Page 114 VK 7025 Dissolution Apparatus Revision H, 11/10
Maintenance and Troubleshooting Operator’s Manual P/N 70-9033
Varian, Inc.
Troubleshooting
The Dissolution Systems Service Department can assist you if you experience problems
or have questions concerning your dissolution apparatus. Many problems can be traced
to simple sources and are easily solved.
Following is a troubleshooting guide which may help you:
Following is a list of error messages that may display on your screen and the suggested
solution:
Problem Suggested Solution
The display screen freezes. Press STOP / PAUSE and ENTER at the same time to
restart the system.
All administrative passwords are
forgotten or deleted.
Contact the Dissolution Systems Service Department.
Error Message Suggested Solution
Spindle board error:
RPM NOT AT SETPOINT
Ensure nothing is blocking the paddle or basket
preventing it from rotating.
Temperature board error:
HEATER SENSOR EXCEEDS BATH
SENSOR BY 5 DEGREES
Check bath water level. Ensure the heater /
circulator is primed and water is flowing.
Temperature board error:
HEATER TEMP RISE EXCEEDS
0.284
DEGREES PER SEC
Check bath water level. Ensure the heater /
circulator is primed and water is flowing.
Temperature board error:
HEATER SENSOR OPEN
Ensure the cable from the heater / circulator to the
back of the VK 7025 is connected.
Temperature board error:
BATH SENSOR OPEN
Ensure the bath temperature probe is plugged into
the back of the VK 7025.
Temperature board error:
HEATER SENSOR OVER 70
Check the bath water level. Ensure the heater /
circulator is primed and water is flowing.
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