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BUCHI Rotavapo R-250 User Manual

Page 25

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25

Rotavapor R-250

5 Operation

5.5 Troubleshooting

Fault Possible

cause

Remedy

Bath is not lifted

No power supply for bath lift,

Contact service department

control

defective

Bath lift defective

Contact service department

Heating does not operate

Over-temperature protection has

Reset over-temperature protection

been

activated

PT-1000 defective (Error E0)

Check PT-1000 in the bath and contact

service

department

Heating does not operate,

1) Switching relay defective or

1) Contact service department

v/VERTEMPv

more than 15°C

switch off via unit, confirm

Heater coils defective

Contact service department

Rotation does not function

Rotary drive defective

Contact service department

Rotary drive overheated

Allow it to cool off and then start it up again

No vapor temperature

Temperature sensor not inserted

Check PT-1000 plug-and-socket connection,

correctly or defective

contact service department

Table 4: Troubleshooting

5.6 Reset of the over-temperature protection

If the heater heats up over 205°C (e.g. if no heating medium
is in the bath), it is cut off by a mechanical overtemperatu-
re protection.The overtemperature protection is reset by
pushing the button under the heating block.

Fig. 5.2: Resetting the over-temperature limiter