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Polymer Dryer can not reach 80 degree

New Member

Our lab purchased a new polymer dryer and when I tested it, I found out the machine can not get the set temperature. I tested with PLA and set the temperature as 80 degree celcius. The machine can only reach 70 degree and showed "heating" on the screen all the time. Any suggestions?

Topic starter Posted : 11/09/2021 8:26 pm
Member Admin

Dear @ucfmae ,

Thank you for publishing about your issue. 

I am so sorry about that situation. I have not faced this exact issue so far, so I would like to discuss it with my colleagues.

It would help me a lot if you could share with me the following information :

- Could you please estimate the time it took for the dryer to reach 70°C, and how long it was 'stuck' on 70°C when the target was 80°C ?
- How full was the hopper in terms of volume percentage ? 
- Can you please empty the hopper and run a quick test on 80°C and 100°C ? 

In the meantime, I will look for answers and do my best to find a solution asap

Please let me know if you have any additional questions


Best regards,

Posted : 14/09/2021 2:34 pm
New Member

Thank you @louis for the information. I will test the polymer dryer as you suggested and get back to you as soon as possible.

Topic starter Posted : 17/09/2021 12:17 am
New Member

Hi @louis, I tested the dryer again. This time it works fine. For an empty hopper, it takes 9 minutes to increase the temperature from 25 degree to 80 degree.  And it takes another 8 minutes to increase to 100 degree.

For a 1/4 full hopper, it takes 13 minutes to increase the temperature from 33 degree to 80 degree.

I did the tests exactly the same as last week. Somehow it works OK this week. 

Topic starter Posted : 18/09/2021 6:58 pm