Trainee Guide TR-L2-M2000
Level 2 Maintenance Training – M2000 Dispensing Systems 4-2-28 P/N 73-0018-00 (Revision B)
Information Sheet 4-8-5
DV-6000 Troubleshooting (Continued)
D. Material Drips For A Short Time And Eventually Stops
Possible Cause Recovery
1. Air in Fluid 1. Purge thoroughly or use degassed material.
2. Valve set too high 2. Lower valve pressure.
3. Syringe plunger is incorrect
type
3. Change plunger to orange no-draft stopper or yellow
stopper.
4. Fluid is slightly compressible 4. Add a short valve pullback (0.05 to 0.1 seconds).
E. Fluid Leaking From Overflow Port On Side Of Valve Body
Possible Cause Recovery
1. Cup seal is worn out 1. Replace cup seal.
2. Valve pressure set too high 2. Lower valve pressure.
3. Feedscrew has worn at the
shoulder
3. Replace seal or send valve back for refurbishment.
F. Dispensed Fluid Is Discolored
Possible Cause Recovery
1. Abrasive fluid is wearing seal 1. Change to UHMW seal.
2. Abrasive fluid is wearing the
feedscrew
2. None.
G. Valve And/Or Needle Clogging With Solder Paste
Possible Cause Recovery
1. Solder paste is not a
dispensable grade
1. Select a dispensable grade.
2. Needle size is too small 2. Use a larger needle.
3. Valve not primed with
conditioning fluid prior to
dispensing
3. Prime valve.
4. Solder paste packaged in 30
cc syringes
4. Use 10 cc or smaller syringes to reduce agitation time.
5. Dispensing tip not tightened
properly.
5. Use torque wrench to tighten tip.
6. Tip too close to substrate or
touching substrate
6. Raise dispensing height.
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