OWNER’S MANUAL
-12-
PNR-YF-05Y-A1
WARNING
Blind experiment and careless repair may lead to more problems and make formal check and repair
more difficult. When the machine is electrified, the bared parts are with life-threatening voltage. Any
direct and indirect touch will cause electric shock, and severe electric shock will lead to death.
Warning
Connecting the welder directly with the electric generator will damage the maintenance due to the
over-voltage pulse. Only the asynchronous electric generator with stable frequency and voltage is allowed to
connect with the welding machine. Any damage that is caused by directly connecting with the electric
generator is out of the free maintenance guarantee.
NOTICE: In the period of guarantee maintenance, if user makes wrong check and repair for
malfunction of welding/cutting machines without our permission, the free maintenance guarantee
offered will be invalid
QUESTIONS TO BE RUN INTO DURING WELDING
Any of the following conditions may be related to the parts, gas, environment factor, supply powers. Please try
to improve the environment to avoid them.
A. Black welding spot
This condition indicates poorly protected welding spot from oxidizing. User may check as following:
1. Make sure the valve of argon cylinder is turned on and its pressure is enough. Argon cylinder must be
filled up to enough pressure again if pressure of cylinder is below 0.5Mpa.
2. Check if the flow meter is turned on and has enough flow. User can choose different flow according to
welding current in order to save gas .But too small flow may cause black welding spot because preventive
gas is too short to cover welding spot .We suggest that flow of argon must be kept min 3L/min.
3. Check if torch is in block.
4. If gas passage is not airtight or gas is not pure will lower welding quality.
5. Strong air flow is in the welding environment will also lower welding quality.
B. Arc-striking is difficult and easy to pause
1. Make sure quality of tungsten electrode is high.
2. Grind end of the tungsten electrode to taper .If tungsten electrode is not grinded ,that will be
difficult to strike arc and cause unstable arc .
