BorMann BIW4005 Owner's Manual page 5

Notice item
Usage environment
1. Use the machine in quite drying air. Humidity 80%;
2. Ambient temperature is in the range from-I0*C to +40' C;
3. The machine is suitable for using indoors in order to avoid using in direct sunshine or rain outdoors;
4. Avoid operating the machine in the environment within which has much dust or aggressive gas.
Safety summary
1 .Make sure of good air -cooling condition.
The machine has a relatively small inside room, and output current is large. So that natural air-cooling condition can't meet
requirement of element heat emission. Therefore, the machine inside has been installed with cooling fan to force air-cooling.
Both front and back of the cutter shouldn't be covered and blocked up. Position of the cutter should not be less than 0.3
meter away from object around in order to improve air-cooling condition all the time.
Because it is very important to normal operation and service life of the cutter.
2. Be sure not to be overloading
Strictly prohibit overloading operation or it will stop operation abruptly during Cutting. Make fan continuously work in order
quickly cooling the machine inside temperature.
3. Be sure not to be over voltage.
The power voltage ranges of the cutter please refer to table of main technical parameter. In correct voltage, the machine
inside will automatically compensate circuit, which will cause welding current not above permitted level. If power voltage is
over specified value, it will lead damage of elements. User needs to take care of this point.
4. There is an earth linking screw at the back of each cutter. Symbol is earth mark. Before operation, please choose lead of
which section is 1Omm2 to reliably earth in case of electricity leakage cause failure. During operation, please note don't
touch output terminal with hand in case of electric shock.
Cutting notice items
1. When you prepare cutting, you hold cutting torch (if it is non-contact arc starting machine type, cutting torch don't contact
work-piece and press switch of cutting torch, at this time plasma arc ejects out of nozzle hole. It means that installation of
electrode and nozzle is correct. If there is no plasma arc ejects or there is slight plasma arc ejects out of nozzle hole, it means
that installation of electrode and nozzle is not correct. Tum off the machine and re-install it.
2. At the beginning of cutting. External rim of nozzle hole aligns with edge of work-piece. It will start arc by pressing switch of
cutting torch. If it doesn't start arc, let go of switch of cutting torch and repress switch of cutting torch, After starting arc,
move cutting torch with average speed to carry out normal Cutting (mobile speed changes according to different plate
thickness, sparkle shoot up, which means mobile need is too quick and work-piece haven't been full depth cut, so that you
should slow down mobile speed). If spatter fly out vertically, it means mobile speed is too slow, welding slag maybe
increases, so that please increase welding speed properly.
3. When cutting finishes and work-piece will be cut off, cutting speed should be slow, let go of switch of cutting torch, i.e.
cutting is finished.
4. If spatter is attached to nozzle surface, it will affect cooling effect of nozzle, so that you should eliminate spatter in time.
And you should often eliminate dust and spatter on the head of cutting torch in order to keep good heat emission effect.
5. Wheel of cutting torch is to make sure distance between plane surface of nozzle and plate. During cutting, strictly prohibit
unloading stand of cutting torch or it will not guarantee distance between nozzle and plate, which will cause nozzle to touch
plate to lead to burning and damage of cutting torch.
6. Change of electrode and nozzle.
You should change electrode and nozzle when the case below arises. (A)Consumption depth of electrode is above 1.5mm;
(B) Regular distortion of nozzle aperture;
(C) Cutting speed obviously gets slow, arc has green flame; (D) Arc starting is difficult;
(E) Cut deflects or gets wide.
When the case above arises, you should change electrode and nozzle or it will cause strong arc in the nozzle, breakdown
electrode and nozzle, even bum and damage cutting torch. Different type of nozzle is different, so that you should guarantee
type unity when changing nozzle.
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