Most economic freeze dryers with high ice capacity, suitable for drying of sample containing water.
What we should pay attention when using a compressor is to avoid frequent start-up. Oherwise, the compressor could be burnt out, or its service time could be shortened. Our compressor has start-up delay function which could protect compressor. When the unit needs to be restarted after frequent power interruption, the fan of the radiator starts to work to remove heat, then the compressor powers on.
• Protective interlock system-vacuum pump oil non-return valve mounted in the gas inlet can make gas enter into vacuum pump just as the direction shown in the picture. In case of sudden power failure, vacuum oil could not counter-flow into the vacuum tubing system, which can protect sample in the chamber from oil containment. Moisture in tubing system is also prevented from entering into the vacuum pump. Once vacuum pump quits working, the unit automatically backfills sterilized gas so as to provide the maximum protection for the pump and the sample.
• Oil mist filter – this is to filter and recycle vacuum pump oil so as to avoid containment.
• Oil water separation device – oil water separator mounted inside vacuum pump could collect and evaporate water or other solution entering into pump so as to make it exhausted from gas valve. We suggest running the pump with the gas valve open at a two months interval to let the vapour out.