Adiabatic pre-cooling mediaCLEANINGThe digital controller provides automatic periodic cleaning of the pre-cooling media.In extraordinary circumstances, if manual rinsing is required, the recommended procedure for cleaning of the pre-cooling media is to turn the "pad maintenance switch", provided on the door of the electrical panel, to the "Hand"position for a period of 1 to 2 hours. Never use a brush or high-pressure hose for cleaning of the adiabatic pre-cooling media.REMOVAL AND REPLACEMENTThe expected service lifetime of the pre-cooling media is 5 to 7 years if basic housekeeping practices and theseoperating and maintenance guidelines are followed. If severe disposition causes reduced humidification efficiencyand reduced airflow, it is recommended that the pre-cooling media is replaced. New adiabatic pre-cooling mediaare available from your local BAC-Balticare representative.Media removal/replacement procedure:1. Verify that the pre-cooling media are DRY! Removing a wet pad will create debris falling into the unit.2. Remove top plate.3. Remove water distribution pad.4. Remove pre-cooling media.For re-installation of the media follow steps 4 to 1 in reverse sequence.Remove top plateW W W . B A L T I M O R E A I R C O I L . E U276 Maintenance procedure6 Maintenance procedure