173. Slide out both filters (1) and recoverycore (2) from the unit.4. Clean the inside walls of the unitwith a clean damp cloth, then wipewith a clean dry one.5. Remove dust on filters and on coreusing a vacuum cleaner and a softbrush attachment.6. Wash both core filters underlukewarm water with mild soap.Rinse thoroughly and let drycompletely before reinstalling onthe core.7. Slide the core and the cleaned filters into the unit.8. Reinstall the door. Secure it with both mechanical screws no. 8-32 x 1” previouslyremoved and plug the unit.NOTE: The unit will return to its previous setting after a 30-second delay for bootsequence.3. Maintenance (cont’d)3.1 Quarterly Maintenance (cont’d)VD024312CAUTIONFollow the instructions on the corelabel to reinstall it correctly.3.2 Annual MaintenanceDo the same operations as the Quarterly Maintenance (Section 3.1), and clean therecovery core as follows (refer to the core label):HRV units: Soak the heat recovery core in a mixture of lukewarm water and mild soap.Rinse thoroughly. Shake the core to remove excess water and let it dry.ERV units: Remove the dust on the core using a vacuum cleaner and a soft brushattachment.After reinstalling the core, the filters and the unit’s door, then clean the exterior hoods.