11
Manual Screw Valve DV-5005DFS /-L
Shots inconsistent in size
• Air entrapped in system (de-air material)
• Increase motor run time
• Adjust dispense gap
• Increase dwell
• Increase reservoir pressure (20 PSI MAX)
• Use braking (shorting)
• Reverse motor action
• System bind or damaged (Call service rep)
Shots too large
• Decrease motor run time
• Use smaller dispense tip
• Increase gap to avoid “squashing“ the dot
• Decrease air pressure to reservoir
Tip plugging or clogging
• Tip contacting substrate - Increase gap
• Tip bent or damaged - Replace tip
• Excessive paste for size of needle - Decrease motor run time
• Overfeeding the feed screw - Decrease air pressure on barrel
• Paste has separated - Replace with fresh barrel of paste
• Paste has exceeded shelf life - Replace with fresh barrel of paste
• Paste has poor particle size distribution - Seek an alternate supplier
• System damaged - Call service rep
Valve does not dispense
• No electricity to valve motor - Make sure all connections are secure
• Dispense tip plugged – see tip plugging
• Motor running in reverse – reverse connections
• Out of material - Replace with fresh barrel of paste
• Valve not primed properly - see „Priming Valve“
VIEWEG
