Buchi Rotavapo R-215 Uživatelský manuál stáhnout pdf (Strana 52)

8 Troubleshooting

52 R-210/215 Operation Manual, Version F

Table 8-1: General malfunction and their remedy

Sealing system has been installed

incorrectly

Check sealing system

Seal is defective Replace seal

Table 8-2: Malfunctions with vacuum controller and vacuum pump and their remedy

Malfunction Possible cause Corrective measure

Frequent switching of valve or pump System is leaky Check all sealing points (tubes and

their connections)

Choosen hysteresis is too small Choose larger hysteresis (if end-

vacuum is higher than 700 mbar,

switch to automatic hysteresis)

Valve does not switch Valve does not shut off Valve is dirty or the valve cable is not

connected

Vacuum is not reached Back evaporation at Rotavapor Empty receiving ﬂask

Water pressure of water jet pump is

too low

Open water tap completely

Distillation “died out” Manually decrease the pressure until

the distillation starts again

Distillation stopped, although not

dried out completely

Back evaporation from the receiving

ﬂask is too strong (especially for

solvent mixtures)

Empty receiving ﬂask and restart

distillation

Malfunction in distillation procedure

which is not exactly deﬁned (e.g.

sudden cooling, heat ﬂow too low,

etc.)

Decrease the pressure manually until

the distillation starts again

Table 8-3: Error messages heating bath

Error number Displayed at Possible cause Remedy

E01 Heating bath display Bath temperature sensor is defective Contact the BUCHI customer

service

E02 Heating bath display Excess temperature, bath is not full

enough or empty

Switch off the instrument and let it

cool down. Fill the heating bath and

switch on the instrument again.

E03 Error is read out via the

RS-485 interface and

can be read out at the

vacuum controller

The EEPROM of the bath contains

inconsistent data or is defective

Contact the BUCHI customer

service

E04 Heating bath display The bath is empty or has been ﬁlled

with hot liquid

Switch off the instrument and let

it cool down. Fill the bath with

heating medium and switch the

instrument on again.

E70 Heating bath display Program error due to a software or

an electronical error

Switch the instrument off and on

again. When the error still occurs,

contact the BUCHI customer

service.

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