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Instruction manual NXT200/250 AC/DC   page 3

ENGLISH

Electromagnetic emissions and the radiation of electromagnetic disturbances

This welding equipment for industrial and professional use is in
conformity with the European Standard EN60974-10. The
purpose of this standard is to prevent the occurrence of situations
where the equipment is disturbed or is itself the source of
disturbance in other electrical equipment or appliances. The arc
radiates disturbances, and therefore, a trouble-free performance
without disturbances or disruption, requires that certain measures
are taken when installing and using the welding equipment. 

The

user must ensure that the operation of the machine does not
occasion disturbances of the above mentioned nature.

The following shall be taken into account in the surrounding area:
1.

Supply and signalling cables in the welding area which are
connected to other electrical equipment.

2.

Radio or television transmitters and receivers.

3.

Computers and any electrical control equipment.

4.

Critical safety equipment e.g. electrically or electronically con-
trolled guards or protective systems.

5.

Users of pacemakers and hearing aids etc.

6.

Equipment used for calibration and measurement.

7.

The time of day that welding and other activities are to be
carried out.

8.

The structure and use of buildings.

If the welding equipment is used in a domestic establishment it
may be necessary to take special and additional precautions in
order to prevent problems of emission (e.g. information of tem-
porary welding work).

Methods of reducing electromagnetic emissions:
1.

Avoid using equipment which is able to be disturbed.

2.

Use short welding cables.

3.

Place the positive and the negative cables close together.

4.

Place the welding cables at or close to floor level.

5.

Remove signalling cables in the welding area from the supply
cables.

6.

Protect signalling cables in the welding area, e.g. with
selective screening.

7.

Use separately-insulated mains supply cables for sensitive
electronic equipment.

8.

Screening of the entire welding installation may be con-
sidered under special circumstances and for special applica-
tions.

WARNING

Arc welding and cutting can be dangerous to the user, people working nearby, and the surroundings if the equipment
is handled or used incorrectly. Therefore, the equipment must only be used under the strict observance of all relevant
safety instructions. In particular, your attention is drawn to the following:

Electricity

- The welding equipment must be installed according to safety regulations and by a properly trained and qualified

person.

- Avoid all contact with live components in the welding circuit and with electrodes and wires if you have bare hands.

Always use dry welding gloves without holes.

- Make sure that you are properly and safely earthed (e.g use shoes with rubber sole).
- Use a safe and stable working position (e.g. avoid any risk of accidents by falling).
- Make sure that the welding equipment is correctly maintained. In the case of damaged cables or insulation work

must be stopped immediately in order to carry out repairs.

- Repairs and maintenance of the equipment must be carried out by a properly trained and qualified person.

Light and heat emissions

- Protect the eyes as even a short-term exposure can cause lasting damage to the eyes. Use a welding helmet with

suitable radiation protection glass.

- Protect the body against the light from the arc as the skin can be damaged by welding radiation. Use protective

clothes, covering all parts of the body.

- The place of work should be screened, if possible, and other persons in the area warned against the light from the

arc.

Welding smoke and gases

- The breathing in of the smoke and gases emitted during welding is damaging to health. Make sure that any

exhaust systems are working properly and that there is sufficient ventilation.

Fire hazard

- Radiation and sparks from the arc represent a fire hazard. As a consequence, combustible materials must be

removed from the place of welding.

- Working clothing should also be secure against sparks from the arc (e.g. use a fire-resistant material and watch out

for folds and open pockets).

Noise

- The arc generates surface noise according to welding task. In some cases, use of hearing aids is necessary.

Use of the machine for other purposes than it is designed for (e.g. to unfreeze water pipes) is strongly deprecrated. If
occasion should arise this will be carried out without responsibility on our part.

Read this instruction manual carefully

before the equipment is installed and in operation

Содержание NXT200 AC/DC

Страница 1: ...INSTRUCTION MANUAL NXT200 250 AC DC Valid from 0426 50113125...

Страница 2: ...CONTENTS Warning Electromagnetic emissions 3 Initial operation 4 Maintenance Technical data 5 Initial instructions 6 Circuit diagram 10 11 Spare parts list...

Страница 3: ...can be dangerous to the user people working nearby and the surroundings if the equipment is handled or used incorrectly Therefore the equipment must only be used under the strict observance of all re...

Страница 4: ...xcessive contact resistance Connect always the TIG connection in the minus socket and the return current cable in the plus socket The control signals from the TIG torch are trans formed to the machine...

Страница 5: ...f further maintenance or re calibration is required please contact your NEXUS distributor or service depart ment 7 pin Plug connections The functions of the 7 pin remote plug are as follows Pin 1 red...

Страница 6: ...meter Units of measurement of the selected parameter Overheating The overheating indicator is illuminated if welding is interrupted due to overheating of the machine Input voltage variations The mains...

Страница 7: ...meter The relevant LED will lit Pre flow s Pre flow is the period of time for which gas flows after the torch switch is pressed and before the HF arc is established or until the torch is lifted away f...

Страница 8: ...Penetration can be adjusted from 15 to 85 Electrode pre heating TIG AC Pre heating of the electrode will improve the ignition It is possible to select 15 levels of pre heating It is suggested to use...

Страница 9: ...0 2 sec Post flow 3 0 sec No slope up slope down Start amp 40 Stop amp 20 Second Current level 50 Base amp 50 Fast pulse frequency 100Hz Pause time Pulse time 0 1 sec Penetration TIG AC 65 Electrode P...

Страница 10: ...Instruction manual NXT200 250 AC DC page 10 NXT200 AC DC...

Страница 11: ...Instruction manual NXT200 250 AC DC page 11 NXT250 AC DC...

Страница 12: ...Instruction manual NXT200 250 AC DC page 12...

Страница 13: ...Instruction manual NXT200 250 AC DC page 13 SPARE PARTS LIST NXT200 250 AC DC...

Страница 14: ...End cover 2 61113340 Chassis cover 3 18509026 Button 4 18509023 Cover for button 5 76117010 Control box NXT200 5 76117012 Control box NXT250 6 45050302 Edging 7 18110002 Dinse coupling socket 8 74471...

Страница 15: ...5 Mains supply cable 3x2 5mm NXT200 3 74233060 Mains supply cable 4x1 5mm NXT250 4 17250072 Switch 2 pole NXT200 4 17250073 Switch 3 pole NXT250 5 71617001 Power PCB NXT200 12125043 Module PFC NXT200...

Страница 16: ...00 3 71617013 Mains filter PCB NXT250 4 16170017 Current sensor 5 71617007 Snubber PCB 6 12220206 Diode isotop 400V 2x100A 7 16160130 Transformer NXT200 7 16160133 Transformer NXT250 8 74471217 Wire h...

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