Version 1.0 30
IX. Fault Diagnosis
Ultimate vacuum can’t
reach 50 Pa
Check that the vacuum pump is correctly connected to the
main unit with the clamp (tightly).
Check that the drain valve is closed.
Check that the sealing ring is installed correctly.
Check that the vacuum pump functions correctly and the
vacuum pump oil is clear.
If the error remains, contact the service department.
Replacement parts may be required.
Check that the drain valve is closed, and the chamber is
vacuum sealed.
Check the vacuum oil level from the viewing window and
confirm it is not excessive.
Check whether the vacuum oil has begun to solidify. If this
does occur, change the oil.
Make sure that the temperature inside the chamber is not
excessive (>80°C). Wait until the temperature inside the
chamber is below 40°C before starting the pump.
The Freeze Dryer
chamber isn’t cold
Check the chamber temperature on the HMI screen to
make sure that cooling is working.
Check that “Defrost” is not running.
Make sure the compressor is running.
If compressor is “ON” but the temperature inside the
chamber is still high, check the air-cooled condenser and to
make sure it is not clogged.
Ensure that there is enough clearance around the vents
and that ambient temperature of the room is below 30°C
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