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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.
The operator must also use the machine in accordance with the ruling accident prevention
standards, operating conditions and characteristics of the machine.

DANGER
THE USE OF THE MACHINE FOR ANY OTHER PURPOSE THAN THAT DESCRIBED IN THIS
MANUAL RELIEVES THE MANUFACTURER OF ANY RESPOSIBILITY FOR DAMAGES TO
PERSONS, ANIMALS OR THINGS RESULTING FROM INAPPROPRIATE USE.

1.6 NOISE

The noise level (acoustic pressure) was determined with the machine running under no load
conditions with the readings of the 70 dB(A) inferior.

1.7 TECHNICAL FEATURES

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Содержание L/350

Страница 1: ...1 ...

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Страница 3: ... Starting the machine 15 4 8 Stopping the machine 15 4 9 Backfire 16 4 1O Safety devices 17 4 11 Refilling deoxidizer liquid 18 4 12 Refilling distilled or demineralized water 18 SECTION 5 Maintenance 5 1 Generalities 17 5 2 Every six months 17 5 3 Once year 18 5 4 Every four year 18 5 5 Putting the machine out of service 18 5 6 Scrapping 18 5 7 Disposing of the electrolyte 18 5 8 Disposing of the...

Страница 4: ... be cause of machine warranty coverage cancellation by manufacturer Manufacturer therefore declines any and all liability for injury to people or damage to property caused by failure to follow the instructions given in this manual Service work or overhauls involving complex operations must be entrusted to an authorized Technical Service Center which has the necessary specialized personnel or direc...

Страница 5: ...ance or lack of proper service If following repairs carried out by the owner without manufacturers consent due to installation of non original spare parts the machine has been changed and the damage was caused by these changes If the instructions given in this manual were not followed correctly Exceptional events Damage caused by negligence lack of care improper and bad use of the machine or incor...

Страница 6: ... light red 7 Booster 8 H a n d l e k n o b 9 holder 10 On indicator light 11 Shut off valve 12 Gas supply indicator1 hour 13 Flame arrester cap 14 Check valvecap 15 Special torch brass nozzletype 16 Standard torch needletype 17 Wheel 42 Torch hose fitting shut off valve 43 Burner tip 51 Power cord 230 V 50 Hz 56 Torch hose 66 Torch hose fitting 68 Identification plate her position ...

Страница 7: ...ral ventilation by means of suitable openings to the outside in compliance with the regulations in force in the user s country This machine is mainly used for soft and hard brazing applications in the fields of jewellery goldsmith costume jewellery dental mechanics micromechanics and for welding materials such as platinum beryl nickel thermocouples enamel copper glass quartz and for welding metal ...

Страница 8: ...n in this manual The operator must also use the machine in accordance with the ruling accident prevention standards operating conditions and characteristics of the machine DANGER THE USE OF THE MACHINE FOR ANY OTHER PURPOSE THAN THAT DESCRIBED IN THIS MANUAL RELIEVES THE MANUFACTURER OF ANY RESPOSIBILITY FOR DAMAGES TO PERSONS ANIMALS OR THINGS RESULTING FROM INAPPROPRIATE USE 1 6 NOISE The noise ...

Страница 9: ...operated Operator safety is a matter of considerable importance for machine design and fabrication When designing a new machine every effort is made to foresee every possible dangerous situation and naturally adopt suitable safety devices to counter them Therefore a careful reading of this manual and special care and attention whenever any intrinsically operations have to be carried out are obliga...

Страница 10: ...r by law and respect instructions given in this manual The personnel must respect the danger and caution symbols on the machine The personnel must not perform operations or interventions under their own initiative that lie outside their competence The personnel is obliged to notify superiors of any problem or dangerous situation that may arise The machine has been commissioned and tested with all ...

Страница 11: ...vapors 3 Easily flammable 4 Corrosive liquid when in touch with body members 5 Attention electrostatic discharge sensitive device 6 Flammable Do not approach free flames 7 Use protection glass 8 Use protection mask for respiratory tract 9 Use protection gloves 10 Before using the machine read the operating instructions carefully 11 Attention do not turn the handle knob while the flames are lit ...

Страница 12: ... perfect working order Before maintenance operations or repairs on the machine disconnect power Maintenance operations and repairs must only be carried out by personnel trained to perform these special functions At the end of the maintenance operations and repairs before restarting the machine the technical foreman must check that the work has been finished the safety device reactivated and the pr...

Страница 13: ...e tanks will be empty If REQUESTED or where PERMITTED The packaged electrolyte salts and or bottled demineralized water will be shipped according to the rules law and regulations of the machine s destination country 3 3 UNPACKAGING Make sure that The welder has not suffered damage during transportation and if necessary report to the manufacturer or authorized reseller 3 4 POSITIONING Set the welde...

Страница 14: ...generates heat Wait until the solution has cooled down DO NOT USE DETERGENTS OR LIQUID SOAPS DO NOT PREPARE the electrolyte solution inside the machine tank It must be prepared into an external vessel BEFORE being introduced inside the machine tank DANGER AVOID SPILLS ALLOW COOLING TIME THE ELECTROLYTE IS HIGHLY CAUSTIC AND CAN CAUSE SERIOUS SCALDS TO THE SKIN AND HUMAN BODY WHEN HANDLING THIS PRO...

Страница 15: ...or distilled water inside the electrolyte tank Pouring electrolyte solution daily will cause a crystallization inside the tank and consequent obstructions of machines hoses potentially causing a general malfunction 4 4 BOOSTER TANK FILLING 1 Loosen the handle knob Fig 1 8 and remove the Booster Tank Fig 1 7 2 Pour the deoxidizer liquid see sec 4 5 into the Booster Tank until it reaches the MAX mar...

Страница 16: ...ortion of 15 20 grams as a maximum per each liter of methyl alcohol 3 Close the container shake it up and wait until the product is fully dissolved before using 4 6 HAZARDOUS OPERATIONS DANGER When the flames are burning Do not unscrew the handle knob screw Fig 1 8 Do not unscrew the Safety Cap Fig 1 2 Do not bring flames or sparkles near the filling neck the safety car and booster tank booster ho...

Страница 17: ...ons 1 Put out the flame by turning rapidly the shut off valve Fig 1 42 and turn power knob to the zero position DANGER If this operation is performed slowly it can result in backfire 2 Slide the switch Fig 1 1 to the O position ATTENTION After turning off the machine and throughout the necessary cooling time approx 5 hours do not unscrew the safety cap this should happen tighten it back and start ...

Страница 18: ...FILLING DE OXIDIZER LIQUID This operation must be performed after 6 8 working hours or when you see that the flame is fading and getting shorter refill the with additional flux 1 Put out the flame 2 Turn off the welder 3 Unscrew the handleknob Fig 1 8 4 Pour liquiddeoxidizer intotheBooster until itreaches the maximum level by using the marked plastic sticker Fig 1 7 5 Reassemble the Booster cap an...

Страница 19: ...groove underneath the Booster Holder We recommend to replace the booster gasket and the handle knob O ring every six months Fig 5 22 24 To clean eventual encrustations on the bottom of the Booster Tank and inside the torch proceed as follows 1 Remove the liquid deoxidizer from the Booster Tank soak it horizontally together with the torch in a container filled with about 6 cm of water 2 Provide boi...

Страница 20: ...can be salvaged to companies specialized in recycling raw materials 5 7 DISPOSING OF THE ELECTROLYTE Neutralize it to PH7 by adding hydrochloric acid and small part of albite in powder and give disposition to an authorized company that handles toxic waste material 5 8 DISPOSING DEOXIDIZER LIQUID It can be regenerated by distillation Alternatively it must be handed over to a company specialized in ...

Страница 21: ...and remove the power cable Start with a brush spread soapy water all over the fitting and Booster Tank below the Booster holder Fig 5 7 9 17 on the torch hose fittings and torch cones Fig 1 10 15 16 If you see bubbles coming up it means that there is a gas leakage Replace the safety cap if necessary ATTENTION the same operation can be performed on the fittings and hoses inside the welder In this c...

Страница 22: ...o over compression of the cover OR Fig 5 45 Substitute the power circuit bard How to spot the short circuit diode 1 Disconnect the terminals of the two diodes Fig 5 27 from the cooper flat conductors 2 Using an OHM meter at OHM 1 measure the resistance between the body and the diode nominal value of 600 2000 OHM The defective diode gives a very low value even if you invert the OHM Meter points 3 R...

Страница 23: ... tip obstructed Booster tank obstructed Gas leakage in pneumatic channels Replace the check valve Clean the apparatus See sec 5 2 In case of gas leakage repeat steps REMEDY 3 above 7 Burner Tip burns and Back Flame occurs Flame is lit before the pressure arrives at the burner tip Burner tip excessively big whilst the the power regulator too low Turning machine off while leaving the flame mistakenl...

Страница 24: ...in the torch channel Soapy substance internally formed caused by contamination Substitute with new de oxidizer Remove excessive liquids until reaching the proper indication Remove accumulated humidity dismounting the torch and tubes drying them Empty tank repeat periodically with water then substitute the electrolyte solution ...

Страница 25: ...ter the tank cover and make sure that the O ring is positioned properly in its seat 5 Tighten the four nuts first manually and then by using a wrench 6 Connect the hose to the fitting connect the level sensors and the two copper conductors 7 Refill the tank with electrolyte 5 10 2 CONTROLLING PRESSURE ADJUSTING THE VALVE 1 Turn off the machine and remove the safety cap Fig 5 2 2 Fit the pressure g...

Страница 26: ...e the methyl alcohol contained in the Booster Tank would be sucked in thus contaminating the electrolyte 5 10 4 REPLACING THE VALVE 1 Turn off the welder and remove the pressure gauge or safety cap Fig 5 2 2 Unscrew the check valve cap Fig 4 A 13 3 Unscrew the threaded disk Fig 4 B 21 4 Remove the valve and relevant O ring from the seat 5 Install the new valve and relevant O ring Fig 4 C 23 53 6 T...

Страница 27: ...llowing information Machine Model Serial Number Year of Fabrication Ordering Code Number for the part required description of the part and the number required Shipping Instructions If this is not specified by Manufacturer even though doing its utmost to offer this service as efficiently as possible cannot and it will not be liable for any shipping delays caused by force majeure events Transportati...

Страница 28: ...28 FIG 5 SPARE PARTS ...

Страница 29: ...29 ...

Страница 30: ...30 ...

Страница 31: ...31 ...

Страница 32: ...the shut off valve Tab 6 16 Subsequently reopen back the shut off valve Back fire The back fire causes the permanent shut off of the flame arrester Tab 6 16 and interrupts the gas output from the torch The power supply will be cut off and the gas supply indicator Fig l 12 will move back to zero The flame arrester must be replaced Replacement of flame arrester Turn off the welder unscrew the safety...

Страница 33: ... B Standard torch HOW TO ADJUST THE POWER ACCORDING TO NEEDLE TIP SIZE Table 2 B Adjust the Power Control Knob and simultaneously check the Gas Supply Indicator according to Min and Max L h see Table 2 B Gas supply Indicator ...

Страница 34: ...34 Fig 8 Special torch for welder mod L 350 ...

Страница 35: ...g 9 Booster holder handle knob and booster tank layout 9 59 13 14 8 60 7 7 Booster tank 8 Handle knob 9 Booster holder 13 Flame arrester cap 14 Check valve cap 59 Handle knob O ring 60 Booster rubber gasket ...

Страница 36: ...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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