62 1100 Series Nano Pump Service Manual
2 Troubleshooting and Test Functions
Stroke Length
Stroke Length: Pump channel A
B: Stroke Length: Pump channel B
The distance between the lower plunger position and the upper mechanical
stop is out of limits (nano pump).
During initialization, the nano pump monitors the drive current. If the plunger
reaches the upper mechanical stop position before expected, the motor
current increases as the nano pump attempts to drive the plunger beyond the
mechanical stop. This current increase causes the error message to be
generated.
Probable Causes
• Defective pump drive assembly.
Suggested Actions
✔ Exchange the pump drive assembly.
To Next Page
Loading...
