Welcome to eManuals.biz

In our store, you will find Workshop, Service, Installation, Parts, Owners, Information manuals and Schematics.

We can supply EPC software for Windows XP and Windows 7 packages to cover all models, for workshop and part manuals. These software packages are most suited for the professional or for the workshop.

Our collection of manuals are mainly for marine and some heavy equipment engines, current and old models. Our manuals and software are genuine and have been carefully selected.

How to find your manuals

Please select from the menu on the left your engine manufacturer, or use the search box on the top right of the menu bar to find your manuals. To be successful in your search, you must use your engine model in different variations for better results, e.g., M17 or Sole M17, 4.108M or Perkins 4.108 or, use the engine manufacturer, e.g., Perkins, Bukh, Sole, etc.

We handpick and thoroughly check our electronic manuals before we put them up for sale. We also supply these manuals on soft copy DVDs at an extra cost. We ship worldwide. Please contact us to make the necessary arrangements.

Special arrangements can be made for "express courier" at a reasonable price, through your courier or ours. Do not hesitate to contact us for a price or to place an order.


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Abbreviations used

  • maint: Maintenance manual, similar to workshop manual
  • supp: Supplement manual
  • ltd or LTD: Limited (Edition)
  • repairs: Repairs manual, similar to workshop manual
  • panel: Monitoring / controlling panel
  • digi-panel: Digital monitoring / controlling panel
  • gen: The electrical generator section of a generator set
  • v-reg: Voltage regulator
  • genset: Generator
  • ops: Operations manual, also called Owners Manual
  • inst: Installation manual
  • instal: Installation manual
  • schem: Schematics (wiring) manual
  • w-shop: Workshop manual
  • info: Information manual
  • owners: Owner's manual, also called Operations Manual
  • parts: Parts manual
  • tune-up: Tune up manual
  • all models software: Limited, factory EPC software to suit workshops

  • ATTENTION: Due to the nature of our product we can not accept product returns or offer refunds. Please choose carefully and if you are in doubt contact us before you make a purchase. We strongly advise you to read our Terms and Conditions before you place an order. For more information, please contact Sales


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    Free knowledge: UNDER WATER ARC WELDING

    INTRODUCTION

    . The fact that electric arc could operate was known for over a 100 years. The first ever underwater welding was carried out by British Admiralty - Dockyard for sealing leaking ship rivets below the water line. Underwater welding is an important tool for underwater fabrication works. In 1946, special waterproof electrodes were developed in Holland by ‘Van der Willingen’. In recent years the number of offshore structures including oil drilling rigs, pipelines, platforms are being installed significantly. Some of these structures will experience failures of its elements during normal usage and during unpredicted occurrences like storms, collisions. Any repair method will require the use of underwater welding.

    CLASSIFICATION

    . Underwater welding can be classified as 1) Wet Welding 2) Dry Welding In wet welding the welding is performed underwater, directly exposed to the wet environment. In dry welding, a dry chamber is created near the area to be welded and the welder does the job by staying inside the chamber.

    WET WELDING

    Wet Welding indicates that welding is performed underwater, directly exposed to the wet environment. A special electrode is used and welding is carried out manually just as one does in open air welding. The increased freedom of movement makes wet welding the most effective, efficient and economical method. The welding power supply is located on the surface with connection to the diver/welder via cables and hoses.

    . In wet welding MMA (manual metal arc welding) is used. Power Supply used : DC Polarity : -ve polarity When DC is used with +ve polarity, electrolysis will take place and cause rapid deterioration of any metallic components in the electrode holder. For wet welding AC is not used on account of electrical safety and difficulty in maintaining an arc underwater. . Power . Supply . Electrode Holder . Electrode work . Knife Switch

    . The power source should be a direct current machine rated at 300 or 400 amperes. Motor generator welding machines are most often used for underwater welding in the wet. The welding machine frame must be grounded to the ship. The welding circuit must include a positive type of switch, usually a knife switch operated on the surface and commanded by the welder-diver. The knife switch in the electrode circuit must be capable of breaking the full welding current and is used for safety reasons. The welding power should be connected to the electrode holder only during welding. . Direct current with electrode negative (straight polarity) is used. Special welding electrode holders with extra insulation against the water are used. The underwater welding electrode holder utilizes a twist type head for gripping the electrode. It accommodates two sizes of electrodes.

    . The electrode types used conform to AWS E6013 classification. The electrodes must be waterproofed. All connections must be thoroughly insulated so that the water cannot come in contact with the metal parts. If the insulation does leak, seawater will come in contact with the metal conductor and part of the current will leak away and will not be available at the arc. In addition, there will be rapid deterioration of the copper cable at the point of the leak.

    HYPERBATIC WELDING

    . Hyperbaric welding is carried out in chamber sealed around the structure o be welded. The chamber is filled with a gas (commonly helium containing 0.5 bar of oxygen) at the prevailing pressure. The habitat is sealed onto the pipeline and filled with a breathable mixture of helium and oxygen, at or slightly above the ambient pressure at which the welding is to take place. This method produces high-quality weld joints that meet X-ray and code requirements. The gas tungsten arc welding process is employed for this process. The area under the floor of the Habitat is open to water. Thus the welding is done in the dry but at the hydrostatic pressure of the sea water surrounding the Habitat.