Martin Christ Beta 2-8 LDplus - Manual (Page 58)

58 Error Correction Operating Manual Freeze Dryer BETA 1-8 LDplus / BETA 2-8 LDplus
6.5. Process and Equipment Information System
6.5.1. Error Messages
Vacuum of 6.11 mbar has not been reached
This error occurs in case the pressure in the ice condenser chamber
has not reached 6.11 mbar after 15 minutes of operation with open
pressure control valve. There must be a vacuum leak in the system.
The pump is switched off to avoid it pumping against the
atmospheric pressure.
The pressure control valve is closed and the vacuum pump is
switched off. Please eliminate the error and confirm the message
afterwards. Following the confirmation, the vacuum pump is
restarted.
Causes:
Micro-aeration valve or drain valve not closed.
Lid or drying chamber not mounted correctly.
Missing ground-in stopper in the lid or in the drying chamber.
Defective vacuum pump. Check whether the mains switch of the
vacuum pump is switched on.
Vacuum sensor defective
This error message is displayed in case the unit control system
reads in an invalid value supplied by the vacuum sensor.
Check the connecting cable and the connections to the vacuum
sensor, perform an atmospheric adjustment of the sensor or replace
the vacuum sensor if necessary.
Causes:
Vacuum sensor not connected.
Heating spiral of vacuum sensor broken.
Overpressure refrigerator 1
Overpressure in refrigeration unit KM1, released via the pressure
switch.
Please check the ambient temperature, ensure sufficient air
circulation of the heat exchanger of the refrigeration system and
check the load of the unit.
Overpressure refrigerator 2
Overpressure in refrigeration unit KM2, released via the pressure
switch.
Please check the ambient temperature, ensure sufficient air
circulation of the heat exchanger of the refrigeration system and
check the load of the unit.
Excess temperature “ice condenser”
This error occurs in case the temperature of the ice condenser
exceeds +65°C. All active aggregates are switched off
simultaneously, i.e. the system is automatically switched to standby
mode. The error message can occur when the temperature of the
ice condenser exceeds +65°C when defrosting the system. The
refrigerating unit is switched off in order to prevent it from being
operated or started at too high temperatures. The system cannot be
restarted until the ice condenser temperature is lower than +65°C.