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MILLER DIVING EQUIPMENT
INC.
Miller 400 Diving Helmet
Maintenance Manual
© Miller Diving All Rights Reserved
Document # 030715001
1

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Summary of Contents for Miller MILLER 400 DIVING HELMET

  • Page 1 MILLER DIVING EQUIPMENT INC. Miller 400 Diving Helmet Maintenance Manual © Miller Diving All Rights Reserved Document # 030715001...
  • Page 2: Table Of Contents

    MILLER 400 DIVING HELMET OPERATIONS AND MAINTENANCE MANUAL Part # 100-900 TABLE OF CONTENTS WARRANTY ..........................3 DEFINITIONS OF SIGNAL WORDS ..................4 IMPORTANT SAFETY INFORMATION .................. 5 SECTION 1: GENERAL INFORMATION INTRODUCTION ..................... 7 GENERAL DESCRIPTION OF MILLER 400 ..........7...
  • Page 3: Warranty

    Should any part become defective due to workmanship during the warranty period, contact your nearest autho- rized Miller dealer. If there is no dealer in your area, contact Miller Diving directly at (805) 965-8538, Fax (805) 966-5761, or E-Mail: Info@MillerDiving.com. You must have a return authorization number (RMA #) prior to the return of any item.
  • Page 4: Definitions Of Signal Words

    IMPORTANT: A Word about this manual. We reserve the right to make changes at any time, without notice, in prices, colors, materials, equipment, specifications, models and availability. Since some information may have been updated since the time of printing, please contact your local Miller Diving dealer if you have any questions. © Miller Diving All Rights Reserved...
  • Page 5: Important Safety Information

    IMPORTANT SAFETY INFORMATION This Miller 400 diving helmet is only intended for use by trained divers who have successfully completed a recognized training course in surface supplied diving. WARNING: Follow all the instructions in this manual carefully and heed all safety precautions.
  • Page 6 This manual is supplied to the original purchaser of this helmet. If you have any questions about the use of the helmet or you need another copy of this manual, Part Number 100-900, contact Miller Diving or your nearest Miller Diving dealer.
  • Page 7: General Information

    MILLER 400 DIVING HELMET. The Miller 400 Diving Helmet is designed for use with a surface supplied life support system. Breathing gas The term gas shall be used as a general term throughout...
  • Page 8: Operating Instructions And Procedures

    7. Verify emergency gas cylinder is full to rated capacity the cams. and is properly connected to Helmet. © Miller Diving All Rights Reserved Document # 030715001...
  • Page 9: 2-Coperating Instructions

    The umbilical should be hooked to the diving harness with a suitable snap. (Miller Diving Equipment manufactures a full line of diving harness and backpacks). Do not attach the umbilical to the weight belt. If it is necessary to jump off a high barge or boat, the side exhaust should be fully closed, the Regulator Exhaust par- tially closed, and a strong Free Flow turned on.
  • Page 10: 2-Erecommended Materials For Maintenance

    WARNING: Do not modify this helmet. Removal, modification or replacement of any MILLER component with non MILLER parts will make this helmet unsafe for diving. Use only genuine MILLER replacement parts! It can be determined if the Rubber Exhaust Valve is bro-...
  • Page 11 Fittings with tapered pipe thread (NPT) are sealed leak tight with Teflon Tape. ® BRASSO All brass and bronze parts with polished finish can be kept ® looking bright with Brasso or other metal polish. © Miller Diving All Rights Reserved Document # 030715001...
  • Page 12: Descriptions, Maintenance And Replacement

    DANGER: Never use any aerosol pro- 8. Remove old rubber sealant from Face Ring and Hel- pelled sprays near the face port of any Miller met by scraping with a blunt screwdriver or scraper. It is diving helmet. The Freon propellant used in...
  • Page 13: 3-Cnose Clearing Device

    Oral Nasal to the Regulator and out Regulator Exhaust. The Oral Nasal 10. Install Nose Device Rod and secure Rod with Nose reduces dead air space to a minimum to prevent C0 Device Knob. © Miller Diving All Rights Reserved Document # 030715001...
  • Page 14: 3-Efreeflow Manifold

    3. Wash parts in soapy water. Rinse and air dry. the Helmet which could result in serious injury to the diver. The Check Valve is used to prevent reverse flow 4. Lubricate threads with silicone grease. © Miller Diving All Rights Reserved Document # 030715001...
  • Page 15: 3-Gemergency Valve

    The Emergency valve control knob is not inter- a light coating of silicone grease. changeable with the defogger valve control knob. © Miller Diving All Rights Reserved Document # 030715001...
  • Page 16: 3-Hside Exhaust

    This may lead the diver to mis- is what all new Miller Helmets are equipped with. Match takenly assume his bailout supply is available the removed packing and washer to the new ones when it is not.
  • Page 17: Cams

    Body using a blunt screwdriver. (The purpose of clip ring is to prevent the handle from unscrewing all the way out Adjust Cams with a wrench and screwdriver. of the Exhaust Body). © Miller Diving All Rights Reserved Document # 030715001...
  • Page 18: 3-Jdemand Regulator

    If it is necessary to remove the regulator: 4. Pop Oral Nasal Mask free from Fitting. Miller has improved the standard Demand Regulator by encasing the internal working parts in a heavy duty, cast 5. Remove the six Screws holding the Retainer Plate.
  • Page 19 9. Inspect Diaphragm for pinholes, cracks or other dam- age. 10. Inspect O-rings for damage. 11. Inspect Inlet Valve Seat for wear and deep groves in the rubber disc. Check Free Movement and position of Lever (88) © Miller Diving All Rights Reserved Document # 030715001...
  • Page 20: 3-Kfaceseal

    DESCRIPTION: the diver. The Helmet should not be used for at least six (6) hours after gluing. The Miller Neck Ring consists of two Mating Rings, fifteen Screws, a chin strap and the Neoprene Neck Seal HEAD HARNESS Boot. The Neck Seal is conical shaped and is designed...
  • Page 21: 3-Nneck Ring Gasket

    The Helmet should not be used for at using a razor blade. Small holes or tears in Neck Seal least six (6) hours after gluing. can be repaired in the field with wetsuit glue. © Miller Diving All Rights Reserved Document # 030715001...
  • Page 22: 3-Ocommunications System

    6. Install new binding posts. with each individual. Salt water use, hand jetting and working in contaminated water all mean more frequent NOTE: Do not use substitutes as Miller Binding Posts maintenance. are fully insulated and designed specifically for the Miller Diving Helmet.
  • Page 23 See Page 20. 14. Inspect emergency valve for leaking. See Page 16. DANGER! Any helmet/dry suit system must be leak tested according to the manufacturer's instructions before EVERY dive in contaminated water! © Miller Diving All Rights Reserved Document # 030715001...
  • Page 24: Miller 400 Parts List And Exploded View

    MILLER 400 SERIES DIVING HELMET © Miller Diving All Rights Reserved Document # 030715001...
  • Page 25 © Miller Diving All Rights Reserved Document # 030715001...
  • Page 26: Miller Product Line Miller Weight Belts

    All stress points and joints are securely fastened with stainless steel rivets and large washer plates through triple layers of webbing. The D-rings and buckles are made of stainless steel. Over 12,000 various models of the Miller Harness are in service in the commercial diving industry and the U.S. Navy. Small size... fits approx ..32"-42" chest.
  • Page 27: Miller Backpacks

    MILLER BELL HARNESS The Miller Bell Harness is designed for bell or saturation use. In addition to the two front hook up D-rings, the harness 'features an elevated strap with hook up D-ring, positioned in back, about shoulder level. Thus a limp or unconscious diver would be pulled into the bell head first.
  • Page 28 Face & Neckrings, Handles, Valves, & Accessories Capability. are Polished Brass. All Valve Hardware and Fasteners are Stainless MILLER Regulator are High Strength Bronze Steel or Solid Brass. Castings W/Closable Exhausts. Lightweight, Approximately 27 LBS. Neutraly Two Adjustable Exhausts, One on the Helmet, One Buoyant on the Regulator.

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