Specifications include, but are not limited to: The Contractor shall provide all labor, supplies, materials, equipment, and services necessary to perform maintenance services, respond to trouble calls and repair of the VMACS indicated in said Appendix A as well as the software, associated equipment interfaced to the systems and communication network and shall keep the System in good and safe operating condition at all times. The Contractor shall perform System performance evaluation, adjustment, calibration, and preventive maintenance procedures and schedules required by the equipment manufacturers, as well as, but not limited to the following: A.Control Processing Units (Central Database Computer, Real Time Computer, Network Communications Nodes and workstations), cameras, monitors, printers, and card readers shall have visual inspection of contents for dust, dirt or other contaminants. PC Boards with dirt, dust, etc., will be brushed or vacuumed to remove contaminants. All housings shall be cleaned and vacuumed (interior & exterior). All electrical and mechanical connections shall be visually inspected. Maintenance shall include, but not be limited to testing and/or tightening of all assembly and subassembly, mounting screws, factory interconnect and field wiring terminals. Ribbon cable edge connectors shall be cleaned to insure positive contact. B.Power Supply checks and/or adjustments shall consist of, but not be limited to, the following: Battery Trickle Rate adjust, Battery Hi Rate adjust, Supply output adjust, verify AC input voltage level, verify AC input failure/brown out/battery transfer operation, verify DC failure/battery transfer circuit, positive and negative ground detect circuit operation, and verify external failure report circuit operation. C.Backup batteries for the card reader field controllers shall be replaced at a minimum of one third (1/3) of the overall number of batteries per year. The Contractor shall maintain a written record of battery replacements. No backup battery should go more than three (3) years without being replaced. This work shall not be paid separately but be included in the bid price for monthly maintenance services.