HUAYUAN ELETRIC ZX7-250, ZX7-400MA, ZX7-315 Operator's Manual

ZX7-MA operator’s manual

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ZX7-250、315、400MA SERIES

MA INVERTER DC ARC WELDING MACHINE

OPERATOR’S MANUAL

(PLEASE READ CAREFELLY BEFORE OPERATION).

CHENGDU HUAYUAN ELETRIC EQUIPMENT CO., LTD.

ZX7-MA operator’s manual

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Safety Depends on You

Huayuan arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be

increased by proper installation ... and thoughtful operation on your part.

DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND

THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT.

Attention

● ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE

SERIOUS INJURY OR DEATH.

● BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR

PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

●ARC RAYS can burn.

a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or

observing open arc welding..

b. Use suitable clothing made from durable flame-resistant material to protect your skin and that of your helpers from the arc

rays.

c. Protect other nearby personnel with suitable, non-flammable screening and/or warn them not to watch the arc nor expose

themselves to the arc rays or to hot spatter or metal.

●ELECTRIC SHOCK can kill.

a. The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch these “hot” parts

with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands.

b. Insulate yourself from work and ground using dry insulation. Make certain the insulation is large enough to cover your full

area of physical contact with work and ground.

c. Always be sure the work cable makes a good electrical connection with the metal being welded. The connection should be

as close as possible to the area being welded.

d. Ground the work or metal to be welded to a good electrical (earth) ground.

e. Maintain the electrode holder, work clamp, welding cable and welding machine in good, safe operating condition. Replace

damaged insulation.

f. Never dip the electrode in water for cooling.

●FUMES AND GASES can be dangerous.

a. Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases. When welding, keep

your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep fumes and gases away from the breathing

zone.

b. Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing, cleaning or spraying operations.

The heat and rays of the arc can react with solvent vapors to form phosgene, a highly toxic gas, and other irritating products.

c. Read and understand the manufacturer’s instructions for this equipment and the consumables to be used.

●FOR ELECTRICALLY powered equipment.

a. Turn off input power using the disconnect switch at the fuse box before working on the equipment.

b. Install equipment in accordance with the National Electrical Code, all local codes and the manufacturer’s

recommendations.

c. Ground the equipment in accordance with the National Electrical Code and the manufacturer’s recommendations.

●WELDING SPARKS can cause fire or explosion.

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a. Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding sparks from starting a

fire. Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to

adjacent areas. Avoid welding near hydraulic lines. Have a fire extinguisher readily available.

b. Where compressed gases are to be used at the job site, special precautions should be used to prevent hazardous situations.

c. When not welding, make certain no part of the electrode circuit is touching the work or ground. Accidental contact can

cause overheating and create a fire hazard.

d. Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to insure that such procedures

will not cause flammable or toxic vapors from substances inside. They can cause an explosion even though they have been

“cleaned”.

e. Vent hollow castings or containers before heating, cutting or welding. They may explode.

f. Sparks and spatter are thrown from the welding arc. Wear oil free protective garments such as leather gloves, heavy shirt,

cuffless trousers, high shoes and a cap over your hair. Wear ear plugs when welding out of position or in confined places.

Always wear safety glasses with side shields when in a welding area.

g. Connect the work cable to the work as close to the welding area as practical. Work cables connected to the building

framework or other locations away from the welding area increase the possibility of the welding current passing through

lifting chains, crane cables or other alternate circuits. This can create fire hazards or overheat lifting chains or cables until

they fail.

ZX7-MA operator’s manual

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CONTENTS

1. Summery -------------------------------------------------------5

2. Work conditions & environments--------------------------5

3. Product Specifications ---------------------------------------6

4. Constructions and Functions Description----------------6

-Installations------------------------------------------------------8

5. Operations------------------------------------------------------9

6. Maintenance---------------------------------------------------9

7. Troubleshooting & repair-----------------------------------10

8. List of packing-------------------------------------------------10

9. Diagram of the main electric principle -------------------11