SUNWARD SWE50B, Operation & Maintenance Manual

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welding this kind of pipe or hose, clean this pipe or hose completely with incombustible solvent.
1.31 ATTENTION ON WELDING & POLISHING

The welding should be carried out on the ventilation area as for it may cause gas and fire.

Before welding, please put the flammable objects to the safety place.
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Only the licensed operators are allowed to weld. It's stictly forbidden to weld by unlicensed workers.

Put the flammable objects to a safety place before polishing which may cause sparks.

Make sure there's no spark, smoke or any other abnormal at the working area and the surrounding after
finishing welding and polishing.
1.32 REMOVING PAIN BEFORE WELDING OR HEATING
Prevent bringing potential poisonous gas and dust.
When paint heated up by welding or other methods, it will cause poisonous gas.
Remove paint as following methods before welding or heating up.

Rub out paint with abrasive paper or wheel, during this work, remember to wear regulated respirator
to prevent inhaling dust (As figure 1.31).

Rub out paint with solvent or paint remover. After rubbing out, clean paint remover with soap and
water before welding. Before welding or heating up, volatilize the paint remover gas at least 15
minutes.
The paint removing work should be operated at outdoor or well ventilation site.
1.33 NOTES FOR WELDING ON MACHINE EQUIPPED WITH
ELECTRONIC CONTROLLER AND ENGINE
The welding procedures should be strictly followed Welding Technical Universal Guidelines to avoid damage
of electronic controlling devices and bearings. Before welding, dismantle the parts which need to be weld from
the machine if possible. If it's inevitable to weld on the machine, please disassemble the electronic controlling
device from the machine before that. The following steps should be obeyed.

Shut down the engine and turn the starting switch to OFF position.

Turn the battery switch to OFF position, if there's no such switch, dismantle the negative cable of the
battery. All connection plug of the main engine and the products with controller including the electronical
controlling engine should be pulled out.

The wiretapping of the electric welding machine connect the welding parts loacally and fastenly.(Note:
Don't use the ground point of the electric parts or electrical parts as the ground point of electric welding
machine.) Make sure the sealed parts or bearing and other connection parts are not be connected by the
electricity from welding wiretapping to the welding position. Besides, it's forbidden to use the pin shaft of
work device, the ground point of electrical parts or the surrounding area of hydraulic cylinder as the
connecting zero point. Otherwise, it may damage the hydraulic parts, electrical parts and transmission