Huaao NBC Operation Manual

INVERTER GAS SHIELDED WELDING MACHINE

OPERATION MANUAL

NBC DIGITAL SERIES

important: read this manual completely before using this series machines. Save this manual and
keep it handy for quick reference. Pay particular attention to the safety instructions we have
provided for your protection. Contact your distributor if you do not fully understand this manual.

JINAN HUAAO ELECTRIC WELDING MACHINE CO., LTD.

www.jnhuaao.cn

[e-mail]

Tel.: [phone] / Fax: [phone]

User Instruction

(1) When purchasing the products of our company, the user is required to fill the Warranty

carefully with official stamps. It will be grateful if the customer will send the first page and a
copy of invoice to the after-sales service department of the Company, or entrust the sales units
to send them instead. And the second page will be left for registration procedure by the local
dealers (maintain stations). If there area no local dealers (maintain stations) existing in some
areas, please send the first and second pages together to the after-sales service department of
the Company. Otherwise on maintain activities will be provided except maintain services.

(2) Provided some quality problems appear on the products of the Company in one year after

purchasing (except for Non-warranty parts), please contact the local dealers (maintain stations)
with the Warranty (Retention of users) or a copy of invoice as a certificate so as to get
specified maintain service. If the user can not provide the Warranty or a copy of invoice, the
Company will calculate the warranty period according to the Date of Manufacture, which
shall be one year.

(3) If a product is beyond the warranty period, the local dealers (maintain stations) can also

provide maintain services, but extra fees shall be charged according to the specifications of
the Company.

(4) If any damage caused by unauthorized fabrication, transit, incorrect Custody or caused by

operation not according to the Instruction, if unauthorized alteration of “warranty cards” and

no purchasing certificate provided, the Company will reserve the rights not to provide
maintain services for free. But maintain services can be provided by charging certain maintain
expenses.

The company reserves the modification and power of interpretation for the instruction.

Safety precautions

● Please read this instruction carefully for correct use.

● The objective of the precautions listed in this instruction is to ensure the safe use of machine

and prevent you and others from being harmed or injured.

● Safety consideration for the welding machine in design and manufacture. Work to the
precautions in this instruction, otherwise it will cause major accident.

● If used incorrectly, the harm and damage will occur in three different ways. So the caution
symbol and warning labels are listed in this instruction.

Caution symbols

Warning labels

Content

High danger

If used incorrectly, potential major harm will result in death
or serious injury and major danger accident once it occurs.

Danger

If used incorrectly, potential scourge harm will result in
death or serious injury and danger accident once it occurs.

Caution

If the welding machine is used incorrectly, the harm with
mild degree, slight wound and other dangerous accidents
and the damage of articles will be caused.

*The symbol above is applicable to the general occasion.

The serious injury mentioned above refers to eyesight damage, trauma, harm, electric shock,
fracture and poisoning and so on which will leave sequela and is in need of making treatment in
need of making treatment in hospital of going to hospital for long period, slight wound refers to
burn and electric shock and so on which is not in need of being in hospital but treatment for long
period. The damage of articles refers to the loss of property and damage of machine.

On the usage of machine, the symbols shown as following indicate [ must do] and [forbid
doing.

Compulsion

Must do
For example [ grounding]

Forbididden

Forbid doing

*The symbols above are used in the general occasions

Danger Work to the following items in case of the major personal accident

1. Safety consideration for the welding machine in design and manufacture.

Work to the precautions in this instruction, otherwise it will cause death, serious
injury and other major personal accident.

2. For the construction power source of input, the choice of equipment location, the

application keeping and configure of high pressure gas, the keeping of workpiece

after welding and the treatment of rejection and so on, please observe the relative
regulations and the standards inside your company.

3. The unconcerned personnel never go in the welding working location.

4. The person using heart pacemaker do not be close to the welding machine in

operation and the surrounding of welding operation location without permission of
doctor. The produced magnetic field when the welding machine is electrified will
produce the bad effect on the action of pacemaker.

5. Invite the professional or expert person to install, examine and repair and maintain

the welding machine.

6. To ensure safety, please correctly understand the content in this instruction and

invite the personnel with safety usage knowledge and skill to operate this
machine.

7. Do not use machine in the work except the welding.

Danger Work to the following items in case of electric shock

*Once contact the position with electricity, the fatal electric shock or

heat injury will be caused.

1. Never contact electrified position.

2. Invite electric personnel to earth welding machine and parent metal according to

regulations.

3. In installation and examination and repair, must turn off the power of electric

switch box first, then the operation was made after 5 minutes.

4. Never use the cable which lacks of capacity of where conductor exposes for the

damage of insulation jacket.

5. For cable connection part, please ensure insulation.

6. Never use welding machine on the condition of dismounting machine shell.

7. Please use dry insulation glove.

8. Please use safety net at high place operation.

9. Make maintenance and examination and repair, only the damaged part can by use

until it is repaired well.

10. Please shut off all input powers when the machine is unused.

11. When use AC arc welding machine in the confined place or high place, please use

electric shock-proof device.

1. When make welding or supervise welding, please use the safety appliance with

enough shading degree.

2. Please emphasize particularly on wearing protective glasses.

3. Please wear protective glove, long sleeve clothes, welding spats, apron and other

safety appliances in welding, which are made of leather.

4. Protective barrier are set around the welding location to prevent arc light from end

angering others.

5. When noise is great, please use sound insulation apparatus.

1. To prevent gas poisoning and suffocation and other accidents, please use regulated

exhaustion facilities, and breath protection appliance is coordinated for use.

2. In operation in the confined location, please accept the examination by

supervision personnel and fully change gas and coordinate in using breath
protection appliance.

3. Never make weld within degrease, cleaning and atomization working area.

4. When weld the steel plate with electroplate or coating, the harmful dust and gas

will produce, please use protection appliance for breath.

*Arc light will cause the inflammation of eye or heat injury of skin
and other personal damages.
*Splashing and weld slag will burn eye or skin
*Noise will be harmful to hearing

Caution To avoid weald dust and gas endanger you and others,
please use safety appliance

*Weld dust and gas endanger health
*In operation in the confined location, lack of oxygen will result in suffocation.

Caution To prevent fire, explosion, cracking and other accidents from
taking place, please be sure to observe the following regulations.

*Splashing or heat parent metal just welded will cause fire.
*When current loop produce non full contact on the bad connection of cable and
steel bar and other parent metals, the heat after electrifying will be caused.
*Never weld on the container filling combustibility substance, otherwise explosion
will be caused.
*Never weld seal container, for example groove( box) , pipe, otherwise cracking
will be caused.

1. Never place combustible in the weld location.

2. Never weld near combustible gas.

3. Never close to the combustible when the heat parent metal is just welded.

4. When weld dooryard, ground and wall, please eliminate the combustible on the back.

5. The connection of cable shall surely be insulation.

6. The connection of cable of parent metal side shall approach welding position as possible.

7. Never weld the gas pipe and seal groove and so on which stores gas.

8. The fire extinguisher shall be placed near weld work location to protect against accident.

1. Please use gas bottle correctly according to regulations.

2. Please use he gas adjustor equipped or recommended by our company.

3. Please read the operation instruction for gas adjustor before use, observe precautions.

4. Please use the special gas bottle support structure to fix gas bottle.

5. Never put gas bottle in the place where temperature is high or sunlight shines directly.

6. Make sure you face keep away from the outlet of gas when the valve of gas bottle is opened.

7. Please install the gas bottle protecting jacket when the gas bottle is unused.

8. Never put welding torch on the gas bottle, electrode can not contact gas bottle.

1. Never use welding machine on the condition of dismounting machine shell.

2. Invite the professional or expert person to install, examine and repair and maintain the

welding machine.

3. Never finger, hair, clothes, etc approach cooling fan and the electrode wheel of electrode

feeding machine and other rotation positions.

1. In affirming whether the welding wire is fed, do not peek into the small hole of current

Caution To prevent gas bottle from dumping, gas adjustor from
cracking and other accidents, please be sure to observe the following
regulations.

*The dumping of gas bottle will result in personal accident.
*If gas bottle stores high pressure gas, incorrect use will cause the
ejection, thus causing personal accident.

Caution Contact of rotation position will cause injury, please
observe the following regulations

*Never ringer, hair, clothes, etc approach cooling fan and the electrode
wheel of electrode feeding machine and other rotation positions.

Caution The end of welding wire will cause injury, please be
sure to observe the following regulations
*If the welding wire emits from welding torch, the eye, face and
other exposure parts of the body will be stabbed.