Installation, Operation and Maintenance manual
38
WSO Flex
d. HEPA filter or 3rd stage filter element
Replace the HEPA filter at the same time as the second stage filter element
is replaced.
1. Remove the HEPA filter by unscrewing the outlet access panel at the side.
2. Install the new HEPA filter in reverse order. Make sure the HEPA filter gasket is
facing the outlet access panel.
gasket
Figure 22: HEPA or 3rd stage filter replacement