Freeze dryer needs to lift the plexiglass cover

Shanghai Xinzhuang Instrument Co., Ltd. has an industry-recognized team of experts and first-class technology talents. With a deep understanding and mastery of scientific instrument technology, we operate a variety of freeze dryers and provide you with perfect pre-sales and sales. And after-sales service, professional technical advice and other services, Shanghai Xinzhuang look forward to your consultation and purchase!

Shanghai Xinzhuang teaches you how to operate the freeze dryer properly, as detailed below:

Boot operation:

1. Turn on the power cord and check to see if the main power indicator is blinking. The flashing indicates that the power is on.

2. Press the “Total Power” key for three seconds. At this time, the “Cold Trap Temperature” display window starts to display the cold trap temperature and release this button.

3. Press the "refrigerator" switch key, the chiller starts to run, and the chiller temperature gradually decreases. In order for the cold trap to have sufficient ability to adsorb moisture, the pre-cooling time should be no less than 30 minutes.

4. Press the “Vacuum Meter” to open the key. At this time, the vacuum digital display is “110” and the “103” indicator lights.

5. After the pre-cooling is finished, place the prepared items to be dried in a drying tray, cover the plexiglass cylinder, and tighten the inflation valve and the drain valve (on the right side panel) clockwise.

6. Press the “vacuum pump” to open the key, the vacuum pump starts working, the digital display drops below 20Pa, and the freeze-drying process begins. Note: When the vacuum pump starts working, press down on the plexiglass cover for a while, which is good for sealing.

7. Multi-manifold type should first close the rubber valve (put the valve core up), and when the vacuum reaches 20Pa or less, insert the freeze-dried bottle that has been pre-frozen into the lower interface of the rubber valve and rotate the plastic valve core down 180 degree. Note: At this time, the vacuum gauge will rebound, and the next bottle should be installed when the vacuum reaches 20Pa.

Shutdown operation:

1. First slowly (must be slow, otherwise the oil in the vacuum pump will suck up) Open the "inflation valve" and press the "vacuum pump" power switch to make the air slowly enter the cold trap. To fill the inert gas, connect the decompression conduit of the inert gas to the “inflation port” and slowly open the “inflation valve” to allow the inert gas to slowly enter the trap.

2. Press the “vacuum meter” and “refrigerator” switch in turn to turn off. At this time, the indicator light is off, “total power” is turned on, and the button is released after pressing for three seconds without turning on.

3. Lift the plexiglass cover, remove the item, store it, and freeze the drying process.

4. After the ice in the cold trap has turned into water, open the “drain valve” to drain the water.

5. Clean up the moisture and impurities in the cold trap and properly maintain the equipment.

6. When the vacuum pump is not in use, it should be covered with a spout to prevent dirt from entering.

7. Multi-manifold type, the rubber valve should be closed one by one and the freeze-drying bottle should be removed before repeating the shutdown operation.

Precautions: Do not switch frequently during operation. If the chiller stops running due to operational errors, it cannot be started immediately. Wait at least 20 minutes before starting again to avoid damage to the chiller. After each freeze-drying, the ice on the cold trap coil is turned into water, and then the towel is cleaned and lyophilized. When the "inflation valve" is unscrewed to the cold trap, it must be slow to avoid damaging the vacuum gauge.

Instrument maintenance 1. Keep the surface of the compressor fins clean and clean with dry cloth and dry brush. 2. The rubber ring should not be oiled under normal circumstances, but it should be kept free of particulate impurities. 3, keep the ambient temperature moderate, too high or too low will lead to oil leakage. 4. During the use of the vacuum pump oil, the eye side changes from light color to yellow, brown, brown or even black. To replace the new oil in brown, the oil scale should be ≤ 1/2, and the suspension should be changed when the oil window is found. oil. If the oil separator separator above the pump exceeds 1/2, it needs to be drained.

Shanghai Xinzhuang Instrument is committed to building a world-class laboratory instrument brand, with a wide range of products and top quality, welcome to buy!

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