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SUMMARY

y

Connect the work cable to the work as close to the welding area as practical. Work cables 

connected to the building framework or other locations away from the welding area increase the 
possibility of the welding current passing through lifting chains, crane cables or other alternate 
circuits. This can create fire hazards or overheat lifting chains or cables until they fail.

Rotating parts may be dangerous.

y

Use only compressed gas cylinders containing the correct shielding gas for the process used 

and properly operating regulators designed for the gas and pressure used. All hoses, fittings, etc. 

should be suitable for the application and maintained in good condition.

y

Always keep cylinders in an upright position securely chained to an undercarriage or fixed 

support.

y

Cylinders should be located:

- Away from areas where they may be struck or subjected to physical damage.
- A safe distance from arc welding or cutting operations and any other source of heat, sparks, 

or flame.

y

Never allow the electrode, electrode holder or any other electrically “hot” parts to touch a 

cylinder.

y

Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.

y

Valve protection caps should always be in place and hand tight except when the cylinder is in 

use or connected for use.

§1.3 The knowledge of Electric and Magnetic Fields

Electric current flowing through any conductor causes localized Electric and Magnetic 

Fields (EMF). The discussion on the effect of EMF is ongoing all the world. Up to now, no 
material evidences show that EMF may have effects on health. However, the research on damage
of EMF is still ongoing. Before any conclusion, we should minimize exposure to EMF as few as 
possible.

In order to minimize EMF, we should use the following procedures:

y

Route the electrode and work cables together – Secure them with tape when possible.

y

All cables should be put away and far from the operator.

y

Never coil the power cable around your body.

y

Make sure welding machine and power cable to be far away from the operator as far as 

possible according to the actual circumstance.

y

Connect the work cable to the workpiece as close as possible to the area being welded.

y

The people with heart-pacemaker should be away from the welding arc.

4

Содержание YT-81352

Страница 1: ...mpletely before attempting to use this equipment Save this manual and keep it handy for quick reference Pay particular attention to the safety instructions we have provided for your protection Contact...

Страница 2: ...MMA take YT 81352 for an example 8 4 Operation control and connectors 9 4 1 Layout for front rear panel example for YT 81352 9 4 2 parameters adjustment 10 4 3 Welding operation 10 4 3 1 Striking arc...

Страница 3: ...achine power please maintain and examine the equipment according to 5 because of the DC voltage existing in the electrolytic capacitors ELECTRIC SHOCK CAN KILL y Never touch electrical parts y Wear dr...

Страница 4: ...hich require special ventilation such as stainless or hard facing or on lead or cadmium plated steel and other metals or coatings which produce highly toxic fumes keep exposure as low as possible and...

Страница 5: ...elding area If this is not possible cover them to prevent the welding sparks from starting a fire Remember that welding sparks and hot materials from welding can easily go through small cracks and ope...

Страница 6: ...or any other electrically hot parts to touch a cylinder y Keep your head and face away from the cylinder valve outlet when opening the cylinder valve y Valve protection caps should always be in place...

Страница 7: ...uation to the current accurate stepless current adjustment and pre setting function There are also some automatic protection functions for under voltage over heat etc inside the welders when the probl...

Страница 8: ...t positive feedback control Single phase AC DC AC DC 220 230V 50 60Hz AC DC 2 3 Volt Ampere Characteristic YT series welders have excellent volt ampere characteristic seeing the following graph In MMA...

Страница 9: ...3 2 Duty cycle Over heat The letter X stands for duty cycle which is defined as the proportion of the time that a machine can work continuously within a certain time 10 minutes The rated duty cycle m...

Страница 10: ...INSTALLATION AND ADJUSTMENT 3 3 Welding polarity connection way 3 3 1 MMA Connection DCEP is only supported YT 81352 YT 81353 workpiece electrode DCEP Welding holder 8...

Страница 11: ...lding mode key 5 Earth connection Negative polarity output 6 Welding connection Positive polarity output 7 Value display Display the pre setting and realtime parameter value 8 VRD lamp VRD parameter i...

Страница 12: ...t accurately Change the welding mode by pressing the welding mode key Switch on or off the VRD function by pressing the knob for 3 seconds 4 3 Welding operation 4 3 1 Striking arc way z Knocking arc t...

Страница 13: ...fer to Welding Dictionary P69 Volume 1 of Edition 2 4 4 Welding parameters 4 4 1 Joint form in MMA In MMA welding the common basic joint form butt joint lap joint corner joint T joint 4 4 2 Electrode...

Страница 14: ...rs Undercut Over current Arc length is too long The electrode angle is wrong Manipulation of electrode is not proper Choosing the proper welding current speed The arc can t be drawn too long The elect...

Страница 15: ...lectrode falls off and lose protection Manipulation of electrode is not proper Clear out the dust around groove for about 20 30mm Strictly to dry the electrode according to manual Correctly to choose...

Страница 16: ...y Input power must be AC as one phase 50Hz 220 240V Forbid working in lacking any phase In case closing the power switch no load voltage may be exported Do not touch the output electrode with any part...

Страница 17: ...If there is one of the above problems find out the reason to get rid of if you can t find out the reason Please contact local this area our company agent or the branch company Observe that whether the...

Страница 18: ...eed to change and need to change or strengthen insulation 5 2 Troubleshooting z Before arc welding machines are dispatched from the factory they have already been debugged accurately So forbid anyone...

Страница 19: ...e welder s output Welding cable is broken Wrap repair or change the welding cable Earth cable is not connected or loosen Check the earth clamp 6 Not easy to start arc in the welding or easy to cause s...

Страница 20: ...rotection Over welding current Induce the welding current output Working time too long Induce the duty cycle interval work Over current protection Unusual current in the main circuit Test and repair t...

Страница 21: ...5 3 Electrical principle drawing YT 81352 19...

Страница 22: ...YT 81353 20...

Страница 23: ...m Radiator 18 ZY8135218 Transformer 19 ZY8135219 Plastic support strip Important parts of YT 81352 Serial Nmber ITEM NO Name 1 ZY8135301 Metal back panel 2 ZY8135302 Fan 3 ZY8135303 Switch 4 ZY8135304...

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