Buchi Rotavapor R II, Operation Manual

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8 Troubleshooting
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R II Operation Manual, Version E
8 Troubleshooting
This chapter helps to resume operation after a minor problem has occurred with the instrument. It lists
possible occurrences, their probable cause and suggests how to remedy the problem.
The troubleshooting table below lists possible malfunctions and errors of the instrument. The operator
is enabled to correct some of those problems or errors by him/herself. For this, appropriate corrective
measures are listed in the column “Corrective measure”.
The elimination of more complicated malfunctions or errors is usually performed by a BUCHI technical
engineer who has access to the official service manuals. In this case, please refer to your local BUCHI
customer service agent.
8 .1 Malfunctions and their remedy
Table 8-1: General malfunction and their remedy
Malfunction Possible cause Corrective measure
Instrument does not work Mains switch off Switch on mains switch
Instrument is not connected to power
supply Check if mains connection is okay
Fuse defective Replace the fuse. If the malfunction
occurs again, contact the BUCHI
customer service.
Bath does not heat Mains switch off Switch on mains switch
Instrument is not connected to power
supply Check mains connection
Over temperature protection was
activated Let the bath cool down and empty it.
Then push the temperature sensor
reset button at the bottom side of the
heating bath e.g. by means of a tooth
stick, see Fig. 8.1.
Fuse defective Replace the fuse. If the malfunction
occurs again, contact the BUCHI
customer service.
Servo lift does not work Various causes Contact the BUCHI customer service
Flask does not rotate Adjusting knob for rotation speed
at 0 Turn adjusting knob for rotation
speed clockwise until rotation starts
Restart instrument Turn adjusting knob for rotation
speed to 0 then slowly turn clock-
wise until rotation starts
System is leaking Joints have not been greased Grease joints
Tube connections have not been
fixed correctly or are defective Check tube connections
Tubes are leaky (brittle) Replace tubes
Sealing system has been installed
incorrectly Check sealing system