setting. 3 Adjust Button played on screen. Press + / − buttons to Clock displays time in 24 4 Increase (+) And De- change minute setting. crease (-) Buttons hour format. Clock Procedure Press and hold Adjust Press Info Control but- button until only the hour ton to set. Press Mode (On/Off) digits are displayed. button to turn helmet On. Press Mode button to re- Helmet control display Press + / − buttons to turn to main control dis- will appear. change hour setting. play.

OM-255503 Page 17 4-11. Arc Time And Arc Count Control

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The arc time function re- 3 Adjust Button Press Info Control but- cords the amount of time the ton repeatedly until Time lens assembly is dark (ex- Arc Time / Count Proced- or Count is displayed on posed to an arc). The arc ure screen. count function records the number of times the lens Press and hold the Ad- darkens. just button to reset to Press Mode (On/Off) zero. 1 Mode Button button to turn helmet On. Helmet control display Press the Mode button 2 Info Control Button will appear. when finished.

OM-255503 Page 18 SECTION 5 − ADJUSTING HEADGEAR

5-1. Adjusting Headgear On T94 Series Helmets

There are four headgear adjustments: headgear top, tightness, angle adjustment, and distance adjustment. 1 Headgear Top Adjusts headgear for proper depth on the head to ensure 1 correct balance and stability. 2 Headgear Tightness 4 To adjust, turn the adjusting knob located on the back of the headgear left or right to desired tightness. 3 Angle Adjustment (Not Shown) Seven slots on the right side of the headband provide adjustment for the forward tilt of the helmet. To adjust, lift and reposition the control arm to the desired position. 4 Distance Adjustment Adjusts the distance be- 2 tween the face and the lens. To adjust, press black tabs on the top and bottom of the pivot point and use other hand to slide headgear forward or backward. Release tabs. (Both sides must be equally positioned for proper vision.)

Numbers on the adjustment slides indicate set position so both sides can be adjusted equally.

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OM-255503 Page 19 SECTION 6 − REPLACING THE GRINDING SHIELD OR LENS COVERS

6-1. Replacing Grinding Shield On T94i Helmet

! Never use the auto-darkening lens without the inside and outside lens covers properly installed. Welding spatter will damage the auto-darkening lens and void the warranty. 1 Grinding Shield 2 Retaining Clip 3 Tab Rotate both retaining clips to the Open position. Gently push shield toward bottom tab and remove shield from 1 helmet. Remove retaining clips from shield. Install clips in same loca- tion on new shield. (Retaining clips are not interchangeable.) Install new shield in helmet and rotate clips to the Lock position. Tear-Away Protective Sheets Tear-away sheets are available 2 to prolong the life of the grinding shield (see Parts List). 3 To install tear-away sheets, pull backing from both sides of the tear-away, remove white ad- hesive backing strips, and place on clear shield.

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OM-255503 Page 20 6-2. Replacing Lens Covers On Quick Release Helmets

2 2

6 5 4 3

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! Never use the Remove lens cover from at a time, into the lens hold- auto-darkening lens shell by pulling top center of ing channels. without the inside lens. Replace lens cover in and outside lens cov- lens holder by placing one Be sure the cover lens ers properly edge in place, bending lens is seated properly to installed. Welding cover, and inserting oppo- prevent fogging. spatter will damage site edge into lens holder the auto-darkening channel. Reinstall lens Auto-Darkening Lens lens and void the holder in helmet. 6 Lens Release Tab warranty. Inside Lens Cover Remove lens holder and Outside Lens Cover 4 Auto-Darkening Lens outside lens cover using in- 1 Lens Holder structions above. Press up 5 Inside Lens Cover on lens release tab and 2 Lens Holder Release Remove the inside lens push auto-darkening lens Points cover by pulling top center assembly from the inside to 3 Outside Lens Cover of lens cover from lens remove. holding channels. Remove lens holder by Replace the lens by align- pulling the holder away Replace the lens cover by ing it on the release tabs from the helmet on either gently bowing it in the cen- and pressing it in until it side of lens holder. ter and inserting it, one end snaps into place.

OM-255503 Page 21 SECTION 7 − REPLACING THE BATTERY

Be sure Positive (+) side of battery faces up.

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To replace the battery, re- holding tray out and re- side of the battery move the auto-darkening move the old battery. faces up (toward inside lens assembly (see Sec- of helmet). tion 6). Replace with Panasonic CR2450 lithium type bat- Reinstall the battery tray. 1 Battery Tray tery (1 required) (Miller Part To test battery, press the No. 217043). Mode button. The display After removing the lens as- screen should turn on. Re- sembly, slide the battery Be sure Positive (+) install the lens assembly.

OM-255503 Page 22 SECTION 8 − INSTALLING OPTIONAL MAGNIFYING LENS

1 Optional Magnifying Lens Starting at the bottom, slide magnifying lens into the helmet retaining brackets. Align the magnifying lens with the auto-darkening lens assembly. Reverse procedure to remove magnifying lens.

To prevent lens fogging, install flat side of magnifying lens toward auto-darkening lens.

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SECTION 9 − MAINTENANCE

NOTICE − Never use solvents or abrasive cleaning detergents. NOTICE − Do not immerse the lens assembly in water. The helmet requires little maintenance. However, for best performance clean after each use. Using a soft cloth dampened with a mild soap and water solution, wipe the cover lenses clean. Allow to air dry. Occasionally, the filter lens and sensors should be cleaned by gently wiping with a soft, dry cloth.

OM-255503 Page 23 SECTION 10 − TROUBLESHOOTING

Trouble Remedy

Auto lens not On – auto- Check battery and verify it is in good condition and installed pro- lens settings do not ap- perly. pear when the Mode but- Check battery surfaces and contacts and clean if necessary. ton is pressed. Check battery for proper contact and gently adjust contact points if necessary. This is particularly important if the helmet has been dropped.

Not switching – auto-lens Stop welding immediately: Press the Mode (On/Off) button. stays light and will not If power is On, review the sensitivity recommendations and adjust darken when welding. sensitivity. Clean lens cover and sensors of any obstructions. Make sure the sensors are facing the arc. Angles of 45 or more may not allow the arc light to reach the sensors.

Not Switching – auto-lens Fine-tune the sensitivity setting in small increments. In extreme stays dark after the weld light conditions, it may be necessary to reduce the surrounding arc is extinguished, or the light levels. auto-lens stays dark when no arc is present.

Sections of the auto-lens Stop welding immediately: The auto-lens may be cracked which are not going dark, distinct can be caused by the impact of dropping the helmet. lines separate the light and Weld spatter on the auto lens may also cause cracking. (The lens dark areas. may need to be replaced; most cracked lenses are not covered by warranty).

Switching or Flickering – Review the sensitivity setting recommendations and increase the the auto-lens darkens then sensitivity if possible. Be sure the arc sensors are not being lightens while the welding blocked from direct access to the arc light. arc is present. Check the lens cover for dirt and spatter that may be blocking the arc sensors. Increasing Lens Delay 0.1 − 0.3 second may also reduce switching.

Inconsistent or lighter Referred to as an angle of view effect, auto-darkening lenses auto-lens shading in the have an optimum viewing angle. dark state, noticeable on The optimum viewing angle is perpendicular or 90 to the surface the outside edges and cor- of the auto-lens. When that angle of view varies in the dark-state, ners. welders may notice slightly lighter areas at the outside edges and the corners of the lens. This is normal and does not represent any health or safety hazard. This effect may also be more noticeable in applications where magnifying lenses are used.

OM-255503 Page 24 SECTION 11 − PARTS LISTS

7 Miller

8 11

4 1 13

2 6 5 3 10

Ref. 260482

Figure 10-1. T94 Auto-Darkening Welding Helmet

OM-255503 Page 25 Item Part No. No. Description Quantity

Figure 10-1. T94 Auto-Darkening Welding Helmet

1...... 258864 ...... Shell, Helmet T94 (Includes Item 6) ...... 1 2...... 216327 ...... Lens Cover, Inside 4-1/4 x 2-1/2 in (5 Per Pkg.) ...... 1 3...... 260557 ...... Lens Assembly, ADF T94 W/Cable ...... 1 4...... 260197 ...... Covers, Side Window ...... 2 5...... 265304 ...... Lens Cover, Front T94 (5 Per Pkg.) ...... 1 6...... 265309 ...... Lens Holder, Front T94 ...... 1 7...... 260486 ...... Headgear, Gray (Includes) ...... 1 8...... *265891 ...... Kit, Headgear Adjust Angle ...... 1 9...... 770249 ...... Headband, Fabric ...... 1 ...... 079975 ...... Replacement O-rings For Kit 256178 (5 Per Pkg.) ..... 1 10...... 259574 ...... Tray, Battery ...... 1 ...... 217043 ...... Battery, Lithium (CR2450) ...... 1 11...... 770250 ...... Helmet Bag − Miller ...... 1 ...... ♦222003 ...... Adapters, Hard Hat (Not Shown) ...... 1 12...... 256179 ...... Button, Grind Mode ...... 1 13 ...... ♦212235 ...... Lens, 0.75 Magnification ...... 1 13 ...... ♦212236 ...... Lens, 1.00 Magnification ...... 1 13 ...... ♦212237 ...... Lens, 1.25 Magnification ...... 1 13 ...... ♦212238 ...... Lens, 1.50 Magnification ...... 1 13 ...... ♦212239 ...... Lens, 1.75 Magnification ...... 1 13 ...... ♦212240 ...... Lens, 2.00 Magnification ...... 1 13 ...... ♦212241 ...... Lens, 2.25 Magnification ...... 1 13 ...... ♦212242 ...... Lens, 2.50 Magnification ...... 1 * Adjustment Hardware Kit With O-rings. ♦Optional

OM-255503 Page 26 11

14 13

12 10

7 6 8 15 9 2 1

4 3

Ref. 260483

Figure 10-2. T94i Auto-Darkening Welding Helmet

OM-255503 Page 27 Item Part No. No. Description Quantity

Figure 10-2. T94i Auto-Darkening Welding Helmet

1...... 258854 ...... Shell, Helmet T94i (Includes Item 9) ...... 1 2...... 245819 ...... Clip, Retaining Grinding Shield ...... 2 3...... 258979 ...... Lens, Grinding Shield (Clear) ...... 1 4 ...... ♦258853 ...... Shield, Grinding Tear Away ...... 1 5...... 216327 ...... Lens Cover, Inside 4−3/16 in x 2−1/2 in ...... 1 6...... 259572 ...... Lens Assembly, ADF T94i Without Cable ...... 1 ...... 217043 ...... Battery, Lithium (CR2450) ...... 1 7...... 259574 ...... Tray, Battery T94i ...... 1 8...... 265304 ...... Lens Cover, Front ...... 1 9...... 265309 ...... Lens Holder, Front ...... 1 10...... 260197 ...... Covers, Side Window ...... 2 11...... 260486 ...... Headgear, Gray (Includes) ...... 1 12...... *265891 ...... Kit, Headgear Adjust Angle ...... 1 13...... 770249 ...... Headband, Fabric ...... 1 ...... 079975 ...... Replacement O-rings For Kit 256178 (5 Per Pkg.) ..... 1 14...... 770250 ...... Bag, Helmet (Miller Logo) ...... 1 ...... ♦222003 ...... Adapters, Hard Hat (Not Shown) ...... 1 15 ...... ♦212235 ...... Lens, 0.75 Magnification ...... 1 15 ...... ♦212236 ...... Lens, 1.00 Magnification ...... 1 15 ...... ♦212237 ...... Lens, 1.25 Magnification ...... 1 15 ...... ♦212238 ...... Lens, 1.50 Magnification ...... 1 15 ...... ♦212239 ...... Lens, 1.75 Magnification ...... 1 15 ...... ♦212240 ...... Lens, 2.00 Magnification ...... 1 15 ...... ♦212241 ...... Lens, 2.25 Magnification ...... 1 15 ...... ♦212242 ...... Lens, 2.50 Magnification ...... 1 * Adjustment Hardware Kit With O-rings. ♦Optional

SECTION 12 − LIMITED WARRANTY

LIMITED WARRANTY – Subject to the terms and conditions below, Miller Electric Mfg. LLC, Appleton, Wisconsin, warrants to its original retail pur- chaser that the new Miller equipment sold after the effective date of this limited warranty is free of defects in material and workmanship at the time it is shipped by Miller. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS. Miller auto-darkening lens helmets are warranted for 3 years from the date of purchase. Proof of purchase is required for warranty transactions so it is imperative that a copy of the original invoice or sales receipt be retained. For warranty transactions, contact your Miller Distributor.

Miller Helmet Warr 2018-01 Effective January 1, 2018 OM-255503 Page 28 OM-255503 Page 29 For product information, Owner’s Manual translations, and more, visit www.MillerWelds.com

Miller Electric Mfg. LLC An Illinois Tool Works Company 1635 West Spencer Street Appleton, WI 54914 USA