41
42
Nr. Troubles
Solution
Reasons
6
7
8
9
10
11
Gas pipe not connected or pressure
is too low
Input voltage is not correct
Gas pressure too low or too high
The gas distributor is uninstalled
Torch parts are worn
The cutting torch is broken
Power supply is overheated
Torch consumbles are worn
Air regulator is broken
Incorrect setting of cutting current
Cutting current is too low
Increase the cutting current
Reduce cutting speed
The movement of torch is too fast
Faulty components in the machine
Faulty components in the machine
Change or repair it
Check and replace
Change it
Consult the dealer or manufacturer
to repair
Check the gas connection, adjust the
proper setting
Consult the dealer or manufacturer
to repair
Check and adjust the cutting current
Consult the dealer or manufacturer
to repair
Excessive oil or moisture in torch
Do not directly start to cut before
cleaning the torch
Check the air pressure and air flow
lack of air pressure
Check and adjust the gas setting
at least 65psi/4.5 bar
let meachine cool down 5 minutes
and make sure the duty cycle is
not exceeded
Check and change the torch parts
Consult the dealer or manufacturer
to repair
Install it
Machine is in trouble
The connection between cutting
torch and machine is not correct or
the connection is poor
Check the torch leads are properly
connect to the machine
Earth clamp not correctly connect to
the work piece
Gas pressure too low , the torch/gas
indicator is on when torch switch is
pressed
Make sure the earth clamp has a
proper connection to a clean and
dry area of the workpiece
Adjust it to proper rate
Choose the proper voltage
Faulty components in the machine
When torch is
pressed the torch
is difficult to ignite
After triggering
the torch ,the pilot
arc cannot change
to the cutting pilot
Arc shuts off during
operation and it will
not restart when
torch is triggered
The power indicator
is on ,fan is working
but no gas flow , gas
indicator is on
low cutting output
Torch can cut but
the quality is poor
Observe that whether panel knob and switch in the front and at the
back of arc welding machine are flexible ane put correctly in place.If
the knob has not been put correctly in place, please correct, If you can’t
correct or fix the knob, please replace immediately
If the switch is not flexible or it can’t be put correctly in place, please
replace immediately; Please get in touch with maintenance service
department if there are no accessories
A f t e r t u r n - o n p o w e r, w a t c h / l i s t e n t o t h a t w h e t h e r t h e a r c w e l d i n g
machine has shaking, whistle calling or peculiar smell. If there is one
o f t h e a b o v e p r o b l e m s , f i n d o u t t h e r e a s o n t o g e t r i d o f , i f y o u c a n ’ t
find out the reason, Please contact local this area agent or the branch
company
Observe that whether the display value of LED is intact. If the
display number is not intact, please replace the damaged LED. If it still
doesn’t work, please maintain or replace the display PCB
Observe that whether the min/max value on LED accords with the set
value.If there is any difference and it has affected the normal welding
craft, please adjust it
Check up that Whether fan is damaged and is normal to rotate or control
. If the fan is damaged,please change immediately.If the fan does not
rotate after the arc welding machine is overheated, observe that whether
there is something blocked in the blade,if it is blocked,please get rid of;
If the fan does not rotate after getting rid of the above problems, you can
poke the blade by the rotation direction of fan.If the fan rotates normally,
the start capacity should be replaced; If not, change the fan
Observe that whether the fast connector is loose or overheated. If
the arc welding machine has the above problems,it should be fastened
or changed
Observe that Whether the current output cable is damaged. If it is
damaged, it should be wrapped up, insulated or changed
Using the dry compressed air to clear the inside of arc welding machine.
Especially forclearing up the dusts on radiator, main voltage transformer,
inductance, IGBT module, the fast recover diode and PCB, etc
Check up the bolt in arc welding machine,if it is loose,please screw
down it.If it is skid, please replace.If it is rusty,please erase rust on bolt
to ensure it works well
Whether the actual current accords with the displaying value.If they
does not accord, they should be regulated.The actual current value can
be measured by the adjusted plier-type ampere meter
Measure the insulating impedance among the main circuit,PCB and
case, if it below 1MΩ,insulation is thought to be damaged and need to
change, and need to change or strengthen insulation
Date
Daily
examination
Monthly
examination
Quarter-
yearly
examination
Yearly
examination
Maintenance item
◆
Warning:For safety while maintaining the machine,please shut off the supply power
and wait for 5minutes,until capacity voltage already drop to safe voltage 36V!
5.1 Maintenance
In order to guarantee that arc welding machine works high-efficiently and in safety,it must
be maintained regularly.Let customers understand the maintenance methods and means
of arc welding machine more, enable customers to carry on simple examination and
safeguarding by oneself,try one’s best to reduce the fault rate and repair times of arc
welding machine, so as to lengthen service life of arc welding machine.Maintenance
items in detail are in the following table.
Troubleshooting
Maintenance
PLASMA
CUTTING SERIES EQUIPMENT
PLASMA
CUTTING SERIES EQUIPMENT
