Specifications include, but are not limited to: 5.1 Preventive maintenance of all County-owned ice machines shall include the purchase of water filters and air filters by the Contractor for installation. The cost of the filters shall be included in the preventative maintenance fee for each site and as described below. Services including but not limited to: Clean and/or replace air filters, as needed (on air-cooled models.) Clean and sanitize the water system, quarterly. Clean the bin interior and unit exterior, quarterly. Schedule 24 hours in advance for Ice machines to be turned off. Mark date of filter replacement on the filter. Maintain standardized filters to the extent as possible. Check external filter system and change cartridges, bi-annual. Check inlet water valve screens, bi-annual. Conduct bearing and auger inspection on extruded ice makers, biannually. Conduct a visual inspection of components, controls, and wiring for oil spots, loose wires, loose fasteners, corrosion, etc. bi-annual. Any internal filters not identified by the County, will not be included in the preventative maintenance cost and will be charged as additional parts.