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Cautions:
The screen must be cleaned by the cloth that is dry, soft and lint-free, do not use
liquid.
If there is too much dirt on the surface, you can use Ethylene glycol or isopropyl
alcohol.
7.3 Maintenance of the water filter
Water filter is placed on the rear of the ventilator, it shown as below.
Figure 7-1 Water filter position view
Cautions:
Do not block the outfall of the water filter.
Replace requiems: 1.Replace the filter core every year, and replace the filter core
when the pressure difference reaches to 0.1 MPa.
7.4 Maintenance of the expiratory valve
Figure 7-2 Expiratory valve disassembly view
1. Refer to the section 3.7 to disassemble the expiratory valve.
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