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ET Hydrogen L/350 Operating Instructions And Maintenance

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Summary of Contents for ET Hydrogen L/350

  • Page 3: Table Of Contents

    INDEX Presentation Warranty 1.2.1 Exclusions from warranty 1.3 Machine identification 1.4 Equipment 1.5 Machine description and use limitation 1.5.1 Description 1.5.2 Use limitation 1.6 Noise Technical features SECTION 2: Safety and prevention Safety 2.1.1 General safety regulations Safety signs (Symbols) Safe use and maintenance SECTION 3: Transport and installation Packaging...

  • Page 4: Presentation

    SECTION 1 Description and main features of the welder 1.1 PRESENTATION This manual gives information regarded as necessary to know, use correctly and carry out normal maintenance operations on this welder « L/45 » (hereinafter referred to as machine) fabricated by «Elettronica Todescato S.r.l.»...

  • Page 5: Warranty

    1.2 WARRANTY Elettronica Todescato Srl ensures that the machine referred to in this manual has been tested in its own premises. The machine is guaranteed for 1 year (12 months) from the date of purchase. Should the machine be tampered with or improperly used, particularly concerning the safety devices, the warranty will be voided and the manufacturer will be discharged from any liability whatsoever.
  • Page 6 FIG. 1 - WELDING AND COMPONENTS LEGEND Fig.1 Three-position switch Safety cap Circuit breaker Power control knob Minimum level indicator light (yellow) Maximum level indicator light (red) Booster H a n d l e k n o b holder 10. On indicator light 11.

  • Page 7: Equipment

    − MACHINE DESCRIPTION AND USE LIMITATION The «ET- hydrogen L/350 Welder is a machine marked with « CE» symbol i n compliance with E u r o p e a n Union regulations pursuant to EEC Directive 2014/35/UE and 2014/30/CE as detailed in the UE Declaration of Conformity annexed to each machine.

  • Page 8: Noise

    It is not permitted to operate the machine when the flame is out. This would result in an accumulation of explosive mixture in the surrounding environment and pollution caused by the methyl alcohol. The machine has been designed for professional use. The operator must be of proven ability and capable of reading and understanding the instructions given in this manual.

  • Page 9: Section 2: Safety And Prevention

    FIG. - MACHINE LAYOUT Gas production It/h Water consumption gr/h Alcohol consumption gr/h 0,68 Booster tank capacity Maximum power Watt 1500 Electrolyte Weight TABLE 1 SECTION 2 Safety and Prevention 2.1 SAFETY The owner of the machine must instruct personnel about the risk of industrial accident, the safety device installed for operator safety and on general industrial accident prevention regulations applied by law in the country where the machine is to be operated.

  • Page 10: Safety Signs (Symbols)

    ATTENTION Failing to comply with the information described in «Section 2 – Safety and Prevention» and the mishandling of the safety devices relieves the Manufacturer from any responsibility in the event of accidents, damage or machine malfunctions. General rules: The user undertakes to entrust the machine to qualified and trained personnel only. The user is bound to take all the necessary measures for preventing unauthorized personnel from accessing the machine.
  • Page 11 The following warnings refer to Figure 3. Read them carefully and learn their meaning. 1) Excessive voltage. Before interventions, disconnect power. 2) Toxic substance, if swallowed. Do not inhale the vapors. 3) Easily flammable. 4) Corrosive liquid when in touch with body members. 5) Attention, electrostatic discharge sensitive device.

  • Page 12: Safe Use And Maintenance

    FIG. 3 · · AFETY SIGNS 2.3 SAFE USE AND MAINTENACE ATTENTION The use of the machine is prohibited to: o Operators who have not read and understood the instructions given in this manual; o Inexperienced persons; o Operators not in good physical/mental health. Periodically check that the machine and its protection devices are in perfect working order.

  • Page 13: Section 3: Transport And Installation

    During maintenance operations and repairs, protective clothing must be worn, i.e. protective eyewear, gloves for preventing cuts and mask for respiratory tract protection. Do not use water jets to clean the machine. SECTION 3 Transport and Installation 3.1 PACKAGING The welder is wrapped up in a polythene film and subsequently packed in a three-layer waterproof cardboard box sealed with adhesive tape and secured by a double strap.

  • Page 14: Section 4: Use

    SECTION 4 4.1 CONNECTION TO THE ELECTRIC CIRCUIT Check that the main voltage corresponds to the voltage indicated on the plate at the rear of the welder (Fig. 1 # 21). Test the electrical circuit grounding to make sure that is it efficient. Slide the switch (Fig.1 # 1) to the “O”...

  • Page 15: Booster Filling

    2) BEFORE ANY RE-FILL OPERATION, REMOVE THE BOOSTER TANK (FLUX) ALWAYS FIRST, (Fig 1 # 7). 3) Remove the safety cap (Fig.1 # 2). 4) Through the use of a funnel, slowly pour the electrolyte previously prepared thought the filling neck (Fig.1 # 3) and into the tank (Fig.5 # 46). The “MAX” yellow light (Fig.1 # 5) will go out.

  • Page 16: Hazardous Operations

    DANGER METHYL ALCOHOL IS BOTH FLAMMABLE AND TOXIC. HANDLING MUST TAKE PLACE AWAY FROM FLAMES, SPARKES AND HEAT SOURCES. IN GENERAL AVOID CONTACT WITH THE MOUTH AND AVOID INHALING ITS VAPORS. By dissolving boric acid with methyl alcohol (as explained hereunder) you will obtain a green flame with high deoxidizing power, that is indispensable for braze welding operations, since it ensures optimal flow and penetration of the solder.

  • Page 17: Stopping The Machine

    5) Wait for approximately two minutes, until you hear/feel the emission of gas from the burner tip (Fig.1 # 11). 6) Light the torch with a standard lighter or an electronic igniter. Clean the orifice (Fig. 1 # 11) with a thin steal wire or other similar safe object, in order to not cause personal harm or damage the burner tip.

  • Page 18: O Safety Devices

    - Backfiring causes a detonation in the booster and if there is no deoxidizer the flame will reach the flame arrester. In about 20 seconds the power supply indicator will be cut off and the gas supply indicator ( Fig. 1 # 12) will move back to zero .

  • Page 19: Section 5: Maintenance

    SECTION 5 MAINTENANCE 5.1 GENERALITIES ATTENTION Any maintenance operation inside the welder must be performed solely by adequate technicians who have been officially trained. DANGER INSIDE THE MACHINE, THERE ARE LIVE COMPONENTS (230 OR 115 VOLT AC), CONTACT WITH THESE PARTS CAN CAUSE ELECTRIC SHOCK. 5.2 EVERY SIX MONTHS Disconnect the plug from the intake.

  • Page 20: Every Four Year

    5.4 EVERY FOUR YEARS Every four years the machine must undergo a complete technical and operational review. Such operation must be performed by the manufacturing firm or by skilled technical personnel. ATTENTION The manufacturing firm is not liable for any damage caused by the machine due to lack of review.
  • Page 21 MALFUNCTION REMEDY CAUSE The burner tip diameter Change the burner tip – 1) The pointer of the gas is insufficient. see Table 2. supply Obstructions due to Clean the apparatus scale formation. See sec. 5.2 indicator (Fig.1 # 20) returns back to zero. The flame is faint and The electrolyte has Replace the electrolyte...
  • Page 22 the flame off and the power control set at the maximum value. 3. Unplug the welder and touch immediately the body of the two rectifier diodes. 4. The temperature of the faulty diode is lower than that of the other diode. How to replace the faulty diode: Spread silicone grease all over...
  • Page 23 anode is not in contact with the cathode. If the transformer is short- circuit, substitute the item. 5. Change the ventilator if needed. Verify that the internal cables are isolated or that there is no short- circuit caused by the liquid consumed internally, if so, clean with demineralized...
  • Page 24 The flame appears Red Flux / deoxidizer is Substitute with new de- or fluctuates. consumed. oxidizer. Liquid levels are above Remove excessive max limits. liquids until reaching Humidity Accumulation the proper indication. in the torch channel. Remove accumulated Soapy substance humidity, dismounting internally formed, the torch and tubes,...

  • Page 25: O Interventions

    5.10 INTERVENTIONS 5.10.1 WHAT TO DO IN ORDER TO SEE IF THE TANK IS SHORT- CIRCUITED 1) Disconnect the plug from the correct outlet. 2) Remove the screws and remove the two copper conductors (Fig.5 # 50) from the tank cover (Fig.

  • Page 26: Replacing The Valve

    If is very important that the valve is tight, since this enables the machine to maintain a minimum pressure of approx. 0.3 Bar inside the tank, even after several hours. Keep in mind that when the machine is not working, the tank cools down causing a pressure drop. If for some reason there is a total lack of pressure, the methyl alcohol contained in the Booster Tank would be sucked in, thus contaminating the electrolyte.

  • Page 27: Replacing The Electrolyte

    5.10.5 REPLACING THE ELECTROLYTE 1) Empty the exhausted electrolyte. 2) Pour 0,445 Lt (0,118 US gal) of demineralized water into the tank, shake well and empty. 3) Repeat this operation until the water that comes out is clean. 4) Pour the new electrolyte into the tank (sec. 4.2). SECTION 6 SPARE PARTS 6.1 SPARE PARTS...

  • Page 28: Spare Parts

    FIG. 5 SPARE PARTS...
  • Page 32 Adjust the Power Control Knob and simultaneously check the Gas Supply Indicator, according to Min and Max L/h (see Table 2*A) SPECIAL TORCH WITH FLAME ARRESTER Before lighting the special torch you must adjust power control knob ( Fig. l # 4) so that the gas supply indicator ( Fig.
  • Page 33 Welder L/350 Table 2*B Standard torch HOW TO ADJUST THE POWER ACCORDING TO NEEDLE TIP SIZE: Gas supply Indicator and simultaneously Adjust the check the Gas Power Supply Indicator, Control Knob according to Min Table 2*B and Max L/h (see...
  • Page 34 Fig. 8 Special torch for welder mod. L/350...
  • Page 35 Fig. 9 - Booster holder, handle knob and booster tank layout. Booster tank Handle knob Booster holder Flame arrester cap Check valve cap Handle knob O-ring Booster rubber gasket...
  • Page 36 ELETTRONICA TODESCATO Srl 36057 Arcugnano (Vicenza) Italia- Via A Volta, 9/A-C Tel. +39- 444 289227- Fax +39- 444 289229 www. elettronicatodescato.com e.mail: info@elettronicatodescato.com...

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