NewArc RT4000 Скачать руководство пользователя страница 9

 

RT5/4000

 

 

SECTION 5 — FAULT FINDING AND MAINTAINANCE

 

 

5.1 Machine operation 

 

Most problems with the RT4000/RT5000 can be over-
come by following the procedures below. 

 

No Digital Display on switch on. 

 

• 

Check that the machine is attached to a work-
ing  mains  supply  that  it  is  correctly  plugged  in 
and any isolator switches are closed. 

• 

Check the condition of the 2A fuse on the rear 
panel of the machine and replace if necessary.  

 

Note : make sure the fuse is replaced with one of 
the correct type and rating. It should be a 32 x 
6.3mm (1¼” x ¼”) ceramic bodied type with a rat-
ing of 2A ‘slow blow’ 

 

• 

Have a competent electrician check that there 
are  no  mains  fuses  or  overload  devices  inter-
rupted,  that  the  mains  plug  is  fitted  correctly 
and  that  there  are  no  loose  wires  or  connec-
tions,  check  that  there  are  no  breaks  in  the 
mains cable. 

 

Digital display lit but no output. 

 

• 

Make sure that the display is not reading ‘HOT’, 
if it is, it means that the RT4000/RT5000 has over-
heated, normally by exceeding its ’Duty Cycle’, 
and  the  power  stages  of  the  machine  have 
been  shut  down.  In  this  case,  leave  the  ma-
chine  switched  on  until  it  has  cooled  down,  if 
you  turn  the  machine  off,  the  cooling  fans  will 
be turned off and the cooling down period will 
be lengthened considerably. 

 

Note : If the RT4000/RT5000 is overheating on a 
regular basis or at current settings below the maxi-
mum, this would usually  indicate that the inside of 
the machine is choked with dust and therefore not 
being cooled correctly. For information about 
cleaning the dust out of the RT4000/RT5000 please 
refer to the relevant part of section 5.3.2, the three 
monthly service schedule. 
 

5.2  Welding Problems 

 

MMA 

 

If problems with the RT4000/RT5000’s operation while 
welding  are  experienced,  first  refer  to  the  informa-
tion in paragraph 3.2 in the installation section and 
paragraphs 4.3.1 and 4.3.2 in the operating section 
and  the  fault  finding  procedure  earlier  in  this  sec-
tion

 

 

 

• 

Most problems with MMA welding are the result 
of not setting the correct welding parameters 
for the welding rod being used.  All welding rod 
packets have information on them in symbolic 
format , giving suitable current range, polarity 
and type of weld (normally called 'position').  If 
you are in doubt about what these symbols 
mean, ask your welding rod supplier to explain 
them.  Choose an initial current setting towards 
the middle of the quoted range and if neces-
sary practice on a piece of scrap the same 
thickness as the job to be welded. 

 

TIG 

 

If problems with the 

RT4000/RT5000’s 

 operation 

while TIG welding are experienced, first refer to the 
information in paragraph 3.2 in the installation sec-
tion and paragraph 4.3.3 in the operation section. 

 

The common problems with TIG welding are poor 
striking, porosity and poor appearance of the 
weld. If you are experiencing any problems with 
TIG welding follow the check list below, this will 
cure most problems :-  

 

• 

If the unit is suffering from poor striking, check 
that all power leads are connected properly, 
check that there is sufficient gas flow and that 
the correct gas is being used, check that the 
earth clamp is making a good connection to 
the work-piece.  

• 

If there is porosity in the weld or the final weld is 
of poor appearance, check that there is suffi-
cient gas flow and that the correct gas is being 
used, check the condition of the TIG torch, par-
ticularly the gas hose. Make sure that the collet 
or gas lens in the torch head is not blocked in 
anyway. Check all gas connections are secure 
and that there are no leaks, use a leak detect-
ing spray on all connections if necessary.  

 

Any welding problems not covered above must be 
brought to the attention of a qualified Welding En-
gineer, if the problem still persists have the 
RT4000/RT5000 checked by a trained New-Arc ser-
vice engineer. 

 

 
 

Содержание RT4000

Страница 1: ...formation All persons authorised to use repair or service the RT4000 RT5000 Inverter welding unit should read the section on safety before any work is undertaken Further information is available in publication HSG118 Electric safety in arc weld ing which may be obtained from the Health Safety Execu tive Please contact your distributor should you not understand any of the information within this do...

Страница 2: ......

Страница 3: ..._________________ 6 SECTION 4 OPERATION 4 1 Operating Controls ____________________________________________________ 7 4 2 Description of Controls_________________________________________________ 7 SECTION 5 FAULT FINDING AND MAINTENANCE 5 1 Machine Operation____________________________________________________ 9 5 3 Maintenance__________________________________________________________ 10 SECTION 6 ...

Страница 4: ...dry The safe handling of gas cylinders The RT4000 RT5000 uses argon when TIG welding This is an inert gas and can displace oxygen in the atmosphere lead ing to asphyxiation Note Gas cylinders are under pressure and can explode if punctured Please ensure the cylinder is secured in a stable location away from any heat source or potential mechanical damage The cylinder must be securely fastened to a ...

Страница 5: ... 2 2 Specification Technical data RT4000 RT5000 Models Available 380 480 Volts 3 Phase 50 60Hz 380 480 Volts 3 Phase 50 60Hz Input Current at Max Output 25 amps 35 amps Power Consumption 18 KVA 25 KVA Recommended Mains Fuse 32A slow blow or type C MCB 40A slow blow or type C MCB Mains Cable 4 x 4 0mm flexible ca ble 4 x 4 0mm flexible cable Power Factor 0 95 0 95 Max Output Current 400 amps 500 am...

Страница 6: ... carrying capacity Make sure that the mains plug and socket if fitted are in good condition and are of the correct current carrying capacity If the machine is wired directly to the mains sup ply then an isolator switch must be fitted Note See the technical specifications page for correct supply information Primary cable length Long cable lengths may reduce the perform ance of the machine the weldi...

Страница 7: ... or TIG300 external TIG control unit There is no switch for remote operation plugging an external unit into the socket automatically selects remote operation and dis ables the internal current control 6 Torch switch socket For connecting the TIG torch control switch lead using DIN plug 7 Gas out connector This is a female quick coupling with an internal shut off valve To connect push the male conn...

Страница 8: ...Arc Force control to your personal preference for the size and type of welding electrode to be used The RT4000 RT5000 is suitable for welding all types of electrodes within the current rating of the machine see Technical Data The RT4000 RT5000 should never be used with arc air gouging or cutting electrodes 4 3 2 MMA Welding with remote control Select welding polarity as in paragraph 4 3 1 Plug the...

Страница 9: ... in the installation section and paragraphs 4 3 1 and 4 3 2 in the operating section and the fault finding procedure earlier in this sec tion Most problems with MMA welding are the result of not setting the correct welding parameters for the welding rod being used All welding rod packets have information on them in symbolic format giving suitable current range polarity and type of weld normally ca...

Страница 10: ...e the build up of dust and debris from inside the machine using either compressed air at low pressure or an industrial type vacuum cleaner Make a thorough visual inspection of the interior of the machine look particularly for pieces of welding wire that may have got through the cooling air intakes Check the condition of the mains input connector look for loose terminal block screws and make sure t...

Страница 11: ...RT5 4000 11 SECTION 6 ELECTRICAL DIAGRAMS 6 1 System Diagram ...

Страница 12: ...RT5 4000 12 4 2 3 5 7 6 10 12 11 14 8 9 1 13 SECTION 7 PARTS BREAKDOWN 7 1 Component Locations ...

Страница 13: ...RT5 4000 13 SECTION 7 PARTS BREAKDOWN 7 1 Component Locations 15 20 22 25 21 16 17 28 26 19 29 30 32 35 24 18 23 27 31 33 34 ...

Страница 14: ...mer M01406 13 HF Relay M70026 14 Soft start relay M70026 15 Mains Switch 3 phase power M70071 16 Control PCB M90744 17 TIG Display PCB M00923 18 TIG PCB M90650 19 Current Transducer M01083 20 IGBT x 2 M60245 21 Snubber Capacitors x 2 M40794 22 IGBT Gate PCB x 2 M90843 23 HF Transformer M01126 24 Power Resistors M90999 25 Gas Valve Assembly M90183 TIG 26 Capacitor Assembly M95004 27 Thermostat M003...

Страница 15: ......

Страница 16: ...ith a unique serial number and accompa nied with the guarantee New Arc reserve the right to a Repair b Replace c Authorise the reason able cost of repair or replacement at an approved New Arc service agent d Credit for any pur chased equipment less reasonable depreciation for actual use and condition at its entire discre tion This in no way affects your rights as a consumer The guarantee is enclos...

Отзывы: