Hwayuan Electric LGK-40/63IGBT User manual

LGK-40/63IGBT
IGBT INVETER AIR PLASMA CUTTING
MACHINE
OPERATOR’S MANUAL
(PLEASE READ IT CAREFULLY BEFORE OPERATION)
CHENGDU HUAYUAN ELECTRIC EQUIPMENT CO., LTD.

LGK-40/63IGBT OPERATOR’S MANUAL
1
Safety Depends on You
HUAYUAN arc welding and cutting equipments are designed and built with ample safety consideration. However,
proper installing and operating can ensure your safety.
DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT CASUALLY WITHOUT READING THIS MANUAL
THROUGHOUT.
Special Notes (Very Important):
1. Pay attention to avoiding the machine falling down when it is placed on the gradient ground.
2. It is forbidden to unfreeze the pipeline by the cutter.
3. The shield rank of this series of cutter is IP21S, so working in rain is not suitable.
4．The cutter has external static characteristic with rated duty cycle 60%, which means the machine can work 6
minutes and rest 4 minutes at the rated cutting current in 10 minutes. The machine has the function of thermal
protection.When the internal temperature exceeds a set temperature, thermal protection moves on and the
abnormity indicator lamp on the panel turns ON, then there is no output in cutter. The machine can become normal
and work only after the internal temperature drops down and the abnormity indicator lamp on the panel turns OFF.
Purchase Date：___________________________
Serial Number: ____________________________
Machine Model：__________________________
Purchase Place：___________________________

LGK-40/63IGBT OPERATOR’S MANUAL
2
Cautions
Arc and arc rays can hurt.
All performing welding workers ought to have health qualification from the authority
organization to prevent you and others from arc radiation and burn. It should be
prevented for children to enter into dangerous area as well.
Be careful reading the following important items and the welder safety byelaw from the
authority organization. Be sure that qualified professionals perform all installation,
maintenances and repair procedures.
1.Electric shock：The welding circuits are not insulated when welding. If you touch the
two output electrodes of the machine with your bare skin at the same time, it will
lead to electric shock, sometimes even fatal dangers. Users need to follow the items
below to avoid electric shocks:
If possible, lay some insulating materials, which are dry and large enough, in your working field.
Otherwise, use the automatic or semiautomatic welding machine, DC welding machine as possible
as you can.
Components in the automatic and semiautomatic welding machine such as the welding wire
reel, feed wheel, contact tip and welding head are all electric components. .
Always be sure the machine has been connected perfectly to the work piece with the work
cables and should be as close as possible to the working area.
The work piece should be grounded perfectly.
Make sure that the insulating material of the electrode holder, the grounding clamp, the
welding cable and the welding head are not affected by damp, mildewed or spoilt, and be replaced
momentarily.
Never dip the electrode in water for cooling.
Never touch electric components of two welding machines at the same time, because this
voltage is supposed to be two times of welding voltage while the grounding mode is not clear.
While working high above the ground or other places having the risk of falling, please be sure
to wear safety belt to avoid losing balance caused by electric shock.
2 Arc：Use an arc welding mask to protect your eyes and skin from sparks and the
rays of the arc, pay special attention to the filter glass, which must be conformable to
the national standard.
Use clothing made from durable flame-resistant material or sailcloth to protect your skin from
hurting by the arc rays.
Remind other nearby personnel before working lest arc rays hurt them by accident.
3 Fumes and Gases ：Welding may produce fumes and gases hazardous to health.
Avoid breathing these fumes and gases. While working in limited room, use enough
ventilation and/or exhaust to keep fumes and gases away from the breathing zone, or
use the respirator. Do not weld at the same time when using of degreasing, cleaning or spraying
operations. The heat and rays of the arc can react with these gases to form phosgene, a highly toxic
gas,
Some protective gases used in welding might displace the oxygen in the air, and can lead to

LGK-40/63IGBT OPERATOR’S MANUAL
3
hurt or even death.
Read and understand the manufacturer’s instructions for this equipment, and validate the
health certification of consumptive materials, make sure they are innocuous.
4 Spatter：Spatter can cause fire or explosion.
Remove fire hazards from the welding area. Remember that spatter from
welding can easily go through small cracks and touch fire hazards. Protect all kinds of lines going
though welding area, including hydraulic lines in the wild.
Where compressed gases are to be used in the field, special precautions should be used to
prevent explosion.
When welding stops, make certain that no live part is touching the work piece or the work
stage. Accidental contact can create a fire hazard.
Do not weld containers or lines, which are not proved to be innocuous.
It is very dangerous to heat, cut or weld tanks or containers at entry holes. Does not start work
until the proper steps have been taken to insure that there is no flammable or toxic gas.
Spatter might cause burn. Wear leather gloves, heavy shirt, cuffless trousers, high shoes and a
cap over your hair to prevent from burning by spatter. Wear the ear shield when performing
sideways or face up welding. Always wear safety glasses with side shields when being in a welding
area.
The welding cables should be as close to the welding area as possible, and the short, the better.
Avoid welding cables going through the building framework, lifting chains, AC or DC cables of other
welding machines and appliances. The welding current is strong enough to damage them while
having short circuit with them.
5 Cylinder：Damage of it might cause explosion.
Make sure that the gas in the storage cylinder is qualified for welding, and the
decompression flow-meter, the adapter and the pipe are all in good condition.
Make sure that the installation of cylinder is by the wall and bundled tightly by a chain.
Be sure to put the cylinder in the working space with no crash or shake, and far from welding
area.
It is forbidden to touch cylinder with the welding clamp or the work cables.
Avoid facing the cylinder while installing the decompression flow-meter or the gasometer.
When not working, please tighten the valve.
6 Power：(For electrically powered welding and cutting equipment) Turn off input
power before installation, maintenances and repair, so that avoid accident.
HUAYUAN welding equipment is Ι class safeguard equipment; please install the equipment in
accordance with the manufacturer’s recommendations by specific persons.
Ground the equipment perfectly in accordance with the manufacturer’s recommendations.

LGK-40/63IGBT OPERATOR’S MANUAL
4
7 Power：(For engine driven welding and cutting equipment)
Work in ventilated place or outdoors.
Do not add fuel near to fire or during engine starting or welding. When not working, add fuel after
engine is cooling down; otherwise, the evaporation of hot fuel would result in dangers. Do not splash
fuel out of the fuel tank, and do not start the engine until complete evaporation of the outside fuel.
Make sure that all the safeguard equipments, machine cover and devices are all in a good
condition. Be sure that arms, clothes and all the tools do not touch all the moving and rotating
components including V belt, gear and fan etc.
Sometimes having to dismantle some parts of the device during maintenance, but must keep
safety awareness strongly every time.
When engine is hot, it is forbidden to open the airtight cover of the radiator water tank to avoid
hurt by the hot vapor.
8 Electromagnetic ：Welding current going though any area can generate
electromagnetic, as well as the welding equipment itself.
Electromagnetic would affect cardiac pacemaker, the cardiac pacemaker users should consult
one’s doctor first.
The effect of electromagnetic to one’s health is not confirmed, so it might have some negative
effect to one’s health.
Welders may use following method to reduce the hazardous of electromagnetic:
a. Bundle the cable connected to the work piece and the welding cable together.
b. Do not enwind partially or entirely your body with the cable.
c. Do not place yourself between the welding cable and the ground (work piece) cable, if the welding
cable is by your left side, then the ground cable should be by your left side too.
d. The Welding cable and the ground cable are as short as possible.
e. Do not work near to the welding power source.
9 Lift Equipment：carton or wooden boxes package the welding machines supplied by
HUAYUAN. There is no lifting equipment in its wrapper. Users can move it to the
prospective area by a fork-lift truck, and then open the box.
If having rings, the machine can be transited using rings. While HUAYUAN Welding Machine
Manufacture reminds users, there is possible risk to damage the welding machine. It is better to
push the welding machine moving in use of its rollers unless special situations.
Be sure that the appurtenances are all removed off when lifting.
When lifting, make sure that there is no person below the welding machine, and remind people
passing by at any moment.
Do not move the hoist too fast.
10 Noise： HUAYUAN Welding Machine Manufacture reminds users: Noise beyond the limit
(over 80 db) can cause injury to vision, heart and audition depending on oneself. Please
consult local medical institution. Use the equipment with doctor’s permission would help