CHENGDU HUAYUAN ELECTRIC EQUIPMENT CO.,LTD
LGK-100.160.200
18
The cutting surface will be a little slant and the upper side will be a little round
when cutting with air plasma. Though the slanting range is acceptable during the
welding process, in order to improve the cutting quality, many people paid attention
on it. Usually slowing down the cutting speed properly can avoid the slanting, but this
may enlarge the cutting surface and decrease the production capacity. So this
measurement is not wildly used. Recently, people can avoid the slanting by the nozzle
improvement, this is called super cutting method. That is adopting muti-nozzle during
the cutting process, the air current from the small hole is parallel with those from the
main hole, this can avoid the falling of the plasma flame to get the parallel cutting
surface, square upper side and no slag seam on the lower side.
十一
. Troubleshooting & repair
If there is trouble caused by high voltage in the machine, professional
electrician or
serviceman of our company should be asked to repair.
Please check following first when there is trouble.
1
、
The three-phase power should be 380±40VAC
，
check if it missed phase or voltage
fluctuation exceeds its supply range.
2
、
Check if the supply abnormity indicator lamp is ON. If it is ON, check if the
three-phase power switch of switchbox is damaged, and if the fuse and the machine
power wire are well firmed. Otherwise it will cause phase missing or bad contact,
which makes the machine work abnormally.
3
、
Check if the torch switch and its wire are damaged or short-circuit, and if the nozzle
and electrode are damaged.
4
、
If control pin has connection error when customers use different torch, refer to
Connection of Torch in manual to check it.
5
、
Check the cutting ground wire is in good condition.
6
、
Check if compressed gas inhaler at the back of the machine can drain regularly.
7、
Check if the panel gas pressure indicator lamp is ON. If it is not ON, check if
compressed gas pipe is firmly connected with normal pressure. When the pressure is
less than 0.3Mpa, the lamp is not ON.
8、
Check if the panel overheat indicator lamp is ON. If yes, check if the temperature
relay on the radiator is damaged or not.
9
、
Open the coping to check if the lead type fuse beside the control transformer has
been fused.
Ordinary trouble and repair as following diagram
Trouble
Reasons
Solutions
1.When the power is
switched
on,
the
lamp and the digital
meter are not ON.
1.Three-phase power misses phase
2.Supply power is damaged
3.Power control fuse is broken
1.Check three-phase power source
2.Change power switch
3.Change power control fuse
2
．
Supply abnormity
indicator lamp is ON
without arc striking
1
．
Three-phase power misses phase
2. Three-phase power overload or
in low voltage
Check three-phase power source to
ensure the supply voltage accords with
the supply requirements.
