Four-ring lyophilization experimental lyophilizer should pay attention to the points in the process of use

The four-ring lyophilization experimental lyophilizer is mainly composed of
six components: drying box, condenser (water trap), heating system, vacuum system, refrigeration system and electrical control system.

In the process of use, the four-ring lyophilized experimental lyophilizer has several important points that must be paid attention to, mainly in the following aspects: 1.
The lyophilizer vacuum box studio has no explosion-proof, anti-corrosion and other treatment, and must not be put into the easy, explosive, and corrosive gas-prone items for drying
.

If the dry article is wet, it is better to add a filter between the vacuum box and the vacuum pump to prevent the wet gas from entering the vacuum pump and causing the vacuum pump to fail
.

If the dried article is changed to light weight and small size (for small particles) after drying, the barrier net should be added to the vacuum port in the workshop to prevent the dry matter from being sucked up and then damaged by the vacuum pump (or solenoid valve).

2.
The lyophilizer vacuum pump can not work for a long time, so when the conscientious airness reaches the requirements of dry goods, the vacuum valve should be closed first, and then the vacuum pump power supply should be closed, and when the vacuum degree is less than the requirements of the dry goods, then open the vacuum valve and vacuum pump power supply, and continue to vacuum, which can extend the service life of
the vacuum pump.

3.
After repeated use of the lyophilizer, it will produce the phenomenon that it cannot be vacuumed, at this time, in addition to maintenance, the left box cover of the lyophilizer should not be removed to avoid damaging the electrical control system
.

Replace the door seal or adjust the door clasp extension interval on the box to solve
.

When the drying temperature of the careful empty box is higher than 200 ° C, a slow air leakage phenomenon will occur, at this time, the cover plate behind the box is disassembled and the heater base is loosened with an allen angled wrench, and the sealing ring is replaced or the heater base is tightened to solve
.

If the vent valve rubber plug is difficult to rotate, it can be lubricated with an appropriate amount of grease
.

4.
The lyophilizer should be kept clean frequently
.

The door glass should not be wiped with a reactive chemical solution, and should be wiped
with a soft cotton cloth.

If the lyophilizer is not used for a long time, the exposed electroplating parts will be wiped clean and coated with neutral grease to prevent corrosion, and a plastic film dust cover will be put on and placed in a dry room to avoid moisture damage to electrical components and affect the use
.