CHAPTER 6: USER MAINTENANCE
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665 6-3
Troubleshooting Chart
PROBLEM CAUSE (In Order of Probability)
Electrode Sparking
Excessive current/energy set at the Power Supply
Insufficient weld head force
Slow weld head follow-up
Incompatible weld piece projection design
Misaligned parts
Contaminated weld piece surface/ plating
Wrong electrode tip shape
Wrong electrode material
Contaminated electrode surface
Electrode Sticking
Contaminated weld piece surface/ plating
Wrong electrode material/ tip shape
Insufficient weld head force
Excessive current/energy set at the Power Supply
Misaligned parts
Excessive weld time set at the Power Supply
Contaminated electrode surface
Slow weld head follow-up
EMERGENCY STOP
displayed on the LCD, and fans all stop,
but the Emergency Stop Switch is not
activated.
Blown fuse located on internal Power Distribution & Fan Controller Board.
Contact AMADA WELD TECH for support.
Insufficient Weld Nugget
Insufficient current/ energy set at the Power Supply
Wrong electrode material/ tip shape
Worn/mushroomed electrodes
Insufficient weld time set at the Power Supply
Incorrect weld head polarity
Misaligned parts
Contaminated weld piece surface/ plating
Excessive weld head force
Insufficient weld head force
Contaminated electrode surface
Incompatible weld piece projection design
Slow weld head follow-up
Incompatible weld piece materials
No cover gas on weld piece
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