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Desiccator (LAMDA-P)

Desiccator (LAMDA-P). What is the desiccator?. Desiccator When making the solutions such as PDMS mixture, the vapor is created. If the vapor remains in the solutions, sample quality will be very low. Therefore, the vapor should be removed from solutions.

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Desiccator (LAMDA-P)

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  1. Desiccator (LAMDA-P)

  2. What is the desiccator? • Desiccator • When making the solutions such as PDMS mixture, the vapor is created. • If the vapor remains in the solutions, sample quality will be very low. • Therefore, the vapor should be removed from solutions. • A instrument eliminating the vapor is called a desiccator. • Vacuum pump • A instrument to make vacuum state inside of desiccator

  3. Specifications (IN-VS)

  4. Specifications (W2V10)

  5. Components and installation • Desiccator: intake and exhaust valve, pressure gauge, lockers and Container • Vacuum pump: oil mist trap, oil inlet, gas ballast, clamp and vacuum hose • Firstly, oil mist trap and vacuum hose are connected and fixed by clamps. • Vacuum hose should be also connected to intake valve of desiccator. • Before operating vacuum pump, make sure that intake valve is opened, exhaust valve is closed and desiccator is entirely locked. • Test operation of vacuum pump is necessary to confirm leakage.

  6. Instruction (how to remove the vapor) Insert the plate including PDMS mixturein the desiccator, after unlocking the cover. At this moment, the amount of mixture in the plate should be well controlled due to overflow while removing the vapor. After locking the desiccator, make sure that intake valve is opened and exhaust valve is closed before operating the vacuum pump. Operate the vacuum pump until the vapor is entirely removed. Open the exhaust valve carefully and gradually to remove the vacuum. If exhaust valve is quickly opened, the mixture plate can be overturned due to abrupt pressure difference.

  7. Inspection of vacuum pump • Random inspections • Check oil level frequently, whether the oil is brownish, dirty, or contains moisture. (Change the oil if it found so ) • To change oil, let the pump cool for about 5 minutes. • Drain the contaminated oil completely through the drain plug. (backside of pump) Close the drain plug now. Fill the new oil (MR-200) through the oil infusion hole. Check oil level while filling, not to overfill. • When the pump becomes noisy or starts to vibrate, turn off the power and check the oil level, oil leakage, etc. If the problem still persists, call for service. • The pump oil temperature should be typically less than 65℃. One quick easy check of the oil temperature might be to touch by hand and feel the oil case. If bearable, the temperature is assumed to be in safe region.

  8. Inspection of vacuum pump cont. • Periodic inspections • The hours shown under are only approximate numbers. Should plan ahead to minimize down times. • Overhaul pump once a year to improve its performance and expectation of life. If not overhaul the pump, accumulate dusts, contaminants, and oil sludges.

  9. Troubleshooting

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