Does the filter material of the pre-filter of the nitrogen generator need to be replaced regularly?
| DF-H30x3C | DFB-H30x30C | RLF-160x1P |
| DF-H60x3C | DFB-H60x30C | RLF-240x1P |
| DF-H110x3C | DFB-H110x30C | RLF-330x1P |
Answer: The filter material of the pre-filter of the nitrogen generator needs to be replaced regularly, and the specific replacement cycle depends on the actual usage. Normally, it is recommended to check and replace the filter material every three months.

What is the difference between the pre-filter of the nitrogen generator and other filters
Answer: Compared with other filters, the pre-filter of nitrogen generator has the main function of removing impurities, liquid and solid particles in nitrogen.
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